JPH06178975A - Water purifier - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] By effectively utilizing the drainage channel with a safety valve, it is possible to reduce the operational resistance of the rotary valve body while preventing contamination of the water purification system by raw water. [Structure] A switching valve 1A in which a rotary valve body 14A is installed in a valve box 13A, a valve unit 107 for opening and closing a flow path from a raw water supply unit to a water filtration processing unit, and a purified water discharge port a from the water filtration processing unit.
1 and the valve unit 110 for opening and closing the flow path to the flow path 1 are arranged side by side in the direction of the axis of rotation, and a safety valve 113 that opens when the internal pressure of the flow path from the raw water supply unit to the water filtration processing unit exceeds a set value is provided. A water purifier to which a provided drainage channel is connected, wherein the drainage channel is configured to include an inner peripheral surface of a valve box 13A or a rotary valve body 14A.
A groove 106 is formed over the entire circumference around the axis of the rotary shaft at a position located between the valve portions 107 and 110 on the outer peripheral surface of, and the groove 106 is communicated with the raw water supply portion and the drainage port a3.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a water purifier of a stationary type or a direct connection type which is connected to a faucet of a water supply and removes organic substances, free chlorine, suspended substances and microorganisms contained in water. Specifically, a switching valve with a rotary valve body installed in a valve box opens and closes a flow path from the raw water supply section to the water filtration processing section and a flow path from the water filtration processing section to the purified water outlet. A valve section and a drain section having a safety valve that is juxtaposed in the direction of the axis of rotation and is opened when the internal pressure of the flow path from the raw water supply section to the water filtration processing section exceeds a set value. Regarding

[0002]

2. Description of the Related Art In a conventional water purifier of this type, between a valve box and a rotary valve body, a valve portion that opens and closes a flow path from a water filtration processing portion to a purified water discharge port and a raw water supply portion is used. By installing a seal such as an O-ring that prevents water from flowing back and forth between the two parts, the raw water from the water filtration processing part It was designed to prevent the water purification system from being contaminated by reaching the valve portion that opens and closes the flow path to.

[0003]

However, in the above conventional technique, it is necessary to increase the contact pressure of the seal in order to surely and strongly stop the water. This means that, in addition to the valve portion, the switching valve has a valve portion for taking out raw water from the faucet, which is directly discharged as one flux to the outside, and a raw water from the faucet in a shower state. The valve part for taking out the raw water shower to be supplied to the outside and the valve part for taking out the purified water from the water filtration processing part to the outside from the outlet are juxtaposed in the axial direction and can be operated by one switching valve. , The raw water supply state, the raw water shower supply state, and the purified water supply state can be switched, and a valve section for supplying raw water to backwash the water filtration processing section is also provided to backwash the water filtration processing section. In the case of a multi-function type water purifier in which the operation resistance of the rotary valve body tends to increase due to the increase in the number of seals,
It is a disadvantage. In addition, it was unavoidable to continue to use the seal without knowing the seal defect due to unavoidable deterioration over time. The purpose of the present invention is to
The effective use of the drainage channel with a safety valve is to reduce the operational resistance of the rotary valve body and prevent contamination of the water purification system by raw water.

[0004]

The feature of the water purifier according to the present invention is that the drainage path is formed by a portion of the inner peripheral surface of the valve box or the outer peripheral surface of the rotary valve body located between both valve portions. In addition, a groove is formed around the entire circumference of the axis of rotation, and the groove is communicated with the raw water supply section and the drain port.

[0005]

[Effect] Even if the raw water leaks from the valve portion that opens and closes the flow path from the raw water supply portion to the water filtration processing portion due to poor sealing of the valve portion, the leak water is trapped by the groove and discharged to the outside. be able to. In other words, it is possible to prevent contamination of the water purification system by the raw water without making the contact pressure of the seal too large. Moreover, since the intended safety drainage is used to prevent contamination of the purified water system by the raw water, it is not necessary to separately provide a means for discharging the raw water leaked from the valve portion.

[0006]

Therefore, according to the present invention, it is possible to structurally advantageously prevent contamination of the water purification system by the raw water without increasing the operating resistance of the rotary valve body. It is useful for the multi-function type provided.

