JPH05293473A - Water purifier and water purifying cartridge therefor - Google Patents

Abstract

PURPOSE:To maintain water purifying performance by a water purifying cartridge for a water purifier for by arranging an antibacterial means for dissolving out copper ions or metallic ions which have ionization tendency larger than the copper ions and have antibacterial properties in the inlet side of raw material in a water purifying filter of a hollow yarn membrane arranged with an extremely fine steel fibrous body. CONSTITUTION:A water purifying cartridge 4 for a water purifier is built-in to the inside of the water purifier and constituted of the water purifying filter of a hollow yarn membrane, activated carbon or combination thereof. An extremely fine steel fibrous body D is arranged in the outlet side of clean water in the water purifying filter of the hollow yarn membrane. The water purifier is constituted so that antibacterial substance A, B being an antibacterial means are arranged in the inlet side of raw water in the water purifying filter of the hollow yarn membrane. The antibacterial means dissolves out copper ions or metallic ions which have ionization tendency larger than the copper ions and have antibacterial properties. Thereby, prevention of deterioration is performed in the outlet side of clean water in the hollow yarn membrane in order to prolong the service life of the antibacterial substances A, B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifier and a water purification cartridge for a water purifier that can obtain water in a sterile condition.

[0002]

2. Description of the Related Art A water purifier body connected to a water faucet by a water supply hose or directly connected to the water faucet, and a water purification section made of a hollow fiber membrane or a combination of a hollow fiber membrane and activated carbon. In a water purification cartridge for water purifiers, antibacterial action by silver loading on activated carbon or bacterial outflow prevention measures by hollow fiber membrane is taken as a countermeasure against bacteria that propagate in dechlorinated water by activated carbon. For the problem of bacterial growth in the accumulated water of the water entry part to the hollow fiber membrane, the fibrous body formed of ultrafine copper that is an antibacterial substance or the metal formed of ultrafine copper at the outlet side of the purified water Means for arranging filters have been proposed.

[0003]

However, a fiber body made of ultrafine copper which is an antibacterial substance or a metal filter made of ultrafine copper is arranged on the purified water outlet side of the hollow fiber membrane as described above. In the means, when a large amount of water is passed or if it is left for a long time, eluted silver ions derived from silver carried on activated carbon, or other metal ions having an ionization tendency smaller than that of copper, and a super antibacterial substance. Antibacterial effect of ultrafine copper fibrous body due to chemical bonding reaction on the surface of ultrafine copper fibrous body due to the degree of ionization tendency with copper ions derived from fiber filter formed of ultrafine copper or metal filter formed of ultrafine copper There was a problem that the performance was significantly deteriorated.

The present invention is intended to solve the above problems, and an object of the present invention is to provide a water purifier and a water purifying cartridge for a water purifier that have a long life and can obtain purified water in a sterile state for a long period of time.

[0005]

In order to achieve the above object, a water purification cartridge for a water purifier according to the present invention has a hollow fiber membrane water purification filter, activated carbon, and
Or, in a water purifying cartridge for a water purifier composed of a combination thereof, copper ions or a metal having an antibacterial property having a greater ionization tendency than copper ions at the raw water inlet side of a hollow fiber membrane water purifying filter in which ultrafine copper fiber bodies are arranged at the water purifying outlet side The feature is that an antibacterial means for eluting ions is arranged. Further, it is characterized in that the antibacterial means is composed of an ultrafine copper fiber body or copper-impregnated activated carbon.

Further, the water purifier according to the present invention is characterized in that the water purification reservoir portion and the adhesion portion on the water purification outlet side are processed with a resin containing an antibacterial substance or the resin surface is processed with an antibacterial metal plating or a metal. Have

[0007]

