JP5430058B2 - Water purification cartridge and water purifier - Google Patents

Description

  The present invention relates to a water purification cartridge and a water purifier, and more particularly to a water purifier of a type attached to a domestic tap faucet and a water purification cartridge used therefor.

Conventionally, a so-called faucet-direct water purifier that is directly attached to a tap is known. This type of water purifier is generally composed of a main body provided with a switching mechanism for switching the type of water to be discharged, that is, raw water / purified water, and a water purification cartridge configured to accommodate a filter medium and be exchangeable. Further, some water purification cartridges are configured such that a filter medium is accommodated in a cylindrical case and then an opening is closed with a lid (see, for example, Patent Document 1).
Japanese Patent No. 3775027

However, the above-described water purifier has a structure in which the outer peripheral surface of the case and the inner peripheral surface of the lid are bonded with an adhesive by covering the opening end of the case of the water purification cartridge with a substantially cup-shaped lid. There exists a subject that the dimension by the side of an opening end becomes large and a water purifier will enlarge.
In the conventional water purification cartridge, the raw water flowing into the case flows toward one end of the case through the water passage formed outside the filter medium, and then flows from the filter medium inlet on one end side to the filter medium outlet. It is configured so as to be purified. In order to reduce the size of the water purification cartridge, for example, when the cross-sectional area of the water passage in the case is reduced, the deviation of the water flow becomes more significant than when the cross-sectional area of the passage is large, and only a specific portion of the filter medium is concentrated. May be burdensome.

  Therefore, the present invention provides a water purification cartridge and a water purifier that can be miniaturized while suppressing unevenness of water flow in the cartridge.

In order to solve the above problems, the water purification cartridge described in claim 1 includes a filter medium (for example, activated carbon 56 and hollow fiber membrane 57 in the embodiment) in a case (for example, the case 44 in the embodiment). Filtration unit (for example, the filtration unit 43 in the embodiment), a case body (for example, the case 13 in the embodiment) that accommodates the filtration unit, and an opening (for example, an opening in the embodiment) of the case body Part 40) is a water purification cartridge provided with a lid (for example, the lid 13b in the embodiment) that is mounted on the inner side of the opening 40, and the lid prevents an uneven flow of water on its inner surface. nonuniform flow suppression means (e.g., a rib 61 in the embodiment) wherein the nonuniform flow suppression means including an outer edge rib provided intermittently along the lid Characterized in that the drift suppressing means of the lid are disposed facing the inlet of the filtration unit.

  The water purification cartridge described in claim 2 is characterized in that the lid body includes a main plate portion that curves outward.

The water purification cartridge described in claim 3 is characterized in that the drift suppression means includes ribs (for example, radial ribs 62 in the embodiment ) provided radially from the center of the lid.

  The water purification cartridge according to claim 4, wherein the drift suppression means includes ribs provided radially from the center, and the ribs provided radially from the center are substantially equal in angle between two adjacent ones. The water purification cartridge according to claim 3, wherein the water purification cartridge is provided at an equal angle.

  A water purifier according to claim 5 is a water purifier main body having a switching mechanism (for example, the switching valve 23 in the embodiment) for switching the water purification cartridge according to any one of claims 1 to 4. For example, the main body 3) in the embodiment is detachably provided.

  The water purifier according to claim 6 is provided with a male connector portion (for example, male connectors 14a, 14b, 14c in the embodiment) on one of the outer wall of the case main body and the water purifier main body, and on the other. A female connector portion (for example, female connectors 12a, 12b, 12c in the embodiment) to be inserted and fitted therein is provided, and the water purifier body and the water purifier are obtained by fitting the male connector portion and the female connector portion. A water passage (for example, a water purification passage 26 and a raw water introduction passage 27 in the embodiment) between the cartridge and the cartridge is formed, and the water purification cartridge is supported by the water purifier body.

  The water purifier described in claim 7 includes two or more pairs of male connector portions and female connector portions of the plurality of pairs of male connector portions and female connectors, wherein the water purifier body and the water purification cartridge are And at least one of the water passages is a water passage for introducing raw water into the water purification cartridge, and at least one other water passage is for purified water purified by the cartridge. It is a water passage for introduction.