[0007]

[Example] An example of application to a water faucet direct connection type water purifier will be shown. As shown in FIGS. 1 to 7, the faucet direct connection type water purifier includes a water purifier body 100 that is detachable from a faucet A and a water purifier body 10 thereof.
It consists of a water purification cartridge K that can be freely attached to and detached from the side surface of 0. The attachment / detachment direction of the cartridge K is the lateral direction.

As shown in FIGS. 8 to 10, the water purifier main body 100 has a switching valve 1A in which the upper portion is connected and connected to the faucet A through a connecting and connecting means, and the lower portion is connected to a water discharge part.
Is internally configured in a case including an upper case 2A and a lower case 3A. The upper case 2A and the lower case 3A are the upper case 2A of the claw 4A formed integrally with the lower case 3A.
1 by the elastic engagement with the concave part and the fastening with the screw 5A.
The lower case 3A has a clean water discharge port a1 and a cleaning waste water discharge port a2.
A relief water drainage port a3 is formed. Also, a part of the joint between the upper case 2A and the lower case 3A has a decorative plate 6A for internal visual inspection windows or for accenting the appearance.
Is fitted. The water discharge part includes a central main water discharge flow path 7A and an annular shower water discharge flow path 8 located around the main water discharge flow path 7A.
With A. Further, the main water discharge passage 7A and the shower water discharge passage 8A are separated from each other, and the shower water discharge passage 8A is provided.
Baffle plate 9A for dispersing water that has flowed in from above in the circumferential direction, and one discharge hole 10A that is screwed and attached to the lower case 3A from the main discharge passage 7A and the shower discharge passage 8A. The shower cap 12A has a large number of shower discharge holes 11A.
The switching valve 1A includes a valve box 13A and the valve box 13A.
And a rotary valve body 14A that is rotatably installed around the horizontal axis,
The rotary valve body 14A has a valve shaft 15A and an operation lever 16A mounted in a non-rotating state. And the valve box 13A
Is divided into two in the axial direction, as shown in FIGS. That is, the raw water inlet port P1 communicating with the faucet A and the first water communicating with the main discharge passage 7A
A straight shower switching main body 101 having an outlet port P2 and a second outlet port P3 communicating with the shower water discharge passage 8A is provided, and a raw water supply port P4 to the cartridge K and a cartridge K are provided. Clean water receiving port P5 from the clean water discharge port a1
02, a clean water outlet port P6, a raw water supply port P7 for cleaning to the cartridge K, and a wash waste water discharge port P8 communicating with the wash waste water discharge port a2.
And an extension portion 103 for cleaning purified water in which a relief port P9 communicating with the relief water discharge port a3 is formed. A rotary valve body 14 is provided at each of the ports P1 to P9.
A packing 19A for sealing between the outer peripheral surface of A and the outer peripheral surface of A is loaded, and the water purification pipe 102 is pushed upstream by a spring 104 and is displaced in the longitudinal direction of the pipe in accordance with the pressure of the water purification. A detection body 105 is installed which displays the clogging degree in the cartridge K at a position in the flow direction with respect to the water purification pipe 102. The water purification pipe 102 is made of a transparent material so that the detection body 105 can be viewed from the outside, and the detection body 105 has a flow direction position corresponding to a clogged state in which the pressure of the purified water is equal to or less than a set value. In, it can be seen from the outside through the decorative plate 6A. That is, the clogging is displayed when the detection body 105 is visible through the decorative plate 6A. The raw water supply port P4, the cleaning raw water supply port P7, and the purified water receiving port P5 are arranged in a line along the axial direction, and are arranged in the stated order from one end side in the axial direction, Clean water extraction port P6
Is arranged at the same axial center position as the purified water receiving port P5, and the relief port P9 is the raw water supply port P for cleaning.
7 and the purified water receiving port P5 at an intermediate position in the axial direction. On the other hand, the rotary valve body 14A is also divided into two main parts 101 and extension parts 103 in the axial direction, and the rotary valve body 14A has a structure shown in FIGS.
As shown in FIGS. 5 to 18, while the raw water inlet port P1 communicates with the first outlet port P2 in the first rotational posture with respect to the valve box 13A, the raw water inlet port P1 communicates with the first rotational posture in one direction. In the rotated second rotation posture, the raw water inlet port P1 communicates with the second outlet port P3, and the first water passage R1 rotates in the direction opposite to the second rotation posture with respect to the first rotation posture. The raw water channel R2 communicating with the raw water inlet port P1 in the third rotational posture and the fourth rotational posture rotated further in the opposite direction to the third rotational posture;
Raw water supply port P to the raw water channel R2 in the rotating posture
4, a first water hole r1 for communicating with each other, a third water passage R3 for communicating the purified water extraction port P6 with the purified water receiving port P5 in the third rotation posture, and the raw water passage in the fourth rotation posture. A second water hole r2 that connects the raw water supply port for cleaning P7 to R2, a fourth water passage R4 that connects the raw water supply port P4 to the cleaning drainage discharge port P8 in the state of the fourth rotation posture, and a constant relief port P9. And a relief channel R5 that connects the groove 106 to the raw water channel R2 so as to communicate with the raw water channel R2.
And are formed. In addition, between the inner peripheral surface of the valve box 13A and the outer peripheral surface of the rotary valve body 14A, the first valve portion 107 having the cleaning raw water supply port P7 and the second valve portion having the relief port P9 are provided. A ring-shaped seal 109 having a U-shaped cross section for preventing water from flowing between the valve portions 107 and 108 is installed at a boundary portion with the valve portion 108, and a third valve portion provided with a purified water receiving port P5. 110 and the second valve portion 1
The ring-shaped seal 1 having a U-shaped cross-section that prevents water from flowing between the valve portions 107 and 108 also at the boundary with 08.
09 is installed. Then, while the valve body 111 that opens and closes the relief port P9 and the valve body 111 that is normally pressed to close the relief port P9 are pressed, when the internal pressure of the raw water channel R2 rises to a set value, the internal pressure is lost. A safety valve 113 including a spring 112 that allows the opening operation of the valve body 111 is installed.

