JP2003117546A - Water cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water cleaner capable of easily and quickly performing attaching and detaching when exchanging, or the like, of a cartridge without hardly receiving an influence of the pressure contact force action by a sealing member. SOLUTION: An O-ring 12 is provided between the outer peripheral surface of a supporting body 9 at the upper part of the cartridge 2 housed in a water cleaner body 24 and the inner peripheral surface of an upper cover 26 and a circumferential space of the O-ring 12 is closed watertightly. A regulating member 31 is supported at the upper cover 26 right above the supporting body 9 of the cartridge 2 and a circular abutting part 11 of the supporting body 9 is engaged to the regulating member 31 and the displacement of the cartridge is prevented even if the cartridge is displaced in a water discharge direction by the water pressure at the time of water cleaning action.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifier in which a cartridge containing a filter for purifying water is detachably attached to a water purifier body.

[0002]

2. Description of the Related Art Conventionally, in this type of water purifier, after assembling the water purifier or replacing the cartridge, it is necessary to prevent water leakage between one end of the water discharge side of the cartridge and the water purifier body. It is designed to be closed in a watertight state. Then, as an example of the closed structure, a screw portion is provided on the outer peripheral surface of one end portion of the cartridge on the water discharge side,
In addition, a lid part that constitutes a part of the water purifier main body is provided with a screw part that is screwed into the screw part of the cartridge, and an O-ring is provided between the one end part of the cartridge and the lid part in the screw part. A seal member made of, for example, is interposed and the seal member is deformed against the elastic force when the screw portions are screwed to each other so as to be closed in a watertight state, or on the water discharge side of the cartridge. In order to press the holding plate for holding the fitting between the discharge port provided at one end and the discharge pipe connector to the cartridge side, the holding plate is screwed onto the thread portion of the outer peripheral surface of the water discharge side end of the cartridge. A ring-shaped screw member, and a seal member made of an O-ring or the like is interposed between the ring-shaped screw member and the cartridge, and the ring-shaped screw member is screwed into the holding plate to attach the holding plate to the cartridge. Together held down to, like the sealing member that so as to close in a watertight state by deforming against its resilience between the cartridge is known.

Further, a seal member such as an O-ring is interposed between the outer peripheral surface of one end of the water discharge side of the cartridge and the inner peripheral surface of the water purifier body for tightening on the outer peripheral surface of the water purifier body. By providing the band member and tightening the band member, the seal member is deformed against the elasticity between the outer peripheral surface of the cartridge and the inner peripheral surface of the water purifier body to close in a watertight state. It is also known to do so.

[0004]

Like the former one, the closed structure in which the sealing member is deformed against the elastic force by screwing and is closed in a watertight state is used in the water purification operation. It is common that the screws are strongly tightened beforehand so that water leakage due to high water pressure will never occur, and with such strong screws tightening the pressure contact force via the seal member, The seal member is effectively elastically deformed, and the water-tightly closed state is favorably maintained. However, when the screw is strongly tightened in this way, the elastic force generated from the elastically deformed seal member becomes larger, and this force acts on the screw thread of the threaded portion to cause a large friction. It will generate force. Therefore, in this state, when the cartridge or the ring-shaped screw member is rotated in the direction in which the screw is loosened when replacing the cartridge or the like, a very large force is required. Etc., its operation becomes difficult. Therefore, a dedicated tool for rotating the lid body and the ring-shaped screw member is required. Further, the latter closed configuration using the band member, since the band member protrudes outward from the outer peripheral surface of the water purifier body, while impairing the appearance of the water purifier, disassembly during replacement of the cartridge, It is pointed out that the assembly is complicated and requires much labor.

However, the present invention has been made in order to solve the above-mentioned problems, and can be easily and quickly attached / detached with the replacement of the cartridge without being affected by the pressure contact force of the seal member. The purpose is to provide a water purifier that can be implemented.

[0006]

In order to achieve the above object, a water purifier according to claim 1 of the present invention is a water purifier in which a cartridge having a filter body for purifying water is detachably attached to a water purifier body. In particular, between the outer peripheral surface at one end on the water discharge side of the cartridge and the inner peripheral surface of the water purifier body, a pressure contact force in a direction intersecting the water discharge direction acts on both peripheral surfaces. A seal member is provided to close the both circumferential surfaces of the cartridge in a watertight manner, and one end of the cartridge on the water discharge side is opposed to the one end of the cartridge on the water discharge side in the water discharge direction. In addition, a regulating member is provided for regulating the displacement of the cartridge in the water discharge direction due to the water pressure during the water purifying action.

According to the water purifier constructed as described above, the seal member is provided with the conventional screw between the outer peripheral surface at one end of the cartridge on the water discharge side and the inner peripheral surface of the water purifier body. Unlike the tightening type, it does not compress strongly, and it can reliably perform the original water-tight chain action, and can prevent its deformation for a long period of time to maintain the closing action. Displacement of the cartridge in the water discharge direction due to water pressure at the time is surely regulated by the regulation member, and even if the cartridge is displaced in the water ejection direction at the time of regulation, the seal member has a water sealing chain direction, In other words, since the force that causes the compressive deformation in the opposing direction of the both peripheral surfaces does not act, it does not affect the water-sealing action of the seal member.

