JP6225134B2 - Water purification cartridge and faucet - Google Patents

Description

  The present invention relates to a water purification cartridge and a faucet.

  As a faucet, there is known a faucet with a water purifying function in which a water purifying cartridge in which activated carbon and a hollow fiber membrane bundle are separately accommodated is attached to a water discharge head in a replaceable manner. Activated carbon removes trace components such as free residual chlorine and organic substances contained in tap water. The hollow fiber membrane removes turbid components such as iron rust contained in tap water. For example, a water purification cartridge can be formed by adhering the end of a deformable cylindrical nonwoven fabric to the hollow fiber membrane case with an adhesive and containing activated carbon in the cylindrical nonwoven fabric.

  The water purification cartridge shown in Patent Document 1 includes a hollow fiber membrane cartridge filled with a plurality of hollow fiber membranes and an activated carbon cartridge filled with activated carbon. The activated carbon cartridge is provided with a mesh member that allows passage of water while preventing the passage of activated carbon on the inner periphery of a bottomed cylindrical outer case. The hollow fiber membrane cartridge and the activated carbon cartridge are joined by a joining member made of a material that has flexibility and exhibits hermeticity. The joining member has a first hook that protrudes toward the hollow fiber membrane cartridge and engages with the case of the hollow fiber membrane cartridge, and a second hook that protrudes toward the activated carbon cartridge and engages with the outer case of the activated carbon cartridge. ing. The second hook engages with the engaged convex portion of the outer case on the outer side of the outer case.

Japanese Patent Laying-Open No. 2005-21836

The water purification cartridge shown in Patent Document 1 is based on the premise that there is a bottomed cylindrical outer case outside the mesh member, and the mesh member is not directly connected to the case of the hollow fiber membrane cartridge.
When the end portion of the deformable cylindrical nonwoven fabric is bonded to the hollow fiber membrane case with an adhesive, the adhesive soaks into the end portion of the cylindrical nonwoven fabric, and the water passage area of the cylindrical nonwoven fabric is reduced accordingly.

In addition, the above problems similarly exist also in the water purification cartridge which has the accommodating member in which adsorption agents other than activated carbon are accommodated, and various water faucets.
The present invention has an object of providing a water purification cartridge and a faucet capable of increasing the water passage area of a deformable storage member in which an adsorbent is stored.

The water purification cartridge of the present invention has an outer surface through which water can flow from the outside to the inside , and a deformable storage member in which the adsorbent is stored,
In a water purification cartridge comprising a water distribution port and a flow port member having an outer fitting portion into which an end of the housing member is inserted,
An inner fitting member inserted inside the deformable housing member ,
The outer fitting portion is disposed in contact with the outer surface of the end portion of the housing member, the inner fitting member is disposed in contact with the inner surface of the end portion of the housing member, and the outer fitting portion and the inner fitting are arranged. The member is held by sandwiching the end portion of the housing member .
Further, the water purification cartridge of the present invention is a non-woven fabric, a woven fabric, a net, or a filter paper, and a deformable storage member in which an adsorbent is stored,
In a water purification cartridge comprising a water distribution port and a flow port member having an outer fitting portion into which an end of the housing member is inserted,
An inner fitting member inserted inside the deformable housing member ,
The outer fitting portion is disposed in contact with the outer surface of the end portion of the housing member, the inner fitting member is disposed in contact with the inner surface of the end portion of the housing member, and the outer fitting portion and the inner fitting are arranged. The member is held by sandwiching the end portion of the housing member .
Furthermore, the water purification cartridge of the present invention is capable of circulating water, and a deformable storage member in which the adsorbent is stored;
A water distribution port, and a flow port member having an outer fitting portion into which an end of the housing member is inserted,
In the water purification cartridge removable from the water discharge device inside the water discharge device,
An inner fitting member inserted inside the deformable housing member ,
The outer fitting portion is disposed in contact with the outer surface of the end portion of the housing member, the inner fitting member is disposed in contact with the inner surface of the end portion of the housing member, and the outer fitting portion and the inner fitting are arranged. The member is held by sandwiching the end portion of the housing member .
Moreover, this invention has the aspect of a water tap provided with a water discharging apparatus and the said water purification cartridge.

Since the end portion of the deformable housing member is sandwiched and held between the outer fitting portion and the inner fitting member of the flow port member, an adhesive for connecting the housing member and the flow port member becomes unnecessary.

According to the invention which concerns on Claims 1-3 , the water purification cartridge which can increase the water flow area of the deformable accommodating member in which the adsorbent is accommodated can be provided.
In the invention which concerns on Claim 4 , the suitable water purification cartridge with which the force which clamps the edge part of an accommodating member increased could be provided.
In the invention which concerns on Claim 5 , the water tap which can increase the water flow area of the deformable accommodating member in which the adsorbent is accommodated can be provided.

The figure which shows typically the example of the system kitchen incorporating the water faucet with a water purification function. FIG. 4A is a partial cross-sectional view of an example of a water discharge head (water discharge device) to which a water purification cartridge is attached, and FIG. 5B is a perspective view illustrating an example of a water discharge unit to which a water purification cartridge is attached. (A) is a longitudinal cross-sectional view which shows the example of a water purification cartridge, and passes along a finger pad part, (b) is a longitudinal cross-sectional view which shows the example of a water purifying cartridge, and does not pass a finger pad part (C) is an enlarged view of B1 part of (b). The disassembled perspective view which shows the example of a water purification cartridge. (A) The longitudinal cross-sectional view which illustrates a mode that an inner cap is attached to the inner side nonwoven fabric of an adsorbent part, (b) is a longitudinal cross-sectional view which illustrates a mode that an outer cap is attached to the outer side nonwoven fabric of an adsorbent part. (A) is a perspective view which shows the example of a hollow fiber membrane case, (b) is a longitudinal cross-sectional view which shows the example of a hollow fiber membrane case. (A) is a figure which shows the example of an internal fitting member, (b) is sectional drawing of the internal fitting member in the position of A1-A1 of (a), (c) is an enlarged view of B2 part of (b). (A) is a longitudinal cross-sectional view which shows the modification of a water purification cartridge, Comprising: The longitudinal cross-sectional view which does not pass a finger rest part, (b) is an enlarged view of B3 part of (a). (A), (b) is a figure which shows the modification of an internal fitting member, (c) is sectional drawing of the internal fitting member in the position of A2-A2 of (b).