According to the first aspect of the present invention, the size of the peripheral edge of the opening of the case main body can be reduced by mounting the lid inside the opening of the case main body. There is an effect that can.
Moreover, since the water can be introduced from the inlet of the filtration unit after the deviation of the flow of water introduced into the case body is suppressed by the drift suppression means, the deviation of the water flow on the inlet side of the filtration unit is suppressed. Therefore, there is an effect that the burden of the filter medium accommodated in the filtration unit can be reduced.

  According to the invention described in claim 2, when the water introduced into the case main body collides with the lid body, the angle of the collision is moderated by the amount of the curvature of the main plate portion, so that the pressure resistance performance is improved. Therefore, there is an effect that it is possible to prevent the lid from becoming large in order to ensure strength.

According to the invention described in claim 3, the water impinging on the inner surface of the lid, the intermittently provided the Li blanking along the outer edge of the rib and lid body provided radially constituting the drift suppressing means By causing the water to collide, the water can be evenly distributed throughout the inside of the lid, and therefore, there is an effect that it is possible to suppress the deviation of the water flow such that the water flow is concentrated in one place with a simple structure.
Moreover, since the strength of the main plate portion of the lid can be improved by providing the ribs provided radially on the lid and the ribs intermittently provided along the outer edge of the lid, sufficient strength is provided. There is an effect that the main plate portion can be made thinner while further ensuring the size of the water purification cartridge.

  According to the invention described in claim 4, the drift suppression means includes ribs provided radially from the center, and the angles formed by the two adjacent ribs are both set to substantially equal angles. There is an effect that can further suppress the bias of the water flow.

  According to the invention described in claim 5, there is an effect that the water purifier can be downsized without degrading the purification performance.

  According to the sixth aspect of the present invention, the male connector portion and the female connector portion provided for coupling the water purifier main body and the cartridge each constitute a water passage, whereby a conventional water purifier is provided. Thus, the water purifier body and the cartridge can be arranged closer to each other than the case where the coupling means and the passage are separately provided as in the case of the above, so that the space for arranging the coupling means can be omitted. There is an effect that the water purifier can be reduced in size by reducing the length of the water purifier.

  According to the invention described in claim 7, at least one pair of the two or more pairs of male connector portions and female connector portions is configured with a water passage for introducing raw water from the main body to the cartridge, and at least another pair. In addition, since the water passage for introducing the purified water purified by the cartridge into the main body is configured, for example, when the purified water outlet for allowing the purified water to flow out is provided on the main body side, the cartridge and the main body Even if a plurality of water passages must be formed between them, the water purifier can be reduced in size because it can be handled without providing the coupling means separately.

Embodiments of the present invention will be described below with reference to the drawings.
1 and 2, reference numeral 1 denotes a water purifier. The water purifier 1 includes a main body 3 attached to an arm 2a of a tap faucet 2 and a substantially cylindrical water purification cartridge 4 provided detachably on the rear surface of the main body 3. In this embodiment, the water purifier 1 is attached to the arm 2a of the tap faucet 2 as shown in FIG. 1, and the front of the tap faucet 2, that is, the extension line of the arm 2a is stood. The front-rear direction viewed from the user is referred to as the front-rear direction of the water purifier, and the left-right direction viewed from the user in the above state is referred to as the left-right direction of the water purifier.

  The main body 3 is provided with a raw water inlet 5 at the top, and is connected to the arm 2 a of the tap faucet 2 via a ring-shaped mounting jig 6 provided at the periphery of the raw water inlet 5. A shower outlet 7 (see FIG. 5) for discharging raw water and a purified water outlet 8 (see FIG. 4) for discharging purified water are arranged at the lower part of the main body 3.

  An operation lever 9 that is long in the left-right width direction of the main body 3 is attached to the front surface of the main body 3. The operation lever 9 selects the type of water discharged from the water purifier 1, that is, raw water or purified water. The central portion in the left-right width direction is pivotally supported by the main body 3, and the left end portion 9a and the right end portion 9b are respectively front and rear. It can swing in the direction.