The water purifier according to claim 2 is provided with a discharge port projecting in the water discharge direction at one end on the water discharge side of the cartridge, and the discharge port discharges purified water to the outside. A discharge pipe connector for connecting with the discharge pipe is fitted, and a press contact force in a direction intersecting the water discharge direction acts between the fitting faces of the discharge port and the discharge pipe connector to fit the fitting. It is characterized in that an auxiliary seal member for watertightly closing the surfaces is provided. Therefore, according to this configuration, even if the cartridge is displaced in the water discharge direction due to the water pressure during the water purifying action, the displacement of the cartridge is not affected at all, and the water sealing chain action by the seal member and the auxiliary seal member is ensured. Can be fulfilled.

The water purifier according to claim 3 is characterized in that the seal member and the auxiliary seal member are constituted by O-rings. Therefore, according to this structure, by applying the O-ring that is widely used as each of the sealing members, the water-tight chain action can be surely achieved, the cost of the water purifier can be reduced, and the assembling operation thereof can be performed. Can also be easy.

Further, in the water purifier of claim 4, when the regulating member is movably supported with respect to the inside of the water purifier body and is arranged at a predetermined first position of the movement, the water of the cartridge is Displacement in the ejection direction is regulated, and when the cartridge is placed at another predetermined second position, the regulation is released to allow the attachment / detachment of the cartridge. Therefore, according to this configuration, when the regulating member is moved and arranged at the predetermined first position, the displacement of the cartridge in the water discharge direction is regulated, and the cartridge is moved and arranged at the other predetermined second position. Then, since the regulation is released, the attachment / detachment of the cartridge can be permitted.

The water purifier according to claim 5 is characterized in that the regulating member is supported rotatably around the axis in the water discharge direction with respect to the inside of the water purifier body. Therefore, according to this configuration, it is possible to dispose the regulating member at the predetermined first position or the other predetermined second position by a simple operation of simply rotating the restriction member.

Further, in the water purifier of claim 6, when the regulating member is arranged at the first position, it is held in the water purifier body by a locking means provided between the regulating member and the water purifier body, and When it is arranged in the second position, it is configured to be detachable from the water purifier body. Therefore, according to this configuration, if the regulating member is arranged at the first position, it is held at this position by the locking member and does not accidentally move to the second position.
Displacement of the cartridge in the water discharge direction can be surely achieved, and if the regulating member is arranged at the second position, it will be irrelevant to the locking means. The cartridge can be easily removed from the container body, and the cartridge can be freely attached and detached.

Further, in the water purifier according to a seventh aspect of the present invention, the locking means is constituted by locking projections which can be engaged with each other when the regulating member is arranged at the first position. And Therefore, according to this structure, the locking means can be achieved by a simple structure in which the restricting member arranged at the first position and the water purifier body are provided with projecting locking projections facing each other.

Further, in the water purifier of claim 8, the locking means elastically frictionally engages with the locking projection of the water purifier body when the restricting member is moved to the first position. A holding member for holding the regulating member at the first position is included. Therefore, according to this configuration, when the locking member is arranged at the first position, the locking member itself is reliably restricted from being inadvertently moved by the holding member. It is possible to more reliably fulfill the displacement regulation.

Further, in the water purifier of claim 9, when the regulating member is moved to the first position, a stopper that engages with the locking projection of the water purifier body and stops the movement of the regulating member is provided. It is characterized by being provided. Therefore, according to this configuration, when the restriction member is moved from the second position to the first position, the stopper engages with the locking projection and cannot move any more even if the movement is performed randomly. The arrangement of the restriction member can be switched quickly and accurately.

The water purifier according to a tenth aspect of the invention is characterized in that the regulating member is provided with a finger-hanging portion on which a user's finger is hung in order to move the regulating member. Therefore, according to this configuration, when the regulating member is moved, it is possible to easily and surely perform a moving operation by placing a finger on the finger hook portion.

Further, in the water purifier of the eleventh aspect, the finger hook portion is constituted by a hole portion penetrating in the water discharge direction, and between the regulating member and one end portion of the cartridge on the water discharge side, It is characterized in that a space is provided corresponding to at least a locus drawn by the hole by the movement of the restriction member. Therefore, according to this configuration, when the regulating member is moved, it is hung so that fingers are put in the hole portion,
Moreover, when the regulation member is moved, since the inside is a space corresponding to the trajectory drawn by the hole, the tip of the finger is not caught by the cartridge or the like,
The movement of the restriction member can be performed more easily and reliably.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of the water purifier of this embodiment. The water purifier 1 of the present embodiment is used as a stationary type near a faucet of a tap water, and is generally a cartridge mainly composed of a block filter, a water purifier main body, a seal structure, a hollow fiber filter and a water purifying means. Etc.

