JPH06178972A - Water purifier - Google Patents

Abstract

PURPOSE:To surely prevent a cartridge from being installed erroneously, while reducing cost by using parts in common between both kinds of cartridges. CONSTITUTION:This water purifier is provided with a water purifier main body 24 provided with a first fitting part 56 and a second fitting part 57 for installing so as be freely attachable and detachable each of a first and a second cartridges K1, K2 for water treatment, and constituted so that a purifying treatment is executed by guiding water by a first cartridge K1 and a second cartridge K2 in order of its description. Further, this water purifier is provided with an erroneous installation preventing means for obstructing the installation of a second cartridge K2 to a first fitting part 56 and the installation of a first cartridge K1 to a second fitting part 57.

Description

Detailed Description of the Invention

[0001]

BACKGROUND 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 water purifier main body having a first mounting portion and a second mounting portion for detachably mounting the first and second cartridges for water treatment is provided, and the first cartridge and the second cartridge are provided. The present invention relates to a water purifier configured to conduct water for purification treatment in the order described.

[0002]

2. Description of the Related Art In the above water purifier, the first cartridge is equipped with an activated carbon module to remove organic substances and free chlorine, and the second cartridge is equipped with a hollow fiber membrane module to remove suspended substances and microorganisms. Format for removal, etc. 2
A format is adopted in which processing is shared by one cartridge and sequentially performed. Therefore, in order to perform good processing with this type of water purifier, it is necessary to accurately mount both types of cartridges on the mounting portions of the corresponding water purifier body. On the other hand, in this type of water purifier, in order to reduce the cost, the first cartridge and the second cartridge
It is desired to share parts as much as possible with other cartridges. Conventionally, the same cartridge is used for the first and second cartridges as the case in which the module for water treatment of the cartridge is installed, and the second cartridge is mounted on the first mounting portion of the water purifier body. In addition, in order to prevent the second cartridge of the second mounting portion of the water purifier body from being mounted, that is, from being erroneously mounted, the water purifier body is provided with a display for identification.

[0003]

However, in the case of the above-mentioned conventional technique, although the display indicates the mounting portion to which the cartridge is to be attached, it is necessary for a person to make a correct or incorrect correspondence between the display and the type of the cartridge. Because it won't
It was not possible to reliably eliminate erroneous mounting due to inevitable human erroneous operations such as misidentification of display, misunderstanding, and mistake of cartridge to be mounted. An object of the present invention is to make it possible to surely prevent erroneous mounting of cartridges while reducing costs by sharing parts between both kinds of cartridges.

[0004]

The feature of the water purifier according to the present invention is to prevent erroneous mounting for preventing mounting of the second cartridge on the first mounting portion and mounting of the first cartridge on the second mounting portion. The point is that means are provided. Then, the mounting means for mounting the first cartridge on the first mounting portion and the mounting means for mounting the second cartridge on the second mounting portion are configured in the same manner,
In the erroneous mounting prevention means, the mounting operation of the first cartridge to the second mounting portion is blocked and the mounting operation of the second cartridge to the first mounting portion is blocked.
It is preferable that the connection structure between the water purifier body and the first cartridge and the connection structure between the water purifier body and the second cartridge be different from each other.

[0005]

Since the mounting of the second cartridge on the first mounting portion and the mounting of the first cartridge on the second mounting portion are prevented, even if a human error such as a misunderstanding occurs, the first Of the second cartridge to the second mounting portion and the second
It is possible to prevent the cartridge from being attached to the first attachment portion and to obligate the cartridge to be attached in a normal state. In addition, only the parts of the cartridge that form the connection part to the mounting part of the water purifier body need to be different between the first cartridge and the second cartridge, so that the first cartridge and the second cartridge are different from each other. Most parts can be shared between them. In particular, the mounting means for the first and second cartridges are configured to be the same, and the connection structure is made different, thereby
In order to prevent the mounting of the cartridge in the second mounting portion and the mounting of the second cartridge in the first mounting portion, the entire case including the mounting module including the mounting structure has the same specifications. However, it is possible to prevent erroneous mounting simply by changing the length and diameter of the connecting cylinder.