[Function] Thus, an antibacterial means for eluting copper ions or metal ions having an antibacterial property having a greater ionization tendency than copper ions at the raw water inlet side of a hollow fiber membrane water purification filter having an ultrafine copper fiber body disposed at the purified water outlet side By arranging, it is possible to prevent deterioration of the antibacterial substance on the water purification outlet side of the hollow fiber membrane for prolonging its life, and it is possible to maintain the water purification performance of the water purification cartridge for a water purifier for a long period of time. Also,
Antibacterial substances are also kneaded on the purified water reservoir side and attached part on the purified water outlet side, or the resin surface is treated with antibacterial metal plating or metal, so that the purified water reservoir part and attached part on the purified water outlet side are also antibacterial. It is possible to have performance, and aseptic purified water can be obtained for a long period of time.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. This water purifier has a switching unit 1 for switching the flow of water.
And a backwashing section 2 in which a water purification cartridge 3 for purifying water supplied through the switching section 1 is stored, and a backwashing section 2 in which a purified water storage section and a backwashing section are stored. There is.

The switching portion 1 mounted on the faucet 9 by a mounting nut 11 that engages with a mounting aid 14 used according to the shape of the tip of the faucet 9 and is screwed into the main body housing 10 is a rotary type switching valve 5 Valve chamber 5 with built-in
0 is provided inside, and a shower cap 12 is attached to the lower end portion. In the figure, reference numeral 15 is a water blocking packing which is in contact with the tip of the faucet 9 and is in contact with the outer peripheral surface of the switching valve 5 which will be described later, and 300 and 301 are spacers. The shower cap 12 is provided with a water discharge port 16 having a wire mesh 18 for rectification in the central part and a large number of small holes 17 for shower-like water sprinkling in the peripheral part. The opening at the lower end of the chamber 50 communicates with the radial rib 100 for straightening through the partition 19 provided on the inner peripheral surface.

The valve chamber 50 having a circular cross section has an upper opening communicating with the faucet 9, a lower opening communicating with the water outlet, an opening communicating with the outer peripheral space of the partition 19, and an opening communicating with the backwash section 2. The switching valve 5 accommodated therein has an opening connected to the water purification unit 3, and the switching valve 5 accommodated therein selectively connects the upper opening of the valve chamber 50 with the other four openings 4
It has a communication hole for seeds. Further, at both ends of the switching valve 5 in the axial direction, a cylinder 55 and a ring 5 that rotate integrally with the switching valve 5 are provided.
9 and 9 are attached. In the figure, 60 is a holding frame for pressing the switching valve 5, 13 is a lever attached to one end of the switching valve 5, 91 is the ring 59 which is biased by a spring 92.
It is a ball that engages with a click hole formed on the outer peripheral surface and gives a click at a plurality of positions for the rotation of the switching valve 5. Further, 93 is a ball that closes the emergency drain port formed in the flow path that connects the faucet 9 and the water purification unit 3 in a state where it is biased by the spring 94, and the water pressure during the water flush is abnormally high. Release water. The ends of the springs 92 and 94 are received by the partition 19.

The backwash unit 2 has a piston 26 as a movable unit located on the same axis as the switching valve 5 in a cylinder 22 having one end coupled to the main body housing 10 and the other end having a purified water discharge port 21. 2 for arranging and opening and closing the passage between the cylinder 22 and the purified water outlet 21
5 is provided. On the inner surface 600 of the piston 26 as a movable portion, a fiber assembly made of ultrafine copper as the antibacterial substance B or a metal filter made of ultrafine copper is added so as to face the space α described later. It is set up. Further, in the backwash section 2, it is arranged on the outer periphery of a tubular body 55 which rotates integrally with the switching valve 5, and
5. A slide valve 57 is provided in which a protrusion 56 protruding from the outer peripheral surface engages with a cam groove on the inner peripheral surface. The slide valve 57 slides in the axial direction with the rotation of the tubular body 55, and opens and closes a drain port 74 for draining water in the space β.
It controls the opening and closing of the outlet in the water purification unit 3 described later.
The valve 25 is a support cylinder 28 fixed to the cylinder 22.
Is provided at one end of a valve shaft 25 that axially penetrates through and is slidable in the axial direction.
Is urged in the direction of closing the flow path between the cylinder 22 and the purified water outlet 21. 80,85 in the figure
Is an O-ring, 81 and 82 are seal packings attached to the switching valve 5, 83 is a seal packing attached to the piston 26, and 84 is a seal packing attached to the slide valve 57. Here, the purified water collecting portion on the side of the purified water, the cylinder 22 as the adhering portion, the water outlet 16, and the rectifying wire mesh 18 attached to the central portion of the water outlet 16 are:
It is made of a molded product in which an antibacterial substance is kneaded into a resin, or the surface of the resin is plated with an antibacterial metal or processed with a metal.

