JPH1199385A - Water purifying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily exchange prefilters without hand staining at the time of clogging of the prefilters by providing the inside of a housing vessel with an inside cylinder and outside cylinder and building respectively separately the prefilters and purifying filter media into these cylinders. SOLUTION: The city water enters an inlet water passage 62 formed at a base 6 from a nipple 64 and enters the inside of the inside cylinder 3 from an inlet port 22 formed at the center of the bottom 21 of the outside cylinder 2. The water arriving at the inside of the inside cylinder 3 flows into the prefilter 100 from the outer peripheral surface of the prefilter 100 , by which dust and solid content are removed. Further, the water passes the inside of a cartridge cap 101 and passes a water passage port 1012 arranged in a direction perpendicular thereto, thus arriving at the purifying filter media in the outside cylinder 2. The water passes the inside of the purifying filter media, by which the water is purified. The water passes an outlet port 23 formed at the bottom 21 of the outside cylinder 2 and a water outlet path 63 at the base 6 until the water arrives at a nipple 65 . The water is eventually fed from a discharge pipe in the final.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifier for tap water.

[0002]

2. Description of the Related Art In recent years, there has been an increasing demand for safety for drinking water, and water purifiers for purifying tap water have been used. In such a water purifier, a pre-filter
Water purifiers that use both water and filter media are particularly effective, and are widely used in areas and seasons with relatively poor water quality. In such a water purifier, a pre-filter is provided in front of a water purification filter medium, a solid component in tap water is filtered off by the pre-filter, and then a purification method is performed by a water purification filter medium.
When the eyes of the pre-filter become clogged, the pre-filter is replaced with a new one. However, there has recently been a case in which protozoa such as Cryptosporidium and Giardia were mixed in tap water.In addition to having a function to capture them, they also had a function to easily replace the captured prefilter without soiling the hands. Development of a water purifier is desired.

On the other hand, in a water purifier using a pre-filter and a water-purifying filter medium, these are either separated and juxtaposed (side-by-side) in the water purifier, or an independent pre-filter is attached to the water purifier main body. Therefore, the size of the whole water purifier becomes large, and the piping between the pre-filter and the water purification filter material is also required, so that there is a disadvantage that the whole structure becomes complicated. As another water purifier, a pre-filter is attached to the raw water introduction hose separately from the water purifying filter material in the cylindrical casing, but this is considered in consideration of the place where a water purifier such as a kitchen is installed. It becomes a very disturbing structure.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described drawbacks of the conventional water purifier, and has been made in consideration of the above-described drawbacks. The present invention provides a compact water purifier employing a water purifying filter material for the purpose of the present invention, and in particular, has a structure in which the hand can be easily replaced without touching the raw water when replacing the pre-filter.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its gist is to provide an outer can of a housing, a water inlet and a water outlet which are housed in the outer can of the housing and are provided at the bottom. An outer cylinder having a lower end fitted into the water inlet, an inner cylinder standing upright in the outer cylinder, a purification filter material filled in the outer cylinder, and an outer cylinder cap closing an upper edge of the outer cylinder. And a cylindrical pre-filter cartridge (hereinafter simply referred to as a cartridge) inserted into the inner cylinder from above, preferably having a check valve at the bottom, and inserted into the cartridge. A pre-filter, a cartridge cap having a knob formed on an upper portion, and a water inlet formed in a portion located below the outer cylinder cap when the cartridge cap is mounted on the outer cylinder cap. And then fit over the top of the housing outer can A housing cap, a base fitted to the lower portion of the housing outer can to support the outer cylinder, and an inlet and an outlet for the water inlet and outlet of the outer cylinder. It is related to the characteristic water purifier,
The water inlet and the water outlet are provided side by side, and it is preferable that a water supply nipple is attached to each of the water inlet and the water outlet, and it is particularly preferable that the opening diameter of the prefilter is 1 micron or less.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the flow of water in a water purifier of the present invention will be described. The water enters a base water inlet through a water tap and the like, and enters the inner cylinder through the water inlet of the outer cylinder. Then, it passes through the check valve and enters the cartridge, where the pre-filter
, Etc., and then flows into the upper end of the outer cylinder from the water inlet of the cartridge cap, passes through the filter media from top to bottom, purifies water, and is formed at the bottom of the outer cylinder. The water then flows out to the flood channel and is taken out and provided for beverages and the like.

As described above, in the water purifier of the present invention, raw water from tap water enters the water purifier by a switching cock or the like, and is first filtered by a pre-filter. The opening diameter of the pre-filter is 1 micron. If it is below, even if protozoa such as cryptosporidium of 4 to 5 microns are mixed in tap water, they will be captured inside the pre-filter. Thereafter, the water is purified by an activated carbon layer or the like in the outer cylinder, and harmful substances such as chlorine, trihalomethane, and 2MIB are removed, and supplied as drinking water.