The rotary valve body 14A has a valve box 13
By engaging the concave portion formed on the inner peripheral surface of A through the elastic force of the spring, the rotary valve body 14A is moved to the above-mentioned first to second portions.
Ball 20A for detent held in each of the third rotation postures
And a return spring 114 for automatically returning the rotary valve body 14A from the fourth rotation posture to the third rotation posture when the operation is released. Furthermore, in the upper case 2A,
A convex lens-shaped display window 22 for visually observing the inside from the outside
A is formed, and a bowl-shaped display member 2 is provided on the valve shaft 15A.
3A is mounted so as to rotate integrally therewith, and a portion of the display member 23A corresponding to the display window 22A when the rotary valve body 14A is in each rotation posture, that is, a portion visible from the display window 22A. Is marked with a mark indicating the rotational attitude of the rotary valve body 14A. In the cartridge K, a tubular molded fiber activated carbon module 26A for water treatment is installed in a case 25A so as to partition the inside of the case 25A into a central space S1 surrounded by the same and an annular space S2 around the central space S1. The hollow fiber membrane module 46A is arranged in a central space S1 surrounded by the molded fiber activated carbon module 26A, and the molded fiber activated carbon module 26A is passed through the annular space S2 in the thickness direction. After reaching the central space S1, the hollow fiber membrane module 4
Water is introduced into the state of being permeated through 6A to purify the water. The case 25A is a container-shaped body member 27.
A and a lid member 28A screwed into the lower end opening of the main body member 27A, and the lid member 28A is connected to the raw water supply port P4 of the valve box 13A as the water purifier main body 100 is attached to the lid member 28A. The space S2 of the raw water supply port P
4 and the water purifier main body 100.
Connection portion 116 for connecting the central space S1 to the purified water receiving port P5 by connecting it to the purified water receiving port P5 of the valve box 13A, and the valve box 13A attached to the water purifier body 100. Is integrally formed with a cleaning connecting portion 117 having a check valve V, which is connected to the cleaning raw water supply port P7 and connects the central space S1 to the cleaning raw water supply port P7. Then, by making the interval between the connection part 115 and the cleaning connection part 117 and the interval between the purified water extraction connection part 116 and the cleaning connection part 117 different from each other in the circumferential part, the horizontal direction attached to the water purifier body 100. The one that is located in the upper position is decided. The means for fixing the molded fiber activated carbon module 26A to the case 25A is the space S
1, the central space and the annular space corresponding to S2
It is fixed to the case 25A in the axial direction by being sandwiched by the partition inner peripheral wall 118 integrally formed on the lid member 28A so as to be formed in A and the bottom plate portion of the main body member 27A,
It is means for fixing the hollow fiber membrane module 46A and the bottom plate portion in an annular portion 119 integrally formed with the hollow fiber membrane module 46A in the radial direction with respect to the case 25A. The molded fiber activated carbon module 26A is configured by stacking two molded fiber activated carbons 32A in a concentric state in the axial direction and arranging a seal 33A also serving as a frame between the end faces thereof. Seal 33A
As shown in FIG. 14, water may flow between the spaces S1 and S2 through the boundaries between the upper and lower surfaces that contact the upper and lower end surfaces of the molded fiber activated carbon 32A and the upper and lower end surfaces of the molded fiber activated carbon 32A. Annular water-stop projection 34A that is prevented by cutting into the upper and lower end surfaces of the molded fiber activated carbon 32A
And a plurality of circumferential position regulating projections 35A that come into contact with the upper and lower end peripheral surfaces of the molded fiber activated carbon 32A and prevent lateral displacement of the end portions. The end face of the molded fiber activated carbon 32A and the inner peripheral wall 118
The seal 33A is also interposed between the above and the bottom plate portion of the main body member 27A, and the annular water-stop projection 34A that functions in the same manner as above is integrally formed. The molded fiber activated carbon 32A has a density of 0.13 or more obtained by dividing the weight (g) in the molded state by the volume (cm ³ ) so as to have a filtering function. The hollow fiber membrane module 46A is
A cylindrical frame 47A fixed to the case 25A by fitting one end portion with the inner peripheral wall 118 of the lid member 28A and the other end portion with the annular portion 119 of the bottom plate portion is provided, and one end of this frame 47A is provided. A large number of hollow fiber membranes 4
The bonded member 49A holding 8A is attached to the hollow fiber membrane 4
8A is fitted and installed in the frame 47A, that is, in a state of being arranged in the central space S1, and the frame 47A is provided with a large number of holes 120 for allowing water that has permeated through the molded fiber activated carbon module 26A to flow into the central space S1. Formed and configured. Hollow fiber membrane 48 of the hollow fiber membrane module 46A
A and the central space S1 for accommodating it are the hollow fiber membrane 48
The volume of A is 60 to 90% of the volume of the space S1. As shown in FIG. 13, the lid member 28A is provided with an air vent guide 121 for restricting the water output from the connecting portion 115 to only the uppermost portion of the annular space in the mounted state. I am allowed.
The means for mounting and fixing the cartridge K on the water purifier main body 100 is a holding portion 122 for holding the lid member 28A of the cartridge K by inserting the lid member 28A of the cartridge K from the lateral direction into the upper case 2A and the lower case 3A and holding the lid member 28 at the connection position in a positioned state. A slider 124 that is integrally formed with the lower case 3A and is vertically slidable and has an operation portion 123 that is upward at the lower end.
Is mounted such that the operating portion 123 at the lower end thereof projects downward from the lower case 3A, and a return spring 125 for sliding the slider 124 to the lower position when the operation is released is provided, and the slider 124 is provided on the slider 124.
The locking fixing piece 127 for locking the cartridge K with respect to the holding portion 122 by locking the locking portion 126 formed integrally with the lid member 28A of the cartridge K positioned at the connection position as the cartridge K slides downward. It is formed integrally. In addition, the cam surface 128 is pushed by the locking portion 126 when the cartridge K is inserted into the connecting portion and slides the locking fixing piece 127 to the locking release position against the restoring force. By forming the cartridge K, the locking fixing piece 127 is locked with the insertion of the cartridge K.
6 is configured to be automatically locked. In addition, a passage 129 is formed in the operation portion 123 for discharging the water leaking into the lower case 3A to the outside.