The block filter 3 which is the main body of the cartridge 2 has fine holes (holes having a comma number of μm) as a whole.
And a sufficiently durable ceramic filter having a hollow cylindrical shape with the inner hollow portion 4 having both ends open at the center. This block filter 3 contains about 40 to 80% by weight of activated carbon fine particles and clay 2
0-60% by weight (about 2% by weight or more for this clay, about 3%
(A mixture containing less than 0% by weight of aluminum oxide is used), water in a weight ratio of 30 to 60% is added to knead and granulate, and the granulated raw material is pressed with a hydraulic press machine. After forming it into a hollow cylinder and drying it, about 10
It is the one that has been reduced and fired at 00 ° C to 1200 ° C. In addition,
The aluminum oxide is a general term for so-called alumina and activated aluminum.

The inner hollow portion 4 of the block filter 3
Is a large-diameter hollow portion 4A having a large inner diameter over a range slightly shorter than ½ of the overall axial length on the water discharge side, and an inner diameter of the large-diameter hollow portion 4A in other ranges. Small diameter hollow part 4B formed slightly larger than 1/2
And are provided. Due to this difference in inner diameter, in the present embodiment, assuming that the thickness of the block filter portion corresponding to the small diameter hollow portion 4B is 1, the thickness of the block filter portion corresponding to the large diameter hollow portion 4A is about 0.7. Is set to.

Immediately after the block filter 3 is fired, the surface of the sintered body is often filled with fine pores or the diameter of the pores is too small. A large number of groove-shaped circumferential grooves 5 are provided at predetermined intervals in the axial direction. It has been considered that the large number of circumferential grooves 5 increase the outer surface area of the block filter 3 and that more micropores having a predetermined pore size are exposed on the surface to improve the filtration ability and filtration efficiency of raw water. However, this processing step may be simplified as follows.
That is, fine irregularities are provided on the inner peripheral surface of the mold, the material is put into the mold and fired, and when the block filter 3 as the sintered body is pulled out from the die after firing,
If the outer peripheral surface of the block filter 3 is scraped off in a streak shape due to the unevenness, the processing process is simplified. The unevenness may be provided on the entire inner peripheral surface of the mold,
It may be provided only in an annular shape on the inner peripheral surface.

On the outer peripheral surface of the block filter 3,
A pre-filter 6 made of a non-woven fabric having a coarser mesh than the block filter 3 is wound around two or three rounds and then fixed by heat welding. Since the roll is wound one or more times, the pre-filter 6 and the block filter 2 are in close contact with each other without a gap. A cap 7 for sealing the opening of the small-diameter hollow portion 4B of the inner hollow portion 4 is adhered or welded to the bottom surface of the lower portion of the block filter 3 in a watertight manner. Therefore, in the block filter 3 of the present embodiment, the outer peripheral surface is a filter surface and the bottom surface, that is, the closed end surface is a non-filter surface.

On the other hand, a plurality of (four) adhesive receiving grooves 8 are formed at predetermined intervals on the upper surface of the block filter 3, and the adhesive filled in each adhesive receiving groove 8 is shown in the figure. The support 9 having a sectional shape is watertightly adhered and fixed. The support body 9 is integrally molded in a circular shape in a plane with a synthetic resin material, and a fitting portion 10 that fits on the upper outer peripheral surface of the block filter 3 is formed on the lower side of the outer circumference thereof. A circular contact portion 11 in the shape of a flat circular strip that is capable of contacting the lower surface of the restricting member described later is formed on the upper side portion, and a rubber or silicone seal member is provided between the circular contact portion 11 and the fitting portion 10. A ring-shaped O-ring locking groove 13 for locking the manufactured O-ring 12 against its elastic force is formed, and further, a hollow fiber filter body, which will be described later, housed in the large-diameter hollow portion 4A is fixedly supported at the lower center portion. A filter supporter 14 is formed, and a discharge port 15 for discharging the purified water filtered by the hollow fiber filter toward the discharge pipe described below is formed in the upper center part.
A reverse funnel-shaped funnel-shaped guide portion 16 that smoothly collects the purified water filtered by the hollow fiber filter into the discharge port 15 is formed between the discharge port 15 and the filter body support portion 14. . Circular contact part 1 and discharge port 15 of the support 9
A space 17 which is recessed downward is provided between the space 1 and the space 1.

On the support 9, both ends of a carrying handle 18 formed of a wire rod in a semicircular shape are horizontal below the circular contact portion 11 with the center of the space 17 interposed therebetween. It is rotatably supported about an axis, and as shown in FIGS. 1 and 2, the intermediate arcuate handle can be rotated between a horizontally laid storage position and a vertically standing use position. it can. Therefore, when carrying the cartridge 2 when the cartridge 2 is attached or detached, the carrying handle 18 is erected and the arcuate handle portion is held in the hand.
Can be hung and transported.