In the water purifier of the present invention, as described above, the water purifier is downsized by efficiently placing the pre-filter and the purification filter material in one housing. Then, when the pre-filter becomes clogged and the flow rate of the purified water decreases, the knob provided on the upper portion of the cartridge cap is rotated, and the car is pulled out.
The cartridge can be taken out together with the pre-filter. At this time, it is preferable to provide a check valve at the bottom of the cartridge, and the check valve works so that water inside the cartridge does not leak. In addition, it is preferable that a peripheral groove is formed around the cartridge cap on the outer cylinder cap that supports the cartridge cap, so that when the cartridge is taken out or a new pre-filter is mounted. The generated overflow is received by the circumferential groove, and the overflow can be prevented from flowing into, for example, between the outer can and the outer cylinder.

In the base supporting the lower end of the outer cylinder, the water inlet and the water outlet are formed corresponding to the water inlet and the water outlet provided at the bottom of the outer cylinder. It is preferable that the inlet channel and the outlet channel are juxtaposed for the same method. This is advantageous in terms of piping and maintenance.

[0010] The purifying filter medium is filled with activated carbon, barley stone and the like in order to filter impurities and harmful ions, chlorine odor, trihalomethane, moldy odor, various germs and the like in the water.
On the other hand, as an example of the prefilter, a nonwoven fabric, a hollow fiber membrane or the like is mainly used.

According to the present invention, the size of the whole water purifier is reduced. Conversely, however, it is possible to increase the amount of purification filter material such as activated carbon by that much, and it is hygienic and compact. It is now possible to construct a water purifier that performs the functions described above.

[0012]

1 is a longitudinal sectional view showing a preferred example of the water purifier of the present invention. In the figure, reference numeral 1 denotes a cylindrical housing can body, the upper end has a slightly constricted 1 ₁ inside, the male screw 1 ₂ are engraved on the outer peripheral side. And in which the outer tube 2 to clean the filter medium is housed in the neck portion 1 ₁ is fitted. This is the bottom 2 ₁ of the outer cylinder 2 and the water outlet 2 ₃ is formed on its outer peripheral water inlet 2 ₂ in the center, a circumferential flange 2 ₄ surrounds the water inlet 2 ₂ and rose up. The force - in which the inner tube 3 to pay cartridge 10 is the lower end 3 ₁ is fitted into and erected on the circumferential flange 2 ₄ surrounding the entering-water outlet 2 _2. The purification filter medium for example fibrous activated carbon ₇₁ between the inner tube 3 and outer tube 2, granular activated carbon 7 _2, sintered filters -7 ₃ or the like is to be incorporated nails in layers.

[0013] Figure 2 is Ca - cartridge 10 and prefilter -10 ₀ incorporated thereto, more force - cartridge is a sectional view obtained by extracting only the cap 10 _1, cylindrical prefilter -10 ₀ Painter - It is inserted into cartridge 10, the prefilter blind plug ₁₀₃ which is engaged by pawl 10 ₂ -
10 the lowest end 10 _{01 0} is fitted is in fixed. The force - cartridge 10 its lowermost end 10 ₄ water inlet 2 ₂
It is fitted vertically and installed vertically. In the figure, ₁₀₅ is a check valve, force - in which water cartridge 10 is prevented from flowing back.

[0014] On the other hand, mosquitoes - cartridge cap 10 ₁ month -
Together are fitted to the upper end of the cartridge 10, the tip 10 ₁₁ is attached is fitted to the inner surface of the prefilter -10 _0, obtained by forming a passage Mizuguchi 10 ₁₂ laterally intermediate portion, the passage Minakuchi 10 ₁₂ months - cartridge cap 10 ₁ is positioned on the lower side of the outer cylinder cap 4 in a state of being incorporated completely fitted into the outer cylinder cap 4. Thus, through the prefilter -10 ₀ Water Ca - cartridge cap 1
0 ₁ , and further through the water inlet 10 ₁₂ to reach the purification filter in the outer cylinder 2. Note that the cartridge 10
And Ca - between the cartridge cap 10 ₁ O- ring ₈₁ the inner cylinder 3 and the outer cylinder cap 4 fitted sheet - le is completed.