Therefore, in this faucet direct connection type water purifier, the following state is revealed by operating the switching valve 1A. << 1 >> As shown in FIG. 15, by rotating the rotary valve body 14A to the first rotation posture, the raw water from the faucet A becomes
Raw water inlet port P1, first water channel R1, first outlet port P
Flowing in the order of 2 and the description thereof, a raw water straight state in which raw water is discharged from one discharge hole 10A in a thick flux state appears. << 2 >> As shown in FIG. 16, by rotating the rotary valve body 14A to the second rotation posture, the raw water from the faucet A becomes
Raw water inlet port P1, first water channel R1, second outlet port P
3 and the order in which the shower discharge holes 11A flow.
A raw water shower state in which raw water is discharged in a shower state appears. << 3 >> As shown in FIG. 17, by rotating the rotary valve body 14A to the third rotation posture, the raw water from the faucet A becomes
Raw water inlet port P1, raw water channel R2, raw water supply port P
4, the connecting portion 115, the annular space S2 of the cartridge K,
Molded fiber activated carbon module 26A, central space S1, hollow fiber membrane module 46A, purified water extraction connection 116,
The purified water receiving port P5, the third water passage R3, the purified water pipe 102, and the order in which they are described are processed into the purified fiber activated carbon module 26A and the hollow fiber membrane module 46A in order to become purified water, and the purified water is discharged from the purified water discharge port a1. The clean water condition is revealed. << 4 >> As shown in FIG. 18, by rotating the rotary valve body 14A to the fourth rotation posture, the raw water from the faucet A becomes
Raw water inlet port P1, raw water channel R2, washing raw water supply port P7, washing connection 117, hollow fiber membrane module 4
6A, the central space S1 of the cartridge K, the molded fiber activated carbon module 26A, the annular space S2, the connecting portion 115,
The backwash state in which the raw water supply port P4, the fourth water channel R4, the wash drainage discharge port P8, and the wash drainage outlet a2 flow in that order to backwash the hollow fiber membrane module 46A and discharge the wash drainage to the outside is To be revealed.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a raw water straight state of a faucet direct connection type water purifier.

