JPH11253936A - Water purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water purifier which enables easy cartridge replacement work without dirtying the surroundings. SOLUTION: In a water purifier 10, first a lid member 52 is removed from an outer case 12 when a cartridge 26 is replaced. Next, the cartridge 26 is taken out from the outer case 12. In this operation, water left in the cartridge falls from channels 30A, 32A. Since the fallen water falls into the outer case 12 (on a base material 14) and is prevented from leaking outside, the surroundings are not dirtied. The cartridge 26, after being drained, is moved to a prescribed position. A new cartridge 28 is inserted into the outer case 12 and connected with a channel by inserting engaging projections 30, 32 into holes 33, 35. Moreover, by closing the lid member 52, a contact part 55 pushes down the cartridge 26 to fix it to the base material 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifier having a structure in which water sent from a faucet by a hose is passed, filtered, and returned to the faucet.

[0002]

2. Description of the Related Art In recent years, there has been an increasing demand for safe drinking water, and water purifiers have been used so that safe drinking water can be obtained effectively even in regions and periods where the water quality is relatively poor. .

For example, a solid filter such as red rust in tap water is rubbed with a prefilter provided in front of a water purification cartridge, and when the solid filter becomes clogged, the prefilter is replaced with a new one to prevent the water purification cartridge from being clogged. 2. Description of the Related Art A filter-type water purifier that removes impurities in water with an activated carbon layer or the like and then scrapes bacteria with an ultra-fine filter such as a hollow fiber membrane is known.

On the other hand, a two-way type water purifier in which a water purifier main body and a water tap are connected by a water outlet hose and a water inlet hose does not have a restriction that the water purifier main body is attached to the faucet, so that high performance can be easily achieved. In addition, it is convenient and popular because purified water can be obtained from a tap.

[0005]

Although there are many water purifiers that exhibit excellent water purifying performance, solid components such as red rust contained in tap water stop inside the water purifier as the filtration function is improved. Therefore, the filtering function decreases with time. Therefore, after a lapse of a predetermined period, the cartridge provided with the filter medium is removed from the casing and replaced.

[0006] In the case of a two-way type water purifier, when the cartridge is mounted on the base member, the water inlet passage and the water outlet passage of the base member connected to the tap by a hose and the filter passage of the cartridge are connected in a watertight manner. It is necessary to securely fix the cartridge so as not to be separated from the base member by water pressure, but it is also desirable that the attachment and detachment be simple.

Further, when the cartridge is removed from the base member, water remaining inside the cartridge may leak out of the filtration passage and contaminate the periphery of the water purifier.

It is therefore an object of the present invention to provide a water purifier capable of easily and surely replacing a cartridge.

[0009]

According to the first aspect of the present invention, there is provided a cartridge having a filter member disposed therein, a base member to which the cartridge is detachably connected, and from which raw water and filtered water flows in and out. A casing that encloses the base member in a watertight state and contains the cartridge therein, and an openable and closable lid member provided at a cartridge entrance and exit of the casing, wherein the lid member is closed by closing the lid member. The present invention is characterized in that the cartridge abuts on the cartridge and the cartridge is fixed to the base member.

The operation of the first aspect of the present invention will be described. The used cartridge can be removed from the base member simply by opening the lid member and pulling it out of the casing. Just by inserting a new cartridge into the casing and closing the lid member, the lid member comes into contact with the cartridge and is fixed to the base member. Therefore, replacement of the cartridge can be performed very easily and reliably. Further, even if water pressure is applied to the cartridge during water purification, the cartridge is fixed by the lid member, so that the connection state of the water channel does not deteriorate due to being separated from the base member.

According to a second aspect of the present invention, in the first aspect of the present invention, the lid member is provided at an upper portion of the casing, and the cartridge is withdrawn from the casing in an upward direction.

The operation of the second aspect of the present invention will be described. When removing the cartridge from the casing,
Water may fall from the passage inside the cartridge. However, since the lid member is provided at the upper part of the casing and the cartridge is drawn out in the upward direction of the casing, the water that has fallen remains inside the casing and does not pollute the surroundings.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the water purifier of the present invention will be described with reference to FIGS.