[0015] The upper edge of the outer cylinder 1 is fixed by recess 4 ₂ of the outer peripheral edge 4 ₁ of the outer cylinder cap 4 is fitted to weld this site, the outer cylinder cap 4遊口in central 4 ₃ and a female screw 4 surrounding the play hole 4 _3.
4 be one flange 4 ₅ which has been engraved is formed, the outer peripheral edge 4 ₁ of the flange 4 ₅ and the outer cylinder cap 4
It is obtained by forming a circumferential groove 4 ₆ between. The flange 4 ₅ female thread 4 ₄ was engraved on the Ca - cartridge cap 10
It is intended to be subjected to screwing between _1, whereas the flanges 4 ₅ circumferential grooves 4 ₆ surrounding the mosquitoes - is a cartridge cap 10 _first withdrawal and overflow during mounting intended to collect here.

[0016] Ca - on the outer periphery of the cartridge cap 10 ₁ has a male thread 10 ₁₃ to be screwed with the female thread 4 ₄ of the outer cylinder cap 4 is engraved, both are detachable. And this force - cartridge cap 10 ₁ prefilter -10 ₀
Becomes regularly removed it in order to exchange, this has knob 10 ₁₄ attached to the upper for occupying become feces removal, off the outer cylinder cap 4 by rotating picking it, or outer It will be screwed to the cylinder cap 4. Then, the user grips the knob 10 _{14 with} his / her finger and lifts the cartridge 10 to move the cartridge 10 into the inner cylinder 3.
This makes it easier to pull out.

[0017] Incidentally, the inner cylinder 3 and the force - cartridge 10 and the outer cylinder cap 4 and Ca - contact surface with the cartridge cap 10 ₁ is watertight - must be Le, usually with O- rings 8 ₁ Is sealed. The O- to a predetermined surface of the inner cylinder cap 5 for the ring ₈₁ of the housing O- ring groove ₈₂ is formed. And these mosquitoes - cartridge cap 10 ₁ and the housing cap 1 ₀ over the outer cylinder cap 3 is protecting the top screwed on the male screw 1 _second housing can 1.

On the other hand, a base 6 is provided at the lower end of the housing can 1.
Have been fitted, the base - annular cushion rubber ₆₁ on the back side of the scan 6 is adhered. And this base 6
In is water channel 6 ₃ incoming and outgoing water path 6 ₂ is matched to the outer cylinder 2 of the bottom surface 2 ₁ a provided water inlet 2 ₂ and the water outlet 2 ₃ is formed, in which fitting them watertight. The watertight sheet - the water inlet 2 ₁ and the outer periphery side of the water outlet 2 ₂ O- ring groove ₈₂ is formed for Le, here O- ring ₈₁ is fitted in - will be Le . And waterways incoming and outgoing waterway 6 ₂ 6
₃ may have being arranged in the same direction, the nipple 6 ₄ for the tip to the pipe, 6 ₅ is screwed, and further coupled discharge pipe 6 ₆ the nipple 6 ₅ Izumi side water purification The vessel is completed. The discharge pipe 6 ₆ intended to be supported by the housing can 1, 6 ₇ band 6 ₈ surrounding the housing can 1 is arms. In FIG. 1, base - input of the scan 6 waterways 6 ₂
The waterway 6 ₃ out with was abbreviated to be easy to understand.

[0019] To describe here the flow of water specifically, tap water nipple 6 ₄ Karabe - Input formed scan 6 waterway 6
Enters _2, the outer cylinder 2 of the bottom portion 2 ₁ of the center forming the water inlet 2
It enters the inner cylinder 3 from ₂ . Then, the water that has reached the inner cylinder 3 prefilter -10 from the outer peripheral surface of the prefilter -10 ₀
Dust and solids are removed by flowing through the interior of _0, further force - through the cartridge cap 10 _1, on clean filter media in the outer tube 2 through the through Mizuguchi 10 ₁₂ arranged thereto and perpendicular Reach. And this was passed through a purification filter medium water is purified, the outer cylinder 2 of the bottom portion 2 ₁ to form the water outlet 2 ₃
And base - through the water discharge passage 6 ₃ in scan 6, nipple 6 ₅
Reached, so that the at the end the water supply from the discharge pipe 6 _6.

[0020] As for the withdrawal of the prefilter -10 _0, mosquitoes with detached housing cap 1 ₀ -
Releasing the screwing of the screw ₄ 4, 5 ₃ rotates with a knob 10 ₁₄ of cartridge cap 10 _1, then the knob 10 ₁₄
Ca Put your finger - cartridge cap 10 ₁ month - cartridge 10 together pulling force - in which became to be able to replace the pre-filter -10 ₀ cartridge 10. At this time, force - the check valve ₁₀₅ so that no water cartridge 10 from flowing back into the inner cylinder 3 are those provided.