FIG. 2 is a schematic cross-sectional view showing a raw water shower state of a faucet direct connection type water purifier.

FIG. 3 is a schematic cross-sectional view showing a purified water state of a faucet direct connection type water purifier.

FIG. 4 is a schematic cross-sectional view showing a backwash state of a faucet direct connection type water purifier.

[Figure 5] Front view of the entire faucet direct connection type water purifier

[Figure 6] Side view of the entire faucet direct connection type water purifier

FIG. 7 is a plan view of the entire faucet direct connection type water purifier.

[Figure 8] Vertical side view of the entire faucet direct connection type water purifier

FIG. 9 is a cross-sectional plan view of the main part of a water faucet direct connection type water purifier.

FIG. 10 is a vertical sectional front view of the entire faucet direct connection type water purifier.

FIG. 11 is a plan view of a rotary valve body.

FIG. 12 is a side view of the rotary valve body.

FIG. 13 is a rear view of the lid member of the cartridge.

FIG. 14 is a perspective view of a seal.

FIG. 15 is a sectional view showing a raw water straight state of the switching valve.

FIG. 16 is a cross-sectional view showing a raw water shower state of the switching valve.

FIG. 17 is a cross-sectional view showing a purified water state of the switching valve.

FIG. 18 is a cross-sectional view showing a backwash state of the switching valve.

[Explanation of symbols]

 13A valve box 14A rotary valve body 1A switching valve 107 valve part 110 valve part a1 clean water discharge port 113 safety valve 106 groove a3 drainage port

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kiichiro Miyata, 17 Chudoji Minami-cho, Shimogyo-ku, Kyoto City Kyoto Prefecture Omron Life Science Institute

Claims (1)

[Claims] 1. A switching valve (1A) in which a rotary valve body (14A) is installed in a valve box (13A), a valve section (107) for opening and closing a flow path from a raw water supply section to a water filtration processing section, and a water A valve unit (110) that opens and closes a flow path from the filtration processing unit to the purified water discharge port (a1) is juxtaposed in the rotation axis direction, and the internal pressure of the flow path from the raw water supply unit to the water filtration processing unit is set to a set value. A water purifier to which a drainage channel provided with a safety valve (113) that opens when the above is reached is formed, and the drainage channel is configured such that an inner peripheral surface of a valve box (13A) or a rotary valve body ( 14A), a groove (106) is formed on the outer peripheral surface of the outer peripheral surface between the valve parts (107) and (110) around the axis of rotation.
A water purifier in which the groove (106) communicates with the raw water supply section and the drainage port (a3).