WO2011078036A1

WO2011078036A1 - Water purification cartridge, water purification apparatus, and sink

Info

Publication number: WO2011078036A1
Application number: PCT/JP2010/072585
Authority: WO
Inventors: 浩一中西; 和也小早川; 高志江原; 政志廣瀬
Original assignee: パナソニック電工株式会社
Priority date: 2009-12-24
Filing date: 2010-12-15
Publication date: 2011-06-30
Also published as: TW201200227A; CN102695677A; JP2011131161A; JP5320279B2; KR20120123268A; TWI388370B

Abstract

Disclosed is a water purification cartridge (1), a water purification cartridge (1) provided in a water purification apparatus (44), or a water purification cartridge (1) provided in a water purification apparatus (44) equipped in a sink (40), that is equipped with shaped activated carbon (4) and a sealing cap (10). The shaped activated carbon (4) is formed in a hollow cylindrical shape as a filter material and has an opening on both end surfaces. The sealing cap (10) seals the space (5) in the inner circumference of the shaped activated carbon (4) by covering the opening on the first end surface (8) of the shaped activated carbon (4). In addition, the sealing cap (10) is provided with a cylindrical closing part (12) that closes off the inner surface (7) at a prescribed dimension from the opening on the first end surface (8) of the shaped activated carbon (4), thereby preventing the inflow of water from the closed off inner surface (7). With this configuration, it is possible to maintain the ability to filter residual chlorine even if water is run into the shaped active carbon (4) from at least the outer surface (6) and the first end surface (8) of the shaped activated carbon (4).

Description

Water purification cartridge, water purification device and sink

The present invention relates to a water purification cartridge having a water purification cartridge and a water purification cartridge, and a sink equipped with the water purification device.

Conventionally, a sink includes a curan that discharges raw water such as tap water and well water, and a water purifier that generates and discharges purified water by removing impurities contained in the raw water such as odor of lime, trihalomethane, organic matter, and fine particles. Prepare. The sink includes a type that discharges water from each of the curan and the water purifier, and a water purifier disposed between the water supply pipe that supplies the raw water to the caran and the curan so that the water discharged from the curan is discharged from the raw water and the purified water. There are types that can be selected and switched from among them. Both the raw water and the purified water can be obtained directly in the type that discharges water with each of Karan and the water purification device. On the other hand, in the type in which raw water and purified water are selected and discharged from one curan, a simple structure with one discharge portion can be achieved.

The water purification apparatus includes a filtration unit having a filter medium that filters and purifies raw water, and generates purified water by filtering and removing impurities contained in the raw water supplied to the filtration unit. For example, the filtration part is composed of an activated carbon adsorption part made of activated carbon that adsorbs a caustic odor causative substance, trihalomethane, etc., and a hollow fiber membrane module made of a hollow fiber membrane that removes bacteria and fine particles that cannot be removed by activated carbon. Has been. And the activated carbon adsorption part and the hollow fiber membrane module are made into the water purification cartridge which can be attached or detached integrally from the filtration part. By replacing the water purification cartridge with a new one every certain period such as several months, the accumulated impurities are discharged to the outside, and the deterioration of the filtration performance due to the adhesion of impurities is eliminated.

However, since the replacement of the water purification cartridge is troublesome, a long-life water purification cartridge that requires as few replacement operations as possible is desired. Therefore, by increasing the surface area of the upper circulating water portion into which the water of the filter medium flows, it is difficult to cause a decrease in filtration performance due to clogging, and the number of replacement of the water purification cartridge is reduced. For example, as in Japanese Patent Publication No. 2006-15199, a molded activated carbon molded into a cylindrical shape is used as a filter medium, and the outer circumferential surface of the molded activated carbon is used as an upper circulating water section, and the inner circumferential space of the molded activated carbon is distributed downward. As a water part, there exists what expanded the surface area of the upper distribution | circulation water part. One of the openings in the space is sealed by an end cap, and the other is connected to a connection port of the partition plate. And the water purification cartridge is supplying the hollow fiber membrane module with the filtered water filtered with activated carbon only from the said connection port.

Here, when water flows into the formed activated carbon from the end face instead of the outer peripheral face of the cylinder, a short circuit is caused to reach the inner peripheral face before impurities are sufficiently removed, and the impurity removal rate in the purified water is lowered. Therefore, in the above-mentioned prior literature, the disc-shaped flat portion (sealing portion) of the end cap and the annular plate surface (main body plate) of the partition plate are formed with outer dimensions that are substantially the same as or slightly larger than the outer diameter of the molded activated carbon. At the same time, a sealing material such as a molten resin is interposed on the annular end surface of the cylinder so as to be liquid-tight, thereby preventing the inflow of water from the end surface.

However, as described above, to increase the life of the water purification cartridge, it is necessary to increase the surface area of the molded activated carbon, but in the conventional case, the surface area is increased only by increasing the outer diameter and axial dimension of the cylinder. There is a problem that the water purification cartridge becomes large. And if a water purification cartridge enlarges, in addition to the increase in manufacturing cost, it will become easy to contact external components, such as a water purifier and a sink, at the time of replacement | exchange or conveyance. And the trouble of damage, a crack, etc. may arise by the impact of such a contact, and there also exists a problem of reducing the usability of a water purifier or a sink.

