JP4423065B2 - Sink and undersink water purifier for sink - Google Patents

Description

  The present invention relates to a sink used in general households and the like, and an undersink type water purifier for a sink.

As an under-sink type water purifier for purification of tap water used in ordinary households, a cylindrical primary filter mainly composed of activated carbon or activated carbon fiber corresponding to the raw water inlet, and a water purification outlet inside this There is a filtration cartridge provided with a secondary filter of a hollow fiber membrane bundle folded in a U-shape. (For example, refer to Patent Document 1).
JP 2002-177950 A

  The filtration cartridge of Patent Document 1 includes a raw water inlet pipe and a purified water outlet pipe holder for preventing the raw water inlet pipe and the purified water outlet pipe connected to the raw water inlet and the purified water outlet, respectively. In the case of installing in the water, the raw water introduction pipe and the purified water outlet pipe are prevented from being caught by stored items such as a pan. However, no special configuration has been applied to improve the inside of the filtration cartridge.

  In the present invention, when a horizontally installed undersink type water purifier is attached to a drawer in a sink used in general households, etc., the storage of the water purification conduit leading from the water purifier to the faucet and the effective use of the lower space of the sink are achieved. It provides a sink that can be used. In addition, when granular activated carbon for water purification is used in the undersink type water purifier attached to the drawer of the sink, even if there is a variation in the filling amount of the granular activated carbon, the granular activated carbon is also biased when used as a horizontal type. The present invention provides an undersink type that can prevent and obtain a uniform purification.

  In the sink according to the first aspect of the invention, the water purification hollow fiber membrane is accommodated in the inner cylinder disposed with an annular interval in the outer cylinder, and the water purification granular activated carbon is accommodated so as to surround the hollow fiber membrane. An undersink type water purifier provided with a raw water inlet communicating with the annular interval at one end side of the outer cylinder and a water purification outlet communicating with the hollow fiber membrane on the same side as the raw water inlet. The water purification outlet is connected in a horizontal state to a drawer disposed in the lower space of the sink, the tap outlet of the sink faucet is connected to the tap water inlet side through a flexible conduit, and the water purifier is located behind the water purifier. A storage space for storing the stretchable portion of the flexible conduit that accompanies withdrawing / withdrawing of the drawer is formed.

  An undersink type water purifier according to a second aspect of the present invention is a water purifying hollow fiber membrane that is housed in an inner cylinder that is arranged with an annular interval in an outer cylinder and surrounds the hollow fiber membrane. Granular activated carbon is stored, and one end of the outer cylinder is provided with a raw water inlet communicating with the annular interval and a purified water outlet communicating with the hollow fiber membrane on the same side as the raw water inlet. An injection opening of the granular activated carbon closed by a cap is formed on the other end side, and an elastic member is provided to hold the granular activated carbon toward the other end side of the annular interval by attaching the cap. It is characterized by.

  Furthermore, in the undersink type water purifier of the third invention, the hollow fiber membrane for water purification is housed in the inner cylinder disposed with an annular interval in the outer cylinder, and the hollow fiber membrane is surrounded so as to surround the hollow fiber membrane. Granular activated carbon for water purification is stored in an annular interval, and a raw water inlet communicating with the annular interval is disposed at one end of the outer cylinder, and a purified water outlet communicating with the hollow fiber membrane is on the same side as the raw water inlet. The other end side opening of the outer cylinder is closed by a cap to form a communication portion that communicates from the granular activated carbon to the hollow fiber membrane. A water-permeable elastic member that holds a pressing force toward the end side is provided.

  Furthermore, in the undersink type water purifier of the fourth invention, a water purification hollow fiber membrane is housed in an inner cylinder arranged with an annular interval in the outer cylinder so as to surround the hollow fiber membrane. Granular activated carbon is accommodated in the annular interval, and a raw water inlet communicating with the annular interval is provided at one end of the outer cylinder, and a water purification outlet communicating with the hollow fiber membrane is provided on the same side as the raw water inlet. The opening on the other end side of the outer cylinder is closed by a cap to form a communicating portion from the granular activated carbon to the hollow fiber membrane, and the granular activated carbon is separated from the cap side of the annular interval from the annular interval. A water-permeable elastic member that holds the pressure toward the other end side is provided, and fibrous activated carbon is annularly disposed around the communication portion between the water-permeable elastic member and the cap. .

  Furthermore, the undersink type water purifier of the fifth invention is provided with a hollow fiber membrane body in which a hollow fiber membrane for water purification is housed in a cylindrical case with an annular interval in the outer cylinder, Granular activated carbon is accommodated in a cylindrical case disposed so as to surround the hollow fiber membrane body with an annular water flow interval between the tube, and one end side of the outer tube communicates with the water flow interval. A raw water inlet and a purified water outlet communicating with the hollow fiber membrane on the same side as the raw water inlet, the other end opening of the outer cylinder is closed by a cap, and both cylindrical cases are cylindrical A water passage portion is formed on the surface, and an elastic member is provided to hold the granular activated carbon by pressing the cap toward the other end side by attaching the cap.

  Furthermore, an undersink type water purifier according to a sixth aspect of the present invention is a hollow fiber in which a hollow fiber membrane for water purification is housed in a cylindrical case with an annular space in the outer cylinder. A membrane body is provided, and one end of the outer cylinder is provided with a raw water inlet communicating with the annular interval, and a purified water outlet communicating with the hollow fiber membrane on the same side as the raw water inlet. The other end side opening is closed by a cap, and a water passage is formed in a part of the inner side of the outer cylinder so that one end communicates with the raw water inlet and passes along the axial direction to the annular interval. A water passage is formed at a position on the opposite side far from the water passage in the cylindrical surface of the cylindrical case, and the granular activated carbon stored in the annular interval is pressed and held toward the other end by attaching the cap. An annular elastic member is provided.