The upper end of a cylindrical support, which will be described later, into which the hollow fiber filter 19 is fitted and supported is fixed to the filter support 14 of the support 9. The hollow fiber filter 19 is fixed to the potting material 21 with an infinite number of U-shaped hollow fibers 20 with the upper part of the U-shape facing downward and both ends of the upper end in an open state. As the hollow fiber 20, a hydrophilic porous hollow fiber made of a hydrophilic resin such as a cellulose resin or polyvinyl alcohol, or a hydrophobic resin such as a polyolefin resin, a fluorocarbon resin, a polyester resin, or a polyamide resin is used. Various types of hollow fibers such as the following hydrophobic porous hollow fibers or hollow fibers obtained by hydrophobizing the hydrophobic porous hollow fibers with a surfactant are used. Then, the hollow fiber 20 captures fine solids, bacteria, etc. that could not be captured by the block filter 3 and the pre-filter 6, and at the same time, with the aluminum ions eluted by the ion exchange action of the block filter 3. It also captures aluminum hydroxide by binding with hydroxide ions.

Inside hollow portion 4 of the block filter 3
Between the inner surface of the large-diameter hollow portion 4A and the hollow fiber filter body 19 is extended in parallel with the inner surface of the large-diameter hollow portion 4A with a space between them and before the small-diameter hollow portion 4B, and A tubular support 22 having a cylindrical shape having an opening 22A whose lower end opens toward the small-diameter hollow portion 4B in the lower portion of the large-diameter hollow portion 4A is provided. The tubular support 22 is made of a water-impermeable synthetic resin material or the like. The inner peripheral surface of the upper end of the cylindrical support 22 is watertightly adhered or welded to the outer peripheral surface of the potting material 21, and the upper end of the cylindrical support 22 is supported by the support. It is adhered or welded to the inner peripheral surface of the lower side portion of the filter body support portion 14 of the body 9. Therefore, the tubular support 22 is integrally coupled with the hollow fiber filter 19 and the support 9.

As the tubular support 22 is integrally supported by the support 9 together with the hollow fiber filter 19 as described above, the outer peripheral surface of the tubular support 22 and the block filter 3 are provided. Between the inner surface of the large-diameter hollow portion 4A, the raw water that has passed through the block filter 3 is guided downward along the inner surface of the large-diameter hollow portion 4A, and then the opening 22A of the tubular support 22 is used. A guide water channel 23 to be introduced into the hollow fiber filter body 19 is formed.

The water purifier body 24 is made of a stainless steel plate or the like and is formed into a hollow cylindrical shape so as to enclose the block filter 3, and a watertight fixed connection to the upper end of the cylindrical cover 25. And a cylindrical upper cover 26 that is formed. The cylindrical cover 25
Is coupled and supported in a watertightly closed state to a support base 24A whose lower end is arranged on the floor. And
A water supply port 27, which is connected to a water faucet (not shown) through a pipe, is provided on the lower peripheral surface of the cylindrical cover 25. Inside the water supply port 27, a coil spring 28 is always provided.
A check valve 29 is provided to close the entrance by the elasticity of. The check valve 29 opens when water pressure is applied from the water faucet side to allow the raw water to flow into the water supply space described later, and closes the inlet when the water pressure from the water faucet side disappears. Prevent the raw water inside from flowing back to the tap side.

The upper cover 26 is made of a stainless steel plate or the like and has a ring shape with a thickness larger than that of the cylindrical cover 25, and the support 9 is fitted in the inside thereof so as to be vertically movable. When the support body 9 is fitted inside the upper cover 26, a water supply space 30 is formed between the block filter 3 and the tubular cover 25. In addition, the inner surface of the upper cover 26 has the support 9
The O-ring 12 in cooperation with the O-ring retaining groove 13
Is compressed and pressed in the horizontal direction that intersects the water discharge direction,
Thereby, the space between the water supply space 30 and the outside is reliably closed in a watertight state.

Immediately above the cartridge 2 housed in the cylindrical cover 25, a flat plate disk which cooperates with the upper cover 26 to regulate the displacement of the cartridge 2 in the water discharge direction due to the water pressure during the water purifying action. A regulation member 31 having a shape of a circle is provided. As shown in FIGS. 1, 5, and 6, the regulating member 31 is detachably attached to the inner portion of the upper cover 26, and is supported rotatably in a horizontal plane in the attached state. Has become. Therefore, the regulating member 31
As shown in FIG. 3 and FIG.
Four locking projections 32 are formed at an angle of 0 °, and four recesses 33 are formed between the locking projections 32, and one locking projection 32 is formed. A protrusion-shaped stopper 34 protruding upward is provided on the upper surface of the side portion, and the locking protrusions 32 and 1 are provided with the stopper 34.
A pair of protrusions 36 that lock small holding O-rings (holding members) 35 are provided on the upper surfaces of the central portions of the locking projections 32 separated by 80 °, respectively.
5, a pair of locking projections 3 different from the locking projections 32 provided with
Corresponding to 2, there is provided a pair of hole portions 37 as finger hook portions into which the user's fingers can be inserted and hooked. Each of the protrusions 3
In the vicinity of 6, an arrow 38 indicating the direction of rotation is displayed together with the characters "open" and "close".