Accordingly, an object of the present invention is to provide a purification cartridge having a long life without increasing the shape of the activated carbon adsorption portion, and also to provide a water purification apparatus and a sink that are improved in usability by the water purification cartridge.

The water purification cartridge of the present invention comprises a molded activated carbon that is formed in a hollow cylindrical shape as a filter medium and has openings at both end faces, and a sealing cap that closes the opening of the first end face of the shaped activated carbon, and has the following configuration. It is a feature. The shaped activated carbon allows water to flow in at least from the outer peripheral surface and the first end surface, and causes filtered water to flow out from the inner peripheral surface to the inner peripheral space. The space is sealed with the sealing cap, and the sealing cap has a cylindrical closing portion protruding from the opening of the first end surface into the space. Further, the closing portion closes the inner peripheral surface of the molded activated carbon by a predetermined size from the opening of the first end surface, thereby preventing water from flowing out from the closed inner peripheral surface into the space.

In this configuration, in addition to the outer peripheral surface of the molded activated carbon, the first end surface also serves as an upper circulating water section for allowing water to flow into the molded activated carbon, and the upper circulating water section is increased to two sides to prevent an increase in the size of the molded activated carbon. However, the surface area of the upper circulating water part can be increased. And since a closing part prevents the outflow of the water from the inner peripheral surface between the opening of a 1st end surface to a predetermined dimension, the water which flowed in from the 1st end surface is discharged from an inner peripheral surface. The shortest distance can be longer than the distance at which impurities can be sufficiently removed, and a short circuit can be prevented from occurring in the flow path in the molded activated carbon. Therefore, it is possible to suppress a decrease in filtration performance due to clogging without causing a short circuit, to extend the life of the water purification cartridge, and to reduce the number of replacement operations accompanying the life.

In one embodiment, the sealing cap includes a sealing portion that is formed in a disk shape and closes the opening of the first end surface. The outer diameter of the sealing portion is set larger than the inner diameter of the opening of the first end surface and smaller than the outer diameter of the first end surface.

In this configuration, the molded activated carbon can easily allow water to flow from the surface not covered by the sealing portion of the first end surface.

In one embodiment, a gap is formed between the first end face and the sealing portion to allow water to enter.

In this configuration, the molded activated carbon can allow water to flow not only from the surface not covered by the sealing portion of the first end surface, but also from the surface covered by the sealing portion, that is, the opening Water can be allowed to flow from the entire surface of the first end surface except for the above.

In one embodiment, the sealing cap is fixed to the molded activated carbon by pressing the closing portion into the inner periphery of the molded activated carbon from the opening of the first end face.

In this configuration, it can be fixed without using an adhesive or a sealant, and the production becomes easy.

In one embodiment, the dimension obtained by subtracting the inner peripheral radius from the outer peripheral radius of the molded activated carbon is T, and the predetermined dimension that the closing portion is closed is D. The dimensional ratio of the molded activated carbon to the closing portion is 0.5 <. The relationship is T / D <2.5.

In this configuration, when the dimensional ratio T / D is within the above range, the free residual chlorine can be reliably removed, and the reduction of the filtration capacity of the free residual chlorine due to the closed portion is prevented. In one embodiment, a decrease in the amount of filtered water generated can be suppressed and stable filtration performance can be ensured. In one embodiment, a partition is formed on the opening side of the second end surface opposite to the first end surface of the molded activated carbon. Provide a plate. The partition plate includes a main body plate provided with a connection port communicating with the opening of the second end surface, and a cylindrical shape that extends from the main body plate to the space and extends through the inner periphery of the connection port. And an attachment portion. And the said partition plate is attached to the said molded activated carbon via the said attachment part, and the said molded activated carbon enters in the said molded activated carbon not only from the said outer peripheral surface and the said 1st end surface but from the said 2nd end surface. Allow water to flow in. The mounting portion closes the inner peripheral surface of the molded activated carbon by a predetermined dimension from the opening of the second end surface, and prevents water from flowing out from the closed inner peripheral surface into the space.

In this configuration, the partition plate is attached to the formed activated carbon via the attachment portion, so that the second end surface of the formed activated carbon also becomes the upper circulation water portion, and the area of the upper circulation water portion can be further increased. For example, when the closing part of the sealing cap is the first closing part, the attaching part functions as the second closing part, and the attaching part is located between the opening of the second end surface and the predetermined dimension. In order to prevent the outflow of water from the peripheral surface, a short circuit of the water flowing in from the second end surface can be prevented. As a result, the lifetime of the water purification cartridge can be extended.

In one embodiment, a circular pipe member that connects the closing part and the attachment part in the axial direction is provided, and the circular pipe member has a plurality of water inlets on a peripheral surface.

In this configuration, the sealing tube can be reinforced in the axial direction by arranging and connecting the circular pipe member between the closing portion and the mounting portion, and even if an impact is applied to the water purification cartridge, the sealing cap is dropped or dropped. The occurrence of problems such as these can be prevented.