  According to the first aspect of the invention, the flexible conduit portion that expands and contracts as the drawer is drawn out in a loop shape, a coil shape, etc. is disposed in the space behind the drawer below the faucet, so It is possible to effectively use the difficult space, and it does not interfere with the withdrawal of the drawer, nor does it interfere with the storage of the pan etc. stored in the space below the drawer. Can be prevented.

  The amount of granular activated carbon varies depending on the amount of moisture in the air, the measurer, the jig, etc. for each weighing operation. In the second invention, the granular activated carbon is pushed by the elastic member within the annular interval. Even if there is this variation, the granular activated carbon surface is maintained in an unbalanced state due to the collapse of the granular activated carbon surface within the annular interval, and the granular activated carbon surface is uniformly filled within the annular interval. It becomes. For this reason, there exists an effect by which the uniform purification of the tap water which passes the inside of the said cyclic | annular space | interval to an axial direction is acquired.

  The amount of granular activated carbon varies depending on the amount of moisture in the air, the measurer, the jig, etc. for each weighing operation. In the first invention, the granular activated carbon is within the annular interval by the water-permeable elastic member. Therefore, the granular activated carbon surface is uniformly filled by preventing unevenness due to the collapse of the granular activated carbon surface within the annular interval due to the variation. For this reason, it is possible to obtain homogeneous purification of tap water passing in the axial direction in the annular interval and to maintain the water passage in the water purifier. And by making the water-permeable elastic member into a molded body of open-cell urethane foam, it is possible to achieve the effect of suppressing granular activated carbon and the water permeability of tap water at the same time. Easy to assemble.

  According to a fourth aspect of the present invention, the granular activated carbon is pressed and held by a water-permeable elastic member from the annular space near the cap, and even if there is a variation in the amount of granular activated carbon to be packed, the variation is absorbed and the annular activated carbon is absorbed. The granular activated carbon within the interval can be maintained in a state without collapsing or biasing, the uniform filling state of the granular activated carbon surface within the annular interval can be maintained, and the water passage that passes through the annular interval in the axial direction It is possible to obtain homogeneous purification of water and maintain the water passage in the water purifier. The fibrous activated carbon arranged in an annular shape has an effect of serving as a further purification filter and serving as a pressing member for the water-permeable elastic member.

  According to the fifth aspect, since tap water passes from the cylindrical surface of the granular activated carbon layer housed in the cylindrical case and travels toward the hollow fiber membrane body, a wide-area filtering effect is obtained. And by pressing the granular activated carbon to the raw water inlet and the purified water outlet side, the granular activated carbon can be maintained in a state without collapsing or biased, and by the uniform filling state of the granular activated carbon surface within the annular interval, There is an effect of obtaining a uniform purification of tap water in a wide area.

  According to the sixth aspect of the invention, the water that has flowed into the water channel from the raw water inlet side flows into the hollow fiber membrane body from a position on the opposite side far from the water channel, and is thus purified by passing through the granular activated carbon in the circumferential direction. Therefore, there is an effect that the purification passage can be taken longer.

  In the undersink type water purifier of the present invention, granular activated carbon is accommodated in an annular interval so as to surround a hollow fiber membrane accommodated in a cylindrical case, and this granular activated carbon is pressed from one end side toward the other end side. An elastic member that is held within an annular interval is provided to prevent bias due to collapse of the granular activated carbon within the annular interval, and an undersink water purifier according to the present invention and a sink equipped with the same are described below. Describe the form.

  Next, an embodiment of the undersink type water purifier of the present invention will be described with reference to FIG. The basic technology of the undersink type water purifier 1 of the present invention is as follows: an outer cylinder 2 having one end closed 2A and the other end opened 2B, and an inner cylinder 4 disposed in the outer cylinder 2 with an annular interval 6 therebetween. In the inner cylinder 4, a large number of water purification hollow fiber membranes 5 are bundled and stored in a U-shaped bent state, and the granular activated carbon for water purification is disposed at an annular interval 6 so as to surround the hollow fiber membrane 5. 12 is stored. A raw water inlet 7 communicating with the annular interval 6 and a purified water outlet 8 communicating with the hollow fiber membrane 5 are provided on the same side as the raw water inlet 7 on the closed 2A side of the outer cylinder 2. An opening 2 </ b> B for injection of granular activated carbon 12 is formed on the other end side of the outer cylinder 2, and this opening 2 </ b> B is closed by a cap 11. By closing the opening 2 </ b> B with the cap 11, the annular elastic member 20 is pushed and the granular activated carbon 12 is pressed and held from one end side of the annular interval 6 toward the other end side of the annular interval 6. .

  In the embodiment of FIG. 1, the opening 2 </ b> B is closed by the cap 11, whereby the communication portion 10 that leads from the granular activated carbon 12 to the hollow fiber membrane 5 is formed. The annular elastic member 20 that holds and holds the granular activated carbon 12 toward the other end of the interval 6 is the water-permeable elastic member 20, and the water-permeable elastic member 20 passes water but cannot pass the granular activated carbon 12. It is a form in which a small water passage is formed, and it is possible to simultaneously achieve the effect of suppressing the granular activated carbon 12 and the water permeability of tap water by being composed of a molded body of open-cell urethane foam. The water purifier 1 can be easily assembled.