On the other hand, on the inner surface of the upper cover 26,
Four locking projections 39 formed in a shape and a size that fit in the four recesses 33 of the regulating member 31 at the same time.
And four recesses 40 formed in a shape and a size that simultaneously fit in the four locking projections 32 of the regulating member 31 between the locking projections 39, respectively. A ring-shaped step portion 41 is formed below the locking projection 39 and each recess 40 to support the lower surface of each locking projection 39 so as to be rotatable in a horizontal plane.

Therefore, the regulating member 31 is attached to the upper cover 2
In order to set the inner surface portion of 6, the fingers are inserted into the pair of hole portions 37 and the regulating member 31 is held, and the four locking protrusions 32 and the four recess portions 33 are respectively formed in the upper cover. Corresponding to the recesses 40 and the locking protrusions 39 of 26,
With the posture maintained, the locking projections 39 are inserted into the inner surface of the upper cover 26 from above and the locking projections 39 are arranged on the stepped portions 41 (the state shown in FIG. 5), and then the fingers are put into the holes 37. If the restricting member 31 is rotated in the direction of “closing” indicated by the arrow 38 with the stopper inserted, and the stopper 34 comes into contact with the end of one locking projection 39 of the upper cover 26, the rotation is blocked. . In this state, the four locking projections 32 can engage with the locking projections 39 of the upper cover 26 in the vertical direction, and the pair of holding O-rings 35 of the upper cover 26 respectively. The restraining member 31 is held in this position by pressing against the inner peripheral surface of the locking projection 39 against its elasticity. In this state, the lower surface of the regulation member 31 regulates the displacement of the cartridge 2 in the water discharge direction due to the water pressure during the water purifying action by contact with the circular contact portion 11 of the support body 9. In this case, the upward force due to the contact is finally received by each locking projection 39 of the upper cover 26.

On the other hand, the regulating member 31 is attached to the upper cover 26.
When removing from the state of being set to, the fingers are inserted into the pair of holes 37 to rotate the regulating member 31 in the “open” direction of the arrow 38, and the stopper 34 of the other one of the upper cover 26. If it abuts on the end of each locking projection 39, its rotation is blocked. In this state, the four locking projections 32 and the four recesses 33 correspond to the recesses 40 and the locking projections 39 of the upper cover 26, respectively (see FIG. 5), and in that posture, The upper cover 26 may be lifted up from the inner surface and escaped. When the water purifying action is not performed, that is, when the water pressure is not acting, the lower surface of the regulating member 31 set on the upper cover 26 and the tubular cover 25 are stored in consideration of an assembly error and the like. It is set so that there is a slight gap between the cartridge 2 and the upper surface of the circular contact portion 11 (FIG. 1).
reference).

A discharge pipe connector 43 is rotatably connected to the regulating member 31 through a connecting hole 42 provided in the center thereof about a vertical axis. The discharge pipe connector 43
Is provided with a lower connection pipe 44 that penetrates the connection hole 42 and is fitted into the discharge port 15 of the support body 9. Further, the water purification guide portion 45 disposed on the upper surface of the regulation member 31 has a lower connection pipe 44. An upper connection pipe 47 that fits the discharge pipe 46 substantially horizontally is provided. A retaining ring 48 is engaged with the lower connecting pipe 44 in contact with the lower surface of the regulating member 31, whereby the discharge pipe connector 43 is integrated with the regulating member 31, and with respect to the regulating member 31. It is immovable in the vertical direction and freely rotatable about the discharge port 15 in the horizontal plane. Therefore, when the regulating member 31 is set on or removed from the upper cover 26 as described above, the regulating member 31 is handled integrally with the discharge pipe connector 43 and the discharge pipe 46. Furthermore, at the upper end of the discharge pipe connector 43,
A support projection 50 is provided that engages with a bowl-shaped cover 49 that covers the upper surface of the regulation member 31 and the like including the discharge pipe connector 43 in a detachable and attachable manner.

An O-ring 51 made of rubber or silicon as an auxiliary seal member is provided between the fitting surfaces of the discharge port 15 and the lower connecting pipe 44 against the elastic force of the discharge port 1.
It is hung on the peripheral groove on the 5th side, whereby compression and pressure contact action based on the deformation of the O-ring 51 in the horizontal direction intersecting with the water discharge direction work, and the inside of the purified water guiding portion 45 and the outside are reliably secured. Watertightly closed. An O-ring 52 that closes in a watertight state is also provided between the fitting surfaces of the discharge pipe 46 and the upper connection pipe 47.

The present embodiment is configured as described above. The water purification action and the like will be described below.