  The central portion 9 c of the operation lever 9 has a shape curved rearward along the shape of the periphery of the raw water receiving port 5. On the other hand, left and right end portions 9 a and 9 b provided on the left and right sides of the central portion 9 c are formed wider in the vertical direction than the central portion 9 c and extend along the left and right direction of the water purifier 1. A shower mark 10 is formed on the front surface of the right end portion 9b, and a water purification mark 11 is formed on the front surface of the left end portion 9a. As described above, the central portion 9c of the operation lever 9 is formed to be slightly curved toward the rear, thereby suppressing the protrusion of the operation lever 9 to the front and the size in the width direction from increasing. .

  As shown in FIG. 3, substantially cylindrical female connectors 12 a, 12 b, and 12 c that open toward the rear are formed on the back surface of the main body 3. These female connectors 12a, 12b, and 12c are arranged substantially along the left-right width direction of the main body. More specifically, the female connector 12a is disposed on the left side (right side in FIG. 3) of the main body 3, the female connector 12b is disposed on the center of the left and right sides of the main body 3, and the right side of the main body 3 (left side in FIG. 3). Is provided with a female connector 12c. The female connector 12a and the female connector 12c are respectively disposed in left-right symmetrical positions with respect to the female connector 12b, and the female connector 12b is disposed slightly above the female connectors 12a and 12c.

  On the other hand, the cartridge 4 includes a substantially cylindrical case 13. On the outer peripheral wall of the case 13, substantially cylindrical male connectors 14a, 14b, 14c are formed at positions corresponding to the female connectors 12a, 12b, 12c described above. The male connector 14b is disposed at a central position in the axial direction of the cartridge 4 formed in a substantially cylindrical shape, and the male connector 14a and the male connector 14c are disposed at symmetrical positions with respect to the male connector 14b. ing.

  Here, the male connector 14a is paired with the female connector 12a described above, and the male connector 14b is paired with the female connector 12b. The male connector 14c is paired with the female connector 12c. The female connector 12a and the male connector 14a described above constitute a water purification passage 26 that is a water purification passage between the cartridge 4 and the main body 3, and the female connector 12b and the male connector 14b are provided between the cartridge 4 and the main body 3. The raw water introduction passage 27 which is a passage for the raw water is configured.

  A double O-ring 15 is mounted around the male connector 14a, and only one O-ring 15 is mounted around the male connector 14b. The O-ring 15 is not attached around the male connector 14c. Only one O-ring 15 may be provided around the male connector 14a, or the O-ring 15 may be provided around the male connector 14c.

  With this configuration, when the male connector 14a is inserted into the female connector 12a, the male connector 14b is inserted into the female connector 12b, and the male connector 14c is inserted into the female connector 12c and pushed in, the female connector 12a, The male connectors 14a, 14b fitted with the male connectors 14a, 14b, 14c and the O-ring 15 are respectively sealed with the O-ring 15 so that the male connectors 14a, 14b are inserted and removed. Displacement is restricted, and the cartridge 4 is supported by the main body 3 through the male connectors 14a, 14b, 14c and the female connectors 12a, 12b, 12c.

  Locking pieces 16 projecting toward the main body 3 are formed between the male connector 14a and the male connector 14b and between the male connector 14b and the male connector 14c of the cartridge 4. Each of the locking pieces 16 is formed with a screw hole 17. On the other hand, between the female connector 12a and the female connector 12b of the main body 3 and between the female connector 12b and the female connector 12c, positions corresponding to the screw holes 17 of the locking pieces 16 of the bottom wall 18 of the main body 3 are provided. In addition, a loose insertion hole 19 is formed.

  As shown in FIG. 4, with the cartridge 4 mounted on the main body 3, a screw 20 is inserted from below through the loose insertion hole 19 and screwed into the screw hole 17 of the locking piece 16. The bottom wall 18 and the locking piece 16 are fixed, and the movement of the cartridge 4 in the direction away from the main body 3 is restricted. Although the case where the bottom wall 18 of the main body 3 and the locking piece 16 of the cartridge 4 are fixed with the screw 20 has been described, the locking piece is not fixed with the screw 20 but, for example, using a claw or the like. You may make it engage with. Note that the above-described locking piece 16 is provided only for restricting displacement in the direction in which the cartridge 4 is detached from the main body 3, and is not for supporting the cartridge 4.

