JP2007083209A - Water purifying filter, and manufacturing method of self-supporting cylindrical hollow body for the water purifying filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new water purifying filter accommodating activated carbon in a cylindrical hollow body and purifying flowing water passing through the cylindrical wall of the cylindrical hollow body from outside by the activated carbon which can receive a large amount of raw water flowing into an activated carbon layer, exhibit excellent purification effect, and take out a large amount of purified water with a structure suitable for miniaturization by making the structure of an activated carbon-filled part have a special shape. <P>SOLUTION: In a manufacturing method of a self-supporting cylindrical hollow body for the water purifying filter, a thin nonwoven fabric is wound in several turns around a metal bar having a smooth outer surface, the metal bar is heated so that contact parts of fibrous elements of the nonwoven fabric are melted with each other to smooth the surface contacting with the metal bar, and the metal bar is pulled out from the formed cylindrical body of the nonwoven fabric. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a water purification filter in which activated carbon is stored in a cylindrical hollow body, and flowing water that has passed through the cylindrical wall of the cylindrical hollow body from the outside is purified by the activated carbon.

  Water with a water purifier invented as an improvement of a water faucet with a built-in water purification cartridge that has a raw water supply chamber that supplies raw water to the water purification cartridge and a purified water inflow chamber that receives purified water purified by the water purification cartridge side by side. There is a stopper. (For example, refer to Patent Document 1).

In the faucet with a water purifier of Patent Document 1, a cylindrical water purification cartridge is housed in a vertically long faucet body, an inflow portion of raw water is provided at the lower end portion of the faucet body, and the upper end portion of the faucet body is provided. A discharge pipe is attached via a lid member, and a manual open / close valve is incorporated below the water purification cartridge so that the water purification cartridge can be replaced by opening and closing the lid member. As a result, the width and depth dimensions are small and can be configured in a vertically long shape, so that the area where kitchen counters can be used effectively can be increased, it is easy to clean, and the structure of the water passage in the faucet body is simplified. It proposes the effect of reducing the cost and simplifying the replacement of the water purification cartridge.
JP 2004-263504 A

  In this patent document 1, the water purification cartridge built in the faucet has a form in which activated carbon is housed in a plastic cylindrical case in which a large number of raw water inflow openings are formed on the outer peripheral surface. In such a water purification cartridge, since raw water flows only from the raw water inflow opening, the water flow resistance is increased by this opening, and the amount of purified water taken out is reduced. There is a limit even if the raw water inflow opening is enlarged in order to reduce the water flow resistance, and the inner surface of the raw water inflow opening is not allowed to flow out from the raw water inflow opening. If it covers with the filter of the nonwoven fabric which formed the water channel, the activated carbon filling amount will decrease corresponding to the thickness, and the purification effect will fall. Further, if the outer surface of the raw water inflow opening is covered with a non-woven filter having a fine mesh or a fine water passage, the outer diameter of the cylindrical case is substantially increased, and the water purification cartridge cannot be built in the faucet. Therefore, if the outer diameter of the cylindrical case is reduced to a size that can be incorporated in the faucet, the amount of activated carbon filling correspondingly decreases and the purification effect decreases. As described above, the conventional form has a limitation on miniaturization.

  In addition, as a result of downsizing the water purification cartridge in order to incorporate the water purification cartridge in the faucet, it is a problem that the amount of activated carbon is reduced and the purification effect is reduced. When the activated carbon of the cylindrical molded body is adopted, the fibrous one has a large number of voids and the impurity adsorption performance per unit volume is lowered. Moreover, when it is set as a cylindrical molded object, it will not be filled with sufficient quantity of activated carbon by the quantity of the welding binder etc. of activated carbon, Therefore, impurity adsorption performance becomes low.

  In view of such a point, the present invention stores activated carbon in a cylindrical hollow body, and as a water purification filter in which running water that has passed through the cylindrical wall of the cylindrical hollow body from the outside is purified by the activated carbon, the activated carbon filling portion By adopting a special configuration, the amount of raw water flowing into the activated carbon layer can be increased with a configuration suitable for downsizing, and the purification effect is excellent and a large amount of purified water can be taken out. Moreover, it shall be excellent in the purification effect in activated carbon by making activated carbon into the cylindrical body easily, and taking sufficient activated carbon filling amount.

  In the first invention, a thin non-woven fabric made of olefin or the like having a predetermined width and length made by a spunbond method or the like is applied to a metal bar (hollow pipe or simple bar form) having a smooth outer surface. And the non-woven fabric is heated in a semi-molten state to weld the contact portions between the fibrous portions of the non-woven fabric and smooth on the contact surface with the metal rod. It is a manufacturing method of the self-supporting cylindrical hollow body for water-purifying filters which accommodates activated carbon of a spherical fine particle by removing the said metal rod from the cylindrical body of the nonwoven fabric formed by cooling after forming a surface.

  In the second invention, a thin non-woven fabric such as olefin having a predetermined width and length made by a spunbond method or the like is used as a metal rod (hollow pipe or simple rod shape) having a smooth outer surface. And the non-woven fabric is heated in a semi-molten state to weld the contact portions between the fibrous portions of the non-woven fabric and smooth on the contact surface with the metal rod. After forming the surface, a self-supporting cylindrical hollow body is manufactured by pulling out the metal rod from the non-woven tubular body formed by cooling, and this cylindrical hollow body is manufactured by the same method as this cylindrical hollow body. Manufacturing a small-diameter self-supporting inner cylinder, placing the inner cylinder in the cylindrical hollow body, and filling the annular space between the cylindrical hollow body and the inner cylinder with activated carbon of spherical fine particles And forming an activated carbon layer to produce a water purification filter A.

  With regard to the first invention, in the activated carbon storage configuration in which a large number of openings formed in the peripheral wall of the plastic cylindrical case are closed with a filter as in the prior art, the water flow resistance is increased by this opening, and the flow rate of the purified water is also increased. In addition, the activated carbon filling amount is reduced due to the reduction in the amount of activated carbon due to the downsizing of the cylindrical case, and the purification effect is reduced, but in the present invention, the activated carbon storage portion for storing the activated carbon of the water purification filter is standing with the water-permeable nonwoven fabric itself. Since it is formed by a cylindrical hollow body formed so as to be maintained, it is a container that itself stores activated carbon, and water can pass from the entire periphery thereof, so that the purification effect is improved by an abundant amount of water.

  In the present invention, since the tubular body itself of the water-permeable nonwoven fabric is a container for storing activated carbon, the amount of stored activated carbon can be increased as compared with the conventional form having the same outer diameter, and the size can be reduced. It will be suitable. Furthermore, since the cylindrical body surrounding the active layer is a self-supporting cylindrical body of a water-permeable nonwoven fabric, and the active layer is formed by filling activated carbon with spherical fine particles, the fibrous activated carbon is solidified with a binder and the self-supporting cylinder is formed. Since the active layer has a considerably small diameter compared to the case where it is formed in a shape, it is applied to the faucet in a state where the lower part is below the upper wall of the sink that is the faucet installation surface as in the embodiment. It is suitable for small water purification filters.