  This will be described more specifically below. The outer cylinder 2 and the inner cylinder (tubular case) 4 have a cylindrical shape made of synthetic resin. The cylindrical case 4 has an opening 4A at one end, and a water passage portion 9 that is open to the communication portion 10 on the peripheral surface of the other end. The hollow fiber membrane body 3 has various configurations. As one of the configurations, a bundle of many hollow fibers is made into a hollow fiber membrane 5, which is bent into a U shape and filled into a cylindrical case 4. As a potting material (sealing material) 23, urethane resin is filled in the gaps between the ends of the hollow fibers. By this filling, the gaps between the ends of the hollow fibers are sealed with the sealing material 23, and the opening 4 </ b> A is closed with the sealing material 23. Thereafter, the end of the sealed portion is cut to expose the hollow surface of the hollow fiber membrane 5. In this way, the hollow fiber membrane body 3 is formed.

  A U-shaped bent portion of the hollow fiber membrane 5 is disposed at an end portion of the hollow fiber membrane body 3 on the cap 11 side of the cylindrical case 4, and the cylindrical case 4 surrounding the U-shaped bent portion of the hollow fiber membrane 5. A water passage portion 9 that opens to the communication portion 10 is formed on the peripheral surface of the end portion. In this way, in the inner cylinder 4, a bundle of a large number of hollow fiber membranes 5 bent in a U shape is accommodated in the inner diameter thereof so that the inner cylinder 4 is formed of the hollow fiber membrane 5. A cylindrical case is formed, and the inner tube 4 and the hollow fiber membrane 5 are integrated to form the hollow fiber membrane body 3.

  The communication part 10 is formed on the inner side covered with the cap 11, and a water-permeable fibrous activated carbon 21 formed in an annular shape is formed around the communication part 10 existing between the water-permeable elastic member 20 and the cap 11. Annular arrangement. The water flow portion 9 is covered with the fibrous activated carbon 21 and purifies the water flowing into the water flow portion 9.

  The granular activated carbon 12 is used to increase the purification surface area, and can be achieved by using granular activated carbon having a size of 8 to 200 mesh, but is purified by the water purifier 1. Depending on the quality of the raw water, it is preferable to employ a type of activated carbon having a function compatible therewith.

  The outer cylinder 2 is integrally formed with a raw water inlet 7 communicating with the interval 6, a purified water outlet 8 communicating with the hollow fiber membrane 5, and a positioning boss 13 on the closed 2 </ b> A side. A screw portion 17 that is screwed with a screw portion 16 formed on the inner surface of the cap 11 is formed on the outer periphery of the opposite end of the opening 2B. On the inner surface of the outer cylinder 2 on the closed 2A side, a circular attachment portion 14 is formed with the purified water outlet 8 as the center.

  Reference numerals 18 and 19 denote water-permeable partitions that partition the granular activated carbon 12 so as not to leak from the raw water inlet 7. The partition 19 is a relatively rigid synthetic resin or the like, and the partition 18 is made of nonwoven fabric or fibrous activated carbon. By configuring, the object can be achieved.

  The assembly of the undersink type water purifier 1 will be described. The hollow fiber membrane body 3 configured as described above is prepared by setting the partition 19 so as to overlap the partition 18 on the upper side of the circular attachment portion 14 so as to cover the downstream side of the raw water inlet 7. Then, the opening 4 </ b> A side of the cylindrical case 4 is fitted and assembled in a watertight state inside the circular mounting portion 14 via the annular sealing material 15, and set in the outer cylinder 2 coaxially with the outer cylinder 2. At this time, the superposed water-permeable partitions 18 and 19 are kept in a state of being suppressed by the annular flange 4 </ b> B of the cylindrical case 4.

  In this state, an annular raw water inflow chamber 22 communicating with the raw water inlet 7 is formed in the outer cylinder 2 below the partitions 18 and 19. In addition, a substantially uniform annular interval 6 is formed between the outer cylinder 2 and the inner cylinder (tubular case) 4. In this state, granular activated carbon 12 measured in the annular interval 6 with the opening 2B of the outer cylinder 2 facing up is injected (flowed) through the funnel or the like from the opening 2B. An annular water-permeable elastic member 20 is placed on the top surface of the injected granular activated carbon 12, and an annular fibrous activated carbon 21 is placed on the water-permeable elastic member 20. In this state, the fibrous activated carbon 21 protrudes upward from the opening 2B end of the outer cylinder 2.

  Then, the cap 11 is placed on the end of the opening 2 </ b> B of the outer cylinder 2, and the cap 11 is attached to the outer cylinder 2 by screwing the screw portion 16 of the cap 11 and the screw portion 17 of the outer cylinder 2. By this attachment, the upper surface of the fibrous activated carbon 21 is pushed by the cap 11, so that the water-permeable elastic member 20 is pushed downward, and the granular activated carbon 12 is pressed into the annular interval 6 from above. Reference numeral 27 denotes an annular sealing material between the cap 11 and the outer cylinder 2.

  In this assembly, even if there is a variation in the amount of granular activated carbon 12 injected into the annular interval 6 for each water purifier 1, the thickness of the water-permeable elastic member 20 is made in advance to a thickness that can absorb this variation. Thus, the variation in the injection amount of the granular activated carbon 12 generated for each water purifier 1 can be absorbed by the change in thickness due to the elasticity of the water-permeable elastic member 20. That is, when the amount of the granular activated carbon 12 injected into the annular interval 6 is slightly large, the water-permeable elastic member 20 is held in a slightly compressed state by attaching the cap 11, and the annular interval 6 When the amount of the granular activated carbon 12 injected into the inside is slightly small, the water-permeable elastic member 20 is held in a slightly weakly compressed state by attaching the cap 11.