  As shown in FIGS. 3 and 5, the cartridge 4 attached to the main body 3 has a central axis s disposed at substantially the same height as the bottom wall 18 of the main body 3. The male connectors 14 a, 14 b, and 14 c described above extend from the rear of the water purifier 1 to the front above the central axis s of the cartridge 4 while being attached to the main body 3.

  On the other hand, the back surface of the main body 3 is provided with a concave portion 38 formed in a shape corresponding to the peripheral surface of the cartridge 4, that is, in a substantially arc shape in a side view that is concave toward the front surface side of the main body 3. Thus, when the cartridge 4 is mounted on the main body 3, the outer peripheral wall of the cartridge 4 comes into contact with the concave portion 38, and the front portion of the cartridge 4 slightly enters the main body 3 side.

  In addition, the rear upper edge portion of the main body 3 extends rearward while abutting along the peripheral surface of the cartridge 4 to form a collar portion 21. The collar portion 21 is formed in a convex shape extending rearward toward the center in the left-right width direction of the main body 3 (see FIG. 2). By providing the collar portion 21, when the cartridge 4 is mounted on the main body 3, the cartridge 4 can be guided to the concave portion 38 of the main body 3 in a correct posture, and both end portions of the mounted cartridge 4 are vertically moved. Displacement in the direction can be restricted. The upper edge portion 22 of the female connectors 12a, 12b, and 12c is stepped, and only the stepped upper edge portion 22 is in contact with the peripheral surface of the cartridge 4 in the same manner as the collar portion 21 described above. Further, it extends rearward as it goes above the upper edge portion 22 (see FIG. 3).

  As shown in FIG. 5, the raw water receiving port 5 of the main body 3 is provided with a rubber packing 24 as a sealing material between the raw water receiving port 5 and the tap faucet 2 while being connected to the tap faucet 2. ing. Further, a resin partition plate 25 having an opening (not shown) formed in the center portion is disposed below the rubber packing 24. The partition plate 25 is placed on a plurality of ribs (not shown) formed on the inner wall of the main body 3 along the vertical direction.

  Below the partition plate 25, the switching valve 23 linked to the operation lever 9 described above is housed so as to be swingable in the left-right direction (the front and back direction in FIG. 3). The switching valve 23 switches the communication state between the raw water inlet 5 and the raw water introduction passage 27 described above, and the communication state between the raw water reception port 5 and the raw water passage 28 that guides the raw water to the shower outlet 7.

  More specifically, a switching valve holder 29 is disposed inside the main body 3 on the operation lever 9 side, and the switching valve 23 has a rotating shaft 30 supported by the switching valve holder 29 so as to be rotatable. The rotating shaft 30 is fixed to the rotating shaft of the operation lever 9 described above while sharing the axis. An O-ring 33 is mounted as a seal material around the rotary shaft 30 accommodated in the switching valve holder 29.

  The switching valve 23 includes an arm 31 extending rearward from the upper portion of the rotary shaft 30, and a substantially bottomed cylindrical valve body holder 32 that opens downward is provided at an end of the arm 31. Is formed. The valve body holder 32 supports the valve body 35 so as to be slidable in the vertical direction. A coil spring 34 is accommodated in the valve body 32, and the valve body 35 is urged downward by the coil spring 34. Yes.

  An opening (not shown) of the raw water introduction passage 27 and the raw water passage 28 is disposed below the valve body 35, and the arm 31 swings between the opening and the valve body 35 along the swinging direction. A long rubber valve seat packing 36 is provided. In the valve seat packing 36, holes (not shown) corresponding to the shapes of the openings of the raw water introduction passage 27 and the raw water passage 28 are arranged side by side along the left-right width direction of the main body 3.

  That is, when the right end portion 9b of the operation lever 9 provided with the shower mark 10 is pushed rearward by the user, the rotation shaft of the operation lever 9 rotates counterclockwise, and the switching valve is associated with this rotation. The rotating shaft 30 of 23 rotates and the arm 31 swings leftward. Then, the valve seat packing 36 around the periphery of the opening of the raw water introduction passage 27 is pressed by the valve body 35 from above, and the opening of the raw water introduction passage 27 is closed. As a result, the opening of the raw water passage 28 is opened, and the raw water received from the raw water receiving port 5 is discharged downward from the shower outlet 7 through the raw water passage 28.

