JP2016159254A - Water purification cartridge and water faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water purification cartridge that is attachable/detachable to/from a water discharge device without touching an adsorbent part, and to provide a water faucet.SOLUTION: Provided is a water purification cartridge 20 including an adsorbent part 30 and a hollow fiber membrane casing 70, and in which an adsorbent AD1 and a hollow fiber membrane bundle BH1 are aligned in a water downflow direction D1, and the cartridge is attachable/detachable to/from a water discharge device (for example, a water discharge head 10). The adsorbent part 30 has an outer side surface 32 through which the water flows, and houses therein the adsorbent AD1. The hollow fiber membrane casing 70 includes a housing part 71 for the hollow fiber membrane bundle BH1, a holding part 81 for holding an end portion 30b in the downflow direction D1 of the adsorbent part 30, and a finger touch part 85 partially extending from the holding part 81 toward the adsorbent part 30 on the outer side 32a of the outer side surface 32 of the adsorbent part 30.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a water purification cartridge that can be attached to and detached from a water discharge device, and a water 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.

  The water purification cartridge disclosed in Patent Document 1 has an activated carbon part and a hollow fiber membrane part connected in series to the activated carbon part. The activated carbon part has a pair of opposed cap parts and a small-diameter hollow part connecting them, and a cylindrical nonwoven fabric in which the activated carbon is accommodated is provided around the hollow part. The downstream cap portion has a cylindrical side plate into which the upstream side of the hollow fiber membrane case of the hollow fiber membrane portion is inserted. The cylindrical side plate is formed with a pair of hooks protruding inward at opposing positions. An annular groove into which the pair of hooks are fitted is formed around the circumference on the upstream side of the hollow fiber membrane case. A water purification cartridge having an activated carbon part and a hollow fiber membrane part is mounted inside a water discharge pipe connected to a water discharge port, and the raw water that has flowed through the activated carbon is filtered through the hollow fiber membrane. The filtered purified water is discharged from the water outlet.

JP-A-2005-768

When the water purification cartridge is installed inside the water discharge pipe, if you touch the cylindrical nonwoven fabric of the activated carbon part with your hand, the bulk density of the activated carbon contained inside the cylindrical nonwoven fabric will change locally, reducing the water flow performance. there's a possibility that. When the water flow performance of the water purification cartridge is lowered, the life of the water purification cartridge is shortened.
In addition, the above problems also exist in a water purification cartridge having an adsorbent portion in which an adsorbent other than activated carbon is accommodated, and various faucets.

  The present invention has an object to provide a water purification cartridge and a faucet that can be attached to and detached from the water discharging device without touching the adsorbent part.

The present invention is a water purification cartridge in which an adsorbent and a hollow fiber membrane bundle are arranged in the direction of water flow, and is detachable from a water discharge device,
An adsorbent part having an outer surface through which water flows and containing the adsorbent;
The hollow fiber membrane bundle housing part, the holding part for holding the end part in the flow-down direction of the adsorbent part, and the adsorbent part side partially from the holding part outside the outer surface of the adsorbent part And a hollow fiber membrane case having a finger pad extending to the side.
Moreover, this invention has the aspect of a water tap provided with a water discharging apparatus and the said water purification cartridge.

  In the hollow fiber membrane case, the finger pad extends partly from the holding part of the adsorbent part to the adsorbent part side outside the outer surface of the adsorbent part. The flow of water is not suppressed in the portion where the finger pad is not extended. In addition, the water purification cartridge can be attached to and detached from the water discharging device by placing a finger on the finger pad.

Furthermore, the present invention is a water purification cartridge in which the adsorbent and the hollow fiber membrane bundle are arranged in the water flow direction, and is detachable from the water discharge device,
An adsorbent part having an outer surface through which water flows and containing the adsorbent;
A hollow fiber membrane case having a housing portion for the hollow fiber membrane bundle, and an outer fitting portion for holding an end portion in the flow-down direction of the adsorbent portion outside the outer surface of the adsorbent portion,
An anti-slip unevenness is formed on the outer surface of the outer fitting portion.
Furthermore, this invention has the aspect of a water tap provided with a water discharging apparatus and the said water purification cartridge.

  In the hollow fiber membrane case, the water purification cartridge can be easily attached to and detached from the water discharging device by placing a finger on the outer fitting portion having the non-slip irregularities formed on the outer surface.