  Thus, since the granular activated carbon 12 in the annular space 6 is pressed and held by the elasticity of the water-permeable elastic member 20, the state in which the water purifier 1 is tilted sideways (the central axis P of the water purifier 1 is horizontal). Even when installed in the state), the granular activated carbon 12 within the annular interval 6 can be maintained in a state without collapse or bias, and the uniform filling state of the granular activated carbon 12 surface within the annular interval 6 can be maintained. . For this reason, the tap water which flows in from the raw | natural water inflow port 7 passes the inside of the cyclic | annular space | interval 6 to the axial direction (the direction along the central axis P of the water purifier 1 and the left-right direction of FIG. 1) like the arrow. However, there is an effect that a homogeneous purification of tap water is obtained. Further, the fibrous activated carbon 21 arranged in an annular shape has an effect of serving as a pressing member for the water-permeable elastic member 20 while serving as a further purification filter.

  The tap water flowing in from the raw water inlet 7 flows in the axial direction (in the direction along the central axis of the water purifier 1 and in the left-right direction in FIG. 1) within the annular interval 6 as indicated by the arrow, and is water-permeable elastic. The member 20 and the fibrous activated carbon 21 are sequentially passed through the purification to be purified, flowed into the cylindrical case 4 from the water passage 9, purified by the hollow fiber membrane 5, and taken out of the water purifier 1 from the purified water outlet 8.

  In addition, by attaching the cap 11, the water-permeable elastic member 20 is not pressed and held via the fibrous activated carbon 21, but the water-permeable elastic member 20 is directly pressed by the cap 11 without providing the fibrous activated carbon 21. The structure which hold | maintains pressure may be sufficient.

  Next, Example 2 of the undersink type water purifier of the present invention will be described with reference to FIG. The same function parts or the same name parts as those in FIG. The water purifier 1 is the same as the first embodiment in that the elastic member 20 prevents the bias due to the collapse of the granular activated carbon 12 within the annular interval 6.

  The undersink type water purifier 1 according to the second embodiment includes an outer cylinder 2 that is closed at 2A at one end and an opening 2B at the other end, and an inner cylinder 4 that is disposed in the outer cylinder 2 with an annular interval 6 therebetween. The hollow fiber membrane 5 for water purification is accommodated, and the annular activated carbon 12 is formed between the inner tube 4 so as to surround the hollow fiber membrane 5 in a state where the granular activated carbon 12 for water purification is accommodated in the intermediate cylindrical case 50A. A raw water inlet 7 communicating with the annular interval 6 and a purified water outlet 7 communicating with the hollow fiber membrane 5 on the same side as the raw water inlet 7 are provided at one end of the outer cylinder 2. An inlet opening 2B for the granular activated carbon 12 is formed on the other end side of the tube 2, and this opening 2B is closed by a cap 11, and the granular activated carbon 12 is removed by the cap 11 from one end side of the annular interval 6 to the annular interval 6. An elastic member 20 that holds the pressure toward the other end is provided, and the raw water flow The water flowing from the mouth 7 is running water passages are formed flowing out of the purified water outlet 7 through the hollow fiber membranes 5 from the granular activated carbon 12.

  In order to form this flowing water passage, the outer cylinder 2 and the cylindrical case 50A are combined so that an annular water passage 60 having a substantially uniform thickness is formed between them, and the inner cylinder 4 and the cylindrical case are formed. The case 50A is formed with water-permeable portions 4D and 50B uniformly on substantially the entire circumference of the cylindrical surface, and both the cylindrical cases 4 and 50A are substantially uniformly water-permeable portions 4D and around the entire circumference of the cylindrical surface. 50B is formed. For this reason, the water flowing in from the raw water inlet 7 enters the water passage interval 60 and enters the granular activated carbon 12 from the water passage portion 50B to be purified, and then enters the hollow fiber membrane 5 from the water passage portion 4D for purification. And flows through a path that flows out from the purified water outlet 8.

  The cylindrical case 4 (inner cylinder 4) is in a state where the left end in the axial direction of the cylindrical case 4 in FIG. 2 is closed, and the right end has an opening 4A in a state communicating with the purified water outlet 8 as in the form of FIG. In the same manner as in the first embodiment, the hollow fiber membrane 5 is bent and stored in a U shape inside, and the opening 4A is closed by the sealing material 23. The peripheral wall of the cylindrical case 4 (inner cylinder 4) is covered with water-permeable fibrous activated carbon 80 so that the granular activated carbon 12 does not enter the water-permeable hole 4D.

  The assembly of this undersink type water purifier 1 will be described. The cylindrical case 4A (inner cylinder 4) is brought into a watertight state via the annular sealing material 28 in a state where the cylindrical case 4 (inner cylinder 4) containing the hollow fiber membrane body 3 is in contact with the flange 4C. ) Is fitted and assembled in a coaxial state, and the cylindrical case 50A is set. Moreover, the fibrous activated carbon 80 is attached to the surrounding wall of the cylindrical case 4 (inner cylinder 4) so as to cover the water passage hole 4D. Thereby, an annular interval 6A is formed between the cylindrical case 4 (inner cylinder 4) and the cylindrical case 50A.

  In FIG. 2, this assembled product is inserted from the opening 2 </ b> B of the outer cylinder 2, and the flange portion 4 </ b> C of the cylindrical case 4 is fitted inside the circular mounting portion 14 in a watertight state via the annular sealing material 15. assemble. In this state, one end surface (right side surface in FIG. 2) of the cylindrical case 50A is set so as to cover the upper part of the raw water inlet 7, and communicates with the raw water inlet 7 between the cylindrical case 50A and the raw water inlet 7. An annular raw water inflow chamber 22 is formed. In addition, a substantially uniform annular water passage interval 60 is formed between the outer cylinder 2 and the cylindrical case 50A.