First, the water supply port 27 is connected to the water faucet through a pipe.
By connecting to the tap water, tap water as raw water is supplied to the water purifier 1 from the water supply port 27. The tap water supplied from the water supply port 27 permeates the cartridge 2, that is, the prefilter 6 and the block filter 3 from the water supply space 30 in this order, and the large diameter hollow portion 4A and the small diameter hollow portion of the inner hollow portion 4 are passed. After entering 4B, small-diameter hollow part 4
Tap water in B is directly connected to the opening 22A of the cylindrical support 22.
The tap water introduced from the hollow fiber filter body 19 into the hollow fiber filter body 19 and permeated through the large-diameter hollow portion 4A is once guided downward to the opening 22A of the tubular support 22 by the guiding water passage 23, and then the small-diameter hollow portion 4B. It is introduced into the hollow fiber filter body 19 together with the tap water therein, and the tap water is finally filtered by the hollow fibers 20 to become purified water, which is discharged from the water discharge pipe 46 and used as water.

In this filtration process, tap water is first
Upon passing through the pre-filter 6, a relatively large amount of suspended solids in water is captured. Since the pre-filter 6 is tightly wound around the block filter 3 by winding it for a few turns,
There is no partial leak.

Subsequently, when tap water passes through the block filter 3, fine suspended solids in water are captured. At the same time, due to the action of activated carbon, chlorinated components and organic chlorine compounds such as trihalomethanes are adsorbed and removed. Further, even if the lead component, which is a heavy metal harmful to the raw water, is dissolved, the lead component is also removed by the action of the aluminum oxide contained in the block filter when the raw water permeates the fine pores. be able to.

In the permeation of tap water, the large-diameter hollow portion 4A and the small-diameter hollow portion 4B of the block filter 3 are different in the thickness of the block filter portion depending on their inner diameters. The permeation speed and the amount of permeated water in each part differ, that is, in the part of the small-diameter hollow part 4B, the permeation resistance increases as the thickness increases, the permeation speed decreases, and the permeation flow rate per hour decreases. In the portion of the large-diameter hollow portion 4A, the passage resistance is reduced due to the thinner thickness, the permeation rate is high and the permeation flow rate per hour is large.
In order to introduce and guide the permeated tap water into the relatively narrow guide water passage 23 between the tubular support bodies 22 corresponding to A, the water pressure becomes high in this guide water passage 23. The water resistance increases, and the water pressure and resistance spread to the block filter portion, and as a result, the permeation rate and the permeation rate of tap water in this block filter section are the permeation rate and the permeation rate of the small diameter hollow portion 4B. The gap and length of the guide water channel 23 are set so as to be substantially equal to. Therefore, only the block filter portion corresponding to the large-diameter hollow portion 4A does not cause early clogging.

Next, the opening 22A of the cylindrical support 22.
The tap water merged with is introduced into the hollow fiber filter body 19, fine solids that could not be captured by the block filter 3 and the prefilter 6, bacteria and the like are captured by the hollow fiber 20, and Aluminum hydroxide is also captured by the combination of aluminum ions and hydroxide ions eluted by the ion exchange action of the block filter 3. The tap water purified in this way is the water discharge pipe 4
It is discharged from 6 and used together with water.

At the time of the above-described water purification operation, a considerably large water pressure is generated in the water supply space 30 of the water purifier body 24, and this water pressure lifts the cartridge 2 upward on the water discharge side. However, the regulating member 31 is arranged directly above the circular contact portion 11 of the support 9 on the upper portion of the cartridge 2, and the upper surfaces of the four locking protrusions 32 are respectively locked by the upper cover 26. Since it engages with the lower surface of the protrusion 39, the cartridge 2
Will be prevented from rising further. Also, when the cartridge 2 is lifted upward by water pressure,
A slight relative movement in the vertical direction occurs between the O-ring 12 and the inner surface of the upper cover 26, and between the O-ring 51 and the inner surface of the lower connecting pipe 44 of the discharge pipe connecting tool 43. When the O-ring 12 and the O-ring 51
Since it does not receive a horizontal force that intersects the vertical direction of the relative movement, it is not deformed in the horizontal direction. Therefore, the O-ring 12 and the O-ring 51 have no effect on the water-sealing chain action. There is no effect.

As a result of using the water purifier 1 for a long time in this way, if the filter function of the cartridge 2 is clogged and the purification function deteriorates, it can be easily replaced with a new cartridge 2. That is, when replacing, the cover 49 is removed with the supply of raw water from the water faucet stopped, and as described above, the regulating member 31 is opened by the user's finger from the state shown in FIG. By rotating the discharge pipe connector 43 and the discharge pipe 46 together with the restricting member 31 in the direction shown in FIG. 5, the regulating member 31 can be removed from the upper cover 26.
Then, the carrying handle 18 can be removed by standing it up, holding the arcuate handle part in the hand and pulling it upward from the water purifier body 24. Then, the new cartridge 2 is suspended by the carrying handle 18 and inserted into the water purifier body 24, and the regulation member 31 integrated with the discharge pipe connector 43 and the discharge pipe 46 is shown in FIG. 6 is inserted into the upper cover 26, and the regulating member 31 is rotated from this state in the direction of the arrow 38 to the direction shown in FIG. 6 to complete the setting, and finally the cover 49 is removed. Support projection 5 of discharge pipe connector 43
It suffices to fit and support 0.