  Embodiments of the present invention will be described below. Of course, the following embodiments are merely examples of the present invention, and all the features shown in the embodiments are not necessarily essential to the means for solving the invention.

(1) Overview of water purification cartridge and faucet:
1-9 has shown the example of the water purification cartridge of this technique. FIG. 1 shows an example of a faucet of the present technology. 1 to 9 are schematic diagrams, and the enlargement ratios in the respective directions shown in these drawings may be different, and the respective drawings may not be matched.

  The water purification cartridge 20 illustrated in FIGS. 1 to 3 includes a deformable housing member (for example, the outer nonwoven fabric 31), a flow port member (for example, the hollow fiber membrane case 70), and the inner fitting member 50. The deformable storage member (31) can circulate water and stores the adsorbent AD1. The flow port member (70) has a water flow port (for example, the flow port 75) and an outer fitting portion 80 into which the end 31b of the housing member (31) is inserted. The inner fitting member 50 is inserted into the inner side 33 of the housing member (31) and sandwiches the end 31b of the housing member (31) with the outer fitting portion 80. The faucet 1 shown in FIG. 1 includes a water discharge device (10) and a water purification cartridge 20.

Since the end 31b of the deformable housing member (31) is sandwiched between the outer fitting portion 80 and the inner fitting member 50 of the flow port member (70), the housing member (31) and the flow port member (70) No adhesive is required to connect the two. Therefore, the said aspect can provide the water purifying cartridge and faucet which can increase the water flow area of the deformable accommodating member in which the adsorbent is accommodated.
Here, the housing member includes a nonwoven fabric, a woven fabric, a net, a filter paper, and the like. The shape of the housing member includes a cylindrical shape such as a cylindrical shape or a rectangular tube shape.
For the accommodation member to be deformable, the accommodation member is compressed (the volume is changed) by the internal fitting member or the like, and the accommodation member is bent by the internal fitting member or the like without any volume change (for example, an outer fitting portion is possible). And the like).
Adsorbents include activated carbon, ion exchangers, and the like.
The concept of the water purification cartridge 20 includes a water purification cartridge 20A shown in FIG. The concept of the internal fitting member 50 includes an internal fitting member 50A shown in FIG.

  The inner fitting member 50 may not be annular, but may be annular. Since the inner fitting member 50 inserted into the inner side 33 of the deformable housing member (31) is annular, the inner fitting member 50 pushes the housing member (31) outward. It becomes possible to increase power. Therefore, this aspect can provide a suitable water purification cartridge and water faucet with increased force for clamping the end of the housing member.

  The inner fitting member 50 may not be flexible, but may be flexible. The flow port member (70) may have a connecting portion 76 against which the end portion 31b of the housing member (31) abuts. The connecting portion 76 may include a groove 77 into which at least a part of the inner fitting member 50 is inserted, and an inscribed portion 78 that enters and contacts the inner side 53 of the inner fitting member 50. In this aspect, the inscribed portion 78 that enters the inner side 53 of the flexible inner fitting member 50 that is inserted into the inner side 33 of the deformable housing member (31) suppresses inward bending of the inner fitting member 50. Therefore, it becomes possible to increase the force with which the inner fitting member 50 pushes the housing member (31) outward. Therefore, this aspect can provide a suitable water purification cartridge and water faucet with increased force for clamping the end of the housing member.

(2) Specific examples of water purification cartridge and faucet:
FIG. 1 schematically shows a system kitchen SY1 incorporating a faucet 1 with a water purification function. In the system kitchen SY1, a cabinet 802, a concave sink 803, a faucet 1, and the like are incorporated in a horizontally extending counter 801. The faucet 1 includes a faucet body 2 that vertically penetrates the counter 801, a water discharge head (a water discharge device) 10 that can be attached to and detached from the faucet body 2, and an opening lever 3 that can be tilted with respect to the faucet body 2 , Etc. A hose 19 passed through the faucet body 2 is connected to the water discharge head 10. The hose 19 supplies tap water from a water supply pipe (not shown) to the water discharge head 10 when the opening lever 3 is open. When the water discharge head 10 is removed from the faucet body 2, the hose 19 is pulled out from the faucet body 2. When the water discharge head 10 is attached to the faucet body 2, the hose 19 is drawn into the faucet body 2. The tap opening lever 3 is configured to supply tap water to the water discharge head 10 via the hose 19 when in the open position (for example, a position above the tilting range), and to be in the closed position (for example, a position below the tilting range). The supply of tap water to the water discharge head 10 is stopped when

  As shown in FIG. 2, the water discharge head 10 has a water discharge part 11 on the distal end side, that is, a downstream side in the water flow direction D1, and a grip part 18 that is attached to and detached from the faucet body 2. A water purification cartridge 20 which is a replacement part is incorporated. Inside the water discharge head 10, the outside of the water purification cartridge 20 is a tap water passage 10a through which tap water flows. The water discharger 11 is provided with a connection port 12 with the water purification cartridge 20 and a switching lever 15 that can be switched between discharging purified water from the connection port 12 or discharging tap water from the tap water passage 10a. . The switching lever 15 stops the tap water when it is on the purified water side (for example, one end side of the rotation range) and discharges the purified water from the water discharger 11, and stops the purified water when it is on the tap water side (for example, the other end side of the rotation range). Tap water is discharged from the water discharger 11.