  Then, the granular activated carbon 12 measured in the annular interval 6A with the opening 2B of the outer cylinder 2 facing up is injected (flowed) through the funnel or the like from the opening 2B. Then, the annular elastic member 20 is placed on the upper surface of the injected granular activated carbon 12. In this state, the annular elastic member 20 protrudes slightly upward from the end of the opening 2B.

  Then, the cap 11 is placed on the end of the opening 2 </ b> B of the outer cylinder 2, and the cap 11 is attached to the outer cylinder 2 by screwing the screw portion 16 of the cap 11 and the screw portion 17 of the outer cylinder 2. By this attachment, the elastic member 20 is pushed downward, and the granular activated carbon 12 is pressed from above into the annular interval 6A. Reference numeral 27 denotes an annular sealing material between the cap 11 and the outer cylinder 2.

  In this assembly, even if there is a variation in the amount of granular activated carbon 12 injected into the annular interval 6A for each water purifier 1, the thickness of the elastic member 20 should be made in advance to a thickness that can absorb this variation. Therefore, the variation in the injection amount of the granular activated carbon 12 generated for each water purifier 1 can be absorbed by the change in thickness due to the elasticity of the water-permeable elastic member 20. That is, when the amount of the granular activated carbon 12 injected into the annular interval 6A is slightly large, the elastic member 20 is held in a slightly strongly compressed state by attaching the cap 11, and the annular interval 6A is also included in the annular interval 6A. When the amount of the granular activated carbon 12 to be injected is slightly small, the elastic member 20 is held in a slightly weakly compressed state by attaching the cap 11.

  Thus, since the granular activated carbon 12 in the annular interval 6A is pressed and held by the elasticity of the elastic member 20, the water purifier 1 is placed sideways (the central axis P of the water purifier 1 is installed in a horizontal state). Can be maintained in a state where the granular activated carbon 12 in the annular interval 6A is not collapsed or biased, and a uniform filling state of the surface of the granular activated carbon 12 in the annular interval 6A can be maintained. For this reason, the tap water which flows in from the raw | natural water inflow port 7 flows into the axial direction (direction along the central axis P of the water purifier 1 and the left-right direction of FIG. 1) in the annular space 60 as shown by an arrow. Then, after flowing into the granular activated carbon 12 layer from the water flow part 50B of the cylindrical case 50A and being purified, it flows into the cylindrical case 4 from the water flow part 4D of the cylindrical case 4 while being purified by the fibrous activated carbon 80. And purified by the hollow fiber membrane 5 and taken out from the water purifier 1 through the water purification outlet 8.

  Thus, since tap water passes from the cylindrical surface of the granular activated carbon layer 12 accommodated in the cylindrical case 50A toward the hollow fiber membrane body 5, a filtering effect on a wide surface is obtained. And by pressing the granular activated carbon 12 to the raw water inlet 7 and the purified water outlet 8 side, the granular activated carbon 12 can be maintained in a state without collapsing or biased, and the granular activated carbon 12 is uniformly filled within the annular interval 6. By this, there is an effect that homogeneous purification of tap water can be obtained in the wide area.

  In addition, the magnitude | size of the water flow part 50B of 50 A of cylindrical cases is a magnitude | size which is a grade which the granular activated carbon 12 does not leak, for example, is formed with an elongate slit. Moreover, when the water flow part 50B of the cylindrical case 50A is formed with a large hole, leakage of the granular activated carbon 12 from the water flow part 50B can be prevented by covering the hole with a water-based nonwoven fabric or mesh material. .

  Next, Example 3 of the undersink type water purifier of the present invention will be described with reference to FIG. The same function parts or the same name parts as those in FIG. This water purifier 1 is also similar to the first embodiment in that the elastic member 20 prevents the bias due to the collapse of the granular activated carbon 12 within the annular interval 6. The water purifier 1 includes an outer cylinder 2 having one end closed 2A and an opening 2B on the other end, an inner cylinder 4 arranged in an eccentric state with an annular interval 6 in the outer cylinder 2, and an inner cylinder 4 A large number of water purification hollow fiber membranes 5 are bundled and stored in a U-shaped bent state, and water purification granular activated carbon 12 is stored in an annular interval 6 so as to surround the hollow fiber membrane 5. Yes. A raw water inlet 7 communicating with the annular interval 6 and a purified water outlet 8 communicating with the hollow fiber membrane 5 are provided on the same side as the raw water inlet 7 on the closed 2A side of the outer cylinder 2. The inlet opening 2B of the granular activated carbon 12 is formed on the side, and this opening 2B is closed by the cap 11. An annular elastic member 20 is provided so that the granular activated carbon 12 is pressed and held from one end side of the annular interval 6 toward the other end side of the annular interval 6, and this elastic member 20 is attached to the outer cylinder 2. In this configuration, a pressing force is applied by attaching the cap 11.

  The cylindrical case 4 (inner cylinder 4) is in a state where the left end in the axial direction of the cylindrical case 4 in FIG. 3 is closed, and the right end has an opening 4A in a state communicating with the purified water outlet 8 as in the embodiment of FIG. In the same manner as in the first embodiment, the hollow fiber membrane 5 is bent and stored in a U shape inside, and the opening 4A is closed by the sealing material 23.

  Then, one end communicates with the raw water inlet 7, and the water passage 60A to the interval 6 along the axial direction (the central axis P direction of the water purifier 1 and the left-right direction in FIG. 3) extends to the annular interval 6. A plurality of water-passing portions 4D are formed on a part of the inner side of the tube 2 by a guide plate 90 disposed substantially parallel to the outer tube 2 and on the opposite side of the tubular surface of the tubular case 4 far from the water passage 60A. Are arranged in the axial direction, and an annular elastic member 20 is provided to hold the granular activated carbon 12 accommodated in the annular interval 6 from the cap 11 side toward the other end. In order to guide the water in the water passage 60 </ b> A to the granular activated carbon 12, a plurality of water passage portions 60 </ b> B are formed in the guide plate 90.

