JP2675284B2 - Water purification cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification cartridge for purifying drinking water such as tap water at home.

[0002]

2. Description of the Related Art As a water purifying cartridge of this type, as shown in JP-A-60-179187, a water purifying cartridge is detachably attached to a body, and a water inlet and a water inlet are provided below the water purifying cartridge. A water outlet is provided, an inlet passage and an outlet passage communicating with the water inlet and the water outlet are provided in the body, activated carbon is stored in the water purification cartridge, and a filter is placed on the water outlet side of the activated carbon.
It is known that the entire cartridge is transparent so that the dirt condition of the filter can be observed from the outside.

[0003]

Such a water purification cartridge is expensive because the entire water purification cartridge is transparent, and the treatment of water by activated carbon and a filter is used for treating the hollow fiber membrane. No consideration was given to what is used as.

SUMMARY OF THE INVENTION It is an object of the present invention to have a structurally compact,
Another object of the present invention is to provide a water purification cartridge that can effectively observe the degree of contamination of the hollow fiber membrane from the outside even when the hollow fiber membrane is used as a treatment material.

[0005]

A first feature of the present invention is as follows.
In a water purification cartridge having a water inlet and a water outlet, and a water purification treatment material disposed inside a sealed cylindrical case, the water purification treatment material is a hollow fiber membrane and a periphery of the hollow fiber membrane. Water flowing from the water inlet to the hollow fiber membrane and then flowing out from the water outlet, and a water passage from the activated carbon to the hollow fiber membrane. In the water purification cartridge, the case is provided with a transparent portion through which the hollow fiber membrane can be directly viewed from the outside.

A second feature of the present invention is a water purification cartridge having a water inlet and a water outlet, in which a water purification treatment material is disposed, wherein the water purification cartridge has one tubular shape opened. An outer case, a tubular inner case arranged inside the outer case and having both ends open, an activated carbon portion filled with activated carbon between the outer case and the inner case, and a hollow fiber in the inner case A hollow fiber membrane portion in which a membrane is arranged, the water inlet provided on the other side of the outer case and connected to the activated carbon portion, the water outlet connected to the hollow fiber membrane portion, and the outer case A water purification cartridge characterized by comprising a transparent cap portion that seals one open side and forms a water passage from the activated carbon portion to the hollow fiber membrane portion.

A third feature of the present invention is a water purification cartridge having a water inlet and a water outlet, and a water purification treatment material disposed inside a sealed case, wherein the case is opaque and one of the cases is opaque. The water purification treatment material is formed in a tubular shape having an opened open portion, and the water purification treatment material is composed of a hollow fiber membrane arranged in the case and activated carbon arranged around the hollow fiber membrane, and the water inlet and The water outlet is provided in the vicinity of the side opposite to the open portion of the case, and water flowing from the water inlet is flowed to the activated carbon and then to the hollow fiber membrane to flow out from the water outlet, A water passage extending from the activated carbon to the hollow fiber membrane is formed near the open portion by closing the open portion with a transparent cap so that the water inflow portion of the hollow fiber membrane can be directly viewed through the transparent cap. Water characterized by It is in Cartridge.

[0008]

According to such a water purification cartridge, the hollow fiber membrane is arranged inside the outer case that constitutes the water purification cartridge, and activated carbon is further arranged around the outer case. Since it is on the inlet side of the membrane and is transparently formed, the water purification cartridge can be downsized, and the most contaminated portion of the hollow fiber membrane can be visually observed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

The body 1 of the water purifier is detachably attached to the faucet 3 via the connecting portion 2.

The body 1 also has a central passage 1a in which a switching valve 4 is housed, and the switching valve 4 connects the faucet communication passage 1b to the source water discharge passage 1c and the inlet passage 1d. .

The water purification cartridge 5 is detachably attached to the body 1. The water purification cartridge 5 has a water inlet 5a and a water outlet 5b on its lower surface.

The water inlet 5a is connected to the inlet passage 1d of the body 1, and the water outlet 5b is connected to the purified water outlet passage 1e of the body 1.

The outer case 5e constituting the water purification cartridge 5 is formed in a cylindrical shape with one end closed and the other end open, and a hollow fiber membrane portion for housing the hollow fiber membrane 6 is formed in the outer case 5e. The inner case, here the hollow fiber membrane case 9, is housed, and in the space between the outer case 5e and the hollow fiber membrane case 9 around the inner case, an activated carbon portion in which the granular palm shell activated carbon 7 is housed is formed. There is.

The perforated plates 10 and 11 are arranged so as to form the upper and lower end surfaces of the activated carbon 7, which functions to prevent the activated carbon 7 from moving.

The perforated plate 11 is arranged in the outer case 5e and is provided on the outer periphery of one end of the hollow fiber membrane case 9. Further, the outer periphery of the other end of the hollow fiber membrane case 9 is
e supported by a hollow fiber membrane case supporting portion 5f formed inside. The hollow fiber membrane case supporting portion 5f is fixed to the outer case 5e in a water-tight manner, and isolates the water outlet 5b from the activated carbon portion.

A check valve 8 is arranged between the activated carbon 7 and the water inlet 5a. The check valve 8 blocks the water inlet 5a by its own weight and floats upward when water pressure is applied to the surrounding area. Water reaches the activated carbon 7 through the gap.