[0006]

As described above, according to the present invention, it is possible to surely prevent the erroneous mounting of the cartridge while reducing the cost by sharing the specification of the parts between the first cartridge and the second cartridge. If it becomes possible, especially when it is set forth in claim 2, it is easy to implement because it is only necessary to devise only the processing module which is originally different.

[0007]

[Example] An example of application to a stationary water purifier will be described. As shown in FIGS. 1 to 4, the stationary water purifier includes a faucet unit U1 attached to the faucet A and a water purifier unit U2.

As shown in FIGS. 5 to 7, the faucet unit U1 is connected to the faucet A at an upper portion thereof through a connecting and coupling means, and a water discharge portion is connected to a lower portion of the switching valve 1. Is internally configured in a case including an upper case 2 and a lower case 3. The upper case 2 and the lower case 3 are assembled into a single case by elastically engaging the recess of the upper case 2 of the claw 4 formed integrally with the lower case 3 and fastening it with a screw 5. A decorative plate 6 for an internal visual inspection window or for giving an accent to the appearance is fitted in a part of the portion. The water discharge part has a central main water discharge flow path 7 and an annular shower water discharge flow path 8 located around the main water discharge flow path 7. In addition, the main water discharge passage 7 and the shower water discharge passage 8 are separated from each other, and the baffle plate 9 that circumferentially disperses the water that has flowed into the shower water discharge passage 8 from above is screwed into the lower case 3. The shower cap 12 is mounted to form one discharge hole 10 from the main water discharge passage 7 and a large number of shower discharge holes 11 from the shower water discharge passage 8. The switching valve 1
Is a valve box 13, a rotary valve body 14 rotatably mounted in the valve box 13 around a horizontal axis, and a valve shaft 1 of the rotary valve body 14.
5 has an operation lever 16 mounted in a non-rotating state. The valve box 13 has a raw water inlet port AP1 communicating with the faucet A, a first outlet port AP2 communicating with the main discharge passage 7, and a second outlet port AP3 communicating with the shower discharge passage 8. A raw water outlet port AP4 and a purified water inlet port AP5 are formed. The raw water outlet port AP4 is connected to a raw water take-out pipe 17 which is connected at one end to a raw water hose H1 for supplying raw water to the water purifier unit U2, and the purified water inlet port AP5.
Is a clean water receiving pipe 1 that is connected to the clean water hose H2 at one end.
8 is connected. And each of the ports AP1, AP
2, 2, AP3, AP4, AP5 are loaded with packing 19 for sealing the outer peripheral surface of the rotary valve body 14.
On the other hand, as shown in FIGS. 9 and 10, the rotary valve body 14 communicates with the raw water inlet port AP1 and the first outlet port AP2 in a state of being in the first rotational posture with respect to the valve box 13, and A first water passage AR1 for communicating a second outlet port AP3 with the raw water inlet port AP1 in a second rotational posture rotated in one direction from the first rotational posture;
As also shown in FIG. 11, a raw water extraction water channel that connects the raw water inlet port AP1 to the raw water outlet port AP4 in a state in which the raw water inlet port AP1 communicates with the raw water inlet port AP1 in the third rotational posture in which the first rotational posture is rotated in the direction opposite to the second rotational posture. AR2 and a purified water channel AR3 for communicating the first outlet port AP2 with the purified water inlet port AP5 in the state of the third rotation posture are also formed (see also FIG. 8). Therefore, the faucet unit U1 is shown in FIG.
As shown in FIG. 10, by rotating the rotary valve body 14 of the switching valve 1 to the first rotation posture, the raw water straight state in which the raw water from the faucet A is discharged as it is at a thick flow velocity is revealed, and is shown in FIG. Thus, by rotating the rotary valve body 14 of the switching valve 1 to the second rotation posture, the faucet A
The raw water shower state in which the raw water from the tap water is discharged in the shower state is revealed, and the raw water from the faucet A is passed through the raw water hose H1 by rotating the switching valve 1 to the third rotation posture as shown in FIG. The water is supplied to the water purifier unit U2, and the water purification hose H2 is supplied from the water purifier unit U2.
It is configured to show a purified water state in which the purified water returned through the is discharged. It should be noted that the rotary valve body 14 is for a detent that holds the rotary valve body 14 in each of the above-described rotational postures by engaging a recess formed in the inner peripheral surface of the valve box 13 through the elastic force of a spring. Ball 20 is incorporated. Further, the raw water take-out pipe 17 is equipped with a safety valve 21 which is opened to release pressure when the flow path resistance on the downstream side exceeds a set value, that is, to release raw water to the outside. Further, a convex lens-shaped display window 22 for visually observing the inside from the outside is formed in the upper case 2,
A bowl-shaped display member 23 is attached to the valve shaft 15 so as to rotate integrally therewith, and corresponds to the display window 22 when the rotary valve body 14 of the display member 23 is in each rotation posture. A mark indicating the rotational posture of the rotary valve body 14 is attached to a part, that is, a part visible from the display window 22.