According to the invention which concerns on Claim 1, Claim 5, the water purification cartridge which can be attached or detached with respect to a water discharging apparatus, without touching an adsorbent part can be provided.
In the invention which concerns on Claim 2, the water purification cartridge which can be easily attached or detached with respect to the water discharging apparatus, without touching an adsorbent part can be provided.
In the invention which concerns on Claim 3, it becomes possible to increase the water flow area of the outer surface of an adsorbent part.
In the invention which concerns on Claim 4, the suitable water purification cartridge which can be attached or detached with respect to a water discharging apparatus, without touching an adsorbent part can be provided.
In the invention which concerns on Claim 6, Claim 7, the faucet which can attach or detach a water purification cartridge with respect to a water discharging apparatus, without touching an adsorbent part 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 typically the example of a hollow fiber membrane case which has two contact parts and an unevenness | corrugation, (b) is the finger pad part arrange | positioned exceeding 180 degrees, and the hollow fiber membrane which has an unevenness | corrugation The figure which shows the example of a case typically, (c) is a longitudinal cross-sectional view of the hollow fiber membrane case shown in (b), (d) is a typical example of the hollow fiber membrane case which has three contact parts and an unevenness | corrugation. FIG. (A) is a perspective view which shows the example of the hollow fiber membrane case which does not have the unevenness | corrugation for slip prevention, and has a finger rest part, (b) is the example of the hollow fiber membrane case which has an uneven part for slip prevention without a finger rest part FIG.

  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:
FIGS. 1-8 shows the example of the water purification cartridge of this technique, and FIG. 1 has shown the example of the faucet of this technique. 1 to 8 are schematic views, 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 shown in FIGS. 1 to 3 includes an adsorbent part 30 and a hollow fiber membrane case 70, and the adsorbent AD1 and the hollow fiber membrane bundle BH1 are arranged in the water flow direction D1, and a water discharge device (for example, It is detachable with respect to the water discharge head 10). The adsorbent part 30 has an outer surface 32 (for example, an outer nonwoven fabric 31) through which water flows, and the adsorbent AD1 is accommodated therein. The hollow fiber membrane case 70 includes a housing part 71 for the hollow fiber membrane bundle BH1, a holding part 81 for holding the end part 30b in the flow-down direction D1 of the adsorbent part 30, and an outer side 32a of the outer side surface 32 of the adsorbent part 30. And a finger rest part 85 extending partially from the holding part 81 toward the adsorbent part 30. The faucet 1 shown in FIG. 1 includes a water discharge device (10) and a water purification cartridge 20.

In the hollow fiber membrane case 70, the finger pad 85 extends partially from the holding part 81 of the adsorbent part 30 toward the adsorbent part 30 on the outer side 32 a of the outer side 32 of the adsorbent part 30. The flow of water is not suppressed in the portion where the finger pad 85 does not extend from the holding portion 81 on the outer surface 32 of the portion 30. In addition, the water purification cartridge 20 can be attached to and detached from the water discharging device (10) by placing a finger on the finger pad 85. Therefore, the said aspect can provide the water purifying cartridge and water tap which can be attached or detached with respect to the water discharging apparatus, without touching an adsorbent part.
Here, the adsorbent includes activated carbon, ion exchangers, and the like.
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.
The concept of the hollow fiber membrane case 70 includes hollow fiber membrane cases 70A to 70D shown in FIGS.

As shown in FIG. 6 and the like, the finger contact portion 85 may include first and second contact portions 86 and 87 that are opposite to each other with the adsorbent portion 30 in between. Since this aspect makes it easy to apply a finger to the finger contact portion 85, it is possible to provide a water purification cartridge and a faucet that can be easily attached to and detached from the water discharge device without touching the adsorbent portion.
In addition, a 1st and 2nd contact part may be arrange | positioned 180 degrees on the opposite side centering on the virtual axis | shaft (AX1) which passes along the center of a water purification cartridge, and a space | interval of 120 degrees centering on an axis | shaft (AX1). It may be arranged at a place that is not on the opposite side of 180 °, such as being arranged with a gap.

  In addition, the finger contact portion 85 is separated from each other on the outer side 32 a of the outer surface 32 of the adsorbent portion 30 and extends from the holding portion 81 to the adsorbent portion 30 side. , 87 may be included. Since this aspect can reduce the area of the finger rest part 85, it becomes possible to increase the water flow area of the outer surface of the adsorbent part.