In this embodiment described in detail above, the O-rings 12 and 35 are used as the seal member and the auxiliary seal member, but other forms of seal members having the same function may be used. Further, although the finger hook portion provided on the restriction member 31 is formed by the hole portion 37, it may be formed by a depression that allows the belly of the finger to be hooked, or a protrusion that is gripped by the finger.

[0045]

As described in detail above, the first aspect of the present invention
According to the water purifier, in particular, between the outer peripheral surface at one end on the water discharge side of the cartridge and the inner peripheral surface of the water purifier main body, the pressure contact force in the direction intersecting the water discharge direction is applied to the both peripheral surfaces. And a sealing member for watertightly closing the both circumferential surfaces of the cartridge, and a water discharge side end of the cartridge and the water discharge are provided in the water purifier main body at the water discharge side end of the cartridge. Since a regulating member that opposes each other in the direction and regulates the displacement of the cartridge in the water discharge direction due to the water pressure during the water purification action is provided, the seal member and the outer peripheral surface at one end on the water discharge side of the cartridge are With the inner surface of the water purifier body, the original water-tight chain action can be reliably achieved without being strongly compressed unlike the conventional screw tightening method, and its deformation over a long period of time. Prevention The closing action can be maintained, and the displacement of the cartridge in the water discharge direction due to the water pressure during the water purification action is surely regulated by the regulation member, and the cartridge is displaced in the water ejection direction during the regulation. Even if the seal member is displaced, no force acts on the seal member so that the seal member is compressed and deformed in the water-sealing chain direction, that is, in the direction in which the peripheral surfaces face each other.

Further, according to the water purifier of the second aspect, a discharge port projecting in the water discharge direction is provided at one end on the water discharge side of the cartridge, and the purified water is discharged to the outside through the discharge port. A discharge pipe connector for connecting between the discharge pipe for and, and between the fitting surface of the discharge port and the discharge pipe connector,
Since the auxiliary sealing member that closes the space between the mating surfaces in a watertight manner by the pressure contact force in the direction intersecting the water discharge direction is provided, even if the cartridge is displaced in the water discharge direction by the water pressure during the water purification operation, Without being affected by this displacement at all, the water sealing chain action of the seal member and the auxiliary seal member can be surely achieved.

Further, according to the water purifier of the third aspect, since the seal member and the auxiliary seal member are constituted by O-rings, the O-rings which are generally widely used as the respective seal members are applied, so that the water-sealed chain is closed. The function can be surely achieved, the cost of the water purifier can be reduced, and the assembling operation can be facilitated.

Further, according to the water purifier of claim 4, when the regulating member is movably supported in the water purifier body and is arranged at a predetermined first position of the movement, the cartridge is provided. Is regulated to displace the cartridge in the water discharge direction, and when the cartridge is placed at another predetermined second position, the regulation is released to allow the attachment / detachment of the cartridge. If the cartridge is moved and arranged at a predetermined first position, the displacement of the cartridge in the water discharge direction is restricted, and if the cartridge is moved and arranged at the other predetermined second position, the restriction is released. Attachment / detachment of the cartridge can be permitted.

Further, according to the water purifier of the fifth aspect, the regulating member is supported rotatably around the axis line in the water discharge direction with respect to the inside of the water purifier body. Can be arranged at the predetermined first position or the other predetermined second position by a simple operation of simply rotating.

According to the water purifier of claim 6, when the regulating member is arranged at the first position, it is held in the water purifier body by the locking means provided between the regulating member and the water purifier body. Since the water purifier body is configured to be removable from the water purifier body when it is arranged in the second position, if the regulating member is arranged in the first position, it is held by this locking member in this position, It is possible to reliably perform displacement regulation of the cartridge in the water discharge direction without moving to the second position, and if the regulating member is arranged at the second position, the locking means. Since it has nothing to do with this, the regulating member can be easily removed from the water purifier body, and the cartridge can be freely attached and detached.

Further, according to the water purifier of the seventh aspect, since the locking means is constituted by the locking projections which can engage with each other when the regulating member is arranged at the first position. This can be achieved by a simple configuration in which, as the locking means, projecting locking projections that face each other are provided on the regulation member arranged at the first position and the water purifier body.

Further, according to the water purifier of claim 8, the locking means elastically frictionally engages with the locking projection of the water purifier body when the restricting member is moved to the first position. Further, since the holding member for holding the regulating member at the first position is included, if the locking member is arranged at the first position, the locking member itself cannot be moved unintentionally by the holding member. Since the regulation is surely performed, the displacement regulation of the cartridge in the water discharge direction can be performed more reliably.

According to the water purifier of claim 9, when the regulating member moves to the first position, it engages with the locking projection of the water purifier body to stop the movement of the regulating member. Since the stopper is provided to allow the restriction member to move to the second position,
When moving from the position to the first position, even if the stopper is moved randomly, the stopper engages with the locking projection and cannot move any more, so the arrangement of the restriction member can be switched quickly and accurately. it can.