  In the second invention, in addition to the effects of the first invention, the activated carbon is formed of a cylindrical hollow body formed so as to maintain a standing state with the water-permeable nonwoven fabric itself and an inner cylindrical body inside thereof. Since it is stored in the cylindrical space, the water that has flowed into the water purification cartridge storage part flows almost uniformly from the periphery of the cylindrical wall of the cylindrical hollow body toward the activated carbon and passes through the cylindrical wall of the inner cylindrical body. In this way, water flows into the activated carbon layer from the entire length of the cylindrical space, and the water purified by the activated carbon passes through the cylindrical wall of the inner cylindrical body as it is and flows through the inner cylindrical body to form a hollow fiber membrane. To go through. For this reason, the purification effect in the activated carbon layer is improved, and the inner cylinder forms a water passage that leads to the hollow fiber membrane. Therefore, the structure for adjusting the flow of water in the water purification cartridge is excellent, and a preferable purification effect is obtained. As with the effect of the first invention, it is suitable for downsizing.

  The present invention includes a thin olefin-based non-woven fabric having a predetermined width and length made by a spunbond method or the like, and includes a metal rod (hollow pipe or simple rod shape) having a smooth outer surface. ) Is wound a plurality of times into a heating furnace, the nonwoven fabric is heated to a semi-molten state, and the contact portions between the fibrous portions of the nonwoven fabric are welded and the contact surface with the metal rod is smooth. Is formed by cooling, and the metal rod is removed from the formed tubular body of the nonwoven fabric to form a self-supporting tubular hollow body for a water purification filter that contains activated carbon of spherical fine particles. Embodiments will be specifically described.

Next, an embodiment of the present invention will be described. Each figure shows an embodiment of the present invention, FIG. 1 is an overall view showing the internal configuration of a water purification cartridge equipped with a water purification filter according to the present invention in a half section, and FIG. 2 is a view of a hollow fiber membrane storage part of the water purification cartridge. 3 is a cross-sectional view of the cylindrical main body, FIG. 3 is an upper side view of the cylindrical main body of the hollow fiber membrane storage unit, FIG. 4 is a lower side view of the cylindrical main body of the hollow fiber membrane storage unit, and FIG. 6 is a cross-sectional view of the cover portion of the hollow fiber membrane storage portion, FIG. 6 is an upper side view of the cover portion of the hollow fiber membrane storage portion, FIG. 7 is a lower side view of the cover portion of the hollow fiber membrane storage portion, and FIG. FIG. 9 is a cross-sectional view of a tubular hollow body of a water-permeable nonwoven fabric forming the activated carbon storage part of the water purification filter according to the present invention, and FIG. 10 is fitted to one end of the tubular hollow body of FIG. 11 is a side view of the sealing material, FIG. 11 is a top view of the sealing material in FIG. 10, and FIG. 12 is a bottom view of the sealing material in FIG. 3 is a cross-sectional view of the inner cylinder of the water-permeable nonwoven fabric disposed in the cylindrical body of FIG. 9, FIG. 14 is a side view of a support member fitted to one end of the inner cylinder of FIG. 13, and FIG. 16 is a bottom view of the supporting member in FIG. 14, FIG. 17 is a side view of the sealing material fitted to the other end of the cylindrical hollow body in FIG. 9, and FIG. 18 is a top view of the sealing material in FIG. 19 is a bottom view of the sealing material of FIG. 17, and FIG. 20 is an assembly of the inner cylinder in which the supporting member of FIG. 14 is coupled to the bottom of one end of the inner cylinder of FIG. 13 and the sealing material of FIG. FIG. 21 is a perspective view with the bottom of the cylindrical assembly formed by joining the assembly of the inner cylinder of FIG. 20 in the cylindrical hollow body of FIG. 9, and FIG. 22 is a perspective view of the cylindrical assembly. 23 is a plan view of the opening at one end, FIG. 23 is a cross-sectional view of a state where the activated carbon filling portion of the cylindrical assembly is filled with activated carbon, and FIG. FIG. 25 is a perspective view of a metal rod and a water-permeable non-woven fabric, and FIG. 26 is a metal rod. 27 is a perspective view of a state where winding of the water-permeable nonwoven fabric is started, FIG. 27 is a perspective view of a state where winding of the water-permeable nonwoven fabric is wound around the metal rod, and FIG. FIG. 29 is a perspective view of a state in which the end of a water-permeable nonwoven fabric wound around a metal rod is taped, and FIG. 30 is a perspective view of a state in which the metal rod is extracted from the rigid tubular body of the nonwoven fabric formed by heating. FIG. 31 is a perspective view showing an operation for adjusting the length of the rigid tubular body of the nonwoven fabric, FIG. 32 is an enlarged view of the nonwoven fabric explaining a state in which the fibrous portion is welded by heating, and FIG. 33 is a fiber that contacts the metal rod by heating. Nonwoven fabric explaining a state in which a smooth surface is formed on the shaped part FIG. 34 is a front view for explaining a state in which the water purification cartridge having the water purification filter according to the present invention is provided in the sink, and FIG. 35 is a state in which the water purification cartridge having the water purification filter according to the present invention is provided in the sink. FIG.

  The present invention incorporates a water purification cartridge 7 having a water purification filter 7A containing activated carbon, and a faucet 1 for taking out the purified water that has passed through the water purification cartridge 7 is attached to a faucet such as a kitchen shelf, a cooking table or a sink. Provided as a water purification apparatus attached to the unit 2 is a novel water purification filter 7A that is suitable for downsizing the built-in water purification cartridge 7 and from which abundant purified water can be taken out. As a result, the height of the upward protrusion from the faucet mounting portion 2 can be reduced, and further, a water purifier capable of easily replacing the water purifying cartridge 7 can be provided. Hereinafter, one embodiment in which a water purification apparatus including the water purification filter 7A of the present invention is applied to the sink 5 will be described with reference to the drawings.

  As shown in FIGS. 34 and 35, the water purifier including the water purifying filter 7A (also referred to as the activated carbon storage filter 7A) according to the present invention is also referred to as the upper wall (or top plate) of the sink 5 that is the faucet mounting portion 2. ) The faucet 1 is attached to 6 so as to protrude upward. The faucet 1 includes a faucet body 11 that contains a water purification cartridge 7 and a water discharge member 10 that is attached to the faucet body 11 and discharges purified water that has passed through the water purification cartridge 7 from a water outlet 21. The water discharge member 10 is attached to the faucet main body 11 by a nut member 26 so as to be freely rotatable left and right. The faucet body 11 accommodates a water purification cartridge 7 in a state of passing through the upper wall 6 of the sink 5 that is the wall of the faucet mounting portion 2, and the water purification cartridge 7 is detachable from above the upper wall 6. 11 is held. In addition, the water supply channel 3 of the tap water supplied to the water purification cartridge 7 is opened and closed by the electromagnetic valve 4, and a control operation unit 25 of the electromagnetic valve 4 is provided at an appropriate position of the water tap 1. In the illustrated form, the control operation unit 25 is provided at the distal end portion of the water discharge member 10 so as to be operable from the upper surface.

  This will be described in further detail. The sink 5 forms a sink 15 integrally with an upper wall (or a top plate) 6 by pressing a flat plate made of stainless steel or the like. The sink 15 has a drain outlet formed on the back side. The sink 15 has left and right portions of the drainage port projecting to the near side, and the upper wall 6 in the vicinity of the sink 15 formed by this projecting is provided with a mounting hole 12 of the faucet 1 and a raw water faucet 35 to be described later. A mounting hole 34 is formed. The faucet body 11 is fixed to the upper wall 6 by a mounting nut 13 so as to pass through the mounting hole 12 by using the mounting hole 12. The faucet body 11 includes a cylindrical water purification cartridge storage portion 16 that stores the cylindrical water purification cartridge 7 in a vertically long shape. A water inlet portion 17 is provided at a lower portion of the water purification cartridge storage portion 16. The outlet portion 18 of the water that has passed through is formed in the upper part of the water purification cartridge storage portion 16 in the circumferential direction.