  As shown in FIG. 2, a male screw 11 a is formed on the outer periphery of the end portion on the upstream side of the water discharge portion 11, and a female screw 18 a is formed on the inner periphery of the end portion on the downstream side of the grip portion 18. The gripping part 18 can be attached to the water discharging part 11 by screwing both the screws 11a, 18a, and the gripping part 18 can be removed from the water discharging part 11 by removing the female screw 18a from the male screw 11a.

  The replaceable water purification cartridge 20 is a hollow fiber membrane case (distribution port member) having an adsorbent portion 30 in which an adsorbent AD1 is accommodated and an accommodating portion 71 of a hollow fiber membrane bundle BH1 in which a plurality of hollow fiber membranes H1 are bundled. 70. The adsorbent part 30 is disposed on the upstream side in the flow direction D1, and the hollow fiber membrane case 70 is disposed on the downstream side in the flow direction D1. The tap water flowing into the water purification cartridge 20 enters the adsorbent part 30 and the hollow fiber membrane bundle housing part 71 of the hollow fiber membrane case 70 in this order, and is purified. Therefore, the adsorbent AD1 and the hollow fiber membrane bundle BH1 are arranged in the water flow direction D1.

  The hollow fiber membrane bundle housing portion 71 is inserted and attached to the water discharge portion 11 in the flow-down direction D1. At this time, the outlet (circulation port) 75 of the hollow fiber membrane bundle housing part 71 is inserted into the connection port 12 of the water discharger 11. The water purification cartridge 20 is fixed to the water discharger 11 with the adsorbent part 30 and the outer fitting part 80 of the hollow fiber membrane case 70 coming out of the water discharger 11. The water purification cartridge 20 is removed by drawing it out of the water discharger 11 in the direction opposite to the flow-down direction D1 (extending direction D2). Accordingly, the water purification cartridge 20 can be attached to and detached from the water discharge head 10.

  As shown in FIGS. 3 and 4, the adsorbent portion 30 includes a cylindrical outer nonwoven fabric (housing member) 31, an outer cap 38, a cylindrical inner nonwoven fabric 41, an inner cap 48, and an inner fitting member 50. The adsorbent AD1 is accommodated.

  For the adsorbent AD1, activated carbon, an ion exchanger, a combination thereof, or the like can be used. As the activated carbon as the adsorbent AD1, granular activated carbon, fibrous activated carbon, powdered activated carbon, a combination thereof, or the like can be used. Activated carbon removes trace components such as free residual chlorine and organic matter contained in raw water. As the ion exchanger as the adsorbent AD1, an inorganic ion exchanger such as zeolite (zeolite), an ion exchange resin such as a cation exchange resin or an anion exchange resin, a chelate compound such as a chelate resin, a combination thereof, or the like is used. be able to. Zeolite and cation exchange resin adsorb metal ions by a cation exchange function. The chelate compound selectively adsorbs a specific metal ion through a chelate bond. That is, zeolite, a cation exchange resin, and a chelate compound function as a metal treating agent. Moreover, the ion exchanger of shapes, such as a granular form, a fiber form, and a powder form, can be used for an ion exchanger.

  The outer nonwoven fabric 31 is formed in a cylindrical shape, and water can flow in the inner and outer directions, that is, in the radial direction centered on the virtual axis AX1 passing through the center of the water purification cartridge 20. Therefore, the adsorbent part 30 has an outer surface 32 through which water flows. The downstream end portion 31 b of the outer nonwoven fabric 31 is inserted into and fixed to the outer fitting portion 80 of the hollow fiber membrane case 70. An adsorbent AD <b> 1 is accommodated in the inner side 33 of the outer nonwoven fabric 31. Therefore, the outer nonwoven fabric 31 is a deformable storage member in which the adsorbent AD1 is stored. For this reason, if the outer nonwoven fabric 31 is touched when attaching the water purification cartridge 20 to the water discharge part 11, the bulk density of the adsorbent AD1 accommodated in the inner side 33 may change locally. When the bulk density of the adsorbent AD1 changes locally, the flow of water is biased to a portion with a low bulk density, and the water flow performance may be reduced.

  As shown in FIG. 5B, the outer end 31 a on the upstream side of the outer nonwoven fabric 31 is inserted with the outer cap 38, bent inward, and welded to the outer surface 38 a of the outer cap 38. Thereby, the opening 31o of the edge part 31a of the outer side nonwoven fabric 31 is obstruct | occluded. In addition, you may join the edge part 31a of the outer side nonwoven fabric 31, and the outer cap 38 with an adhesive etc. instead of welding. An upstream end 30 a of the adsorbent portion 30 is formed by the outer cap 38 and the end 31 a of the outer nonwoven fabric 31.

  The inner nonwoven fabric 41 is formed in a cylindrical shape thinner than the outer nonwoven fabric 31, and water can flow inward and outward. The downstream end portion 41 b of the inner nonwoven fabric 41 is inserted into and fixed to the communication port 74 of the hollow fiber membrane case 70. As shown in FIG. 5A, an inner cap 48 is fitted into the upstream end 41 a of the inner nonwoven fabric 41. Thereby, the opening 41o of the edge part 41a of the inner side nonwoven fabric 41 is obstruct | occluded. Adsorbent AD1 exists on the outer side of the inner nonwoven fabric 41. The inner side 43 of the inner side nonwoven fabric 41 is connected to the hollow fiber membrane bundle accommodating part 71 via the connection port 74, and becomes a passage of water from which the substance to be adsorbed has been removed.