  On the other hand, when the left end portion 9a of the operation lever 9 provided with the water purification mark 11 is pushed rearward by the user, the rotation shaft of the operation lever 9 rotates clockwise, and the switching valve 23 is rotated with this rotation. The rotation shaft 30 rotates and the arm 31 swings in the right direction. Then, the valve seat packing 36 at the periphery of the opening of the raw water passage 28 is pressed from above by the valve body 35, and the opening of the raw water passage 28 is closed. Thereby, the raw water received from the raw water receiving port 5 is introduced into the cartridge 4 through the raw water introduction passage 27, that is, the female connector 12b and the male connector 14b, and then the purified water filtered by the cartridge 4 is purified water passage 26 (FIG. 3). See), that is, return to the main body 3 through the male connector 14a and the female connector 12a, and are discharged downward from the purified water outlet 8 (see FIG. 4).

Next, the cartridge 4 will be described with reference to FIGS. In the cartridge 4, the side into which raw water flows is referred to as an inlet 47, and the side from which purified water flows out is referred to as an outlet 48.
The case 13 of the cartridge 4 is attached to the inside of the substantially bottomed cylindrical case main body 13a having the male connectors 14a, 14b and 14c described above, and the opening 40 of the case main body 13a, and is ultrasonically welded. It is comprised with the cover body 13b fixed to 13a. The inner wall 41 of the case main body 13a is formed with a reduced diameter portion 42 whose inner diameter gradually decreases toward the bottom wall 13c of the case main body 13a in a range between the male connector 14a and the male connector 14c.

  A filtration unit 43 is accommodated inside the case body 13a. The filtration unit 43 includes a substantially cylindrical case 44, and a stepped portion 45 is formed on the outer peripheral surface of the case 44 on the extension line of the raw water introduction passage 27 formed by the male connector 14 b described above. Since the step 45 is arranged on the extension line of the raw water introduction passage 27 of the male connector 14b in this way, the raw water flowing into the case 13 of the cartridge 4 through the raw water introduction passage 27 hits the step 45 and is smooth. In the direction of the entrance 47.

  The filtration unit 43 is formed with a large-diameter portion 49 formed on the outlet 48 side of the step portion 45 and having a larger diameter than the inlet 47 side of the step portion 45. Further, a reduced diameter portion 50 that gradually decreases in diameter toward the outlet 48 side is formed on the outer peripheral surface of the case 44 in the vicinity of the outlet 48. A ring-shaped groove 51 is formed in the vicinity of the reduced diameter portion 50 of the large diameter portion 49, and an O-ring 52 is attached to the groove 51.

  Here, when the filtration unit 43 is slid into the case main body 13a through the opening 40 and the lid 13b is attached to the opening 40 of the case main body 13a, the case 44 of the filtration unit 43 is pushed into the case main body 13a. The O-ring 52 hits the inner peripheral surface of the reduced diameter portion 42 in the vicinity of the male connector 14a, and the displacement of the filtration unit 43 in the direction of the inlet 47 is restricted. The internal space of the case body 13 a is partitioned by an O-ring 52, a passage T <b> 1 is formed on the inlet 47 side of the raw water from the O-ring 52, and purified water is supplied to the outlet 48 side of the O-ring 52. A passage T2 for flowing toward the purified water passage 26 is formed.

  In the case 44 of the filtration unit 43, activated carbon 56 as an adsorbent and a hollow fiber membrane 57 as a filtration membrane are arranged in series along the longitudinal direction of the cartridge 4. Here, the male connector 14 b described above is disposed on the outer peripheral wall of the case body 13 a on the side where the activated carbon 56 is accommodated with respect to the O ring 52 attached to the case 44, and the male connector 14 a is more than the O ring 52. It arrange | positions at the outer peripheral wall of the case main body 13a by the side in which the hollow fiber membrane 57 is accommodated. The activated carbon 56 may be appropriately used from granular activated carbon, fibrous activated carbon, molded activated carbon, and the like.