In one embodiment, the sealing cap has a knob, and the knob includes an insertion hole for inserting a removal jig.

In this configuration, the user can hold the water purification cartridge via the knob, and can perform attachment / detachment operations such as replacement of the water purification cartridge without directly touching the filter medium. Therefore, when attaching a new water purification cartridge, it can prevent that impurities, such as finger oil, adhere to the new filter medium which has not adhered impurities. On the other hand, when removing an old water purification cartridge, it is possible to avoid touching impurities adhering to the filter medium and improve hygiene. Further, by inserting the removal jig through the insertion hole and removing it, it is possible to prevent the finger or the like from slipping and dropping the water purification cartridge with water or the like adhering to the knob, and can be replaced safely.

In one embodiment, the water purifier includes a filtering unit that filters impurities in the raw water, and the filtering unit is detachably equipped with the water purification cartridge described above.

In this configuration, the water purification apparatus is provided with the above-described water purification cartridge in the filtration means so that the filtration performance is reduced by replacing the water purification cartridge when the filtration performance deteriorates due to impurities accumulated by filtration. It can be easily solved. And by using a long-life water purification cartridge, the frequency | count of the troublesome replacement | exchange operation | work of a water purification cartridge can be reduced, and usability can be improved.

In one embodiment, the sink is equipped with a purified water generating means for generating purified water and is capable of discharging purified water generated by the purified water generating means, and uses the above-described water purifier as the purified water generating means.

In this configuration, the sink can use the purified water generated by the water purification device, and can easily eliminate the decrease in filtration performance simply by replacing the water purification cartridge provided in the water purification device when the filtration performance decreases. it can. And since the water purifier uses a long-life water purification cartridge, the frequency | count of exchange work is reduced and usability can be improved.

Preferred embodiments of the invention are described in further detail. Other features and advantages of the present invention will be better understood with reference to the following detailed description and accompanying drawings.
It is sectional drawing of an example of embodiment of the water purification cartridge of this invention. It is a test result of a free residual chlorine removal test. It is a test result of a free residual chlorine removal test. It is sectional drawing which a part of other example of embodiment of the water purification cartridge of this invention abbreviate | omitted. It is sectional drawing which a part of modification of embodiment of the water purification cartridge of this invention abbreviate | omitted. It is sectional drawing to which the principal part of the example which has the knob | pick part in the sealing cap of embodiment of the water purification cartridge of this invention was expanded. It is sectional drawing explaining typically an example of embodiment of the water purifier of this invention. It is a side view which illustrates typically an example of an embodiment of a sink of the present invention.

Hereinafter, each embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 7, a sink 40 according to an embodiment of the present invention introduces raw water such as tap water and well water supplied from a water supply pipe 41 to a currant 43 and a water purifier 44 by a water channel switching valve 42. The purified water generated by the raw water and the purified water device 44 can be discharged respectively. As shown in FIG. 6, the water purifier 44 includes a filtering unit 45 that filters impurities from raw water supplied from the water supply pipe 41 to generate purified water, and a water discharge pipe 49 that discharges purified water generated by the filtering unit 45. ,have.

The filtration unit 45 includes an exterior 46 having a water supply communication hole 47 communicating with the water supply pipe 41 and a water discharge communication hole 48 communicating with the water discharge pipe 49, a water purification cartridge 1 detachably provided inside the exterior 46, Is provided. The water purification cartridge 1 has two types of filter media. That is, the raw water supplied from the water supply pipe 41 is sequentially filtered by the two filter media of the water purification cartridge 1 to remove impurities from the raw water to generate purified water, which is supplied to the water discharge pipe 49.

As shown in FIG. 1, the water purification cartridge 1 is hollow with an activated carbon adsorbing portion 2 using a molded activated carbon 4 formed into a hollow cylindrical shape as a filter medium and a hollow fiber membrane 23 bundled with a plurality of porous hollow fibers as a filter medium. A yarn membrane module 3. The activated carbon adsorbing part 2 and the hollow fiber membrane module 3 are attached so as to be integrated with each other through a partition plate 13, and after raw water is filtered by the activated carbon adsorbing part 2, it is further filtered by the hollow fiber membrane module 3 to generate purified water. . In other words, the water purification cartridge 1 is detachably attached to the filtration unit 45 in a state where the activated carbon adsorbing unit 2 is disposed on the upstream side of the raw water and the hollow fiber membrane module 3 is disposed on the downstream side of the purified water supplied to the water discharge pipe 49. It is attached with.

Further, the activated carbon adsorbing portion 2 includes the above-described molded activated carbon 4 in which both ends in the axial direction C are annular planes, and a sealing cap 10. The sealing cap 10 is attached to one end side of the molded activated carbon 4 and seals the cylindrical space 5 formed on the inner periphery of the molded activated carbon 4 by closing the opening on the one end side of the molded activated carbon 4. A partition plate 13 having an annular plate surface of the same size is attached to the other end side of the molded activated carbon 4, and an opening located at the approximate center of the partition plate 13 is in the space 5 on the inner periphery of the molded activated carbon 4. Communicate.