The water purifier unit U2 is shown in FIGS.
4, the water purifier body 24 and the water purifier body 2
4 is provided with two removable first and second water treatment cartridges K1 and K2 and a cover C, and an erroneous mounting preventing means. First, the cartridges K1 and K2 will be described.

As shown in FIG. 18, the first cartridge K1 has a case 25 in which a cylindrical molded fiber activated carbon module 26 for water treatment is surrounded by a central space 1S.
1 and an annular space 1S2 around the interior of the case 25 so as to partition the interior of the case 25. The molded fiber activated carbon module 26 is attached to the water purifier main body 24 in a vertical position so that the axis of the module 26 extends in the vertical direction. In the mounted state, water is introduced from one of the spaces 1S1 and 1S2 through the molded fiber activated carbon module 26 in the wall thickness direction to reach the other to purify the water. Case 25
Is composed of a container-shaped main body member 27 and a lid member 28 screwed into the lower end opening of the main body member 27. The fixing means of the molded fiber activated carbon module 26 to the case 25 is restricted from moving upward with respect to the case 25 by a plurality of circumferential rib portions 29 integrally formed on the inner peripheral surface of the main body member 27, and at the same time, the main body member. A pressing plate 30 whose downward movement with respect to the case 25 is restricted by a lid member 28 attached to the case 27 is provided, and the pressing plate 30 and the top plate portion of the main body member 27 sandwich the pressing plate 30 from above and below with respect to the case 25. And the lower end is fitted to the pressing plate 30, and the upper end is engaged with the restriction part 31 integrally formed on the top plate part of the main body member 27 at intervals in the circumferential direction. It is means for fixing the case 25 in the lateral direction <radial direction> by stopping. The molded fiber activated carbon module 26 is configured by stacking two molded fiber activated carbons 32 in a concentric state in the axial direction, and disposing a seal 33 which also serves as a frame between the end faces thereof. The seal 33 allows water to pass through the boundary between the upper and lower surfaces that come into contact with the upper and lower end surfaces of the molded fiber activated carbon 32 and the upper and lower end surfaces of the molded fiber activated carbon 32, and the water 1S
Molded fiber activated carbon 32 that goes back and forth between 1 and 1S2
Of the water-blocking projections 34, which are prevented by biting into the upper and lower end faces of the mold, and a plurality of circumferential directions, which abut on the upper and lower end peripheral faces of the molded fiber activated carbon 32 to prevent lateral displacement of the ends. Is integrally molded into a structure having a position regulation projection 35 and a plurality of circumferential stays 36 that come into contact with the inner peripheral surface of the body member 27 and regulate the lateral position with respect to the body member 27. Then, the tubular portion 37 is provided at the center of the pressing plate 30.
Are integrally formed in a state of protruding downward to form an external central water inlet / outlet channel 38 with respect to the central space 1S1, and the lid member 2 is provided in the annular space 1S2 at the peripheral portion of the pressing plate 30.
8 is formed with a communication hole 39 for communicating an annular space between the tubular portion 37 and the tubular portion 37, and the annular space is opened downward in the center of the lid member 28 with the tubular portion 37 facing downward. The communication hole 40 to be formed is formed concentrically with the tubular portion 37, and an external annular water inlet / outlet channel 41 for the annular space 1S2 is formed around the tubular portion 37. The tip portion of the lid member 28 forming the communication hole 40 is formed into a tubular shape. In addition, the pressing plate 30 and the main body member 27
The water blocking projections 42 and 43, which function in the same manner as described above, are also integrally formed on the top plate portion of the above. A rod-shaped hydrophobic ventilation member 44 is installed at the upper end of the upper part of the molded fiber activated carbon 32 such that one end thereof faces the central space 1S1 and the other end faces the annular space 1S2. In addition, the molded fiber activated carbon 32 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 hydrophobic ventilation member 44 is 7 kg / c when considering general use.
It is preferable to have a hydrophilic pressure of m ² or more, but the hydrophilic pressure is appropriately selected according to the use conditions and the like.