  The internal configuration of the filtration unit 43 will be described more specifically. On the inner peripheral surface of the case 44 of the filtration unit 43, a step 53 is formed slightly closer to the inlet 47 than the step portion 45 formed on the outer peripheral surface of the case 44 described above, and inside the case 44 near the step 53. A rectifying plate 54 having a plurality of holes 54a having substantially the same outer shape as the inner diameter of the step 53 near the inlet 47 side is inserted. The holes 54a allow the water to flow through the inside of the case 44 from the inlet 47 side to the outlet 48 side while adjusting the flow of water from the activated carbon 56 toward the hollow fiber membrane 57 to prevent uneven water flow. It has a function to do. A resin medium filter F is attached to the hole 54a.

  The inner peripheral surface of the case 44 on the inlet 47 side with respect to the step 53 is formed to have a diameter larger than that on the outlet 48 side, and the diameter is gradually reduced from the inlet 47 toward the step 53 to be tapered. 53a is formed. Here, the step 53 has a function of a stopper of the rectifying plate 54 and restricts displacement of the rectifying plate 54 in the direction of the outlet 48.

  On the other hand, the hollow fiber membrane 57 accommodated on the outlet 48 side of the rectifying plate 54 is potted with urethane resin, epoxy resin, polyolefin resin or the like at a position corresponding to the reduced diameter portion 50 formed on the outer peripheral surface of the case 44. The material 58 blocks the raw water side and the purified water side of the membrane. Further, a substantially disc-shaped non-woven fabric 55 is attached as a prefilter on the most entrance 47 side in the case 44.

  The lid body 13 b includes a main plate portion 60 formed in a substantially disc shape, and the main plate portion 60 is curved and formed in a substantially arc shape in cross section toward the outside of the water purification cartridge 4. Further, a ring-shaped projecting portion 60 a that projects toward the inside of the case main body 13 a is formed on the outer peripheral edge of the main plate portion 60.

On the inner surface of the main plate portion 60, there is provided a drift suppressing means for suppressing the bias of the flow of raw water that has flowed into the case main body 13a. The drift current suppressing means can be appropriately selected according to the shape of the water purification cartridge from the structures such as ribs, grooves and protrusions provided on the inner surface side of the main plate portion 60 and combinations thereof.
An embodiment of this drift suppression means will be specifically described with reference to FIGS. As shown in FIGS. 8 and 9, a plurality of ribs 61 are formed on the inner surface of the main plate portion 60 of the lid body 13 b as drift suppressing means. These ribs 61 are radial ribs 62 formed radially from the center of the main plate portion 60, respectively, and circumferential directions formed along the outer edges of the main plate portion 60, that is, along the circumferential direction, arranged at the ends of the radial ribs 62. The rib 63 is comprised.

  Further, a protrusion 64 that protrudes to the inner surface side of the main plate portion 60 is provided on an extension line of each circumferential rib 63 and at a central position between the circumferential ribs 63. Further, the radial rib 62 has a shape in which a corner portion on the center side is cut obliquely. The protrusion 64 may be omitted depending on the shape of the cartridge.

  The lid 13b is fitted inside the opening 40 of the case body 13a, and the outer peripheral surface of the lid 13b is fixed to the inner peripheral surface of the opening 40 by the above-described ultrasonic welding or fitting. In a state where the lid body 13b is fixed to the case body 13a, a circumferential rib 63 formed on the inner surface of the lid body 13b presses the inlet side end face of the case 44 of the filtration unit 43 accommodated in the case body 13a; (See FIG. 6). Accordingly, the radial rib 62 and the circumferential rib 63 are disposed adjacent to the inlet 47 side of the filtration unit 43. Therefore, it is preferable to employ a configuration including the above-described rib as the drift suppression unit. Note that the number and angle of the radial ribs 62 and the circumferential ribs 63 are not limited to those described above, and may be set as appropriate. However, the two adjacent radial ribs 62 have substantially equal angles. It is particularly preferable from the viewpoint of drift current suppression.