Therefore, the water (raw water) flowing outside the molded activated carbon 4 and the water (filtered water) flowing in the inner space 5 of the molded activated carbon 4 are partitioned by the sealing cap 10 and the partition plate 13. In order for water to flow to 5, it always passes through the molded activated carbon 4. That is, the raw water flows from the surface other than the inner peripheral surface 7 of the molded activated carbon 4 into the molded activated carbon 4 and is filtered, and then flows out into the space 5 on the inner periphery of the molded activated carbon 4. To the hollow fiber membrane module 3 through the opening of the partition plate 13.

More specifically, the sealing cap 10 is sealed with a disk-shaped sealing portion 11 for sealing the opening on one end side of the molded activated carbon 4 and a size slightly larger than or substantially the same as the opening (inner circumference) of the molded activated carbon 4. And a cylindrical closing portion 12 protruding concentrically from the plate surface of the stopper portion 11. That is, the sealing cap 10 is attached to the molded activated carbon 4 by press-fitting the closing portion 12 into the inner periphery of the molded activated carbon 4. And the sealing part 11 seals only the opening of the one end side of the shaping | molding activated carbon 4, and raw | natural water is from the end surface 8 (below called the 1st end surface 8) on the one end side of the shaping | molding activated carbon 4. Is also flowing into the molded activated carbon 4. Here, the outer diameter of the sealing portion 11 is set to be sufficiently smaller than the outer diameter of the molded activated carbon 4 although it is larger than the inner diameter of the molded activated carbon 4, as shown in FIG. The raw water can be easily introduced from the surface not covered with the sealing portion 11. Furthermore, in the present invention, the first end face 8 and the peripheral edge portion of the sealing portion 11 are not fixed by an adhesive or the like, and the sealing agent is not filled between them. A gap is formed between the end face 8 and the peripheral edge of the sealing portion 11 so as to allow water to enter. Therefore, in the first end face 8, the raw water can flow from not only the face not covered by the peripheral edge of the sealing part 11 but also the covered face. Furthermore, since the outer peripheral surface of the closed portion 12 is in pressure contact with the inner peripheral surface 7 of the molded activated carbon 4, the press contact surface 7 a of the inner peripheral surface 7 is closed by the closed portion 12, so that water can enter the space 5 from the press contact surface 7 a. Prevents outflow.

The closing portion 12 of the present invention protrudes in a cylindrical shape, unlike the simple four legs provided on the above-described end cap of the above-mentioned prior art and having a minimum length so as not to prevent water flow. Is.

Therefore, the raw water that has flowed into the molded activated carbon 4 from the first end face 8 can no longer flow into the space 5 to the tip that protrudes to the inner peripheral side of the closed portion 12, and flows into the space 5 from the first end face 8. A flow distance is ensured to reliably remove chlorine in the raw water. In addition, the sealing part 11 can be used as positioning when the sealing cap 10 is attached by making the outer diameter dimension larger than the inner diameter of the opening of the first end face 8. Of course, the method of fixing the closing part 12 to the molded activated carbon 4 is not limited to press-contacting by press-fitting, and the closing part 12 and the molded activated carbon 4 are closed by adhering the closing part 12 and the molded activated carbon 4 with an adhesive member such as an adhesive. Between them, a sealing member such as a molten resin may be interposed and fixed and closed.

In addition, the sealing cap 10 has a dimension D in the axial direction C of the closing portion 12 that is approximately half the radial dimension T of the molded activated carbon 4 in which the inner radius R1 is subtracted from the outer radius R2 of the molded activated carbon 4. It is preferable that it is within the double range.

Here, the test was performed based on the free residual chlorine removal performance test of the JIS standard S3201 household water purifier test method. As test conditions, water having a free residual chlorine concentration of 2.00 mg / L was used as test water, and the filtration flow rate that was the flow rate of water supplied to the filter medium was 2.0 L / min. The activated carbon which is a filter medium is a molded activated carbon 4 molded into a cylindrical shape having an outer diameter (diameter) of 28.5 mm, an inner diameter (diameter) of 8.5 mm, and a total length (dimension in the axial direction C) of 62 mm. In the test, five types of closures 12 each having a dimension D of 4 mm, 5 mm, 8 mm, 10 mm, and 20 mm were used. When raw water is passed from only the outer peripheral surface 6 of the molded activated carbon 4 toward the inner peripheral surface 7 under the above conditions, the free residual chlorine removal rate of the molded activated carbon 4 shows 100%.

The results of the test are as shown in FIGS. 2A and 2B, FIG. 2A is a table of the measurement results of free residual chlorine concentration for each dimensional ratio T / D, and FIG. 2B shows the free residual chlorine removal rate on the vertical axis. The dimension ratio T / D is taken on the horizontal axis, and each dimension ratio T / D is connected by a line.