[0021] In this way, the clogging of the pre-filter -10 ₀ it is necessary to replace it with a new one and progresses,
The water inside the water purifier often overflows every time the water is replaced, and the overflowed water may flow into, for example, a place where the hand between the housing can 1 and the outer cylinder 2 of the water purifier is hard to reach, This was the cause of mold and dirt. That is, when pulling out the cartridge 10 for replacement,
Or overflowing water from the interior of the cartridge 10, mosquitoes and replace the prefilter -10 ₀ - when remounting the cartridge 10 by the water inside is pushed out by the blind plug 10 ₃ of the tip of the prefilter -10 ₀ While such a drawback of the put away, this example because the formation of the circumferential groove 4 ₆ to the outer cylinder cap 4 as mosquitoes - cartridge 10 with the water overflowing together accumulated in circumferential grooves 4 ₆ of the outer cylinder 4 It does not seep into the surroundings or flow out.

Next, each member constituting the water purifier of the present invention will be described. FIG. 3 is a plan view of the outer cylinder 2.
The bottom 2 _first center water inlet 2 ₂ and water outlet on its outer periphery 2
₃ is formed, a number of projections from the bottom 2 ₁ inside 2
₅ is erected to support the filter media. 2 ₄ is a circumferential flange, so that the inner cylinder 3 is intertwined with upright fitted thereto.

[0023] Figure 4 is a plan view of the outer cylinder cap 4, mosquitoes in the center -遊口4 ₃ cartridge cap 10 ₁ is fitted is formed, is formed a flange 4 ₅ further surrounds it. And, this is between the flange 4 ₅ and the outer peripheral edge 4 ₁ circumferential groove 4 ₆ are formed, are supposed to collect overflowing water here.

[0024] Figure 5 is Ca - cartridge is a plan view of the cap 10 _1, FIG. 6 is a horizontal sectional view of passing Mizuguchi 10 _12. As knob 10 ₁₄ seen also in FIG. 2 and FIG. 5 is formed in a bridge shape having a constant width, out to put their fingers inside the bridge-shaped, mosquitoes with this - cartridge 10 easily pulled out that Can be done. Incidentally, Ca - cartridge cap 10 ₁ outer cylinder cap 4 the outer tube 2 by pulling over the fingers remain knob 10 ₁₄ was screwed to the base - that can be extracted from the scan 6 easily as a matter of course. In addition, the water inlet 10 _{12 with} four pieces 10 ₁₅
Are formed over a substrate, simply be those opened laterally holes as passage Mizuguchi 10 _12. Mosquito The presence of this passage Mizuguchi 10 ₁₂ - water through the cartridge cap 10 within ₁ reoriented by the passing Mizuguchi 10 _12, so that flow over the clean filter media filled in the outer tube 2 (arrow) .

FIG. 7 is a plan view of the housing cap 1 _0, 1 ₀₁ is a handle with a central, is subjected to removal.

FIG. 8 is a plan view of the base, FIG. 9 is a side view thereof, FIG. 10 is a rear view, FIG. 11 is a sectional view taken along line AA of FIG. 8, and FIG. It is sectional drawing in the -B line. Now, base - scan 6 and water outlet passage 6 ₃ formed in the bottom 2 ₁ of the outer tube 2 a water inlet 2 ₂ inlet waterways 6 ₂ and the water outlet 2 ₃ is fitted to the fitting is formed in the center , Which are arranged side by side at right angles while changing the direction and are used for inserting the nipple. That is, incoming water channel 6 ₂ and the water outlet passage 6 ₃ intact base - will be redirected in a perpendicular direction on scan 6, reaches the nipple 6 ₄ and 6 ₅ and. In this case the water outlet 6 ₃ arranged so that the central axis directly intersecting that although the water inlet 2 ₂ water channel 6 ₃ out its central axis is input waterway 6 ₂ and the central axes produces a slight spacing without intersecting directly Have been. This allows nipples 6 ₄ and 6
₅ is symmetrically arranged with respect to the center of the base, and a connection hose formed of, for example, a twin hose can be connected to the water purifier in a well-balanced manner.

[0027]

According to the water purifier of the present invention, an inner tube and an outer tube are provided in a housing can in order to solve the problem that the whole structure of the water purifier is large and complicated, and the pre-filter and the purifier are respectively provided. It has a built-in filter medium separately and has a structure in which the filter can be easily replaced when the pre-filter is clogged without soiling the hands, and its use value is high.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a preferred example of a water purifier of the present invention.

FIG. 2 is a sectional view of a pre-filter cartridge of the present invention.

FIG. 3 is a plan view of an outer cylinder.