Further, according to the water purifier of the tenth aspect, since the regulating member is provided with the finger-hanging portion on which the user's finger is hung in order to move the regulating member, when the regulating member is moved, the finger-hanging portion is used. It is possible to easily and surely perform a moving operation by placing a finger on the part.

According to the water purifier of the eleventh aspect, the finger hook is constituted by a hole penetrating in the water discharge direction, and is provided between the regulating member and one end of the cartridge on the water discharge side. Since the space portion is provided at least corresponding to the trajectory drawn by the hole portion by the movement of the regulating member,
When the regulation member is moved, it is hung so that fingers are inserted into the hole portion, and when the regulation member is moved, the inside is a space portion corresponding to the trajectory drawn by the hole portion. The tip portions of the fingers are not caught by the cartridge or the like, and the movement of the regulating member can be performed more easily and reliably.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts of a water purifier of an embodiment embodying the present invention.

FIG. 2 is a plan view of a water purifier.

FIG. 3 is a plan view of a regulation member.

4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is an explanatory diagram for setting the regulation member on the water purifier body.

FIG. 6 is an explanatory diagram for setting the regulation member on the water purifier body.

[Explanation of symbols]

1 water purifier, 2 cartridges 3 block filter 9 Support 11 Circular contact part 12 O-ring 15 outlets 19 Hollow fiber filter 24 Water purifier body 26 Top cover 31 Control member 32 Locking protrusion 34 Stopper 35 O-ring for holding 37 holes 39 Locking protrusion 43 Discharge pipe connection tool 46 Discharge pipe

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3J040 AA01 AA13 BA02 HA03                 4D006 GA07 HA03 HA91 HA95 JA70A                       JB11 KA01 KB12 KB14 MA01                       MC11 MC22 MC28 MC33 MC48                       MC54 PA01 PB06 PB24 PB70                       PC52                 4D024 AA02 AB11 AB17 BA02 BA06                       BA13 BB05 BB06 CA04 CA15                       CA16 DB04 DB05                 4D064 AA17 BJ02 BJ04 BJ08 BJ12                       BJ14 EA01

Claims (11)

[Claims] 1. A water purifier comprising a water purifier body, to which a cartridge containing a filter body for purifying water is detachably attached, the outer peripheral surface of one end of the cartridge on the water discharge side and the inner periphery of the water purifier body. A seal member is provided between the surface and a surface to seal the space between the two surfaces by a pressure contact force in a direction intersecting the water discharge direction, and the sealing member is water-tightly closed. In the water purifier body, there is provided a regulating member that opposes one end of the cartridge on the water discharge side in the water discharge direction and that regulates the displacement of the cartridge in the water discharge direction due to the water pressure during the water purifying action. A water purifier characterized by that. 2. A water discharge side end of the cartridge is provided with a discharge port projecting in the water discharge direction, and the discharge port is connected to a discharge pipe for discharging purified water to the outside. Aid for fitting a discharge pipe connector, and a pressure contact force in a direction intersecting the water discharge direction acts between the fitting faces of the discharge port and the discharge pipe connector to close the fitting faces in a watertight manner. The water purifier according to claim 1, further comprising a seal member. 3. The seal member and the auxiliary seal member are O
The water purifier according to claim 2, wherein the water purifier is configured by a ring. 4. The regulating member regulates the displacement of the cartridge in the water discharge direction when the regulating member is movably supported in the water purifier body and is arranged at a predetermined first position of the movement. The purified water according to any one of claims 1 to 3, wherein the regulation is released to allow the cartridge to be attached and detached when the cartridge is placed in another predetermined second position. vessel. 5. The water purifier according to claim 4, wherein the regulating member is supported in the water purifier body so as to be rotatable about an axis of the water discharge direction. 6. The regulating member is held in the water purifier body by a locking means provided between the regulating member and the water purifier body when the regulating member is arranged in the first position, and is arranged in the second position. At this time, the water purifier according to claim 4 or 5, wherein the water purifier is configured to be removable from the water purifier body. 7. The locking means according to claim 6, wherein the locking means is constituted by locking projections that can engage with each other when the restricting member is arranged at the first position. Water purifier. 8. The locking means elastically frictionally engages with the locking projection of the water purifier main body to move the restriction member to the first position when the restriction member is moved to the first position. The water purifier according to claim 6 or 7, further comprising a holding member for holding the water purifier. 9. The regulating member is provided with a stopper that engages with the locking projection of the water purifier body to stop the movement of the regulating member when the regulating member is moved to the first position. The water purifier according to Item 7. 10. The water purifier according to claim 4, wherein the regulating member is provided with a finger-hanging portion on which a user's finger is hung in order to move the regulating member. 11. The finger hooking portion is constituted by a hole penetrating in the water discharge direction, and at least the hole is formed between the restriction member and one end of the cartridge on the water discharge side by the movement of the restriction member. The water purifier according to claim 10, wherein a space portion is provided corresponding to a locus drawn by the portion.