Further, the holding portion 81 may hold the end portion 30b of the adsorbent portion 30 in the flow-down direction D1 on the outer side 32a of the outer side surface 32 of the adsorbent portion 30. Non-slip irregularities 90 may be formed on the outer surface 80a of the hollow fiber membrane case 70 in the portion extending from the holding portion 81 to the finger rest portion 85.
In the above aspect, water is applied to the water discharging device (10) by applying a finger to the non-slip unevenness 90 formed on the outer surface 80a of the hollow fiber membrane case 70 in the portion extending from the holding portion 81 to the finger rest portion 85. The cartridge 20 can be easily attached and detached. Further, since the unevenness 90 for preventing slipping is formed from the holding portion 81 to the finger contact portion 85, the position where the finger is applied is easy to see. Further, since the non-slip unevenness 90 is also formed on the outer surface of the holding portion 81, the finger rest 85 is difficult to bend when the finger is applied to the anti-slip uneven 90, and the finger rest 85 is flexed. The deterioration of the water flow performance of the water purification cartridge 20 due to the water is suppressed. Therefore, a suitable water purification cartridge that can be attached to and detached from the water discharging device without touching the adsorbent portion, and a water faucet can be provided.

  By the way, as shown in FIG.8 (b), the water purification cartridge 20 and the water tap 1 provided with the hollow fiber membrane case 70 which does not have the finger rest part 85 extended partially from the holding | maintenance part 81 are also contained in this technique. Regardless of the presence or absence of the finger pad 85, the hollow fiber membrane case 70 of the water purification cartridge 20 is an external fit that holds the end 30b in the flow direction D1 of the adsorbent 30 on the outer side 32a of the outer surface 32 of the adsorbent 30. Part 80. On the outer side surface 80a of the outer fitting portion 80, unevenness 90 for preventing slipping is formed.

  In the hollow fiber membrane case 70, the water purification cartridge 20 can be easily attached to and detached from the water discharging device (water discharging head 10) by applying a finger to the outer fitting portion 80 having the non-slip irregularities 90 formed on the outer surface. Can do. Therefore, the said aspect can provide the water purifying cartridge and water tap which can be attached or detached with respect to the water discharging apparatus, without touching an adsorbent part.

(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.

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 part 51c of the fitting member 50, and the sealing performance for preventing the adsorbent AD1 from flowing out is also high. 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 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 (circulation 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. Fig.7 (a) has shown the position of the 1st and 2nd contact parts 86 and 87 with the lattice pattern. 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. In FIG. 7A, the position of each unevenness 90 is shown in a lattice pattern.

  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, with reference to FIGS. 3-6, 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.

  Further, 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 inserted into the groove 77 from the inner side 33 of the outer nonwoven fabric 31. Thereby, the edge part 31b of the deformable outer nonwoven fabric 31 is clamped by the outer fitting part 80 and the inner fitting member 50, and the bulging part of the outer surface 51 of the inner fitting member 50 as shown in FIG.3 (c). It is compressed toward the outer side 32a by 51c. 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.

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.

Hereinafter, an example of a method for replacing the water purification cartridge 20 will be described.
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 the adsorbent part 30. 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.

(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.
The hollow fiber membrane case and the adsorbent part are bonded to each other by using the inner fitting member 50 without using the inner fitting member 50 in addition to the outer fitting part 80 and the inner fitting member 50 being joined by sandwiching the outer nonwoven fabric end 31b. The outer fitting portion 80 and the outer nonwoven fabric end portion 31b may be bonded together by bonding.
The deformable storage member in which the adsorbent is stored includes a woven fabric, a net, a filter paper, and the like in addition to the non-woven fabric (outer non-woven fabric 31). The shape of the housing member includes a cylindrical shape such as a cylindrical shape or a rectangular tube shape. The accommodating member with which the end portion is sandwiched is deformable. The accommodating member is compressed by the internal fitting member or the like (the volume is changed), and the accommodating member is bent by the internal fitting member or the like without a change in volume. Etc. are included.
A structure such as a lattice that suppresses inward bending may be formed on the inner side of the inner fitting member. Further, the shape of the inner 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.
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 finger rest part 85 may be a part connected to one other than a plurality of parts spaced apart from each other and extending from the holding part 81 to the adsorbent part 30 side.
FIG. 7 (b) schematically shows a hollow fiber membrane case 70A having a finger contact portion 85 that extends over 180 ° around the axis AX1. In FIG.7 (b), the position of the finger rest part 85 is shown by the lattice pattern. In the hollow fiber membrane case 70A shown in FIG. 7B, a pair of anti-slip 90 on the outer surface 80a of the portion extending from the holding portion 81 to the finger rest portion 85 that are 180 ° opposite to each other about the axis AX1. Is formed. Here, the two places where the unevenness 90 is formed in the finger contact part 85 become the contact parts 86 and 87. FIG. 7C shows a longitudinal section showing the hollow fiber membrane case 70 </ b> A and passing through the anti-slip unevenness 90.