The second cartridge K2 has a case 4
5, a structure in which a hollow fiber membrane module 46 for water treatment is internally installed in a state in which a case 45 communicating with each other at the upper portion is partitioned into a central space 2S1 and an outer peripheral annular space 2S2, Water is introduced from one of the spaces 2S1, 2S2 through the hollow fiber membrane module 46 to reach the other to purify the water. The case 45
Has the same structure as the case 25 of the first cartridge K1, that is, a container-shaped main body member 27, and the main body member 2
7 and a lid member 28 that is screwed into the lower end opening. The fixing means for fixing the hollow fiber membrane module 46 to the case 45 is the lid member 2 attached to the regulating portion 31 and the main body member 27.
It is fixed to the case 45 in the up-down direction << axial direction >> by sandwiching it from the up-down direction with 8, and the lower end portion is fitted to the lid member 28, and the upper end portion is locked to the restricting portion 31. It is a means for fixing in the lateral direction <radial direction> with respect to 45. The hollow fiber membrane module 46 is provided with a container-shaped frame 47 which is fixed to the case 45 and is formed by partitioning the annular space 2S2 and the central space 2S1 in communication with each other at the upper end.
The bonded member 4 that holds a large number of hollow fiber membranes 48
9 is installed so that the upper end opening of the frame 47 is closed and the hollow fiber membrane 48 is arranged in the frame 47. The frame 47 includes a cylinder 50 and a lid 51 that closes the lower end opening thereof. The hollow fiber membrane 48 of the hollow fiber membrane module 46 and the central space 2S1 in which the hollow fiber membrane 48 is installed are configured such that the volume of the hollow fiber membrane 48 is 60 to 90% of the volume of the space 2S1. The tubular portion 52 is integrally formed in the central portion of the lid 51 so as to project downward, and an external central water inlet / outlet channel 53 for the central space 2S1 is formed. A communication hole 40 for opening the annular space to the lower outside in a state where the tubular portion 52 is exposed to the outside at the center is formed concentrically with the tubular portion 52, and an external annular water inlet / outlet path for the annular space 2S2 is formed. 54 is formed around the cylindrical portion 52. Of course, similarly to the above, the tip portion of the lid member 28 forming the communication hole 40 is formed in a tubular shape. In addition, the frame 47 is provided with a water inflow / outflow regulating pipe 55 that connects a relatively high portion of the central space 2S1 formed from the inside of the frame 47 to the central water inflow / outflow path 53.

As shown in FIGS. 16 and 17, the water purifier body 24 has a first mounting portion 56 and a second cartridge K2 for detachably mounting the first cartridge K1 on the upper surface thereof. A second mounting portion 57 for freely mounting is provided, and a case including an upper case 58 and a lower case 59 is equipped with a flow path.

The first mounting portion 56 has a cylindrical connection port portion 60 on the top plate of the upper case 58, into which the distal end cylindrical portion of the lid member 28 of the cartridge K1 is rotatably inserted around its axial center. A plurality of circumferential pressing pieces for fixing the lid member 28 to the upper case 58 by sandwiching the mounting plate 61, which is formed integrally with the lid member 28 at intervals in the circumferential direction, with the upper surface of the upper case 58 from above and below. 62 is formed integrally with the upper case 58. That is, the distal end tube portion of the lid member 28 is inserted into the connection opening 60 until the attachment plate 61 contacts the upper surface of the upper case 58 so that the attachment plate 61 does not contact the pressing piece 62, and the lid member 28 is held in that state. The cartridge K1 is mounted by an operation that is rotated around the axis and inserted between the pressing piece 62 and the upper surface of the case, and is detached by an opposite operation. And the first mounting portion 56
Has a rotation restricting portion 63 that is in contact with the mounting plate 61 and restricts the posture of the lid member 28 around the axis with respect to the upper case 58, and a cam portion 64 that lifts the mounting plate 61 that rotates in the detaching direction upward. . The second mounting portion 57 is the first mounting portion 56.
It has the same structure as.