  Here, in the lid body 13b shown in FIGS. 8 and 9, radial ribs 62 are arranged at four positions at intervals of about 90 °, respectively, from the center of the main plate 60 to the vicinity of the outer periphery. On the other hand, the circumferential rib 63 is formed in an arc shape over a range of about 45 ° centering on the radially outer end of the radial rib 62, and the interval between the adjacent radial ribs 62 is about 45 °. Is set. In addition, the space | interval with the adjacent radial direction rib 62 is not restricted to 45 degrees, Even if it is about 40 degrees-50 degrees, there exists an equivalent effect.

  That is, the raw water flowing into the water purifier 1 from the tap tap 2 flows into the water purifier 1 from the raw water receiving port 5 and is then introduced into the raw water that is not blocked by the switching valve 23 according to the operation state of the operation lever 9. It flows into the passage 27 or the raw water passage 28. When raw water flows into the raw water passage 28, the raw water is guided to the shower outlet 7 as it is and flows out from the shower outlet 7 to the outside of the water purifier 1 as shower-like raw water.

  On the other hand, when raw water flows into the raw water introduction passage 27, the raw water flows into the case 13 of the cartridge 4 through the female connector 12 b and the male connector 14 b constituting the raw water introduction passage 27. And as shown in FIG. 6, raw | natural water flows through the channel | path T1 formed between the inner wall 41 of the case main body 13a, and the outer wall of the filtration unit 43 toward the inlet 47 side of the filtration unit 43, and a cover body It hits the inner surface of 13b.

  This raw water wraps around the entire circumference of the lid body 13b through a passage 65 defined by the protruding portion 60a on the peripheral edge of the lid body 13b, the circumferential rib 63, the end face of the filtration unit 43, and the main plate portion 60. Then, the raw water that has come in enters from the circumferential rib 63 and the protrusion 64 toward the center of the lid body 13b (in the direction indicated by the two-dot chain line arrow in FIG. 8), and then the radial rib. Collide with 62. The raw water that has entered the center of the lid 13b and collided with the radial ribs 62 is separated from the four regions R surrounded by the adjacent radial ribs 62 and the circumferential ribs 63, respectively. It penetrates into the inside of the case 44 through the non-woven fabric 55. The raw water also slightly enters the case 44 through the nonwoven fabric 55 when flowing through the passage 65.

  The raw water entering the case 44 is sequentially adsorbed and filtered by the activated carbon 56 and the hollow fiber membrane 57, and then flows out from the outlet 48 side of the filtration unit 43 as purified water. The purified water flowing out from the filtration unit 43 flows into the main body 2 via the passage T2 formed on the outlet 48 side of the O-ring 52 inside the case 13 and the purified water passage 26, and flows down from the purified water outlet 8. Become.

Therefore, according to embodiment mentioned above, since the cover 13b is attached and fixed inside the opening part 40 of the case 13, since the dimension of the opening part 40 periphery of the case 13 can be made small, water purification The cartridge 4 can be downsized.
Moreover, since the deviation of the water flow generated in the raw water introduced into the case 13 is suppressed by the rib 61, the raw water can be flowed into the case 44 from the inlet 47 of the filtration unit 43, and thus the case 44 flows through. The bias of the water flow can be suppressed, and as a result, the burden of the filter medium accommodated in the case 44, particularly the activated carbon 56, can be reduced.

  Furthermore, since the end surface on the inlet 47 side of the case 44 can be pressed by the circumferential rib 63 that constitutes the rib 61, the thickness of the lid 13b can be made larger than when the protrusions that press the filtration unit 43 are provided individually. As a result, the water purification cartridge 4 can be further miniaturized.

  Since the main plate portion 60 is formed to be curved outward, when the raw water collides with the lid body 13b, the collision angle can be set gently, so that the pressure resistance performance is improved. As a result, it is possible to prevent the lid 13b from becoming large in order to ensure strength.

  Further, the raw water that hits the main plate portion 60 of the lid 13b is at least one of the radial ribs 62 provided radially and the circumferential rib 63 provided intermittently along the outer edge of the lid 13b. Since this can change the direction of the water flow, the bias of the water flow can be suppressed with a simple structure.

  Furthermore, since the strength of the lid 13b can be improved by providing the radial rib 62 and the circumferential rib 63 on the main plate 60 of the lid 13b, the main plate 60 can be made thinner while ensuring sufficient strength. Thus, the water purification cartridge 4 can be further reduced in size.