  When attaching the water purification cartridge 20 having the hollow fiber membrane case 70 </ b> A to the water discharge head 10, the outer fitting portion 80 is grasped by applying a finger to the non-slip unevenness 90 extending from the holding portion 81 to the finger contact portion 85. What is necessary is just to push the water purification cartridge 20 into the flow-down direction D1 from the outflow port 75. Since the finger contact part 85 extends from the holding part 81 to the adsorbent part 30 side over a range exceeding 180 °, the adsorbent part 30 can be easily gripped from the holding part 81 to the finger contact part 85 without being touched. . Therefore, this modification can also be attached to and detached from the water discharging device without touching the adsorbent part.

  FIG. 7D schematically shows a hollow fiber membrane case 70B having finger contact portions 85 including contact portions 86, 87, 88 separated from each other at intervals of 120 ° about the axis AX1. In FIG.7 (d), the position of the contact parts 86, 87, 88 is shown with the lattice pattern. Non-slip irregularities 90 are formed on the outer surface 80a of the portion extending from the holding portion 81 to the abutting portions 86, 87, 88. Even when the water purification cartridge 20 having the hollow fiber membrane case 70B is attached to the water discharge head 10, the outer fitting portion 80 is applied by placing a finger on at least part of the non-slip unevenness 90 extending from the holding portion 81 to the abutting portions 86, 87, 88. And the water purification cartridge 20 may be pushed into the water discharger 11 from the outlet 75 in the downstream direction D1. Since the plurality of abutting portions 86, 87, 88 extend from the holding portion 81 toward the adsorbent portion 30, the adsorbent portion 30 can be gripped from the holding portion 81 to the finger abutting portion 85 without touching. Therefore, also in this modification, the water purification cartridge can be attached to and detached from the water discharging device without touching the adsorbent portion.

FIG. 8A shows a hollow fiber membrane case 70 </ b> C in which the abutting portions 86 and 87 extend from the holding portion 81 toward the adsorbent portion 30, although there is no slip prevention unevenness. When the water purification cartridge 20 having the hollow fiber membrane case 70C is attached to the water discharge head 10, a finger is applied from the holding portion 81 to the abutting portions 86 and 87 to grasp the outer fitting portion 80, and the water purification cartridge from the outlet 75 to the water discharge portion 11 20 may be pushed in the downflow direction D1. Since the finger contact part 85 extends from the holding part 81 to the adsorbent part 30 side, the finger can be applied from the holding part 81 to the finger contact part 85 without touching the adsorbent part 30. Therefore, also in this modification, the water purification cartridge can be attached to and detached from the water discharging device without touching the adsorbent portion.
The same effect can be obtained even if the hollow fiber membrane cases 70A and 70B shown in FIGS.

Further, as shown in FIG. 8A, the outer fitting portion 80 of the hollow fiber membrane case 70 </ b> C may be formed with a water passage hole 82 extending from the bases of the abutting portions 86 and 87 to the holding portion 81. The tap water existing outside the water purification cartridge 20 enters the inner side 33 of the outer nonwoven fabric 31 from the outer side surface 32 of the adsorbent part 30 through each hole 82. In this modification, the water purification cartridge can be attached to and detached from the water discharging device without touching the adsorbent part, and the water flow area on the outer side surface of the adsorbent part can be increased.
In addition, the hole for water passage may be formed only in the finger pad without being formed in the holding part, other than being formed in a part extending from the holding part to the finger pad on the outer surface of the hollow fiber membrane case. Alternatively, it may be formed only on the holding part, not on the finger pad.
Further, as shown in FIG. 8 (a), it is possible to form an anti-slip unevenness 90 on the outer fitting portion 80 in which the hole 82 is formed.