As shown in the test results, when the dimension D of the closing portion 12 is 4 mm, chlorine remains in the clean water, and chlorine removal is insufficient. This is because the shortest distance from the first end surface 8 (the flat surface on one end side) of the molded activated carbon 4 to the inner peripheral surface 7 not closed by the closing portion 12 is short, and a short circuit occurred. In the case where the dimension D of the closing portion 12 is 20 mm, the shortest distance is increased, so that the water flow resistance in the molded activated carbon 4 is increased, the flow velocity in the activated carbon is remarkably attenuated, and the inner space 5 It was found that the amount of purified water flowing out of the water decreased (the amount of purified water not shown).

In other words, when T / D ≧ 2.5, the shortest distance is too short and the water flow resistance is low, and the filtration ability to remove chlorine is lowered. When T / D ≦ 0.5, the shortest distance is too long and the water flow resistance is low. Water resistance increases and the amount of purified water decreases. For this reason, the sealing cap 10 has a dimensional ratio T / D between the molded activated carbon 4 and the closing portion 12 within the range of 0.5 to 2.5. It is possible to stably remove chlorine in the raw water by preventing a decrease in performance.

The partition plate 13 is formed of an annular plate having substantially the same outer diameter as the end surface 9 on the other side of the molded activated carbon 4 (that is, the other end surface, hereinafter referred to as the second end surface 9). A body plate 14 is provided. The opening located at the approximate center of the main body plate 14 is a connection port 15 for supplying the filtered water filtered by the activated carbon adsorption unit 2 to the hollow fiber membrane module 3. One surface of the main body plate 14 is a contact surface that faces and contacts the second end surface 9 of the molded activated carbon 4, and the contact surface has substantially the same shape as the closing portion 12 of the sealing cap 10. A mounting portion 16 formed in a cylindrical shape protrudes toward the inner periphery of the molded activated carbon 4.

That is, the attachment portion 16 is pressed against the inner peripheral surface 7 of the molded activated carbon 4 in the same manner as the closing portion 12 of the sealing cap 10, and the inner peripheral surface 7 of the molded activated carbon 4 is circumferentially connected from the second end surface 9 side. The second closing portion closes the dimension D ′ in the axial direction C of the surface. Therefore, the partition plate 13 is attached to the molded activated carbon 4 through press-fitting of the attachment portion 16, and the second end face 9 and the partition plate 13 are not fixed by an adhesive or the like, and the second A gap is formed between the end face 9 and the partition plate 13 so that water can enter. Then, the inner peripheral surface 7 on the second end surface 9 side is also closed by the mounting portion 16 in the same manner as the inner peripheral surface 7 on the first end surface 8 side in which the closing portion 12 is pressed, and the raw water is formed into the activated carbon 4. It is possible to flow into the molded activated carbon 4 not only from the outer peripheral surface 6 and the first end surface 8 but also from the second end surface 9.

Thus, the activated carbon adsorption part 2 of this example is located between the closing part 12 and the attachment part 16 after flowing raw water into the molded activated carbon 4 from the outer peripheral surface 6 and the first and second end faces 8 and 9. The filtered water flows out into the space 5 from the inner peripheral surface 7 that is not closed. Then, the filtered water is supplied to the hollow fiber membrane module 3 through the connection port 15. The dimension D ′ in the axial direction C of the mounting portion 16 is set to a dimension between half and twice the thickness dimension T of the molded activated carbon 4 in the same manner as the range of the dimension ratio T / D of the closing portion 12 described above. It is preferable. Further, a plurality of concentric stepped portions (not shown) formed in the contact surface of the partition plate 13 are provided so that their axis centers coincide with the axis of the contact surface. Thus, a plurality of annular gaps are formed between the abutting surface and the second end surface 9 of the molded activated carbon 4 to reduce the resistance of the raw water entering between the two surfaces to the second end surface. The raw water may be easily flowed into 9.

The hollow fiber membrane module 3 includes a cylindrical frame 24 having a bottom with the back surface of the contact surface of the partition plate 13 as a bottom, and a hollow fiber membrane 23 disposed inside the frame 24. The hollow fiber membrane 23 is obtained by bundling a plurality of porous hollow fibers at the end. An opening end 25 formed by opening is provided at an end portion of the both ends of the frame body 24 located on the opposite side of the bottom portion. The opening of the opening end 25 is covered with a water collecting cap 26. And the hollow fiber membrane 23 is fixed to the opening end 25 in a state where the end portions of the fibers are arranged on the same plane, and the gap between each end portion and the opening end 25 is filled with the mold resin. ing.

The water collecting cap 26 includes a main body 28 made of an annular plate having substantially the same concentric diameter as the frame body 24, a fixing annular protrusion 29, and a cylindrical connecting pipe 31. The annular protrusion 29 is formed so as to protrude from the outer peripheral end of one surface facing the hollow fiber membrane 23 of the main body 28 toward the opening end 25. The connecting pipe 31 is disposed on the axial center of one surface opposite to the one surface of the main body 28 and communicates with a water collection space portion 27 described later. The annular protrusion 29 includes a joining portion 30 that joins the outer peripheral surface on the opening end 25 side of the frame body 24 at the tip in the axial direction C, and the water collecting cap 26 is fixed to the frame body 24 by joining the joining portion 30. Yes. Therefore, a water collection space portion 27 is formed between the main body 28 and the opening surface of the opening end 25 to collect the filtered water that has been filtered by the hollow fiber membrane 23 and becomes purified water, and the purified water in the water collection space portion 27 is The main body 28 is introduced into the connecting pipe 31 through an opening at the substantially center.