  The nonwoven fabrics 31 and 41 can be made of thermoplastic resin (synthetic resin) fibers such as polyolefin (for example, polyethylene (PE) or polypropylene (PP)), polyester, polyamide, vinylon, or combinations thereof.

Although the detailed structure will be described later, the inner fitting member 50 is formed in an annular shape and has flexibility. The outer surface 51 of the inner fitting member 50 is formed with a bulging portion 51c that protrudes slightly outward. As shown in FIG. 3, the inner fitting member 50 is inserted into the inner side 33 of the outer nonwoven fabric 31, and the downstream side edge portion 50 b is further inserted into the groove 77 of the connection portion 76 of the hollow fiber membrane case 70. The outer end portion 31 b of the outer nonwoven fabric 31 is sandwiched between the outer fitting portion 80 of the case 70. That is, the internal fitting member 50 also serves as a part of the adsorbent portion 30. An inscribed portion 78 serving as an inner portion of the groove 77 in the connecting portion 76 enters and contacts the inner side 53 of the inner fitting member 50. As shown in FIG. 3 (c) corresponding to the B1 portion of FIG. 3 (b), the end 31b of the outer nonwoven fabric 31 is deformable, so that the inward bending is suppressed by the inscribed portion 78. It is compressed toward the outer side 32a by the bulging portion 51c of the fitting member 50, and has a high sealing property to prevent the adsorbent AD1 from flowing out. Thereby, the edge part 31b of the outer side nonwoven fabric 31 is firmly hold | maintained by the outer fitting part 80 and the inner fitting member 50. FIG.
For the internal fitting member 50, a synthetic resin, a metal having flexibility, or the like can be used. Examples of the synthetic resin include acrylonitrile butadiene styrene copolymer (ABS), acrylonitrile styrene copolymer (AS), polyolefin (for example, PE and PP), polystyrene (PS), fluororesin (for example, polytetrafluoroethylene), thermoplasticity. A thermoplastic resin such as an elastomer or a combination thereof can be used.

  As described above, the downstream side of the adsorbent part 30, that is, the end part 30 b in the flow-down direction D <b> 1 is held by the outer fitting part 80 of the hollow fiber membrane case 70.

  As shown in FIGS. 3, 4, and 6, the hollow fiber membrane case (distribution port member) 70 includes a main body portion 70 a in which the hollow fiber membrane bundle BH <b> 1 is fixed to a concave portion serving as an internal space 70 c, and an outlet (distribution port). The lid portion 70b having 75 is fitted together. The hollow fiber membrane case 70 having this structure includes an accommodating portion 71 in which the hollow fiber membrane bundle BH1 is accommodated in the internal space 70c, a connecting portion 76 against which the downstream end portion 31b of the outer nonwoven fabric 31 abuts, and the adsorbent portion 30. An outer fitting portion 80 of the end portion 30b is formed.

The hollow fiber membrane bundle BH1 removes fine turbidity of about 1 μm or more, iron rust and general bacteria from the water to be treated. The material of the hollow fiber membrane H1 constituting the hollow fiber membrane bundle BH1 is polyolefin (for example, PE or PP), polysulfone, polyamide, polyimide, cellulose, polytetrafluoroethylene, polyvinylidene fluoride, polyacrylonitrile (PAN), polyether. Sulfone (PES), combinations thereof, and the like can be employed. In addition, aluminum oxide (a stoichiometric ratio of Al ₂ 0 ₃ ), zirconium oxide (a stoichiometric ratio of Zr 0 ₂ ), titanium oxide (a stoichiometric ratio of Ti 0 ₂ ), stainless steel (SUS), glass (for example, An inorganic material such as Shirasu porous glass (SPG) may be added. For example, a hollow fiber membrane bundle BH1 obtained by bundling a plurality of hollow fiber membranes H1 bent into a U-shape is inserted from the closed end BH1a into the recess of the main body 70a, and the open end BH1b is fixed with a potting agent. When the lid portion 70b is fitted to the main body portion 70a so as to cover the BH1b, the hollow fiber membrane case 70 in which the hollow fiber membrane bundle BH1 is accommodated is formed. Potting agents include curable resins such as thermoplastic resin adhesives such as hot melt, urethane resin adhesives, epoxy resin adhesives, silicone resin adhesives, unsaturated polyester resin adhesives, and phenol resin adhesives. A system adhesive or the like can be used.

The hollow fiber membrane bundle housing portion 71 is formed with a communication port 74 that faces the closed end BH1a of the hollow fiber membrane bundle BH1 and an outflow port 75 that faces the open end BH1b of the hollow fiber membrane bundle BH1. .
In the connection portion 76, the communication port 74 is formed, and a groove 77 is formed around the communication port 74. As shown in FIG. 3C, the downstream end portion 31 b of the outer nonwoven fabric 31 and a part of the inner fitting member 50 are inserted into the groove 77. The connecting portion 76 has an inscribed portion 78 that enters and contacts the inner side 53 of the inner fitting member 50.

The outer fitting portion 80 extends from the hollow fiber membrane bundle housing portion 71 to the adsorbent portion 30 side (extending direction D2) outside the connection portion 76, and the downstream end portion 31b of the outer nonwoven fabric 31 is inserted. The outer fitting portion 80 sandwiches the end portion 31 b of the outer nonwoven fabric 31 with the inner fitting member 50. Accordingly, the outer fitting portion 80 holds the end portion 30 b on the downstream side of the adsorbent portion 30 on the outer side 32 a of the outer side surface 32 of the adsorbent portion 30.
The outer fitting portion 80 extends from the hollow fiber membrane bundle accommodating portion 71 to the adsorbent portion 30 side (extending direction D2) over the entire circumference around the axis AX1, and the holding portion 81 It has a finger rest 85 that partially extends toward the adsorbent 30 (extending direction D2).