FIG. 8B shows a hollow fiber membrane case 70D in which unevenness 90 for preventing slip is formed on the outer side surface 80a of the outer fitting portion 80, although there is no finger rest portion 85 partially extending from the holding portion 81. Show. In FIG. 8B, a portion surrounded by a two-dot chain line shows an outer fitting portion 80 including the first abutting portion 86 and the vicinity thereof viewed from a direction orthogonal to the axis AX1. When attaching the water purification cartridge 20 having the hollow fiber membrane case 70D to the water discharge head 10, if the finger is placed on the unevenness 90 and the outer fitting portion 80 is gripped, and the water purification cartridge 20 is pushed into the water discharge portion 11 from the outlet 75 in the flow-down direction D1. Good. Since the unevenness 90 for preventing slip is formed on the outer surface 80a of the outer fitting portion 80, the position where the finger is applied is easy to see, and the outer fitting portion 80 can be attached without touching the adsorbent portion 30 by applying the finger to the unevenness 90. I can grab it. Therefore, also in this modification, the water purification cartridge can be attached to and detached from the water discharging device without touching the adsorbent portion.
Even if the hollow fiber membrane cases 70A and 70B shown in FIGS. 7B to 7D do not have the finger contact portion 85, the same effect can be obtained.

(4) Conclusion:
As described above, according to the present invention, techniques such as a water purification cartridge and a faucet that can be attached to and detached from the water discharging device without touching the adsorbent portion can be provided according to various aspects. 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 ... 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 ... Internal fitting member, 50b ... Downstream edge, 51 ... Outer surface, 51c ... Swelling part, 53 ... Inside,
70, 70A-70D ... 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 ... Outer fitting part, 80a ... Outer surface, 81 ... Holding part, 82 ... Hole,
85: finger rest, 86, 87, 88 ... rest, 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 (7)

A water purification cartridge in which the adsorbent and the hollow fiber membrane bundle are arranged in the water flow direction, and is detachable from the water discharge device,
An adsorbent part having an outer surface through which water flows and containing the adsorbent;
The hollow fiber membrane bundle housing part, the holding part for holding the end part in the flow-down direction of the adsorbent part, and the adsorbent part side partially from the holding part outside the outer surface of the adsorbent part A water purification cartridge comprising a hollow fiber membrane case having a finger pad extending to the surface.   The water purification cartridge according to claim 1, wherein the finger pad includes first and second pad parts that are opposite to each other with the adsorbent part interposed therebetween.   The said finger | toe contact part contains the 1st and 2nd contact part extended from the said holding | maintenance part to the said adsorbent part side mutually spaced apart in the outer side of the outer side of the said adsorbent part. 2. The water purification cartridge according to 2. The holding portion holds an end portion in the flow-down direction of the adsorbent portion outside the outer surface of the adsorbent portion,
The water purification cartridge according to any one of claims 1 to 3, wherein unevenness for preventing slip is formed on an outer surface of the hollow fiber membrane case in a portion extending from the holding part to the finger pad part. . A water purification cartridge in which the adsorbent and the hollow fiber membrane bundle are arranged in the water flow direction, and is detachable from the water discharge device,
An adsorbent part having an outer surface through which water flows and containing the adsorbent;
A hollow fiber membrane case having a housing portion for the hollow fiber membrane bundle, and an outer fitting portion for holding an end portion in the flow-down direction of the adsorbent portion outside the outer surface of the adsorbent portion,
A water purification cartridge in which unevenness for preventing slip is formed on an outer surface of the outer fitting portion. A water discharge device;
An adsorbent and a hollow fiber membrane bundle are arranged in the water flow direction, and includes a water purification cartridge that can be attached to and detached from the water discharge device,
The water purification cartridge is
An adsorbent part having an outer surface through which water flows and containing the adsorbent;
The hollow fiber membrane bundle housing part, the holding part for holding the end part in the flow-down direction of the adsorbent part, and the adsorbent part side partially from the holding part outside the outer surface of the adsorbent part A water faucet comprising a hollow fiber membrane case having a finger pad extending to the surface. A water discharge device;
An adsorbent and a hollow fiber membrane bundle are arranged in the water flow direction, and includes a water purification cartridge that can be attached to and detached from the water discharge device,
The water purification cartridge is
An adsorbent part having an outer surface through which water flows and containing the adsorbent;
A hollow fiber membrane case having a housing part for the hollow fiber membrane bundle and an outer fitting part for holding an end part in the flow-down direction of the adsorbent part outside the outer surface of the adsorbent part;
A water faucet in which unevenness for preventing slip is formed on an outer surface of the outer fitting portion.

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