FIG. 2 shows a water purifier 10 according to this embodiment. A cylindrical outer case 12 constituting an outer frame of the water purifier 10
The base of the disk-shaped base material 1 formed of a resin material
4 is fixed to the outer case 12 made of resin in a watertight manner. As shown in FIG. 3, the base material 14
A water inlet passage 16 is formed extending from the portion near the outer periphery to the outer periphery side.
The water hose 96 from the faucet unit 62 attached to the outlet 0 is connected (see FIG. 1).

The base member 14 has a base member 1
A water outflow passage 22 extending from the center of the water supply passage 4 to the outer peripheral side in parallel with the water inflow passage 16 is formed. At an end of the water outflow passage 22, a water inlet for removing water purified by the water purifier 10 from the water purifier 10. The hose 98 will be connected.

Further, a ring-shaped rubber pedestal 18 is attached to the lower side of the outer case 12 and the base member 14. In the hollow part of the pedestal 18, the water inlet passage 1
6. Drain valves 19, 2 for draining water from the water discharge passage 22
0 is formed.

A cartridge 26 is provided inside the outer case 12.
Is stored. The cartridge 26 has a resin cartridge case 28 formed in a cylindrical shape and having a bottom wall 28A integrally provided on the lower side. This bottom wall 28A
Have a circular shape and a flow path 30 inside each.
Fitting projections 30 and 32 having A and 32A are formed, respectively. The fitting projections 30 and 32 are fitted into holes 33 and 35 formed at the ends of the water inlet passage 16 and the water outlet passage 22 of the base member 14, respectively. The positions and diameters of the fitting projections 30 and 32 of the cartridge case 28 and the holes 33 and 35 of the base material 14 are precisely formed so that they can be attached and detached with one touch. Further, O-rings 34 are attached to the outer peripheral surfaces of the fitting projections 30 and 32,
Water is prevented from leaking from the fitting portion.

A hollow fiber membrane module 36 having a large number of built-in hollow fiber membranes and formed in a cylindrical shape is disposed below the inside of the cartridge case 28. The hollow fiber membrane module 36 is supported by a bracket 40 fitted to the cartridge case 28, and is provided between the hollow water membrane module 36 and the inner peripheral surface of the cartridge case 28.
9 are formed.

Above the hollow fiber membrane module 36 in the cartridge case 28, a ring-shaped sintered filter 42 having fine holes therein is provided. In a cylindrical space above the sintered filter 42, a first filter medium 44 formed of granular activated carbon and a second filter medium 46 formed of fibrous activated carbon are sequentially arranged. I have. That is, the first filter medium 44 and the second filter medium 46 are supported by the sintered filter 42.

At the center of the filter media 44, 46, a condensate pipe 54 extending vertically is arranged. This condensing pipe 54
A through-hole 54A is formed in the lower part of. That is,
The water that has passed through the second filter material 46 falls into the condenser 54,
Water is fed into the hollow fiber membrane module 36 formed in a cylindrical shape through the through hole 54A. Therefore, bacteria are removed from the water sent from the condenser 54 by the hollow fiber membrane, and the hollow fiber membrane module 36 is removed.
Will be discharged from the bottom of the

On the other hand, a resin-made cartridge cap 58 is fixed to the upper portion of the cartridge case 28 by ultrasonic bonding or the like. The cartridge cap 58 has an air break valve 56 in which a ball 56A is disposed so as to be vertically movable and has a hole 56B penetrating upward.
is set up.

Further, a cover member 52 is screwed into a screw portion 51 formed at the upper end of the outer case 12. The lid member 52 has a knob 53 extending in the radial direction at an upper portion thereof, and a contact portion 55 is formed continuously with the knob 53. The cover member 52 covers the opening of the outer case 12, and the contact portion 55 pushes down the cartridge cap 58 of the cartridge 26 to lower the bottom wall 28 </ b> A on the base material 1.
4 to securely fix the cartridge 26 in the outer case 12.

With such a configuration, the water that has entered the water purifier 10 through the water inlet passage 16 is supplied to the flow passage 30A of the fitting projection 30.
After flowing through the cartridge case, the outer peripheral surface of the hollow fiber membrane module 36 disposed below the cartridge 26 and the cartridge case 2
8 will flow into the water passage 29 between the inner peripheral surface 8 and the inner peripheral surface.

Thereafter, the water flows into the sintered filter 42 so as to enter, and comes out from the upper surface of the sintered filter 42. At this time, solid components such as red rust in the water are filtered. As the filtered water passes through the first filter medium 44 and the second filter medium 46, trihalomethane and chlorine are further removed by the first filter medium 44 and the second filter medium 46 is removed. Removes chlorine and musty odor.