  The holding portion 81 is formed in a substantially cylindrical shape, and holds the downstream end portion 30 b of the adsorbent portion 30 on the outer side 32 a of the outer side surface 32 of the adsorbent portion 30. The extended length of the holding portion 81 only needs to be long enough to sandwich the end portion 31 b of the outer nonwoven fabric 31 with the inner fitting member 50. In order to increase the water flow area of the outer side surface 32 of the adsorbent part 30 as much as possible, the extended length of the holding part 81 of this specific example is set to be short enough to be grasped by a finger.

  The finger pad 85 includes first and second pad parts 86 and 87 that are spaced apart from each other on the outer side 32 a of the outer surface 32 of the adsorbent part 30 and extend from the holding part 81 in the extending direction D2. In FIG. 6A, a portion surrounded by a two-dot chain line shows the outer fitting portion 80 including the first abutting portion 86 and a view of the vicinity thereof seen from a direction orthogonal to the axis AX1. The first abutting portion 86 and the second abutting portion 87 are disposed on the opposite sides of 180 ° about the axis AX1. Therefore, as shown in FIG. 3A, the first abutting portion 86 and the second abutting portion 87 are 180 ° opposite to each other with the adsorbent portion 30 inserted in the holding portion 81 interposed therebetween. The tip portions 86a and 87a of the respective abutting portions 86 and 87 extending from the holding portion 81 in the extending direction D2 are substantially semicircular as the distance from the holding portion 81 decreases as viewed from the outside in the radial direction centering on the axis AX1. Is formed. Thereby, the resistance of the tap water which flows the outer side of the adsorbent part 30 in the flow-down direction D1 is reduced.

  Since the holding unit 81 has a function of holding the outer side surface 32 of the adsorbent unit 30, the inner side surface of the finger pad unit 85 is in contact with the outer side surface 32 of the adsorbent unit 30 as shown in FIG. There is no need to do so, and it may be separated from the outer surface 32 of the adsorbent portion 30.

  Non-slip irregularities 90 are formed on the outer surface 80a of the outer fitting portion 80 in a portion extending from the holding portion 81 to the respective abutting portions 86 and 87. Each unevenness 90 is formed with a plurality of grooves perpendicular to the axis AX1 and oriented around the axis AX1.

  The hollow fiber membrane case 70 and the caps 38 and 48 may be made of thermoplastic resin (synthetic resin) such as ABS, AS, polyolefin (for example, PE or PP), PS, fluororesin, or a combination thereof. .

  Next, the details of the structure of the internal fitting member 50 will be described with reference to FIG. 7A shows the downstream side of the internal fitting member 50, FIG. 7B shows a cross section of the internal fitting member 50 at the position A1-A1 in FIG. 7A, and FIG. 7B is an enlarged view of the B2 portion. The outer surface 51 of the inner fitting member 50 shown in FIG. 7 has a base 51a designed to be parallel to the axis AX1, an inclined portion 51b formed in the vicinity of the downstream edge 50b, and an outer side from the base 51a. A bulging portion 51c protruding slightly to 51d is formed. The inner surface 52 of the inner fitting member 50 includes a base 52a designed to be parallel to the axis AX1, a downstream inclined portion 52b formed in the vicinity of the downstream edge 50b, and an upstream edge 50a. An upstream inclined portion 52c formed in the vicinity is formed.

The inclined portion 51b of the outer side surface 51 has an inclination toward the inner side 53 toward the downstream edge portion 50b. For this reason, when inserting the inner fitting member 50 into the inner side 33 of the outer nonwoven fabric 31, the inner fitting member 50 is guided to the inner side 33 of the outer nonwoven fabric 31 by the inclined portion 51b.
The downstream inclined portion 52b of the inner side surface 52 has an inclination toward the outer side 51d toward the downstream edge portion 50b. For this reason, when the inner fitting member 50 is inserted into the groove 77 of the hollow fiber membrane case 70, the downstream edge 50 b is guided into the groove 77.

The bulging part 51c of the outer side surface 51 presses the outer nonwoven fabric end part 31b sandwiched between the outer fitting part 80 of the hollow fiber membrane case 70 to the outer side 51d. By forming the bulging portion 51 c only on a part of the outer side surface 51, the surface pressure applied to the end portion 31 b of the outer nonwoven fabric 31 is increased, and resistance when the inner fitting member 50 is inserted into the inner side 33 of the outer nonwoven fabric 31 is increased. Less. For this reason, it is easy to attach the inner fitting member 50 to the water purification cartridge 20, and the force for holding the end 31 b of the outer nonwoven fabric 31 is strong.
The upstream inclined portion 52c of the inner surface 52 has an inclination toward the outer side 51d as it goes toward the upstream edge portion 50a. For this reason, the quantity of adsorbent AD1 accommodated in the inner side 33 of the outer side nonwoven fabric 31 increases, and the lifetime of the water purification cartridge 20 becomes long by that much.

Furthermore, with reference to FIG.2, 3, the flow of the water of the water discharging head 10 with which the water purification cartridge 20 was attached is demonstrated.
When the switching lever 15 is on the water purification side, tap water outside the water purification cartridge 20 in the water discharge head 10 does not flow out. Tap water from the hose 19 shown in FIG. 1 enters the inner side 33 from the outer side 32 of the outer nonwoven fabric 31 as indicated by the arrows shown in FIGS. 3A and 3B, and is adsorbed by the adsorbent AD1 (for example, activated carbon). The target substance (for example, trace components such as free residual chlorine and organic substances) is removed. The water inside the outer nonwoven fabric 33 enters the inner 43 of the inner nonwoven fabric 41 and enters the internal space 70 c of the hollow fiber membrane bundle housing portion 71 through the communication port 74. The water in the internal space 70c moves from the closed end BH1a to the open end BH1b in the hollow fiber membrane bundle BH1, and fine turbidity of about 1 μm or more, iron rust, and general bacteria are removed. The purified water from the open end BH1b flows out from the outlet 75 and is discharged from the water discharger 11.