  As a water purification cartridge, a cartridge in which raw water passes through a portion in which granular activated carbon is accommodated and then purified through a portion in which a hollow fiber membrane is accommodated is known, and there are various structures. The water purification cartridge 7 of the present invention is also structured to be purified through the hollow fiber membrane 7Q after the raw water as tap water passes through the activated carbon 7P, but has a specific configuration.

  One form of the water purifier according to the present invention is such that the faucet 1 is arranged on the wall of the faucet mounting part 2, that is, the upper wall 6 of the sink 5, and the faucet body 11 has a sink that is the faucet mounting part 2. 5 is a state in which the water purification cartridge 7 is arranged in the vertical direction across the upper and lower portions of the upper wall 6. In addition, the water purification cartridge 7 is held in the faucet body 11 so as to be detachable from above the upper wall 6 and is easy to replace. In order to provide a water purification cartridge 7 suitable for such a configuration, the water purification cartridge 7 includes a water purification filter 7A that stores activated carbon 7P that forms a cylindrical small-diameter lower portion with a small diameter, and a cylindrical large-diameter upper portion above it. The upper end of the water purification filter 7A that is a cylindrical small-diameter lower part and the lower end of the hollow fiber membrane 7Q storage part 7B that is a cylindrical large-diameter upper part are formed in a vertically long shape that forms a hollow fiber membrane 7Q storage part 7B The parts are combined.

  A specific configuration of the water purification cartridge 7 provided with the water purification filter 7A according to the first invention will be described below. A water purification cartridge storage portion 16 is formed in the faucet body 11 so that a vertically-long water purification cartridge 7 is stored vertically in the faucet 1. The water purification cartridge 7 includes a cylindrical water purification filter 7A for storing activated carbon 7P and a cylindrical hollow fiber membrane storage portion 7B for storing a hollow fiber membrane 7Q above the water purification filter 7A. The water purification filter 7A is made of synthetic resin. Activated water 7P is housed in a self-supporting cylindrical hollow body 7H formed so as to maintain a standing state with the aqueous nonwoven fabric itself, and raw water flowing into the water purification cartridge housing portion 16 for purification is It passes through the cylindrical wall of the cylindrical hollow body 7H, is purified by activated carbon 7P, and then sequentially passes through the hollow fiber membrane 7Q so that purified water is taken out from the faucet 1.

  Next, a specific configuration of the water purification cartridge 7 including the water purification filter 7A according to the second invention will be described below. The first invention shows a basic form in which the space in the cylindrical hollow body 7H is filled with activated carbon 7P, but the second invention is a self-supporting inner cylinder 7G in the cylindrical hollow body 7H of the first invention. And a cylindrical space formed between the cylindrical hollow body 7H and the inner cylindrical body 7G is an activated carbon filling space 80. For this reason, the second invention is based on the first invention.

  Specifically, in the second invention, the water purification cartridge 7 includes a cylindrical water purification filter 7A that stores activated carbon 7P, and a cylindrical hollow fiber membrane storage portion 7B that stores the hollow fiber membrane 7Q above it. The water purification filter 7A is a self-supporting cylindrical hollow body 7H formed so as to maintain a standing state with the water-permeable nonwoven fabric itself, and is maintained substantially concentrically on the inside and standing with the water-permeable nonwoven fabric itself. A cylindrical space formed between the self-supporting inner cylinder 7G formed to form an activated carbon filling space 80, and the activated carbon 7P is accommodated in the activated carbon filling space 80. The inflowing raw water passes through the cylindrical wall of the cylindrical hollow body 7H and is purified by the activated carbon 7P, and then passes through the cylindrical wall of the inner cylindrical body 7G and passes upward through the inner cylindrical body 7G. It reaches the membrane 7Q, passes through the hollow fiber membrane 7Q, and the faucet 1 A configuration in which al purified water is taken out.

  In the first and second inventions, the activated carbon 7P is a spherical fine particle in order to increase the contact area with water and to ensure a sufficient filling amount, and the average particle diameter, that is, the particle diameter. Employs spherical activated carbon having an average of 50 μm to 200 μm (μm is micrometer, the same applies hereinafter). Further, the cylindrical hollow body 7H of the water-permeable nonwoven fabric is formed with a space passage that penetrates the cylindrical wall in and out so that water flows into the activated carbon 7P layer from substantially the entire periphery of the activated carbon 7P layer. It is a cylindrical body of the nonwoven fabric 70 made of synthetic resin such as olefin type made by a spunbond method or the like. And in order to perform filling of the spherical activated carbon 7P satisfactorily, an olefin-based nonwoven fabric 70 made by a spunbond method or the like forms a cylindrical body having a smooth inner surface by thermoforming.

  One method for producing the cylindrical hollow body 7H will be described below. As shown in FIG. 25, a synthetic resin non-woven fabric 70 formed in a thin strip shape having a predetermined width and length of olefin type made by a spunbond method and having a thickness of 0.1 mm to 0.5 mm is provided. As shown in FIG. 27, the end of the nonwoven fabric roll 71 wound in a roll shape is pulled out, and the left and right ends of the nonwoven fabric 70 are pulled as shown in FIG. 28 (including any of simple bar shapes) is wound a predetermined number of times (for example, 10 to 20 times) so that the finished thickness of the cylindrical hollow body 7H is about 1 mm to 3 mm. As shown in FIG. 29, the cut end is stopped with a tape 73 made of paper or the like. And this is put into a heating furnace, the nonwoven fabric 70 wound with this metal rod 72 is heated to a semi-molten state, and by this heating, the contact portion 70B between the fibrous portions of the nonwoven fabric 70 overlapped by the winding. The contact surface of the fibrous portion of the nonwoven fabric 70 that contacts the metal rod 72 is softened by the semi-molten state to become a smooth smooth surface 70C. By this heating, as shown in FIG. 32, the water passage remains between the fibrous portions 70 </ b> A of the nonwoven fabric 70 overlapped by winding.

  Such a heating temperature is a temperature lower than the complete melting temperature (for example, 200 ° C.) of the thin nonwoven fabric 70 wound around the metal rod 72. That is, by heating, the contact portions 70B of the fibrous portions 70A are welded in a semi-molten state as described above, and the contact surface with the metal rod 72 becomes a smooth smooth surface 70C by melting. However, the temperature is lower than the complete melting temperature (for example, 200 ° C.) at which the water passage formed between the fibrous portions 70A becomes blocked, and for example, a range of 130 ° C. to 170 ° C. is preferable. After such heating, the cylindrical hollow body 7H having a smooth inner surface 70C as shown in FIG. 33 is formed by being taken out from the heating furnace and naturally cooled or forcedly cooled by a blower. The Then, as shown in FIG. 30, the cooled cylindrical hollow body 7 </ b> H is pulled out from the metal rod 72. The cylindrical hollow body 7H formed in this way has a wall thickness of about 1 mm to 3 mm (mm is the millimeter, the same shall apply hereinafter) and can be used without being supported by a support cylinder such as plastics. A self-supporting cylinder having sufficient rigidity is formed so as to maintain a straight cylinder (maintaining an upright cylinder) while standing with the shape of the water-permeable nonwoven fabric itself. As shown in FIG. 31, this cylindrical hollow body 7H cuts both ends with a rotary cutter device 74 so as to have a prescribed length. A cylindrical hollow body 7H having a predetermined length is manufactured by such a manufacturing process. The cylindrical hollow body 7H formed in this way is in a state where the spherical fine particle activated carbon 7P is captured by the fibrous portion 70A of the nonwoven fabric 70, and a fine water passage sufficiently smaller than the spherical activated carbon 7P has its wall. It is formed through the wall over the entire circumference, and the inner surface forms a smooth surface 70C.