The water purification unit 3 covers the main body housing 10 by covering the back cover 2 of the case 30 consisting of two upper and lower parts with a connecting cylinder extending to the back side and covering the inside with water. The water purification cartridge 4 is formed as a container. As shown in FIG. 1, the water purification cartridge 4 for the water purifier has a check valve 4 on one end surface.
6, the inflow port 71, the discharge port 72, and the discharge port 73.
And a filter medium 45 made of a hollow fiber membrane and housed in the module case 200 in a case 40 provided with
A filter medium 44 made of activated carbon and a net 42 held by a net frame 41 are arranged. A constantly open water passage is provided at approximately the uppermost part of the surface of the module case 200 on the net 42 side. A water passage is provided with a check valve that is opened only when the purified water is discharged. An ultrafine copper fiber body is placed as an antibacterial substance C on the purified water outlet side of the purified water cartridge 4 for the water purifier. Further, an antibacterial means for eluting copper ions or metal ions having an antibacterial property having a greater ionization tendency than copper ions is arranged on the raw water inlet side of the hollow fiber membrane water purifying filter of the water purifying cartridge 4 for water purifier.
The antibacterial means is, for example, an ultrafine copper fiber body D or a copper-impregnated activated carbon E. In the figure, 43 is a bottom lid that closes the end face opening of the case 40, 201 is a net 20 that prevents the filter medium 44 made of activated carbon from flowing out from the inlet 71 and the outlet 72.
It is a net frame that holds 2. Inlet 71 to case 4
The water that has entered 0 enters the storage space for the filters through the passage 33 that is partitioned from the storage space for the filters, and enters the storage space for the filters from the net 42 side at the other end of the case 40.
4, and after coming into contact with the filter medium 45, it flows out from the discharge port 73.

However, when the switching valve 5 is set to the water stop position by the operation of the lever 13, the water flowing from the faucet 9 into the valve chamber 50 passes through the communication hole of the switching valve 5, and the tubular body at one end of the switching valve 5 The space β in the cylinder 22 is filled through a gap formed by a groove between the bottomed tubular portion 27 that is integrated with the piston 26 and the bottomed tubular portion 27 and the tubular body 55. At this time, the slide valve 5 is provided between the drainage port 74 formed in the outer wall of the backwash unit 2 and the space β.
Since it is closed at 7, no water will come out from this state. Further, at this time point, since the discharge port 72 and the drain port 74 are connected to each other through the groove formed on the outer periphery of the slide valve 57, the water in the water purifier cartridge 4 for the water purifier has the discharge port 72, the drain port 74, and Case 3
It is in a state of being discharged to the outside through the drainage port 32 formed on the bottom surface of 0.

When the communication hole of the switching valve 5 is made to communicate with the faucet 9 by operating the lever 13, water flowing in from the faucet 9 has a partition 19 at the other end of the communication hole from the inner surface of the main body housing 10.
Since it faces the space between it and the outer peripheral surface, it flows into this space and is discharged downward through the small holes 17 of the shower head 12. Further, when the faucet 9 side and the water outlet 16 are communicated with each other by the communication hole penetrating the switching valve 5, the water from the faucet 9 is rectified by the radial ribs 100 and the wire net 18 formed in the partition 19. Outlet 16
Discharged from.