The main components of the flow path are the connecting pipe unit 65, the water / reverse cleaning switching valve 66, the first connecting member 67 for the first cartridge K1, and the second connecting member K2 for the second cartridge K2. And the connecting member 68.

The connection pipe unit 65 is connected at one end to the raw water hose H1, a raw water inlet pipe 69, at one end to the purified water hose H2 at a purified water outlet pipe 70, and at one end to a drain hose H3. It is integrally formed with the drain pipe 71 and is attached to the upper case 58. The raw water inlet pipe 69 is equipped with a float valve body 72 that comes into contact with a small diameter portion formed in the raw water inlet pipe 69 to prevent backflow.

The clean water / backwash switching valve 66 is provided with a valve box 73.
And a rotary valve body 74 rotatably mounted in the valve box 73 so as to be rotatable around the horizontal axis, and an operating means of the rotary valve body 74.

As shown in FIGS. 19 and 20, the valve box 73 has first and second inlet ports LP1 and LP2.
And the first to third outlet ports LP3, LP4, LP5
And an entrance / exit port LP6. As shown in FIG. 19 and FIG. 20, the rotary valve body 74 has a first position when the rotary valve body 74 is in the first rotation posture.
Of the first water passage LR1 for communicating the inlet / outlet port LP6 with the inlet port LP1 of the first inlet port LP1 and the second outlet port LP2 to the second inlet port LP2 with the rotary valve body 74 in the first rotation posture.
The second water channel LR2 for communicating the three and the rotary valve body 74 are the second
The third water passage LR3 for communicating the second outlet port LP4 with the first inlet port LP1 in the rotating posture, and the inlet / outlet port LP in the state where the rotary valve body 74 is in the second rotating posture.
4th water channel LR which connects 3rd exit port LP5 to 6
4 are formed. The first and second inlet ports LP1 and LP2, the first and second outlet ports LP
3, LP4 is equipped with a packing 75 for contacting and sealing the peripheral surface of the rotary valve body 74, the purified water outlet pipe 70 is connected to the first outlet port LP3, and the third outlet port is connected. A drain pipe 71 is connected to LP5.

The operating means is, as shown in FIG.
A disc-shaped operating body 77 is attached to the valve shaft 76 of the rotary valve body 74 in a non-rotating state, and engages a pin 78 attached to the operating body 77 at its lower end to slide the operating body 77 downward. A lower rod 79 that rotates from the first rotation posture to the second rotation posture is provided, and a return spring 80 that gives an upward return force to the lower rod 79 is provided.
An operation tool 82 for pushing the 9 downward through the upper rod 81 is provided. That is, the operation tool 8
The rotary valve body 74 is automatically returned from the second rotation posture to the first rotation posture by releasing the operation on the second rotation posture. The components except the upper rod 81 and the operating tool 82 are incorporated in the water purifier body 24.

The first connecting member 67 is a connecting portion 83 for inserting and connecting to the connecting port portion 60, and a connecting portion for inserting and connecting the cylindrical portion 37 of the first cartridge K1 with the attachment to the first mounting portion 56. 84, and the raw water inlet pipe 6
9 and the first inlet port LP1 of the valve box 73 of the water purification / backwash switching valve 66 to connect the inside of the raw water inlet pipe 69 to the annular inlet / outlet channel 41 of the first cartridge K1. The central water inlet / outlet channel 38 of the first cartridge K1 is connected to the first inlet port LP1 for communication, and is attached to the upper case 58. The second connecting member 68 has an outer peripheral connecting portion 85 that is inserted and connected to the connecting port portion 60, and the second attaching portion 57.
Connection part 86 for inserting and connecting the tubular portion 52 of the second cartridge K2 with the mounting of the second cartridge K2, and the inlet / outlet port LP6, the second inlet port LP2, and the second outlet port of the water purification / backwash switching valve 66. By connecting to each of the LP4, the inlet / outlet port LP6 of the water purification / backwash switching valve 66 is connected to the central inlet / outlet channel 53 of the second cartridge K2, and the second cartridge K2 is connected.
The second inlet port LP2 and the second outlet port LP4 of the purified water / backwash switching valve 66 are connected to the annular inlet / outlet channel 54 for communication, and are attached to the upper case 58.