The water filtered by the second filter medium 46 enters the condenser pipe 54 from the upper end of the condenser pipe 54, passes through the condenser pipe 54, and further passes through the through hole 54A.
The bacteria enter into 6 and are removed.

Finally, the water that has passed through the bracket 40 passes through the flow passage 32A of the fitting projection 32 and is taken out of the water discharge passage 22. That is, when water flows into the water purifier 10 from the water inlet passage 16, the filtered water is sent out from the water outlet passage 22.

Next, the operation of the water purifier 10 according to this embodiment, that is, the replacement of the cartridge 28 will be described.

First, drainage is performed. When the water pressure in the water purifier 10 is reduced by closing the tap, the drain valves 19 and 20 and the air break valve 56 are opened. As a result, air is introduced into the cartridge 26 from the air break valve 56, and water remaining in the cartridge 26 (filters 44 and 46, the hollow fiber membrane module 36, and the like) is removed from the water inlet passage 16 and the water outlet passage 22. Through the drain valves 19 and 20 to the outside.

Next, the cartridge 28 is replaced. FIG.
As shown in (2), the cover member 52 is removed from the outer case 12 by pinching and rotating the knob 53 of the cover member 52 with a finger. Next, as shown in FIG. 5, the portion of the air break valve 56 of the cartridge 26 is grasped and extracted to the upper part of the outer case 12. At this time, the flow paths 30A, 32 of the fitting projections 30, 32 extracted from the holes 33, 35 of the base material 14 are formed.
Water remaining in the cartridge 26 from A falls. The water that has fallen accumulates on the base material 14 that forms the bottom of the outer case 12 and does not leak to the outside.
It does not stain around 0. Used cartridge 26
Is moved to a predetermined position after draining.

Subsequently, a new cartridge 26 is inserted into the outer case 12. At this time, the fitting projections 30, 32
The channels 30A and 32A can be connected to the water inlet passages 16 and 22 simply by inserting them into the holes 33 and 35 of the base material 14.
Moreover, since the fitting projections 30 and 32 and the holes 33 and 35 are precisely formed so as to be detachable with one touch, the holes 33 and
A watertight connection can be achieved simply by inserting the fitting projections 30 and 32 into 35 and sealing them with the O-ring 34.

Thereafter, the lid member 52 is screwed into the outer case 12. At this time, the contact portion 55 is
(Cartridge 26) is pressed downward. As a result,
The bottom wall 28A of the cartridge 26 is pressed against the base member 14, and the cartridge 26 is
Upper).

Therefore, even if an upward force (a direction away from the base member 14) acts on the cartridge 26 due to the water pressure during the purified water, the cartridge cap 58 is kept in contact with the abutting portion 5.
Since the cartridge 5 is pressed to fix the cartridge 26, there is no deviation.

Further, the cartridge can be replaced simply by opening and closing the lid member 52 and attaching and detaching the cartridge 26, and the cartridge 26 can be easily replaced without a special jig.

[0034]

According to the first aspect of the present invention, the cartridge is easily exchanged (detachable).

According to the second aspect of the present invention, since the above-described configuration is adopted in the first aspect, the cartridge can be replaced without soiling the surroundings.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a water purifier according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the water purifier according to the embodiment of the present invention.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is a perspective view of a lid member of the water purifier according to the embodiment of the present invention.

FIG. 5 is a perspective view for explaining cartridge replacement of the water purifier according to the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 water purifier 12 outer case (casing) 14 base material (base member) 26 cartridge 36 hollow fiber membrane module (filter material) 42 sintered filter (filter material) 44 first filter material (filter material) 46 second filtration Material (filter material) 58 Lid member

Claims (2)

[Claims] 1. A cartridge having a filter medium disposed therein, a base member to which the cartridge is detachably connected, and from which raw water and filtered water flows in and out, and a watertight state surrounding the base member, and the cartridge inside. And a cover member provided at the cartridge entrance and exit of the casing, which can be freely opened and closed. By closing the cover member, the cover member comes into contact with the cartridge, and the cartridge is fixed to the base member. Water purifier characterized by making it. 2. The water purifier according to claim 1, wherein the lid member is disposed at an upper portion of the casing, and the cartridge is pulled out from the casing in an upward direction.