Then, one end of the communication hole of the switching valve 5 is connected to the faucet 9
When it is communicated with the side, the other end of the communication hole is connected to the inflow port 71 of the water purifier cartridge 4 for the water purifier in the water purifier 3 through the connection port 75 penetrating the main body housing 10, so that the water is the water purifier cartridge for the water purifier. Go in 4,
After being filtered by a filter medium 44 made of copper-impregnated activated carbon E as an antibacterial means, it is filtered by a filter medium 45 made of a hollow fiber membrane filter through an ultrafine copper fiber body D as an antibacterial means, and then as a purified water outlet side. The antibacterial substance C contained in the purified water outlet space 400 between the discharge port 73 and the hollow fiber membrane filter passes through the discharge port 73 and enters the space α on the valve 25 side of the piston 26 in the backwash unit 2. Here, the purified water entering the space α is the antibacterial substance B attached to the inner surface 600 of the piston 26 as a movable part and the purified water outlet 21.
The antibacterial substance A stored and arranged in the space 500 in front of is subjected to antibacterial and sterilization treatments.

At this time, the valve 25 is initially biased by the spring 24 to close the purified water drainage port 21, and the cylinder 55 rotating together with the switching valve 25 moves the slide valve 57 to a position where the drainage port 74 is opened. Therefore, the purified water (purified water) flowing into the space α presses the piston 26, and the water contained in the space β is discharged to the outside through the drain port 74 and the drain port 32 formed in the case 30. To discharge. The space β
The backflow of the contained water to the switching valve 5 side is prevented by the check valve 58 arranged at the end of the communication hole 51. Then, when the purified water flowing into the space α pushes the piston 26, the valve shaft 23 provided with the engaging portion with the piston 26 causes the spring 2 to move.
Since the valve 25 is pulled to the left in the figure against 4 and the valve 25 moves, the purified water outlet 21 opens. As a result,
The purified water that has passed through the antibacterial substance A is discharged from the purified water outlet 21. At this point, the water purification cartridge 4 for water purifier
The outlet 72 at is closed by a slide valve 57 that moves in the same direction as the piston 26. In addition, the purified water discharge port 21 is opened only when the purified water is filled in the space α which is the purified water storage part so that the entry of dust and miscellaneous bacteria from the purified water discharge port 21 is prevented. ing.

A switching valve 5 is placed at the water stop position after finishing the discharge of purified water.
When it is returned, backwashing is performed as follows. That is, when one end of the communication hole of the switching valve 5 is communicated with the faucet 9, the water from the faucet 9 flows into the space β in the backwash section 2 through the communication hole and presses the piston 26 to reduce the volume of the space α. try to. At this time, the slide valve 57 moves in association with the rotation of the tubular body 55 that rotates integrally with the switching valve 5, so that the discharge port 72 and the drain port 74 communicate with each other through the groove formed on the outer periphery of the slide valve 57. .. Further, the valve 25 closes the purified water outlet 21 as the piston 26 moves. Therefore, the purified water accumulated in the space α is generated by the piston 2 due to the pressure of the raw water flowing from the faucet 9 into the space β.
Along with the movement of 6, the water flows back through the water purifier cartridge 4 for the water purifier through the discharge port 73. At the time of this backwash, the check valve in the water purification cartridge 4 for the water purifier closes the water passage port,
The water that has passed through the filter medium 45 moves to the filter medium 44 side only through the water passage port located above, and then the discharge port 72 and the drain port 7
4. It is discharged to the outside through the drainage port 32 formed on the bottom surface of the case 30, and finally returns to the state shown by the imaginary line in the figure. After the clean water is discharged, every time the water stopping operation is performed, the backwash with the clean water is performed.
Here, as the piston 26 as the movable portion moves, the accumulated water in the space α as the purified water reservoir is agitated by the movement of the piston 26 as the movable portion, whereby the inner surface 600 of the piston 26 is agitated. The effect of the attached antibacterial substance B is increased, and the antibacterial and bactericidal effects are enhanced by stirring.