  Similarly to the cylindrical hollow body 7H, the inner cylindrical body 7G is a cylindrical body with a smooth inner surface formed by thermoforming an olefin-based synthetic resin nonwoven fabric 70 made by a spunbond method or the like. The manufacturing method of the inner cylindrical body 7G is the same as that of the cylindrical hollow body 7H, and one of the manufacturing methods will be described below. That is, as shown in FIG. 25, a synthetic resin nonwoven fabric formed in a thin strip shape having a predetermined width and length of an olefin type made by a spunbond method and having a thickness of 0.1 mm to 0.5 mm. The end of a non-woven fabric roll 71 having a roll 70 is drawn out, and a metal rod 72 having a smooth outer surface as shown in FIG. Wound a predetermined number of times (for example, 10 to 20 times) so that the finished thickness of 7G is about 1 mm to 3 mm, and cut in this state as shown in FIG. 28, and the cut end is shown in FIG. As shown, it is stopped with a tape 73 made of paper or the like. And this is put into a heating furnace, the nonwoven fabric 70 wound with this metal rod 72 is heated to a semi-molten state, and by this heating, the contact portion 70B of the fibrous portions of the nonwoven fabric 70 is welded, Further, the contact surface with the metal rod 72 becomes a smooth smooth surface 70C by melting. By this heating, as shown in FIG. 32, the water passage remains between the fibrous portions 70 </ b> A of the nonwoven fabric 70.

  Such a heating temperature is a temperature lower than the complete melting temperature (for example, 200 ° C.) of the thin nonwoven fabric 70 wound around the metal rod 72. That is, by heating, the contact portions 70B of the fibrous portions 70A are welded in a semi-molten state as described above, and the contact surface with the metal rod 72 becomes a smooth smooth surface 70C by melting. However, the temperature is lower than the complete melting temperature (for example, 200 ° C.) at which the water passage formed between the fibrous portions 70A becomes blocked, and for example, a range of 130 ° C. to 170 ° C. is preferable. After such heating, it is taken out from the heating furnace and is naturally cooled or forcedly cooled by a blower to form a cylindrical inner cylinder 7G whose inner surface is a smooth surface as shown in FIG. Then, as shown in FIG. 30, the cooled inner cylinder 7 </ b> G is pulled out from the metal rod 72. The inner cylinder 7G formed in this way has a wall thickness of about 1 mm to 3 mm (mm is millimeter, hereinafter the same), and can be cylindrical without being supported by a support cylinder such as plastics. A self-supporting cylinder having sufficient rigidity is formed so as to maintain a straight cylinder (maintaining an upright cylinder) while standing by the water-permeable nonwoven fabric itself. As shown in FIG. 31, both ends of the inner cylinder 7G are cut by a rotary cutter device 74 so as to have a specified length. By such a manufacturing process, the inner cylinder 7G having a predetermined length is manufactured. The inner cylindrical body 7G thus formed is in a state where the spherical fine particle activated carbon 7P is captured by the fibrous portion 70A of the nonwoven fabric 70, and a fine water passage sufficiently smaller than the spherical activated carbon 7P is formed on the entire wall. It is formed through the wall over the circumference, and the inner surface forms a smooth surface 70C. In addition, the cylindrical hollow body 7H and the inner cylinder 7G may be synthetic resins other than olefin-based materials, or may employ a nonwoven fabric 70 formed by a manufacturing method other than the spunbond method.

  The first invention and the second invention differ in the configuration of the activated carbon filling space, but the others are common, and the second invention is based on the first invention. Therefore, since the first invention can be understood by the second invention in which the inner cylindrical body 7G is arranged in the cylindrical hollow body 7H, hereinafter, the second invention in which the inner cylindrical body 7G is arranged in the cylindrical hollow body 7H is also described. The assembly of the water purification cartridge 7 will be described.

  First, the manufacturing method of the water purification filter 7A of this invention is demonstrated. A cylindrical body of a water-permeable nonwoven fabric manufactured as described above, that is, a cylindrical hollow body 7H and an inner cylindrical body 7G are prepared, and one end upper end portion of the inner cylindrical body 7G is as shown in FIGS. A disc-shaped synthetic resin sealing material 62 is attached to the periphery of the center hole 62A by an adhesive such as hot melt, and a synthetic resin support member 63 is attached to the lower end of the other end of the inner cylinder 7G. It has been. As shown in FIGS. 14 to 16, the synthetic resin support member 63 has a disk-shaped 63 B at the center, and an arc-shaped support arm 63 A protruding substantially symmetrically in the radial direction of the disk-shaped 63 B is formed. Made of synthetic resin, the lower end of the other end of the inner cylindrical body 7G and the annular groove formed in the disk shape 63B are joined together by an adhesive such as hot melt. In this way, an inner cylinder assembly 7G1 as shown in FIG. 20 is formed and prepared.

  The inner cylinder assembly 7G1 thus configured is inserted into the cylindrical hollow body 7H from the support member 63 side. Since the outer diameter of the support member 63 is substantially equal to the inner diameter of the cylindrical hollow body 7H, the outer peripheral surface of the support arm portion 63A of the support member 63 is in a state of being substantially in contact with the inner peripheral diameter of the cylindrical hollow body 7H. Inserted. This insertion is performed until the sealing material 62 is fitted into the cylindrical hollow body 7H, and the outer peripheral flange 62B of the sealing material 62 contacts the end of the cylindrical hollow body 7H. The sealing material 62 and the cylindrical hollow body 7H are joined by an adhesive such as hot melt. In this way, as shown in FIG. 21, the cylindrical assembly 7M in which the cylindrical hollow body 7H and the inner cylindrical body 7G are arranged substantially concentrically is formed by inserting the inner cylindrical assembly 7G1. .

  The cylindrical assembly 7M assembled in this way has the sealing material 62 side down as shown in FIG. 21, and in this state, from the activated carbon injection opening 61 formed between the support arm portions 63A of the support member 63. 23, spherical activated carbon 7P having an average particle size of fine particles of 50 μm to 200 μm is injected into the activated carbon filling space 80 formed between the cylindrical hollow body 7H and the inner cylindrical body 7G. . In this case, a sufficient amount of spherical activated carbon 7 </ b> P until reaching the support member 63 is filled. After filling the spherical activated carbon 7P, as shown in FIGS. 17 to 19 and 24, a disc-shaped synthetic resin sealing material 65 in which an elastic O-ring 64 is fitted in an annular groove 65A formed on the outer peripheral surface is supported. The cylindrical hollow body 7H is press-fitted to an overlapping position that is close to or abuts the outside of the member 63. Thereby, the outer peripheral surface of the sealing material 65 and the inner peripheral surface of the cylindrical hollow body 7H are sealed by the elastic O-ring 64. And in order to strengthen the coupling | bonding with the outer peripheral edge part of the sealing material 65, and the internal peripheral surface of the cylindrical hollow body 7H, both are couple | bonded with adhesives, such as a hot melt. In this way, as shown in FIG. 24, the water purification filter 7A in a state where the activated carbon 7P is filled in the activated carbon filling space 80 formed between the cylindrical hollow body 7H and the inner cylinder 7G is formed. .