  When the switching lever 15 is on the tap water side, the purified water from the purified water cartridge 20 does not flow out. The tap water from the hose 19 flows in the flow-down direction D <b> 1 outside the water purification cartridge 20 in the water discharge head 10 and is discharged from the water discharge unit 11.

  When removing the used water purification cartridge 20 from the water discharging head 10, first, the gripping portion 18 is turned in a direction to release the screwing of the screws 11 a and 18 a, and the gripping portion 18 is removed from the water discharging portion 11. At this time, as shown in FIG. 2 (b), the adsorbent part 30 and the external fitting part 80 in the water purification cartridge 20 come out from the water discharge part 11. Next, the outer fitting portion 80 is gripped by applying a finger to the non-slip irregularities 90 extending from the holding portion 81 to the finger rest portion 85, and the water purification cartridge 20 is removed from the water discharge portion 11 in the direction opposite to the flow direction D1 (extension direction). D2) can be pulled out. When a new water purification cartridge 20 is attached to the water discharge head 10, the outer fitting portion 80 is gripped by applying a finger to the non-slip unevenness 90 extending from the holding portion 81 to the finger pad 85, and the water purification cartridge 20 from the outlet 75 to the water discharge portion 11. May be pushed in the flow direction D1. As illustrated in FIG. 2A, when the outlet 75 is inserted into the connection port 12 of the water discharger 11, the water purification cartridge 20 is attached to the water discharger 11.

  When attaching / detaching the water purification cartridge 20 to / from the water discharger 11, the finger pad 85 extends partially from the holding part 81 toward the adsorbent part 30, so that the adsorbent part 30 can be touched without touching it. It can be gripped strongly over the finger rest 85. Further, since the abutting portions 86 and 87 constituting the finger resting portion 85 are 180 ° opposite to each other with the axis AX1 as the center, it is easy to apply a force to the finger hitting the outer fitting portion 80. Furthermore, since the non-slip irregularities 90 are formed on the portion of the outer fitting portion 80 where the finger is applied, the position where the finger is applied is easy to see and the outer fitting portion 80 is gripped so as not to slip without touching the adsorbent portion 30. be able to. Therefore, the water purification cartridge 20 can be easily attached to and detached from the water discharger 11. Further, since the outer fitting portion 80 can be grasped without touching the deformable outer nonwoven fabric 31, the water purification cartridge 20 is prevented so that the bulk density of the adsorbent AD1 accommodated in the inner side 33 of the outer nonwoven fabric 31 does not change locally. Can be attached to the water discharger 11, and good water flow performance is maintained. Therefore, this water purification cartridge has a long life. Furthermore, since the water purification cartridge 20 can be attached to and detached from the water discharger 11 without touching the outer nonwoven fabric 31 through which water circulates, discomfort caused by touching the outer nonwoven fabric 31 can be prevented.

Hereinafter, with reference to FIGS. 3-7, the example of the manufacturing method of the water purification cartridge 20 is demonstrated.
First, the end 41b of the inner nonwoven fabric 41 is inserted into the communication port 74 of the hollow fiber membrane case 70, and the inner cap 48 is attached to the upstream end 41a of the inner nonwoven fabric 41 as shown in FIG. Thereby, the opening 41o of the edge part 41a of the inner side nonwoven fabric 41 is obstruct | occluded, and the inner side 43 of the inner side nonwoven fabric 41 becomes a channel | path of the water purified by adsorption agent AD1.

  Next, the end 31 b of the outer nonwoven fabric 31 is inserted from the outer fitting portion 80 of the hollow fiber membrane case 70 to the groove 77, and the inner fitting member 50 is put into the groove 77 from the inner side 33 of the outer nonwoven fabric 31. Here, since the inclined portion 51 b is formed on the outer surface 51 of the inner fitting member 50, the inner fitting member 50 is guided to the inner side 33 of the outer nonwoven fabric 31, and the inner fitting member 50 can be easily inserted. Further, since the bulging portion 51 c is formed only on a part of the outer side surface 51 of the inner fitting member 50, there is little resistance when the inner fitting member 50 is inserted into the inner side 33 of the outer nonwoven fabric 31, and the inner fitting member 50. Is easy to install. Further, since the downstream inclined portion 52b is formed on the inner surface 52 of the inner fitting member 50, the downstream edge 50b of the inner fitting member 50 is guided into the groove 77, and the downstream edge 50b is inserted. easy.

  When the downstream edge 50b of the inner fitting member 50 is inserted into the groove 77, the end 31b of the deformable outer nonwoven fabric 31 is sandwiched between the outer fitting portion 80 and the inner fitting member 50, and FIG. As shown in FIG. 4, the outer fitting portion 50 is compressed toward the outer side 32a by the bulging portion 51c of the outer side surface 51. Since the bulging portion 51c is only a part of the outer side surface 51, the surface pressure applied to the outer nonwoven fabric end portion 31b is high. That is, since the outer nonwoven fabric end 31b is firmly held by the outer fitting portion 80 and the inner fitting member 50, the outer nonwoven fabric 31 and the hollow fiber membrane case 70 are connected without using an adhesive. Here, an adsorbent AD1 such as granular activated carbon is placed inside the outer nonwoven fabric 41 and inside the outer nonwoven fabric 31, and the outer cap 38 is placed on the upstream end 31a of the outer nonwoven fabric 31 as shown in FIG. Is inserted, the end 31a of the outer nonwoven fabric 31 is bent inward, and is welded to the outer surface 38a of the outer cap 38. Thereby, the opening 31o of the end 31a of the outer nonwoven fabric 31 is closed, and the inner side 33 of the outer nonwoven fabric 31 outside the inner nonwoven fabric 41 serves as a housing space for the adsorbent AD1, and the water purification cartridge 20 is formed.