The purified water to be discharged from the purified water discharge port 21 is copper ion disposed on the raw water inlet side of the hollow fiber membrane water purification filter of the water purification cartridge 4 for water purifier or an antibacterial agent having a greater ionization tendency than copper ions. -Impregnated activated carbon E as an antibacterial means for eluting metallic ions
And the ultrafine copper fiber body D, and the discharge port 73 as the purified water outlet side
Between the hollow fiber membrane and the hollow fiber membrane, the antibacterial substance C housed and arranged in the purified water outlet space 400, the antibacterial substance B attached to the inner surface 600 of the piston 26 as a movable part, and the space in front of the purified water outlet 21. The water is discharged as antibacterial and sterilized by the action of the antibacterial substance A stored and arranged in the section 500, and aseptic purified water can always be obtained. Further, the presence of the copper-impregnated activated carbon E and the ultrafine copper fiber body D as the antibacterial means can prevent deterioration of the antibacterial substance B on the purified water outlet side of the hollow fiber membrane for extending the life,
Moreover, the antibacterial effect of the ultrafine copper fiber body cannot be expected because the purified water reservoir and the adhered part on the purified water outlet side are processed with a resin mixed with an antibacterial substance or the resin surface is processed with an antibacterial metal plating or metal. Antibacterial performance can be given to the purified water collection part or the adhered part on the purified water outlet side.
It is possible to obtain aseptic purified water for a long period of time.

In the above embodiment, the drainage of the raw water used as the power for backwashing and the drainage of the purified water used for backwashing are opened and closed by the slide valve 57 that moves according to the operation of the switching valve 5. The reason why the discharge port 72 and the drainage port 74 are both used is to make the drainage channel compact by using a common drainage channel. Further, since the water pressure of the raw water is used as the driving force for the backwash, and the discharge pressure of the purified water is used for the drainage of the raw water used as the power for the backwash, in this water purifier, the switching valve 5 is operated. The power required for is only required for switching the water channel, and a light operating force is sufficient.

Further, in backwashing, it is preferable that the water pressure of the purified water that flows back in the water purification cartridge 4 for the water purifier is higher than the water pressure of the water that flows in the water purification cartridge 4 for the water purifier when the purified water is discharged. However, this is because the switching valve 5 and the piston 26 are arranged on the same axis, and the raw water entering the backwash section 2 from the switching valve 5 directly presses the piston 26, so that the water pressure loss of the raw water. There is little, and therefore sufficient water pressure can be secured.

[0021]

INDUSTRIAL APPLICABILITY As described above, the present invention has an antibacterial property having a greater ionization tendency than copper ion or copper ion at the raw water inlet side of the hollow fiber membrane water filter having the ultrafine copper fiber body disposed at the purified water outlet side. By arranging an ultrafine copper fiber body or copper-impregnated activated carbon as an antibacterial means for eluting metal ions, it is possible to prevent deterioration of the antibacterial substance on the water purification outlet side of the hollow fiber membrane for the purpose of prolonging its life. The water purification performance can be maintained for a long period of time.

In the water purifier according to the present invention,
Antibacterial substances are also kneaded on the purified water reservoir side and attached part on the purified water outlet side, or the resin surface is treated with antibacterial metal plating or metal, so that the purified water reservoir part and attached part on the purified water outlet side are also antibacterial. It is possible to have performance, and it is possible to obtain aseptic purified water for a long period of time.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view of the above.

FIG. 3 is a vertical sectional view seen from another direction of the above.

FIG. 4 is a perspective view of the above.

[Explanation of symbols]

 A antibacterial substance B antibacterial substance C antibacterial substance D ultrafine copper fiber body E copper impregnated activated carbon

Claims (3)

[Claims] 1. A water purifying cartridge for a water purifier, which is built in the water purifier and comprises a hollow fiber membrane water purifying filter, activated carbon, or a combination thereof, wherein a hollow fiber membrane water purifying filter in which an ultrafine copper fiber body is arranged on the water purification outlet side. A water purification cartridge for a water purifier, characterized in that an antibacterial means for eluting copper ions or metal ions having an antibacterial property having a greater ionization tendency than copper ions is disposed on the raw water inlet side. 2. The water purification cartridge for a water purifier according to claim 1, wherein the antibacterial means is an ultrafine copper fiber body or copper-impregnated activated carbon. 3. A water purifier having a water purification cartridge for a water purifier according to claim 1 or 2, wherein the water purification outlet part and the adhesion part are processed with a resin containing an antibacterial substance or the surface of the resin is antibacterial. A water purifier characterized by being formed by metal plating or processing with metal.