FIG. 4 is a plan view of the outer cylinder cap.

FIG. 5 is a plan view of the inner cylinder cap.

FIG. 6 is a horizontal sectional view of a water inlet.

FIG. 7 is a plan view of a housing cap.

FIG. 8 is a plan view of a base.

FIG. 9 is a side view of FIG. 8;

FIG. 10 is a rear view of FIG. 8;

FIG. 11 is a sectional view taken along line AA of FIG. 8;

FIG. 12 is a sectional view taken along line BB of FIG. 9;

[Explanation of symbols]

1 ‥‥ housing case body, 1 ₀ ‥‥ housing cap 1 ₀₁ ‥‥ housing cap of the handle, the constricted portion of the upper end of the 1 ₁ ‥‥ housing can body, 1 ₂ ‥‥ male thread, 2 ‥‥ outer cylinder 2 ₁底 Bottom of outer cylinder, 2 ₂入 Inlet formed in the center of bottom of outer cylinder, 2 ₃出 Outlet formed in bottom of outer cylinder, 2 ₄周 Flange surrounding inlet, 2 ₅ ‥‥ outer cylinder bottom forming the projections, 3 ‥‥ inner cylinder, 3 the lower end of the ₁ ‥‥ inner cylinder, 4 ‥‥ outer cylinder cap, 4 ₁ outer periphery of ‥‥ outer cylinder cap, 4 ₂ ‥‥ outer cylinder recesses formed in the outer peripheral edge of the cap, 4 ₃遊口formed in a central portion of ‥‥ outer cylinder cap, 4 ₄ ‥‥ internal thread, flange surrounding 4 ₅ ‥‥遊口, 4 ₆ ‥‥ flange and the outer circumferential grooves between the outer periphery of the cylindrical cap, 6 ‥‥ base - scan, 6 ₁ ‥‥ cushion rubber, 6 ₂ ‥‥ inlet water channel, 6 ₃ ‥‥ Izumi , 6 _4, 6 ₅ ‥‥ nipple, 6 ₆ ‥‥ discharge pipe, 6 ₆₁ ‥‥ discharge pipe lower end of the flange, 6 ₆₂ ‥‥ female screw member, 6 ₆₃ ‥‥ packing of 6 ₆₄ ‥‥ discharge pipe upper intake mouth, 6 ₇ ‥‥ band, 6 ₈ ‥‥ arms, 7 ₁ ‥‥ fibrous activated carbon, 7 ₂ ‥‥ granular activated carbon, 7 ₃ ‥‥ sintered filter -, 8 ₁ ‥‥ O- ring, 8 ₂ ‥‥ O- ring groove, 10 ‥‥ mosquito - cartridge, 10 ₀ ‥‥ prefilter -, 10 ₁ ‥‥ month - cartridge cap, 10 ₂ ‥‥ pawl, 10 ₃ ‥‥ blind plug, 10 ₀₁ ‥‥ prefilter - of Lower end, 10 ₄最 Lowermost end of cartridge, 10 ₅ ‥‥ Check valve, 10 ₁₁先端 Tip of cartridge cap, 10 ₁₂ ‥‥ Water inlet, 10 ₁₃雄 Male screw of cartridge cap , 10 ₁₄み Pick a cartridge cap, 10 ₁₅片 Water inlet piece.

Claims (4)

[Claims] 1. An outer can having a housing outer can, an outer cylinder housed in the outer housing can and having a water inlet and a water outlet at a bottom portion, and a lower end fitted into the water inlet and standing inside the outer cylinder. A cylinder, a purification filter material filled in the outer cylinder, an outer cylinder cap for closing an upper edge of the outer cylinder, a cylindrical pre-filter cartridge inserted from above into the inner cylinder, and the pre-filter. Car
A pre-filter inserted into the cartridge, a pre-filter-cartridge cap formed with a knob on the top,
When the pre-filter cartridge cap is attached to the outer cylinder cap, a water inlet is formed in a portion located below the outer cylinder cap, and a housing cap fitted into an upper portion of the housing outer can. A base fitted into the lower portion of the housing outer can to support the outer cylinder;
A water purifier characterized in that the water purifier is provided with a water inlet and a water outlet which communicate with the water inlet and the water outlet of the outer cylinder. 2. The water purifier according to claim 1, wherein the water inlet and the water outlet are provided side by side, and a water supply nipple is mounted on each of the water inlet and the water outlet. 3. The water purifier according to claim 1, wherein the opening diameter of the pre-filter is 1 micron or less. 4. The water purifier according to claim 1, wherein a check valve is provided at a bottom of the pre-filter cartridge.