  In addition, in order to obtain a good water purification effect by the activated carbon 7P and to be able to remove metal ions such as lead, the activated carbon 7P is a spherical fine particle and has an average particle diameter of 50 μm to 200 μm. And the activated carbon filling space in the cylindrical hollow body 7H of the water-permeable nonwoven fabric together with the short-length ion exchange fibers. As the ion exchange fiber having a smaller thickness can be filled with more ion exchange fibers, the surface area of contact with water is increased and the purification effect is improved. For this reason, the spherical activated carbon 7P having an average particle diameter of 50 μm to 200 μm is placed in the cylindrical hollow body 7H of the water-permeable nonwoven fabric 70 together with ion exchange fibers having a thickness of 5 μm to 50 μm and a length of 0.2 mm to 2.0 mm. By the filled configuration, the contact area between the spherical activated carbon 7P and the ion exchange fiber and water is sufficiently secured, and the metal ion removing action is also improved. The hollow fiber membrane 7Q is a state in which a large number of hollow fiber membranes 7Q are accommodated in a U-shape in the large-diameter upper portion 7B.

  In the above, various mixing ratios of the spherical activated carbon 7P and the ion exchange fiber are conceivable, but considering the filtration effect of trihalomethane by the spherical activated carbon 7P and the filtration effect of lead ions by the ion exchange fiber, the volume of the ion exchange fiber is considered. Is preferably spherical activated carbon 7P: ion exchange fiber = 200 ml to 20 ml: 5 ml (ml is milliliter, the same applies hereinafter), that is, a mixing ratio of 40 to 4: 1 is preferable. In this case, if the amount of trihalomethane filtered by the spherical activated carbon 7P and the amount of lead ions filtered by the ion exchange fiber are intended to be substantially the same, the ratio of the spherical activated carbon 7P: ion exchange fiber = 55 ml: 5 ml, that is, When the volume of the ion exchange fiber is 1, the volume of the spherical activated carbon 7P can be set to 11.

  As one of the measurement methods in this case, since the ion exchange fiber is a small fiber, the measurement variation is likely to be fluffy, so that a mixture of the spherical activated carbon 7P and the ion exchange fiber is respectively used as the outer cylindrical body 7H. The activated carbon filling space 80 or the activated carbon filling space 80 of the cylindrical space is filled, the mixed ones are taken out, the volume of the spherical activated carbon 7P is confirmed, and the volume of the confirmed spherical activated carbon 7P is confirmed. By subtracting from the volume of the filling space 80, the volume of the ion exchange fiber mixed with the spherical activated carbon 7P in each of the first and second inventions can be calculated.

  On the other hand, many hollow fiber membranes 7Q are accommodated in the U shape in the hollow fiber membrane accommodating part 7B made of synthetic resin. Around the upper periphery of the hollow fiber membrane storage portion 7B, a plurality of outlets 18A of purified water that has passed through the hollow fiber membrane 7Q are formed on the circumference, and the upper surface of the hollow fiber membrane storage portion 7B is coupled to a cap 14 described later. 7C is formed. Due to manufacturing limitations, the hollow fiber membrane storage portion 7B is composed of a cylindrical main body portion 7BB that stores the hollow fiber membrane 7Q and a cover portion 7D that is coupled thereto. The cover portion 7D of the internal space has a plurality of water purification outlets 18A formed on the circumference wall so as to be long on the circumference, and a protrusion 7C that is coupled to a cap 14 described later is formed on the upper surface. The cylindrical main body portion 7BB and the cover portion 7D have the opening peripheral edge 7D1 of the cover portion 7D at the upper end opening 7E peripheral portion 7E1 of the cylindrical main body portion 7BB in a state where the hollow fiber membrane 7Q is accommodated in the cylindrical main body portion 7BB. By ultrasonic welding, both are joined so that there is no water leakage. Cylindrical main-body part 7BB and cover part 7D each form the annular groove 7B3 in the outer surface.

  The upper end portion of the water purification filter 7A configured as described above and the lower end of the hollow fiber membrane storage portion 7B are combined. This coupling is performed by fitting an annular flange 7B2 formed at the peripheral edge of the lower end opening 7B1 of the hollow fiber membrane housing portion 7B and an inner peripheral surface of the recess 62C of the sealing material 62. By this connection, a water purification cartridge 7 as shown in FIG. 1 is formed. In order to strengthen this connection, the annular flange 7B2 and the sealing material 62 are bonded with an adhesive such as hot melt, but may be configured such that both are screw-connected via an O-ring shaped seal ring. .

  With such a configuration, in the activated carbon storage form in which a large number of openings formed in the peripheral wall of the plastic cylindrical case are closed with a filter as in the conventional case, the amount of activated carbon is reduced by downsizing the cylindrical case. Although the purification effect is reduced, the water purification filter 7A of the present invention is a container in which the cylindrical hollow body 7H of the water-permeable nonwoven fabric itself contains the activated carbon 7P. The amount of storage can be increased, which is suitable for downsizing. And it becomes a thing suitable for the type accommodated in a water faucet in the state where the lower part of a water purification cartridge dives under the upper wall etc. of the sink which is a faucet installation surface like an Example.

  Since the activated carbon 7P of the present invention is spherical fine particles, the inner surface of the cylindrical hollow body 7H of the water-permeable nonwoven fabric is a smooth surface, so that the activated carbon 7P can be smoothly filled without applying high pressure, and the activated carbon 7P They can be brought into close contact with each other to ensure a sufficient amount of filling in the activated carbon filling space 80, and even when the water purification filter 7A is downsized, the purification effect of the activated carbon 7P is excellent.

  In the water purifier including the water purifying filter 7A according to the present invention, the water purifying cartridge 7 configured as described above is accommodated in the water purifying cartridge accommodating portion 16 in the faucet body 11 in a vertically long state. Hereinafter, this configuration will be described. In accordance with the shape of the water purification cartridge 7, the water purification cartridge housing portion 16 includes a small diameter housing portion 16 </ b> A for housing a water purification filter 7 </ b> A that forms the lower cylindrical portion of the water purification cartridge 7, and a hollow that forms the upper cylindrical portion of the water purification cartridge 7. A large-diameter storage portion 16B that stores the storage portion 7B of the yarn film 7Q is formed. Since the outer diameter of the storage portion 7B of the hollow fiber membrane 7Q is slightly smaller than the inner diameter of the large diameter storage portion 16B, the storage portion 7B of the hollow fiber membrane 7Q is in a state of being almost fully fitted into the large diameter storage portion 16B. . Further, since the outer diameter of the water purification filter 7A is sufficiently smaller than the inner diameter of the small diameter storage portion 16A, an annular space 28 is formed around the water purification filter 7A. As will be described later, the annular space 28 becomes a passage filled with the inflowing raw water.

  A circular step portion 11C appears on the outer surface of the faucet body 11 corresponding to the water purification cartridge storage portion 16 due to the difference in diameter between the small diameter storage portion 16A and the large diameter storage portion 16B. A resilient packing 19 is attached in a circular ring shape to the step portion 11C. In order to reinforce the faucet attachment part 2, a reinforcing member 22 is attached to the peripheral part of the attachment hole 12 on the lower surface of the upper wall 6 of the sink 5 by means such as adhesion.

  When the faucet body 11 is attached, the pipe 3 </ b> A constituting the water supply path 3 is not connected to the water inlet portion 17 at the lower portion of the water purification cartridge storage portion 16. In this state, the small diameter storage portion 16A of the water purification cartridge storage portion 16 is set from above so as to pass through the mounting hole 12 of the upper wall 6 of the sink 5, and the packing 19 contacts the upper surface of the upper wall 6 of the sink 5. In this state, the mounting nut 13 is screwed into the screw portion 23 formed on the outer peripheral surface of the small diameter storage portion 16A from below the upper wall 6. By tightening the mounting nut 13, the stepped portion 11 </ b> C comes into contact with the upper wall 6 of the sink 5 while the packing 19 is compressed, and the faucet body 11 is fixed to the upper wall 6. In this way, the step portion 11C is locked to the upper surface of the peripheral edge of the mounting hole 12, and thus can be referred to as a locking portion.