  As described above, since the end portion 31b of the deformable outer nonwoven fabric 31 is sandwiched between the outer fitting portion 80 and the inner fitting member 50 of the hollow fiber membrane case 70, the outer nonwoven fabric 31 and the hollow fiber membrane case 70 are connected to each other. No adhesive is required for connection. Therefore, this water purification cartridge can increase the water flow area of the deformable storage member in which the adsorbent is stored. When hot melt is used as the adhesive, it is necessary to warm the hot melt in advance in order to manufacture the water purification cartridge. Since this example does not require such work, the production efficiency of the water purification cartridge can be improved.

  Moreover, since the outer nonwoven fabric end part 31b is compressed toward the outer side 32a by the bulging part 51c of the inner fitting member 50, the sealing performance that prevents the adsorbent AD1 from flowing out is high. Further, even if a gap is formed between the outer nonwoven fabric 31 and the outer fitting portion 80 due to variation in molding or the like, the outer nonwoven fabric 31 can be deformed, so that the end portion 31b of the outer nonwoven fabric 31 is attached to the outer fitting portion by the inner fitting member 50. 80. Therefore, the outer nonwoven fabric end portion 31 b is firmly held by the outer fitting portion 80 and the inner fitting member 50. Furthermore, since the internal fitting member 50 that prevents the adsorbent AD1 from flowing out also serves as a part of the site that accommodates the adsorbent AD1, the cost of the water purification cartridge is reduced.

(3) Modification:
Various modifications can be considered for the present invention.
For example, the faucet provided with the water purification cartridge may be provided in a place other than the system kitchen.
The water discharge device may be a water discharge head that discharges only purified water, in addition to a water discharge head that can switch between purified water and tap water.
Although it is preferable that the adsorbent and the hollow fiber membrane bundle arranged in the flow-down direction are upstream of the adsorbent and the hollow fiber membrane bundle is downstream, the hollow fiber membrane bundle may be upstream and the adsorbent may be downstream.
In addition to the hollow fiber membrane case 70, the circulation port member may be a member having a circulation port without accommodating the hollow fiber membrane bundle. The circulation port may be a water inflow port in addition to the water outflow port.
In addition to being formed on the outer surface of the hollow fiber membrane case on the outer surface of the hollow fiber membrane case, the unevenness for slipping may be formed only on the finger pad without being formed on the holder. It may be formed only on the holding part without being formed on the contact part. The groove of the unevenness 90 for preventing slipping may be in a direction shifted from the direction orthogonal to the axis AX1.

The first and second contact portions may be arranged on the opposite side of 180 ° centering on an imaginary axis AX1 passing through the center of the water purification cartridge, or arranged at an interval of 120 ° about the axis AX1. Etc., it may be arranged at a location that is not on the opposite side of 180 °.
The finger contact part may be a part connected to one in addition to a plurality of parts spaced apart from each other and extending from the holding part to the adsorbent part. The finger pad may include three or more pad parts that are spaced apart from each other about the axis AX1. Furthermore, a water purification cartridge including a circulation port member without a finger pad, a water purification cartridge including a circulation port member without slipperiness and the like, and the like are also included in the present technology.

  The shape of the internal fitting member may be a shape lacking a part of the ring, a plate shape having a hole through which the inner nonwoven fabric 41 penetrates, or the like other than the annular shape. When the inner fitting member has a plate shape, inward bending is suppressed. Therefore, the sealing performance for preventing the adsorbent AD1 from flowing out is high, and the outer nonwoven fabric end 31b is firmly held by the outer fitting portion 80 and the inner fitting member 50.

In addition to inserting both the end of the housing member and the end of the internal fitting member into the groove of the flow port member, only the end of the internal fitting member is inserted without inserting the end of the housing member. Also good.
FIG. 8A shows a longitudinal section that shows a water purification cartridge 20A according to a modification, and does not pass through the finger pad 85. FIG. FIG. 8B shows an enlarged B3 portion of FIG. In the groove 77 of the hollow fiber membrane case 70 of the water purification cartridge 20A, the end 31b of the outer nonwoven fabric 31 is not inserted, and the downstream edge 50b of the inner fitting member 50 is inserted. An inscribed portion 78 serving as an inner portion of the groove 77 in the connecting portion 76 enters and contacts the inner side 53 of the inner fitting member 50. The bulging portion 51 c of the internal fitting member 50 protrudes from the groove 77. The outer nonwoven fabric end portion 31 b is compressed toward the outer side 32 a by the bulging portion 51 c of the inner fitting member 50 whose inward bending is suppressed by the inscribed portion 78. Therefore, this modified example also has a high sealing property to prevent the adsorbent AD1 from flowing out, and the outer nonwoven fabric end 31b is firmly held by the outer fitting portion 80 and the inner fitting member 50.