The connecting pipe 31 protrudes outward from the main body 28 in the axial direction C, and a sealing member 32 made of an elastic body such as an O-ring is provided on the outer periphery of the connecting pipe 31. When the connecting pipe 31 is inserted into the water discharge communicating hole 48 of the filtration unit 45, the seal member 32 is interposed between the connecting pipe 31 and the water discharging connecting hole 48, and as a result, sealing is performed. That is, only the purified water collected in the water collection space 27 is supplied to the water discharge pipe 49 through the connection pipe 31 and the water discharge communication hole 48, and the water purification cartridge 1 through the connection pipe 31 due to the elasticity of the seal member 32. Is detachably attached to the filtration unit 45.

Thus, by the sealing cap 10 provided with the closed portion 12, the first end surface 8 in addition to the outer peripheral surface 6 of the molded activated carbon 4 also serves as an upper flow water portion of the activated carbon adsorption portion 2, and only one surface of the molded activated carbon 4 is raised. The area of the upper circulating water section can be increased as compared with the circulating water section. And since the dimension ratio (T / D) with respect to the shaping | molding activated carbon 4 of the sealing cap 10 was set to 0.5 <T / D <2.5, while being able to prevent the fall of the filtration capability of a free residual chlorine, filtered water Can be prevented, and stable filtration performance can be ensured.

Therefore, it is possible to suppress a decrease in filtration performance without increasing the size of the molded activated carbon 4 and to extend the life of the activated carbon adsorption unit 2. In addition, the second end face 9 of the molded activated carbon 4 can also be an upper circulating water section by making the attachment part 16 of the partition plate 13 that partitions the activated carbon adsorption part 2 and the hollow fiber membrane module 3 a second closed part. The surface area of the circulating water portion is further increased, and the water purification cartridge 1 has a longer life. And since the activated carbon adsorption | suction part 2 which is arrange | positioned upstream and is easy to attach an impurity became long life, the frequency | count of replacement work by the lifetime of the activated carbon adsorption | suction part 2 can be reduced, and the usability of the water purification cartridge 1 is improved. Can do.

Further, along with the extension of the life of the water purification cartridge 1, the number of troublesome replacement operations of the water purification cartridge 1 can be reduced from the water purification device 44 using the water purification cartridge 1 in the filtration unit 45, which is a filtering means, thereby improving usability. it can. And the sink 40 which used the water purification apparatus 44 for the purified water production | generation means for purified water production | generation is also equipped with the purified water cartridge extended in life as a filter medium, the troublesomeness of the said exchange work is reduced, and it is convenient. Has improved.

Note that the sink 40 in the present invention is not limited to the one provided with the raw water currant 43 and the water purifier discharge section, and includes a water purifier 44 between the water supply pipe 41 of the built-in type water purifier or the like and the currant 43. The raw water and the purified water may be selected from the water and discharged. And the water purifier 44 in this invention is equipped with the electrolysis part which electrolyzes purified water, produces | generates alkaline or acidic electrolyzed water, and adds the material called mineral components, such as magnesium and calcium, to purified water. May be.

As an example of another embodiment of the water purification cartridge 1, a circular pipe member 17 is disposed between the closed portion 12 on the inner peripheral side of the molded activated carbon 4 and the mounting portion 16, and the circular pipe member 17 is attached to the closed portion 12. There is one in which the molded activated carbon 4 is reinforced by connecting the portions 16 together. In the present example, the description of the same configuration as the above example is omitted, and the hollow fiber membrane module 3 has substantially the same configuration as the above example, and therefore a part of the drawing corresponding to this example is omitted. .

Specifically, as shown in FIG. 3, the circular pipe member 17 is a lattice-shaped circular pipe having a plurality of water passages 18 penetrating in a rectangular shape from the outer periphery toward the inner periphery. The filtered water filtered by the molded activated carbon 4 flows into the space 5 through a plurality of water inlets 18. And the outer peripheral surface of the circular pipe member 17 contact | abuts to the internal peripheral surface 7 of the shaping | molding activated carbon 4, Thereby, the circular pipe member 17 reinforces the shaping | molding activated carbon 4 to the axial direction C and radial direction from the inner peripheral side. Furthermore, one end in the axial direction C of the circular pipe member 17 is joined to the end of the closing portion 12 by adhesion or welding with an adhesive or the like, and the other end is joined to the end of the mounting portion 16 by adhesion or the like. Therefore, the circular pipe member 17 connects and fixes the sealing cap 10 to the partition plate 13.