  The mounting hole 12 in the upper wall 6 of the sink 5 is formed at a position corresponding to the space 50 formed between the rear side of the sink 15 and the back plate 5A of the sink 5, and the faucet 1 as described above. The water purification cartridge 7 is held in a state of penetrating the upper wall 6 of the sink 5 that is the faucet attachment portion 2 and entering the space 50 by the attachment of the water purifier. For this reason, mainly, the water purification filter 7A enters a state of entering (invading) the space 50 below the faucet mounting part 2, and the hollow fiber membrane storage part 7B projects upward from the upper wall 6 of the sink 5. Retained.

  After the water faucet 1 is attached as described above, the water supply pipe 3 </ b> A constituting the water supply passage 3 is connected to the water inlet portion 17 below the water purification cartridge storage portion 16 by the attachment nut 31. The other end of the water supply pipe 3 </ b> A is connected to the outlet side of the electromagnetic valve 4. The inlet side of the solenoid valve 4 is connected to the outlet side of the stop cock 40 connected to the supply pipe for city water. The stop cock 40 can be controlled to the supply state and the stop state of tap water by the rotation of a knob 41 that can be rotated by hand. The outlet side of the stop cock 40 is branched by a branch pipe 42 into an inlet side pipe 36 </ b> A of the electromagnetic valve 4 and a water supply pipe 36 on the raw water tap 35 attached to the upper wall 6. The solenoid valve 4 may be a flow rate adjustable solenoid valve 4 that can adjust the flow rate by operating a coma valve with a screwdriver (driver) or the like.

  In order to facilitate the replacement of the water purification cartridge 7, the upper end of the water purification cartridge housing portion 16 is open, and this opening is a cap formed on the outer surface with a screw portion that is screwed into a screw portion 29 formed on the inner surface of the opening. 14 can be opened and closed. A watertight seal packing 30 between the cap 14 and the water purification cartridge housing 16 is attached to the cap 14 or the faucet body 11. And the water purification cartridge 7 can be attached or detached with the attachment or detachment of the cap 14 with respect to the water purification cartridge accommodating part 16. FIG. For this reason, the screw part of the outer surface of the protrusion 7C formed on the upper surface of the hollow fiber membrane storage part 7B and the screw part of the attachment part 14A formed at the center part of the cap 14 are screwed together, and the water purification cartridge is attached to the cap 14. 7 is attached. In this state, the watertight seal between the cap 14 and the water purification cartridge 7 is maintained by the elastic O-ring 30A fitted in the annular groove 7B3 formed on the outer surface of the hollow fiber membrane storage portion 7B.

  In this way, with the water purification cartridge 7 attached to the cap 14, the water purification cartridge 7 is inserted into the water purification cartridge housing portion 16 from the upper surface opening, and the screw portion on the outer surface of the cap 14 is threaded on the inner surface of the water purification cartridge housing portion 16. The water purification cartridge 7 is attached and housed in the water purification cartridge housing portion 16 by being screwed into 29. Then, by rotating the cap 14 on the contrary, the cap 14 is detached from the water purification cartridge housing portion 16, and the water purification cartridge 7 can be removed from the water purification cartridge housing portion 16 together with the cap 14. For this reason, the water purification cartridge 7 can be exchanged by removing the threaded engagement between the protrusion 7C on the upper surface of the water purification cartridge housing 16 and the attachment 14A of the cap 14 and attaching the new water purification cartridge 7 to the cap 14. .

  The raw water faucet 35 is mounted in the same manner as the faucet 1. That is, the reinforcing material attached to the lower surface of the upper wall 6 is set so as to penetrate the mounting hole 34 formed in the upper wall 6 so that the stepped portion formed on the outer surface of the faucet body 37 contacts the upper wall 6. A fixing nut 39 is formed on the outer surface of the faucet body 37 through 38 and is fastened and fixed to the screw portion. The raw water supply tap 35 can supply and stop the raw water from the water discharge member 33 by opening and closing the open / close valve in the faucet body 37 by the vertical movement of the lever 32.

  As described above, in the state where the water purification cartridge 7 is housed in the faucet 1, the raw water supplied from the water supply channel 3 enters the water purification cartridge housing portion 16 from the water inlet portion 17 below the water purification cartridge housing portion 16. It enters into the annular space 28 formed around the disposed water purification filter 7 </ b> A and fills the annular space 28. The raw water flowing into the annular space 28 passes through a fine water passage formed between the fibrous portions 70A from the entire peripheral surface of the cylindrical hollow body 7H corresponding to the annular space 28 by the supply pressure of tap water. It reaches the spherical activated carbon 7P. The raw water that has reached the spherical activated carbon 7P is purified by passing through the spherical activated carbon 7P, while passing through a fine water passage formed between the fibrous portions 70A from substantially the entire peripheral wall surface of the inner cylindrical body 7G. It enters the hollow passage 7G2 inside the cylindrical body 7G, ascends the hollow passage 7G2, and flows into the hollow fiber membrane storage portion 7B from the center hole 62A of the sealing material 62. As described above, the inner surface 7G that has been heat-molded has a smooth inner surface, which is the surface of the hollow passage 7G2, so that the resistance of water flowing through the hollow passage 7G2 is small and the flow of water is smooth. And the purified water which flowed into the hollow fiber membrane storage part 7B is further purified by the hollow fiber membrane 7Q, and flows out as purified water from the upper end opening of the hollow fiber membrane storage part 7B. This purified water passes through the outlet 18A of the purified water and the outlet 18B formed through the side wall of the cap 14 correspondingly. It enters the water discharge pipe part 20 and discharges water from the water discharge port 21.

  With such a configuration, in the activated carbon storage configuration in which a large number of openings formed in the peripheral wall of the plastic cylindrical case are closed with a filter as in the past, as described above, the activated carbon filling is achieved by downsizing the cylindrical case. Although the amount is reduced and the purification effect is reduced, in the present invention, the cylindrical hollow body 7H of the water-permeable nonwoven fabric itself is a container for storing the activated carbon 7P, and therefore, compared with the above-described conventional form having the same outer diameter. The amount of activated carbon can be increased, which is suitable for downsizing with an excellent purification effect. And it becomes a thing suitable for the type accommodated in the faucet 1 in the state where the lower part of the water purification cartridge 7 dives under the upper wall etc. of the sink 5 which is a faucet installation surface like an Example.

  The water discharge member 10 is arranged in a cover 24 in which a discharge pipe portion 20 that guides purified water is made of a synthetic resin or a metal such as stainless steel and formed into a flat pipe shape. The cover 24 is for improving the appearance design of the water discharge pipe portion of the faucet 1, but the discharge pipe portion 20 may simply form the water discharge member 10.

  A control operation unit 25 of the electromagnetic valve 4 that opens and closes the water supply water supply path 3 supplied to the water purification cartridge 7 is provided on the upper surface of the distal end portion of the water discharge member 10. The control operation unit 25 includes an opening / closing operation switch 25 </ b> A of the electromagnetic valve 4, and the switch 25 </ b> A is housed in the cover 24 of the water discharge member 10. The upper surface of the switch 25A forms a manual operation surface covered with a flexible synthetic resin film 25D. As a result, the control operation unit 25 is positioned closer to the front side than the faucet body 11, so that the operation becomes easy.