  And male connector 14a, 14b, 14c provided in order to couple | bond the main body 3 and the water purification cartridge 4 and female connector part 12a, 12b, 12c comprise the purified water path 26 and the raw | natural water introduction path 27, respectively. Thus, the main body 3 of the water purifier and the water purification cartridge 4 are arranged closer to each other than the case where the coupling means and the passage are individually provided as in the conventional water purifier, so that the space for arranging the coupling means can be omitted. As a result, the size of the water purifier 1 can be shortened and further miniaturization can be achieved.

  In the above embodiment, the case where the lid 13b is fixed to the case main body 13a by ultrasonic welding or the like has been described. However, various methods can be adopted as a method for mounting and fixing the lid 13b to the case 13a. For example, a male screw is formed on the outer periphery of the protruding portion of the lid body 13b, and a female screw is formed on the inner circumference in the vicinity of the opening portion 40 of the case body 13a, so that the lid body 13b is formed in the opening portion 40 of the case body 13a. The lid 13b may be fixed to the opening 40 by screwing.

  Further, in the embodiment, the case where the radial rib 62 and the circumferential rib 63 are provided has been described as an example, but either the radial rib 62 or the circumferential rib 63 may be provided. If only the radial ribs 62 are provided, the radial ribs 62 may be pressed against the inlet 47 side of the filtration unit 43.

It is a perspective view of the water purifier in embodiment of this invention. It is the arrow view seen from the A direction of FIG. It is a perspective view of the water purifier of the state which removed the cartridge from the main body in embodiment of this invention. It is a fragmentary sectional view around the locking piece of the cartridge in the embodiment of the present invention. It is sectional drawing which follows the BB line of FIG. It is sectional drawing which follows the CC line of FIG. It is a perspective view of the filtration unit in an embodiment of the invention. It is an inner surface figure of the lid in an embodiment of the invention. It is sectional drawing which follows the DD line | wire of FIG.

Explanation of symbols

3 Main body 4 Water purification cartridge 12a, 12b, 12c Female connector (female connector part)
13a Case body 13b Lid 14a, 14b, 14c Male connector (male connector part)
23 Switching valve (switching mechanism)
26 Water purification passage (water passage)
27 Raw water introduction passage (water passage)
40 Opening 43 Filtration Unit 44 Case 56 Activated Carbon 57 Hollow Fiber Membrane 61 Rib 62 Radial Direction Rib 63 Circumferential Rib

Claims (7)

A water purification cartridge comprising a filtration unit provided with a filter medium in a case, a case main body for housing the filtration unit, and a lid for closing the case main body, wherein the lid has a biased water flow on the inner surface thereof. The drift suppression means includes ribs provided intermittently along the outer edge of the lid, and the drift suppression means of the lid faces the inlet of the filtration unit. A water purification cartridge characterized by being made.   The water purification cartridge according to claim 1, wherein the lid includes a main plate portion that curves outward. The drift suppressing unit, water purification cartridge according to claim 1 or 2, characterized in that it comprises a re-Bed provided radially from the center of the lid.   The drift suppression means includes ribs provided radially from the center, and the ribs provided radially from the center are provided such that two adjacent angles are substantially equal. The water purification cartridge according to claim 3.   5. A water purifier, wherein the water purification cartridge according to claim 1 is detachably provided in a water purifier main body having a switching mechanism for switching a water passage.   For each of the outer wall of the case main body and the water purifier main body, a male connector portion is provided on one side, and a female connector portion to be inserted and fitted to the other is provided on the other side, and the male connector portion and the female connector portion are fitted. The water purifier according to claim 5, wherein a water passage between the water purifier main body and the water purifying cartridge is formed, and the water purifying cartridge is supported by the water purifier main body.   Of the multiple pairs of the male connector portion and the female connector, two or more pairs of male connector portions and female connector portions are set as water passages between the water purifier body and the water purification cartridge, and At least one of the water passages is a water passage for introducing raw water into the water purification cartridge, and at least one other water passage is a water passage for introducing purified water purified by the cartridge. The water purifier according to claim 6.

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