Therefore, even when the water purification cartridge 1 is exchanged or transported, it is prevented from being damaged or cracked even if the molded activated carbon 4 is exposed to an external impact such as contact with an external component 46 such as the exterior 46 of the filtration unit 45 or a sink. ing. And since the outer peripheral surface of the circular pipe member 17 does not close the inner peripheral surface 7 of the molded activated carbon 4, the filtration performance does not deteriorate, and the inflow of filtered water into the inner peripheral space 5 is substantially inhibited. It is something that does not.

In addition, since the sealing cap 10 and the partition plate 13 are connected and fixed, the impact of the sealing cap 10 from the molded activated carbon 4 is prevented from falling off or being shortened. Even when an impact along the axial direction C such as a water hammer due to a change in flowing water pressure is applied to the sealing cap 10, the sealing cap 10 falls into the space 5 or jumps out of the molded activated carbon 4 and falls off. It also prevents.

The circular pipe member 17 is not limited to the one having the water passage 18 penetrating in a rectangular shape as long as it can function as a reinforcing member, or the one having the water passage 18 penetrating in a circular shape or an elliptical shape, Alternatively, hexagonal openings and lattices arranged in a honeycomb shape may be used.

Further, the circular pipe member 17 may be formed integrally with one of the sealing cap 10 or the partition plate 13. Further, in the above description, the circular pipe member 17, the sealing cap 10, and the partition plate 13 are joined to each other by an adhesive or the like, but may be joined by engagement. For example, as shown in FIG. 4, the circular pipe member 17 and the partition plate 13 are formed by integral molding, and the circular pipe member 17 is an extended portion that extends from the attachment portion 16 toward the sealing cap 10. In this way, the attachment portion 16 and the circular pipe member 17 are connected. The circular pipe member 17 includes an engagement portion 19 at the distal end located on the sealing cap 10 side, and the closing portion 12 is engaged with the engagement portion 19 on the inner peripheral surface on the distal end side protruding into the space 5. The engaged portion 20 is provided. The closing portion 12 and the circular pipe member 17 are connected by the engagement between the engaging portion 19 and the engaged portion 29. That is, the joint location can be reduced by using integral molding instead of joining the two members, and by using engagement, it can be easily connected and fixed by adhesion, welding, or the like, and the assemblability of the water purification cartridge 1 can be improved.

Instead of providing the engaged portion 20, the engaging portion 19 is provided as an engaging claw having elasticity, and the engaging claw is hooked on the closing portion 12, so that the closing portion 12 and the circular tube member 17 may be connected and fixed. The engaged portion may be provided in the circular pipe member 17, and the engaging portion may be provided in the closing portion 12. Further, for example, a thread groove (not shown) is formed on the inner peripheral surface on the distal end side of the closing portion 12, and a screw thread (not shown) is formed on the outer peripheral surface on the distal end side of the circular tube member 17, The circular tube member 17 may be screwed into the closed portion 12 so that the closed portion 12 and the circular tube member 17 are connected and fixed. Furthermore, the attachment part 16 and the circular pipe member 17 may be joined by engagement, or the sealing cap 10 and the circular pipe member 17 may be integrally formed. Further, the sealing cap 10 does not include the closing portion 12 but includes only the sealing portion 11, and the circular tube member 17 has a front end flush with the first end surface 8. 4 is formed to be longer than the circular pipe member 17 illustrated in FIG. 4, and the outer peripheral surface on the front end side of the circular pipe member 17 is bonded to the inner peripheral surface 7 of the molded activated carbon 4 to seal the front end of the extended circular pipe member 17. The part 11 may be joined. That is, in this configuration, the extended portion of the circular pipe member 17 functions as the closing portion 12 of the sealing cap 10 described above. Of course, similarly, the partition plate 13 does not include the mounting portion 16 but includes only the main body plate 14, and the tip of the circular pipe member 17 extended so as to be flush with the second end surface 9 and the partition plate 13. The contact surfaces may be integrated by bonding. At this time, when the second end surface 9 of the molded activated carbon 4 is also used as the upper circulating water portion, the extended portion of the circular tube member 17 functions as the attachment portion 16.

Further, as shown in FIG. 5, the knob 21 is provided on the outer side in the axial direction C of the sealing portion 11 of the sealing cap 10, so that the operator can directly apply the molded activated carbon 4 when the water purification cartridge 1 is replaced. The water purification cartridge 1 can be attached and detached without touching. That is, when the new water purification cartridge 1 is attached, it is possible to prevent the operator's hand, pliers, etc. from touching the molded activated carbon 4 to attach the oils and fats of the hand or damage the molded activated carbon 4. And when removing the water purification cartridge 1 which became old, it can prevent that an operator's hand and pliers touch the impurity adhering to the shaping | molding activated carbon 4, and can improve a hygiene surface.

Furthermore, as shown in FIG. 5, the knob portion 21 has an insertion hole 22 that penetrates in a direction orthogonal to the axial direction C, and includes a hook or the like when the water purification cartridge 1 is removed from the filtration portion 45. The water purification cartridge 1 can be removed by inserting and hooking an attachment / detachment jig (not shown) into the insertion hole 22. And since the said jig | hook is hooked in the insertion hole 22, and it removes, even if the knob | pick part 21 gets wet with water, it can be replaced | exchanged more safely without slipping and dropping like a finger | toe.