  One end of the guide plate 90 is provided with an annular interval 6 partition plate 90A on the raw water inlet 7 side, and a water passage portion 90B is formed at a portion corresponding to the water passage 60A of the partition plate 90A. In addition, the water passage hole 4D is covered so that the granular activated carbon 12 does not enter the water passage hole 4D in the frame 4E formed so as to surround all the water passage portions 4D on the outer surface of the cylindrical case 4 (inner cylinder 4). A water-permeable fibrous activated carbon 80A is attached.

  In such a configuration, the water that flows in from the raw water inlet 7 enters the water passage 60A through the water passage portion 90B of the partition plate 90A, flows into the granular activated carbon 12 from the water passage portion 60B substantially uniformly, and is purified. After that, it wraps around toward the water flow part 4D located on the opposite side of the water flow part 60B, flows into the hollow fiber membrane 5 from the water flow part 4D, is purified, and flows through the path flowing out from the water purification outlet 8.

  The assembly of this undersink type water purifier 1 will be described. The guide plate 90 integral with the partition plate 90A is inserted from the opening 2B of the outer cylinder 2, and the guide plate 90 is placed in the outer cylinder 2 so that the partition plate 90A abuts on the circular mounting portion 14. Assemble and assemble in a watertight state. And the cylindrical case 4 (inner cylinder 4) which accommodated the hollow fiber membrane body 3 and attached fibrous activated carbon 80A was inserted from the opening 2B of the outer cylinder 2, and the inner side of the circular attachment part 14 and partition plate 90A of Each is fitted and assembled in a watertight state via an annular sealing material 15 on the inside. In this state, the partition plate 90 </ b> A is set so as to cover the upper portion of the raw water inlet 7, and an annular raw water inflow chamber 22 communicating with the raw water inlet 7 is formed between the partition plate 90 </ b> A and the raw water inlet 7. Further, an annular water passage interval 60 is formed between the outer cylinder 2 and the cylindrical case 4 (inner cylinder 4).

  And the granular activated carbon 12 measured in the annular space | interval 6 with the opening 2B of the outer cylinder 2 facing up is inject | poured through the funnel etc. from the opening 2B. Then, the annular elastic member 20 is placed on the upper surface of the injected granular activated carbon 12. In this state, the annular elastic member 20 protrudes upward from the end of the opening 2B. The water passing portion 60B is covered with a water permeable nonwoven fabric or mesh material 80B so that the granular activated carbon 12 does not leak from the water passing portion 60B.

  Then, the cap 11 is placed on the end of the opening 2 </ b> B of the outer cylinder 2, and the cap 11 is attached to the outer cylinder 2 by screwing the screw portion 16 of the cap 11 and the screw portion 17 of the outer cylinder 2. By this attachment, the elastic member 20 is pushed downward, and the granular activated carbon 12 is pressed into the annular interval 6 from above. Reference numeral 27 denotes an annular sealing material between the cap 11 and the outer cylinder 2.

  In this assembly, even if there is a variation in the amount of granular activated carbon 12 injected into the annular interval 6 for each water purifier 1, the thickness of the elastic member 20 is made in advance to a thickness that can absorb this variation. Therefore, the variation in the injection amount of the granular activated carbon 12 generated for each water purifier 1 can be absorbed by the change in thickness due to the elasticity of the water-permeable elastic member 20. That is, when the amount of the granular activated carbon 12 injected into the annular interval 6 is slightly large, the elastic member 20 is held in a slightly compressed state by the cap 11 being attached. When the amount of the granular activated carbon 12 to be injected is slightly small, the elastic member 20 is held in a slightly weakly compressed state by attaching the cap 11.

  Thus, since the granular activated carbon 12 in the annular interval 6 is pressed and held by the elasticity of the elastic member 20, the water purifier 1 is tilted sideways (the central axis P of the water purifier 1 is in a horizontal state). Even if it is installed in the installed state), the granular activated carbon 12 in the annular interval 6 can be maintained in a state without collapse or bias, and the uniform filling state of the granular activated carbon 12 surface in the annular interval 6 can be maintained.

  In addition, since the water flowing into the water channel from the raw water inlet side flows into the hollow fiber membrane body from the opposite side far from this water channel, it will be purified by passing through the granular activated carbon in the circumferential direction, There is an effect that the purification passage can be taken longer.

  A configuration in which a pressing member is disposed inside the cap 11 and the elastic member 20 is pressed and held by the elastic member 20 when the cap 11 is attached may be employed.

  Next, the Example of the sink provided with the undersink type water purifier of this invention is described based on FIG. 4, FIG. The same function parts or the same name parts as those in FIG. This water purifier 1 is also similar to the above embodiment in that the elastic member 20 prevents the bias due to the collapse of the granular activated carbon 12 within the annular interval 6. As this water purifier 1, any of the water purifiers 1 described in Examples 1 to 3 can be applied. Such an undersink type water purifier 1 is connected to a faucet 102 that protrudes upward from the sink 101 of the sink 100 via a flexible conduit 105, so that the sink 100 of the sink 100 disposed in the space below the sink 101 is provided. The drawer 106 is stored horizontally. Further, the sink 100 forms a storage space 107 for the flexible conduit 105 behind the water purifier 1 and below the faucet 102.