  Further, the control operation unit 25 is provided with a display panel 25C on the lower side of the film 25D, and displays the replacement time of the water purification cartridge 7 by the display panel 25C. The display method includes a method of displaying the replacement time by date and a method of displaying the replacement time by color. In the embodiment, it is the latter method, and when a new water purification cartridge 7 is attached, the light of the blue (blue) light emitting diode (LED) of the display panel 25C can be visually observed through the film 25D, and if it is time to replace it, The display is configured such that light from a red (red) light emitting diode (LED) can be visually observed.

  In order to reduce the size of the faucet 1 and to reduce the size of the water discharge member 10, the control unit 51 connected to the solenoid valve 4, the switch 25 </ b> A and the display panel 25 </ b> C is provided at a location separated from the faucet 1. It has been. As an embodiment thereof, it is housed in a control box 51A attached to the side wall of the space of the sink 5 below the sink 15, and is waterproof. In addition, you may make it accommodate the control part 51 in this cover 4A by making synthetic resin cover 4A for protecting the solenoid part of the solenoid valve 4 into a large cover structure like a figure.

  The switch 25A, the display panel 25C, and the control unit 51 are connected via lead wires 52 and 52A, and the solenoid valve 4 and the control unit 51 are connected via a lead wire 52B. The lead wire 52 wired in the cover 24 is a flexible printed circuit having a structure in which an electric circuit is printed on the surface of a flexible synthetic resin belt-like sheet. The flexible printed circuit 52 extending from the control operation unit 25 is a pipe. Along the portion 20, it extends from the cover 24 to the space 11 </ b> B in the faucet body 11 protruding above the upper wall 6. The flexible printed circuit 52 is connected to a lead wire 52A made of silicon rubber or the like in the space 11B. The lead wire 52A extends from the stepped portion 11C to the portion of the screw portion 23 formed on the outer peripheral surface of the small diameter storage portion 16A. By passing through the groove 53 formed in the vertical direction, it extends from the attachment hole 12 to the space 50 along the groove on the outer surface of the water purification cartridge storage portion 16A without interfering with the tightening of the attachment nut 13, and is connected to the control portion 51. Has been.

  The power source of the solenoid valve 4, the switch 25A, the display panel 25C, and the control unit 51 is not a dry battery but a commercial power source. In the embodiment, 100 V of the commercial power source is connected to the power source unit provided in the control unit 51. It is configured to be supplied and converted to a necessary control voltage in the power supply unit. For this reason, the control operation unit 25 including the switch 25A is supplied with a DC low voltage that is not dangerous to the human body. As described above, since the dry battery is not configured to be housed in the faucet body 11 or the water discharge member 10, the water faucet 1 is suitable for downsizing, and there is no problem of dry battery power outage and stable water supply operation. Is obtained.

  In a state where the water purification cartridge 7 is housed in the faucet 1, the switch 51 </ b> A is pushed with a finger from the upper surface of the film 25 </ b> D to operate the control unit 51 to turn on the electromagnetic valve 4 to open the water supply path 3. Enters the water purification cartridge 7 from the water supply channel 3 and is purified, and the purified water is discharged from the water outlet 21 through the pipe portion 20. When the switch 25A is pushed again with the finger from the upper surface of the film 25D, the control unit 51 is operated, the electromagnetic valve 4 is turned off, the water supply path 3 is closed, and water discharge from the water discharge port 21 is stopped. In this way, the electromagnetic valve 4 is turned ON / OFF by the push / push of the switch 25A, and the removal of purified water from the faucet 1 is controlled.

  Here, when the new water purification cartridge 7 is stored in the faucet 1, the counter unit of the control unit 51 can be reset by pressing the reset switch with a finger to turn it ON. The reset switch can be easily operated by being provided in the control operation unit 25. Based on this reset, the operation of the control unit 51 causes the blue (blue) light emitting diode of the display panel 25C to emit light, and the blue (blue) display can be visually observed through the film 25D. In this state, the electromagnetic valve 4 is turned on as described above by the push of the switch 25A that is first operated, and the counter unit of the control unit 51 starts counting, and the electromagnetic valve 4 is turned off by the push of the switch 25A again. The counter unit of the control unit 51 is configured to stop counting. By doing in this way, since the ON time of the solenoid valve 4 is integrated | accumulated, the taking-out time of purified water will be integrated | accumulated. When this integrated count value reaches a predetermined count, the blue (blue) light-emitting diode is turned off, and the red (red) light-emitting diode is turned on to emit light, whereby a red (red) display is visually observed through the film 25D. it can. This red (red) display is an indication of the replacement time of the water purification cartridge 7.

  As described above, the faucet 1 is attached to the upper wall 6, which is the faucet attachment portion 2, so as to protrude upward, and the water purifying cartridge 7 is inserted into the faucet body 11 of the faucet 1 so as to penetrate the upper wall 6. The water purification cartridge 7 is held by the faucet body 11 so as to be detachable from above the upper wall 6. The faucet body 11 or the water discharge member 10 is provided with a switch 25A for opening / closing operation of the electromagnetic valve 4, and the upper part of the water purification cartridge storage part 16 protrudes upward from the upper wall 6, and the lower part of the water purification cartridge storage part 16 is The water purification cartridge 7 is attached to the space 50 behind the sink 15 below the wall 6 and is detachable from the upper surface of the water purification cartridge housing 16.

  Even in a situation where the diameter of the mounting hole 12 of the faucet mounting portion 2 is defined in order to make the faucet mounting common, the upper portion 16B of the water purification cartridge storage portion 16 can be made larger in diameter than the lower portion 16A. In the water purification cartridge 7, the hollow fiber membrane storage portion 7B can have a larger diameter than the water purification filter 7A, and a sufficient purification region can be obtained by suppressing the height of the purification region by the hollow fiber membrane 7Q. For example, the portion 7B filled with the hollow fiber membrane 7Q can be sufficiently purified by a method such as storing the hollow fiber membrane 7Q in a U-shape. The effect can be sufficiently exhibited. For this reason, in order to make the mounting of the faucet 1 common, the height of the faucet 1 can be reduced even in a situation where the diameter of the mounting hole 12 of the faucet mounting portion 2 is prescribed, and the water purifying cartridge 7 It becomes a device that can ensure the desired purification capacity.

  Further, the faucet 1 can be mounted effectively using the space 50 behind the sink 15, and the protruding height of the faucet 1 above the sink 5 can be kept low. Furthermore, since the water purification cartridge 7 can be replaced from the upper surface side of the sink 5, the replacement work is easy.

  And, the upper end of the water purification cartridge housing 16 is opened, and this opening can be opened and closed by the cap 14. The water purification cartridge 7 can be attached to and detached from the water purification cartridge housing 16 together with the attachment and detachment of the cap 14. It becomes easy to exchange.

  Further, the water purification cartridge 7 includes a cylindrical small diameter lower water purification filter 7A in which spherical activated carbon 7P is accommodated, and a cylindrical large diameter upper hollow fiber membrane accommodation portion 7B in which a hollow fiber membrane 7Q is accommodated above. And is long in the vertical direction. If the distance between the faucet 1 and other items such as a shelf provided above the faucet 1 is small due to the installation situation of the sink equipped with the faucet 1, the water purification cartridge 7 is replaced when the long water purification cartridge 7 is replaced. There may be cases where it is difficult to perform the work of exchanging it upwards, or when it is not possible to exchange it. In order to cope with this, as described above, if the lower end of the hollow fiber membrane storage portion 7B and the upper end of the water purification filter 7A are detachably coupled by screw coupling, the cap 14 is removed. With the water purification cartridge 7 lifted up, the hollow fiber membrane storage portion 7B and the water purification filter 7A are taken out separately by removing the hollow fiber membrane storage portion 7B from the water purification filter 7A. Can do.