A structure that suppresses inward bending may also be formed in the inner fitting member itself.
Fig.9 (a) has shown the external appearance of 50 A of internal fitting members which concern on a modification. FIG. 9B shows the downstream side of the internal fitting member 50A. FIG.9 (c) has shown the cross section of 50 A of internal fitting members in the position of A2-A2 of FIG.9 (b). A lattice 58 in which a plurality of vertical frame portions 58a and a plurality of horizontal frame portions 58b are orthogonal (intersected) is formed on the inner side 53 of the inner fitting member 50A that does not enter the groove 77 of the hollow fiber membrane case 70. . The outer nonwoven fabric end portion 31 b is compressed toward the outer side 32 a by the bulging portion 51 c of the inner fitting member 50 </ b> A whose inward bending is suppressed by the lattice 58. Therefore, this modified example also has a high sealing property for preventing the adsorbent AD1 from flowing out, and the outer nonwoven fabric end 31b is firmly held by the outer fitting portion 80 and the inner fitting member 50A.

  From the above, even if the hollow fiber membrane case 70 does not have the groove 77, the inner fitting member 50A is restrained from bending inward by the lattice 58, and the bulging portion 51c extends the outer nonwoven fabric end portion 31b toward the outer side 32a. Compress to Accordingly, in this case as well, the sealing performance for preventing the adsorbent AD1 from flowing out is high, and the outer nonwoven fabric end 31b is firmly held by the outer fitting portion 80 and the inner fitting member 50A.

(4) Conclusion:
As described above, according to the present invention, there are provided various techniques such as a water purification cartridge, a water faucet, and the like that can increase the water passage area of the deformable storage member that stores the adsorbent according to various aspects. Can do. Needless to say, the above-described basic actions and effects can be obtained even with a technique that does not have the constituent requirements according to the dependent claims but includes only the constituent requirements according to the independent claims.
In addition, the configurations disclosed in the embodiments and modifications described above are mutually replaced, the combinations are changed, the known technology, and the configurations disclosed in the embodiments and modifications described above are mutually connected. It is possible to implement a configuration in which replacement or combination is changed. The present invention includes these configurations and the like.

1 ... faucet,
10 ... Water discharge head (water discharge device), 10a ... Tap water passage,
11 ... Water discharge part, 12 ... Connection port, 15 ... Switching lever,
18 ... gripping part, 19 ... hose,
20, 20A ... water purification cartridge,
30 ... Adsorbent part, 30a, 30b ... End part,
31 ... Outer non-woven fabric (accommodating member), 31a, 31b ... end,
32 ... outer side, 32a ... outer side, 33 ... inner side,
38 ... outer cap, 38a ... outer surface,
41 ... inner nonwoven fabric, 41a, 41b ... end, 43 ... inner, 48 ... inner cap,
50, 50A: internal fitting member, 50a: upstream edge, 50b: downstream edge,
51 ... Outer surface, 51a ... Base, 51b ... Inclined part, 51c ... Swelling part, 51d ... Outer side,
52 ... Inner surface, 52a ... Base, 52b ... Downstream inclined part, 52c ... Upstream inclined part,
53 ... inner side, 58 ... lattice, 58a ... vertical frame part, 58b ... horizontal frame part,
70 ... hollow fiber membrane case (distribution port member),
70a ... main body, 70b ... lid, 70c ... internal space,
71 ... accommodating part, 74 ... communication port,
75 ... Outlet (distribution port),
76 ... connection part, 77 ... groove, 78 ... inscribed part,
80 ... external fitting part, 80a ... outer surface, 81 ... holding part,
85: finger pad, 86, 87 ... pad, 86a, 87a ... tip,
90 ... Unevenness for anti-slip,
AD1 ... adsorbent,
BH1 ... hollow fiber membrane bundle, BH1a ... closed end, BH1b ... open end,
D1 ... Flowing direction, D2 ... Extension direction,
H1 ... hollow fiber membrane.

Claims (5)

A deformable housing member having an outer surface through which water can flow from the outside to the inside and in which the adsorbent is housed;
In a water purification cartridge comprising a water distribution port and a flow port member having an outer fitting portion into which an end of the housing member is inserted,
An inner fitting member inserted inside the deformable housing member ,
The outer fitting portion is disposed in contact with the outer surface of the end portion of the housing member, the inner fitting member is disposed in contact with the inner surface of the end portion of the housing member, and the outer fitting portion and the inner fitting are arranged. The water purification cartridge which the member hold | maintains on both sides of the edge part of the said storage member . A non-woven fabric, a woven fabric, a net, or a filter paper, and a deformable housing member that houses an adsorbent;
In a water purification cartridge comprising a water distribution port and a flow port member having an outer fitting portion into which an end of the housing member is inserted,
An inner fitting member inserted inside the deformable housing member ,
The outer fitting portion is disposed in contact with the outer surface of the end portion of the housing member, the inner fitting member is disposed in contact with the inner surface of the end portion of the housing member, and the outer fitting portion and the inner fitting are arranged. The water purification cartridge which the member hold | maintains on both sides of the edge part of the said storage member . A deformable housing member through which water can flow and the adsorbent is housed;
A water distribution port, and a flow port member having an outer fitting portion into which an end of the housing member is inserted,
In the water purification cartridge removable from the water discharge device inside the water discharge device,
An inner fitting member inserted inside the deformable housing member ,
The outer fitting portion is disposed in contact with the outer surface of the end portion of the housing member, the inner fitting member is disposed in contact with the inner surface of the end portion of the housing member, and the outer fitting portion and the inner fitting are arranged. The water purification cartridge which the member hold | maintains on both sides of the edge part of the said storage member . The inner fitting member is flexible;
The flow port member has a connection portion against which an end of the housing member abuts.
And the junction, possess at least a groove portion falls within said fitting member, and inscribed portion in contact with the inside of the inner fitting member enters the interior of said fitting member,
The said external fitting part and the said internal fitting member which is contacting the outer side of the said inscribed part hold | maintain on both sides of the edge part of the said accommodating member. The water purification cartridge described in 1. The water purification cartridge according to any one of claims 1 to 4,
A water faucet comprising a water discharging device to which the water purification cartridge can be attached and detached.

Images