  The drawer 106 that can be pulled out forward of the sink 100 may be a dedicated drawer for the water purifier 1 or may be a dual-purpose type that houses the water purifier 1 in a part of the drawer for storing kitchenware, for example, at the rear. Although the water purifier 1 is stored in the drawer 106 in the horizontal orientation, the axis P of the water purifier 1 may be in any direction, considering the volume occupied by the water purifier 1 in the drawer 106 and the like. It is preferable to store in a horizontal state in the direction. Further, the storage state of the water purifier 1 in the drawer 106 is preferably such that the raw water inlet 7 and the water outlet 8 are directed rearward from the connection with the flexible conduit 105 and the expansion / contraction operation of the flexible conduit 105. However, the raw water inlet 7 and the purified water outlet 8 may be housed in a state in which the raw water inlet 7 and the purified water outlet 8 are housed in a lateral direction in the left-right direction, or in a slightly oblique lateral state. The present invention encompasses any form.

  The flexible conduit 105 is composed of a flexible tube made of a synthetic resin or rubber having flexibility, and is composed of a raw water introduction tube 105A and a purified water lead-out tube 105B, and both the tubes 105A and 105B are parallel to each other. It is the structure which was arrange | positioned and integrated. One end of the raw water introduction pipe 105A is connected to the raw water pipe 103A distributed from the faucet 102 by the connector 104A, and the other end is connected to the raw water inlet 7 of the water purifier 1 by the connector 104B. One end of the purified water outlet pipe 105B is connected to the purified water inlet 103C of the faucet 102 by a connector 104C, and the other end is connected to the purified water outlet 8 of the water purifier 1 by the connector 104D. In this state, the flexible conduit 105 is turned and the conduit portion 105 </ b> E that is flexibly bent is housed in the storage space 107.

  A tap water pipe 110 is connected to the faucet 102, and it is selected when the tap water is taken out from the rotatable nozzle 102B by switching the switching lever 102A, or when the purified water purified by the water purifier 1 is taken out. It is a possible configuration.

  In FIG. 4, the water purifier 1 is detachably attached to the bottom wall in the drawer 106 by means of attachment bands 108, screws, and the like in a horizontal state in which the raw water inlet 7 and the water outlet 8 face backward. The flexible conduit 105 extending rearward from the water purifier 1 is fastened by a fastener 113 on the rear wall 106A of the drawer 106, climbs over the rear wall 106A of the drawer 106, and enters the rear space 107 of the drawer 106. It extends in a state where it hangs down, turns in this space 107, extends upward, and is connected to the faucet 102.

  In such a configuration, as the drawer 106 is pulled out, the flexible conduit 105 gradually expands as the turned intermediate portion 105A is stretched like 105B, thereby facilitating the drawer 106 to be pulled out. Even when the drawer 106 is fully pulled out, the flexible conduit 105 still leaves a slight slack margin at the intermediate portion as in 105B. Further, as the drawer 106 is pushed in, the intermediate portion 105A of the flexible conduit 105 is returned to the turned state as shown by the solid line in FIG. If comprised in this way, it is not necessary to support the intermediate part 105A of the flexible conduit | pipe 105 with a special support. In order to assist this return, a slight weight can be attached to the intermediate portion 105A.

  The conduit portion 105 </ b> A that bends as the drawer 106 is put in and out is disposed in the space behind the drawer 106, so that the space 107 that is difficult to use behind the drawer 106 can be effectively used. Moreover, since it does not interfere with the storage of a pan or the like stored in the space below the drawer 106, the bent portion 105A of the conduit 105 can be prevented from being damaged. Further, from the viewpoint of effective use of the storage space in the sink 100, the conduit portion 105A that bends as the drawer 106 is taken in and out is disposed in the space behind the drawer 106 immediately below the faucet 102, thereby the rear of the drawer 106. Can be expected to be used more effectively in difficult-to-use spaces.

  The form of FIG. 5 shows a configuration in which the drawer 106 is provided with shelves 106B and 106C in two upper and lower stages, and the water purifier 1 is housed in the uppermost shelf 106C. In this case as well, the functions and effects described in FIGS. 4 and 5 are the same.

  Next, the Example of the sink provided with the undersink type water purifier of this invention is described based on FIG. 6, FIG. The same function parts or the same name parts as those in FIG. 4 and FIG. As this water purifier 1, any of the water purifiers 1 described in Examples 1 to 3 can be applied. Such an undersink type water purifier 1 is connected to a tap water inlet side pipe 103 to a faucet 102 protruding upward from the sink 101 of the sink 100 via a flexible conduit 105 and is located below the sink 101. Is stored horizontally in the drawer 106 of the sink 100 disposed in the side. The sink 100 forms a storage space 107 for the flexible conduit 105 behind the water purifier 1 and below the faucet 102.

  The drawer 106 that can be pulled out forward of the sink 100 may be a dedicated drawer for the water purifier 1 or may be a dual-purpose type that houses the water purifier 1 in a part of the drawer for storing kitchenware, for example, at the rear. Although the water purifier 1 is stored in the drawer 106 in the horizontal state, it is preferably stored in a horizontal state in consideration of the volume occupied by the water purifier 1 in the drawer 106. Further, the storage state of the water purifier 1 in the drawer 106 is preferably such that the raw water inlet 7 and the water outlet 8 are directed rearward from the connection with the flexible conduit 105 and the expansion / contraction operation of the flexible conduit 105. However, the raw water inlet 7 and the purified water outlet 8 may be stored in a horizontal state in the left-right direction, or may be stored in an oblique horizontal direction.