  In addition, when the new water purification cartridge 7 is mounted, the water purification filter 7A is first inserted into the water purification cartridge storage portion 16 in a state where the water purification filter 7A and the hollow fiber membrane storage portion 7B are disassembled by the screw portion. The hollow fiber membrane storage part 7B can be screw-coupled to the water purification filter 7A, the water purification cartridge 7 is assembled, this is stored in the water purification cartridge storage part 16, and the cap 14 can be attached.

  The present invention is not limited to the above-described embodiment in terms of the configuration of the faucet or other parts, and various modifications can be considered without departing from the technical scope of the present invention, and various modifications relating thereto are included. Is.

It is a general view which shows the internal structure of the water purification cartridge provided with the water purification filter which concerns on this invention in a half section. Example 1 It is sectional drawing of the cylindrical main-body part of the hollow fiber membrane accommodating part of the water purification cartridge which concerns on this invention. Example 1 It is an upper side view of the cylindrical main-body part of a hollow fiber membrane storage part. Example 1 It is a lower side view of the cylindrical main-body part of a hollow fiber membrane accommodating part. Example 1 It is sectional drawing of the cover part of the hollow fiber membrane storage part of a water purification cartridge. Example 1 It is an upper side view of the cover part of a hollow fiber membrane storage part. Example 1 It is a lower side view of the cover part of a hollow fiber membrane storage part. Example 1 It is sectional drawing of the water purification filter which concerns on this invention. Example 1 It is sectional drawing of the cylindrical hollow body of the water-permeable nonwoven fabric which forms the activated carbon accommodating part of the water purifying filter which concerns on this invention. Example 1 It is a side view of the sealing material fitted in the one end part of the cylindrical hollow body of FIG. Example 1 It is a top view of the sealing material of FIG. Example 1 It is a bottom view of the sealing material of FIG. Example 1 It is sectional drawing of the inner cylinder body of the water-permeable nonwoven fabric arrange | positioned in the cylinder body of FIG. Example 1 FIG. 14 is a side view of a support member that fits at one end of the inner cylinder of FIG. 13. Example 1 It is a top view of the supporting member of FIG. Example 1 It is a bottom view of the supporting member of FIG. Example 1 It is a side view of the sealing material fitted to the other end side of the cylindrical hollow body of FIG. Example 1 It is a top view of the sealing material of FIG. Example 1 It is a bottom view of the sealing material of FIG. Example 1 14 is a perspective view of an inner cylinder assembly in which the support member of FIG. 14 is coupled to the bottom of one end of the inner cylinder of FIG. 13 and the sealing material of FIG. 10 is coupled to the upper end. Example 1 It is the perspective view which made the bottom part of the activated carbon storage cylinder part formed by combining the assembly of the inner cylinder of FIG. 20 in the cylindrical hollow body of FIG. Example 1 It is a top view of the one end opening part of a cylindrical assembly. Example 1 It is sectional drawing of the state which filled the activated carbon in the activated carbon filling part of the cylindrical assembly. Example 1 It is sectional drawing of the water purification filter completed by couple | bonding the sealing material of FIG. 17 with the other end side of the cylindrical assembly body which put the activated carbon of FIG. Example 1 It is a perspective view of a metal stick and a water-permeable nonwoven fabric. Example 1 It is a perspective view of the state which started winding a water-permeable nonwoven fabric around a metal bar. Example 1 It is a perspective view of the state in the middle of winding a water-permeable nonwoven fabric around a metal stick. Example 1 It is a perspective view of the state where winding a water-permeable nonwoven fabric around a metal bar and cutting. Example 1 It is a perspective view of the state where the edge part of the water-permeable nonwoven fabric wound around the metal rod was taped. Example 1 It is a perspective view in the state where a metal rod is extracted from a rigid tubular body of nonwoven fabric formed by heating. Example 1 It is a perspective view which shows the operation | work which arranges the length of the rigid cylinder of a nonwoven fabric. Example 1 It is an enlarged view of the nonwoven fabric explaining the state which the fibrous part welded by heating. Example 1 It is an enlarged view of the nonwoven fabric explaining the state in which the smooth surface was formed in the fibrous part contact | abutted with a metal rod by heating. Example 1 It is a front view explaining the state equipped with the water purification cartridge provided with the water purification filter which concerns on this invention in the sink. Example 1 It is a vertical side view explaining the state provided with the water purification cartridge provided with the water purification filter which concerns on this invention in the sink. Example 1

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Water faucet 2 ... Water faucet attachment part 3 ... Water supply path 3A ... Water feed pipe 4 ... Solenoid valve 5 ... Sink 6 ... Upper wall of a sink 7 ... Water purification cartridge 7A ・ ・ Water purification filter 7B ・ ・ Hollow fiber membrane storage part of water purification cartridge 7H ・ ・ Cylindrical hollow body (outer cylindrical body)
7G... Inner cylinder 7G1 .. Assembly of inner cylinder 7G 7G2... Hollow passage inside inner cylinder 7G 7M... Cylindrical assembly 7P ... Spherical activated carbon 7Q ... Hollow fiber membrane 10 ... Discharge member 11 ... Water faucet body 11C ... Step part 12 ... Water faucet mounting hole 13 ... Mounting nut 14 ... Cap 15 ... Sink 16 ... Water purification cartridge storage 16A・ ・ Small-diameter storage part 16B ・ ・ Large-diameter storage part 17 ... Water inlet part 18 ... Water outlet part 20 ... Discharge pipe part 21 ... Discharge port 24 ... Cover 25 ... Control operation part 28 ... annular space 50 ... space 51 ... control part 62 ... synthetic resin sealing material 63 ... synthetic resin support member 65 ... synthetic resin sealing material 70A ... Fibrous part 70B..Abutting part 70 of fibrous parts 70 ... smooth surface 80 ... activated carbon filling space

Claims (2)

  A thin non-woven fabric made of olefin or the like having a predetermined width and length made by a spunbond method or the like is applied to a metal bar (including a hollow pipe or a simple bar form) having a smooth outer surface several times. After the wound material is put into a heating furnace and the nonwoven fabric is heated to a semi-molten state to weld the contact portions between the fibrous portions of the nonwoven fabric and form a smooth surface on the contact surface with the metal rod The manufacturing method of the self-supporting cylindrical hollow body for water purification filters which accommodates the activated carbon of a spherical fine particle by pulling out the said metal rod from the cylindrical body of the nonwoven fabric formed by cooling.   A thin non-woven fabric made of olefin or the like having a predetermined width and length made by a spunbond method or the like is applied to a metal bar (including a hollow pipe or a simple bar form) having a smooth outer surface several times. After the wound material is put into a heating furnace and the nonwoven fabric is heated to a semi-molten state to weld the contact portions between the fibrous portions of the nonwoven fabric and form a smooth surface on the contact surface with the metal rod The self-supporting cylindrical hollow body is manufactured by pulling out the metal rod from the non-woven tubular body formed by cooling, and is self-supporting having a smaller diameter than the cylindrical hollow body by the same method as the cylindrical hollow body. An inner cylinder is manufactured, and the inner cylinder is disposed in the cylindrical hollow body, and an annular space between the cylindrical hollow body and the inner cylinder is filled with activated carbon of spherical fine particles to form an activated carbon layer. A method for producing a water purification filter, characterized by comprising:

Images