Of course, the sealing cap 10 provided with the knob portion 21 is connected and fixed to the partition plate 13 via the circular tube member 17 described above, so that when the water purification cartridge 1 is held by the knob portion 21, an external impact is applied. Therefore, it is preferable that the sealing cap 10 can be reliably prevented from coming off the molded activated carbon 4 and the safety can be further improved. Note that the knob 21 is not limited to one that is concentric with the molded activated carbon 4 and protrudes into a cylindrical shape or a prismatic shape, but is an annular shape that protrudes concentrically with the sealing portion 11 or the radial direction of the sealing portion 11. It is also possible to use a rectangular shape having a longitudinal portion extending along the ring or a ring-shaped member attached to the insertion hole 22 in advance. Furthermore, it is preferable that a non-slip portion (not shown) such as a groove or an unevenness is provided on the outer surface such as the peripheral surface or the side surface of the knob 21. That is, when the operator picks the knob 21, even if the knob 21 is wet with water or the like, the anti-slip portion can prevent the finger or pliers from slipping.

While the invention has been described in terms of several preferred embodiments, various modifications and variations can be made by those skilled in the art without departing from the true spirit and scope of the invention, ie, the claims.

Claims

A molded activated carbon that is formed in a hollow cylindrical shape as a filter medium and has openings on both end faces, and a sealing cap that closes the opening of the first end face of the shaped activated carbon,
The molded activated carbon flows water from at least the outer peripheral surface and the first end surface and flows the filtered water from the inner peripheral surface to the inner peripheral space,
The space is sealed with the sealing cap,
The sealing cap has a cylindrical closing portion protruding from the opening of the first end surface into the space;
The closed portion is configured to prevent the outflow of water from the closed inner peripheral surface to the space by closing the inner peripheral surface of the molded activated carbon by a predetermined dimension from the opening of the first end surface. Features a water purification cartridge.
The sealing cap includes a sealing portion that is formed in a disc shape and closes the opening of the first end surface, and an outer diameter of the sealing portion is larger than an inner diameter of the opening of the first end surface. The water purification cartridge according to claim 1, wherein the water purification cartridge is set smaller than an outer diameter of the first end face.
3. A water purification cartridge according to claim 2, wherein a gap is formed between the first end face and the sealing portion to such an extent that water can enter.
The said sealing cap is fixed to the said shaping | molding activated carbon by the said closing part being press-fitted in the said inner periphery of the said shaping | molding activated carbon from the said opening of the said 1st end surface. Water purification cartridge.
The dimension obtained by subtracting the inner peripheral radius from the outer peripheral radius of the molded activated carbon is T, the predetermined dimension at which the closing portion is closed is D, and the dimensional ratio between the molded activated carbon and the closing portion is 0.5 <T / D <2. The water purification cartridge according to claim 1, wherein the water purification cartridge has a relationship of .5.
A partition plate is provided on the opening side of the second end surface opposite to the first end surface of the molded activated carbon,
The partition plate includes a main body plate provided with a connection port communicating with the opening of the second end surface, and a cylindrical shape that extends from the main body plate to the space and extends through the inner periphery of the connection port. An attachment portion,
The partition plate is attached to the molded activated carbon through the attachment portion,
The molded activated carbon flows water into the molded activated carbon not only from the outer peripheral surface and the first end surface but also from the second end surface,
The mounting portion is configured to close the inner peripheral surface of the molded activated carbon by a predetermined dimension from the opening of the second end surface, and to prevent water from flowing into the space from the closed inner peripheral surface. The water purification cartridge according to claim 1 or 5, characterized by the above.
The water purification cartridge according to claim 6, further comprising a circular pipe member that connects the closing part and the attachment part in an axial direction, wherein the circular pipe member has a plurality of water passage openings on a peripheral surface thereof.
8. The sealing cap according to claim 1, wherein the sealing cap has a knob, and the knob has an insertion hole for inserting a jig for removal. Water purification cartridge.
The water purification cartridge according to claim 6, wherein the sealing cap has a knob, and the knob has an insertion hole for inserting a jig for removal.
A water purification device comprising filtration means for filtering impurities in the raw water, wherein the filtration means is detachably equipped with the water purification cartridge according to any one of claims 1 to 5, 7, and 9. apparatus.
A water purifier comprising a filtering means for filtering impurities in raw water, wherein the filtering means is detachably equipped with the water purification cartridge according to claim 6.
A water purifier comprising a filtering means for filtering impurities in the raw water, wherein the filtering means is detachably equipped with the water purification cartridge according to claim 8.
A clean water generating means for generating purified water, and a sink capable of discharging the purified water generated by the purified water generating means, wherein the water purifier according to claim 10 is used for the purified water generating means. A sink to do.
It is a sink which is equipped with the purified water production | generation means which produces | generates purified water, and can discharge the purified water produced | generated by the said purified water production | generation means, Comprising: The water purification apparatus of Claim 11 or Claim 12 is used for the said purified water production | generation means. A sink characterized by that.