  The flexible conduit 105 is composed of a flexible tube made of a synthetic resin or rubber having flexibility, and is composed of a raw water introduction tube 105A and a purified water lead-out tube 105B, and both the tubes 105A and 105B are parallel to each other. It is the structure which was arrange | positioned and integrated. The raw water introduction pipe 105A has one end connected to a raw water pipe 103A distributed from the faucet 102 by a connector 104A and the other end connected to a conduit 112A connected to the raw water inlet 7 of the water purifier 1 by a connector 104B. It is connected. Further, the purified water outlet pipe 105B has one end connected to the purified water inlet 103C of the faucet 102 by the connector 104C and the other end connected to the conduit 112B connected to the purified water outlet 8 of the water purifier 1 by the connector 104D. Yes.

  The conduit portion 105 </ b> E that flexibly stretches in the middle of the flexible conduit 105 is in a state of being accommodated in the storage space 107. The conduit portion 105E that is flexibly stretchable has a configuration in which a spring material is applied so as to be constantly biased in a coil shape, and this spring material is formed by being embedded in the conduit portion 105E. Either the case or a configuration in which the coiled spring material wound around the outside of the conduit portion 105E is constantly biased in the direction of contraction may be used.

  A tap water pipe 110 is connected to the faucet 102, and it is selected when the tap water is taken out from the rotatable nozzle 102B by switching the switching lever 102A, or when the purified water purified by the water purifier 1 is taken out. It is a possible configuration.

  In the figure, the water purifier 1 is detachably attached to the bottom wall in the drawer 106 with a mounting band 108 and a mounting tool 108 such as a screw in a horizontal state in which the raw water inlet 7 and the purified water outlet 8 face rearward. The conduits 112A and 112B extending backward from the water purifier 1 so as to be connected to the flexible conduit 105 are rigid conduits formed in an inverted U shape so as to get over the rear wall 106A of the drawer 106. . The conduit portion 105E at the intermediate portion of the flexible conduit 105 is disposed in a coiled shape in a cylindrical shape in the front-rear direction in a storage space 107 that allows expansion and contraction thereof.

  In such a configuration, as the drawer 106 is pulled out, the flexible conduit 105 gradually expands as the turned intermediate portion 105A is stretched like 105B, thereby facilitating the drawer 106 to be pulled out. Even when the drawer 106 is completely pulled out as shown in FIG. 7, the flexible conduit 105 still leaves some margin for extension in the intermediate portion 105A. Further, as the drawer 106 is pushed in, the intermediate portion 105A of the flexible conduit 105 contracts and returns as shown in FIG. If comprised in this way, it is not necessary to support the intermediate part 105A of the flexible conduit | pipe 105 with a special support.

  The conduit portion 105 </ b> A that flexibly expands and contracts as the drawer 106 is taken in and out is disposed in the space behind the drawer 106, so that the space 107 that is difficult to use behind the drawer 106 can be effectively used. Moreover, since it does not interfere with the storage of a pan or the like stored in the space below the drawer 106, the bent portion 105A of the conduit 105 can be prevented from being damaged. Further, from the viewpoint of effective use of the storage space in the sink 100, the conduit portion 105A that bends as the drawer 106 is taken in and out is disposed in the space behind the drawer 106 immediately below the faucet 102, thereby the rear of the drawer 106. Can be expected to be used more effectively in difficult-to-use spaces.

  The sink and the undersink water purifier for the sink according to the present invention are not limited to the above-described embodiments, and various modifications can be considered without departing from the technical scope of the present invention, and include various embodiments according to the modifications. It is.

It is sectional drawing which shows the structure of the undersink type water purifier of this invention. (Example 1) It is sectional drawing which shows the structure of the undersink type water purifier of this invention. (Example 2) It is sectional drawing which shows the structure of the undersink type water purifier of this invention. (Example 3) It is composition explanatory drawing of the sink provided with the under sink type water purifier of this invention. Example 4 It is composition explanatory drawing of the sink provided with the undersink type water purifier of this invention in the uppermost drawer. Example 4 It is composition explanatory drawing of the sink provided with the under sink type water purifier of this invention. (Example 5) It is a structure explanatory drawing of the sink in the state which pulled out the drawer of FIG. (Example 5)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 .... Water purifier 2 .... Outer cylinder 3 .... Hollow fiber membrane body 4 .... Cylindrical case (inner cylinder)
4A ... Opening 4D ... Water passage part 5 .... Hollow fiber membrane for water purification 6 .... Round spacing 7 .... Raw water inlet 8 .... Water purification outlet 9 ... -Water flow part 10 ... Communication part 11 ... Cap 12 ... Granular activated carbon for water purification 14 ... Circular attachment part 18, 19 ... Water flow partition 20 ... Water flow elastic member 21 ... Fibrous activated carbon 22 ... Raw water inflow chamber 23 ... Sealing material 50A ... Cylinder case 50B ... Water passage 60 ... Water passage interval 60A, 60B ... Fibrous activated carbon 90 ... Guide plate 90A ... Divation plate 100 ... Sink 101 ... Sink 102 ... Water faucet 103 ... Inlet side tube 105 ... Flexible conduit 105A ... 106 .. Drawer 106A .. Rear wall of drawer 106B, 106C・ Drawer shelf 107 ・ ・ Storage space

Claims (1)

  A hollow fiber membrane for water purification is accommodated in an inner cylinder arranged with an annular interval in the outer cylinder, and granular activated carbon for water purification is accommodated so as to surround the hollow fiber membrane, and one end side of the outer cylinder An under-sink type water purifier having a raw water inlet communicating with the annular interval and a water purification outlet communicating with the hollow fiber membrane on the same side as the raw water inlet is disposed in a space below the sink. It is attached to the drawer in a horizontally placed state, the water purification outlet is connected to the tap water inlet side of the sink faucet through a flexible conduit, and the flexible water that accompanies the withdrawal of the drawer is located behind the water purifier. A sink that is formed with a storage space for storing a telescopic portion of a conductive conduit.

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