Therefore, in this water purifier unit U2, the raw water sent from the faucet unit U1 through the raw water hose H1 is referred to as << 1 >> as shown in FIG. In the state in which 74 is switched to the first rotation posture, the raw water inlet pipe 69, the first connecting member 67, the annular space 1S2 of the first cartridge K1, the molded fiber activated carbon module 26, the central space 1S1, and the first connecting member 6
7, first inlet port LP of water purification / backwash switching valve 66
1, the inlet / outlet port LP6 of the clean water / backwash switching valve 66,
Second connection member 68, central space 2S1 of second cartridge K2, hollow fiber membrane module 46, annular space 2S
2, the second connecting member 68, the second inlet port LP2 of the purified water / backwash switching valve 66, the first outlet port LP3 of the purified water / backwash switching valve 66, the purified water outlet pipe 70, and the order of flow thereof, While being processed by the cartridges K1 and K2 and returned as purified water to the faucet unit U1 via the purified water hose H2, << 2 >> As shown in FIG. 20, from the above state, the rotary valve body of the purified water / backwash switching valve 66 In the state in which 74 is switched to the first rotation posture, the raw water inlet pipe 69, the first connecting member 67, the annular space 1S2 of the first cartridge K1,
Molded fiber activated carbon module 26, central space 1S1, first connecting member 67, first inlet port LP1 of purified water / backwash switching valve 66, second outlet port LP4 of purified water / backwash switching valve 66, second connection The member 68, the annular space 2S2 of the second cartridge K2, the hollow fiber membrane module 46,
Central space 2S1, second connecting member 68, inlet / outlet port LP6 of water purification / backwash switching valve 66, third outlet port L
P5, drainage pipe 71, and the flow in that order, are processed by the first cartridge K1, and then the hollow fiber membrane module 46 of the second cartridge K2 is backwashed and discharged through the drainage hose H3. That is, the state of << 1 >> is the purified water supply state, and the state of << 2 >> is the hollow fiber membrane module 4
This is a state in which 6 is backwashed.

The cover C is in the form of a container,
The water purifier body 2 is mounted by fitting the lower end portion into the upper end step portion of the upper case 58 of the water purifier body 24.
It covers the two cartridges K1 and K2 mounted on the cover 4, and the upper case 58 is automatically engaged with the hole 87 formed in the cover C by the upper engagement portion 88 when the cover C is fitted. The engaging piece 89 for preventing the slip-off is integrally formed in a state of protruding upward, and the upper engaging portion 88
Is a pressing operation part for releasing the engagement. Further, the operating tool 82 of the operating means is attached to the cover C in a state of forming a part of the upper portion of the cover C, and the upper rod 81 is attached to the inner surface of the cover C. 90 is an operation tool 8
2 return spring.

The diameter of the erroneous mounting preventing means, the cylindrical portion 52 of the second cartridge K2 and the corresponding connecting portion 86 of the second connecting member 68 is set to the cylindrical portion 37 of the first cartridge K1 and the corresponding first connecting portion. The diameter of the connecting portion 84 of the member 67 is set larger than the diameter of the connecting portion 84 of the first cartridge K1, and the insertion depth of the cylindrical portion 37 of the first cartridge K1 into the connecting portion 86 of the cylindrical portion 52 of the second cartridge K2 is inserted into the connecting portion 86. The contact surfaces 91, 92 that are deeper than the depth and contact the tips of the cylindrical portions 37, 52 corresponding to the respective connection portions 84, 86 to regulate the insertion depth are formed. Therefore, the second cartridge K to the first mounting portion 56
The erroneous mounting of No. 2 is prevented by the cylindrical portion 52 not being able to be inserted into the connecting portion 84, and the first cartridge K to the second mounting portion 57 is prevented.
The erroneous mounting of No. 1 is prevented by not inserting the tubular portion 37 into the connecting portion 86 with a predetermined depth. An O-ring 93 seals between the first connecting member 67 and the upper case 58 and between the second connecting member 68 and the upper case 58,
Reference numeral 94 is an O-ring for sealing between the lid member 28 and the upper case 58, and an O-ring for sealing is provided at a connecting portion of each part.