The upper ends of the hollow fiber membrane 6 and the activated carbon 7 are substantially coincident with each other, and they are communicated with each other via a water passage which is an upper space 5c thereof. Therefore, the upper end of the hollow fiber membrane 6 is on the water inlet side.

A transparent cap 5d is attached to the upper wall of the water purification cartridge 5. That is, the outer case 5
A transparent cap 5d is fixed to the open portion of e, and the cap 5d has a concave shape.
From the above, the outer case 5e is naturally opaque.

The hollow fiber membrane 6 is formed by bending at the upper end.

A cover 12 is removably attached to the body 1 so that the water purification cartridge 5 is pressed against the body 1.

In such a water purifier, when the switching valve 4 is set on the source water side, the source water can be taken out directly from the faucet 3 through the raw water discharge passage 1c.

When the switching valve 4 is set to the purified water side, the raw water flows from the faucet 3 through the inlet passage 1d to the water inlet 5a of the water purification cartridge 5, and the check valve 8 receives water pressure to change the raw water. After being floated and chlorine odor and dirt are adsorbed by the activated carbon 7 through the activated carbon 7, the hollow fiber membrane 6 is passed through the water passage 5c.
The germs are removed by flowing from the upper end side, and then can be taken out as purified water to the outside through the water passage outlet 5b and the purified water outlet passage 1e.

According to such a water purification cartridge, the hollow fiber membrane case 9 is arranged in the outer case 5e, and the activated carbon 7 can be miniaturized by disposing the activated carbon 7 between the outer case 5e and the hollow fiber membrane case 9. Since the upper end of the hollow fiber membrane 6 is the inlet side and that portion is formed by the transparent cap 5d, the portion of the hollow fiber membrane 6 where the degree of contamination is most noticeable can be visually observed from the outside.

[0025]

According to the water purifier of the present invention, the size can be reduced, and the most contaminated part of the hollow fiber membrane can be observed from the outside, so that the cartridge can be reliably replaced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a water purifier equipped with a water purification cartridge of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a longitudinal sectional view of a single water purification cartridge of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Body, 2 ... Connection part, 3 ... Water faucet, 4 ... Switching valve, 5 ...
Water purification cartridge, 5e outer case, 6 hollow fiber membrane, 7 activated carbon, 8 check valve, 9 hollow fiber membrane case, 1
0, 11: perforated plate, 12: cover.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenzo Sangada 1-1-1, Higashitaga-cho, Hitachi-shi, Ibaraki Hitachi Co., Ltd. Taga factory (72) Inventor Yutaka Tsukamoto 1-1-chome, Higashitaga-cho, Hitachi-shi, Ibaraki No. 1 Hitachi Ltd. Taga Factory (72) Inventor Kenji Saruta 1-1-1, Higashitaga-cho, Hitachi-shi, Ibaraki Taga Sangyo Co., Ltd. (56) Reference JP-A-60-179187 (JP, A) JP 62-247886 (JP, A) JP 61-4588 (JP, A) Actual opening 61-132095 (JP, U) Actual opening 62-62888 (JP, U) Actual opening 62-130789 (JP, U) Actually opened 61-175297 (JP, U)

Claims (4)

(57) [Claims] 1. A water purification cartridge in which a water purification treatment material is disposed inside a sealed cylindrical case having a water passage inlet and a water passage outlet, wherein the water purification treatment material is a hollow fiber membrane and the The activated carbon is disposed around the hollow fiber membrane, and the water flowing from the water inlet is passed through the activated carbon and then flown to the hollow fiber membrane to flow out from the water outlet. A water purification cartridge, characterized in that a transparent portion is provided in the case so that the hollow fiber membrane can be directly viewed from the outside in the middle of a water passage leading to the membrane. 2. A water purification cartridge having a water inlet and a water outlet in which a water purification treatment material is disposed, wherein the water purification cartridge has an outer case in which one cylindrical shape is opened, and the outer case. A cylindrical inner case, which is arranged inside and whose both ends are open, an activated carbon portion in which activated carbon is filled between the outer case and the inner case, and a hollow fiber in which a hollow fiber membrane is arranged in the inner case The membrane portion, the water passage inlet provided on the other side of the outer case and connected to the activated carbon portion, the water passage outlet connected to the hollow fiber membrane portion, and the opened one side of the outer case are closed. A water purification cartridge comprising a transparent cap portion forming a water passage extending from the activated carbon portion to the hollow fiber membrane portion. 3. A water purification cartridge having a water inlet and a water outlet, wherein a water purification treatment material is disposed inside a sealed case, wherein the case has an open portion that is opaque and one of which is open. The water purification treatment material is formed in a tubular shape, and is composed of a hollow fiber membrane arranged in the case and activated carbon arranged around the hollow fiber membrane, and the water inlet and the water outlet are the case. Is provided in the vicinity of the side opposite to the open portion, and the water flowing from the water inlet is flowed to the activated carbon and then to the hollow fiber membrane to flow out from the water outlet, and the open portion is covered with a transparent cap. Water that is closed to form a water passage from the activated carbon to the hollow fiber membrane in the vicinity of the open portion so that the water inflow portion of the hollow fiber membrane can be directly viewed through the transparent cap. Purification cartridge. 4. The water purification system according to any one of claims 1 to 3, wherein the hollow fiber membrane is bent near the transparent cap portion, and both ends thereof are connected to a water outlet. cartridge.