In the above embodiment, the first cartridge K1
With a molded fiber activated carbon module 26 as
The hollow fiber membrane module 46 is used as the second cartridge K2.
Although the first cartridge K1 is provided with the hollow fiber membrane module 46, the second cartridge K2 can be applied to a water purifier configured with the molded fiber activated carbon module 26. The present invention can also be applied to a water purifier in which a large one is filtered out by the first cartridge K1 and a small one is filtered out by the second cartridge K2. In short, the present invention can be applied to all water purifiers that include two types of cartridges K1 and K2 and that are configured to process water in order. Further, in the above-described embodiment, the diameter of the connecting portions 84 and 86 and the insertion depth are made different so that the first cartridge K1.
To the second mounting portion 57 and the second cartridge K2
Although it is configured so as to prevent the attachment to the first attachment portion 56, the specific configuration of the erroneous attachment prevention means can be appropriately changed.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations 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 stationary water purifier.

FIG. 2 is a schematic sectional view showing a raw water shower state of a stationary water purifier.

FIG. 3 is a schematic cross-sectional view showing a purified water supply state of a stationary water purifier.

FIG. 4 is a schematic cross-sectional view showing a backwash state of a stationary water purifier.

FIG. 5 is a vertical sectional side view showing a faucet unit.

FIG. 6 is a transverse plan view showing the faucet unit.

FIG. 7 is a vertical sectional front view showing a faucet unit.

FIG. 8 is a perspective view of a rotary valve body.

FIG. 9 is a sectional view of a rotary valve body showing a straight state of raw water.

FIG. 10 is a sectional view of a rotary valve body showing a raw water shower state.

FIG. 11 is a sectional view of a rotary valve body showing a purified water state.

FIG. 12 is a vertical sectional front view showing the water purifier unit.

FIG. 13 is a transverse plan view showing the water purifier body of the water purifier unit.

FIG. 14 is a cutaway side view showing the water purifier unit.

FIG. 15 is a sectional view showing an operating means.

FIG. 16 is a vertical cross-sectional view of a main part showing a state in which the water purifier body and the cartridge are separated from each other.

FIG. 17 is a plan view of the water purifier body

FIG. 18 is an exploded perspective view showing a first cartridge.

FIG. 19 is a cross-sectional view showing a purified water state of the purified water / backwash switching valve.

FIG. 20 is a cross-sectional view showing a backwash state of the clean water / backwash switching valve.

[Explanation of symbols]

 K1 1st cartridge K2 2nd cartridge 56 1st mounting part 57 2nd mounting part 24 Water purifier main body

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

Claims (2)

[Claims] 1. A first unit for detachably mounting each of first and second cartridges (K1), (K2) for water treatment.
A water purifier body (24) having an attachment portion (56) and a second attachment portion (57) is provided, and water is introduced to purify the first cartridge (K1) and the second cartridge (K2) and in that order for purification. A water purifier configured to process,
The second cartridge (K) to the first mounting portion (56)
A water purifier provided with erroneous mounting prevention means for preventing mounting of (2) and mounting of the first cartridge (K1) to the second mounting portion (57). 2. A mounting means for mounting the first cartridge (K1) on the first mounting portion (56), and a second cartridge (K).
In order to configure the mounting means to the second mounting portion (57) of 2) to be the same and to configure the erroneous mounting preventing means, the mounting operation of the first cartridge (K1) to the second mounting portion (57) is performed. The connection structure between the water purifier body (24) and the first cartridge (K1) and the water purification so as to prevent the mounting operation of the second cartridge (K2) to the first mounting portion (56) Container body (24) and second cartridge (K2)
The water purifier according to claim 1, wherein the connection structure with the water purifier is different from each other.