JPH06210281A - Water purifier - Google Patents

Abstract

PURPOSE:To provide a water purifier of inexpensive structure for making the life of a cartridge longer by cleaning the cartridge and showing the display at the time of backflow cleaning. CONSTITUTION:As a cartridge is removed from a body and the cartridge is rotated and a pure water outlet of the cartridge is formed in compliance with a raw water passage 1d of the body and a projection 20 is formed on a raw water inlet of the cartridge formed in compliance with a backflow cleaning water passage 1f, a check valve installed on the upper section of raw water inlet of the cartridge is pushed up by the projection 20 when the cartridge is loaded on the body to form a passage for backflow cleaning. The shape of the cartridge is formed so as to be easily treated by this arrangement and its size can be miniaturized, and a lot of filter mediums can be stored. Also, caution can be solicited at the time of backflow cleaning.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifier, which is suitable for improving the water purifying ability and is capable of backwashing a cartridge.

[0002]

2. Description of the Related Art A conventional water purifier is disclosed in Japanese Patent Laid-Open No. 60-9937.
As a method of backwashing the cartridge as shown in No. 9, a backwash water outlet is provided on the cartridge in addition to the raw water inlet and the clean water outlet, and the cartridge is fitted to the clean water outlet of the cartridge in the raw water supply passage of the body. There is a method in which raw water is backwashed to feed backwater, and the purified water outlet of the body is covered with a finger or the like, and clogging solids between particles of a treated material such as activated carbon are discharged from the backwash water outlet of the body.

[0003]

However, such a conventional water purifier as a method for backwashing a cartridge is disclosed in JP-A-60-99379, in which a raw water inlet, a purified water outlet and a backwashing water outlet are attached to the cartridge. Since the three ports are provided, the structure of the cartridge becomes complicated. In addition, during backwashing, it is necessary to close the purified water outlet with a finger or the like, which is inconvenient and unsanitary.

[0004]

In order to achieve the above object, the present invention has a raw water inlet and a purified water outlet formed in a cartridge, and the respective passage openings are formed on the same circumference with the center of the cartridge as an axial center. And formed in an asymmetric position. Further, the backwash water passage of the body is provided with a projection so that when the cartridge is mounted at the backwash position, the check valve inside the cartridge is pushed up to form a passage for backwash.

Furthermore, when the cartridge is mounted at the backwashing position, "backwashing" is performed at the front surface of the cartridge, that is, at a position where the user can see the cartridge.
Was added.

[0006]

According to the present invention, the raw water inlet and the purified water outlet are formed in the cartridge on the same circumference with the center of the cartridge as an axis and in asymmetrical positions, and the backwash water passage formed in the body is provided with protrusions. Provided. For example, when backwashing a cartridge, remove the cartridge from the body once, rotate the cartridge, align the clean water outlet of the cartridge with the raw water feed passage of the body, and set the raw water inlet of the cartridge to the backwash water passage of the body. To match. At this time, since the backwash water passage of the body is provided with a projection, when fitted with the raw water inlet of the cartridge, the projection pushes up the check valve provided above the raw water inlet of the cartridge to provide a passage for backwashing. Is formed. When the faucet is twisted in this state, the raw water from the tap water flows in from the clean water outlet of the cartridge, which pushes away the impurities clogged in the hollow fiber membrane and activated carbon, and goes through the raw water inlet of the cartridge, contrary to the flow at the time of water purification. , Is discharged through the backwash water passage of the body.
Furthermore, when the cartridge is installed in the backwashing position, a mark indicating "backwashing" is provided on the front surface of the cartridge, that is, at a position where the user can see the cartridge, and the cover for covering the cartridge is partially made of a transparent material. By forming by, it is possible to determine at a glance whether it is “purified water” or “under backflow cleaning”.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The body 1 is detachably attached to the faucet 3 via the connecting portion 2. Body 1 is central passage 1
a, the switching valve 4 is housed therein, and the faucet communication passage 1
b is switched between the raw water discharge passage 1c and the raw water passage 1d for communication. The cartridge 5 is detachably attached to the body 1. The cartridge 5 has a raw water inlet 5a and a purified water outlet 5b on the lower surface. This raw water inlet 5a is a body 1
Of the raw water supply passage 1d, and the purified water outlet 5b is communicated with the purified water outlet passage 1e of the body 1. A hollow fiber membrane case 9 accommodating a hollow fiber membrane 6 is accommodated in the cartridge 5, and activated carbon 7 is accommodated around it. Perforated plates 10 and 11 are arranged so as to form the upper and lower end surfaces of the activated carbon 7. A check valve 8 is arranged between the activated carbon 7 and the raw water inlet 5a. The check valve 8 is attached to the raw water inlet 5 by its own weight.
It blocks a, and when water pressure is applied, it floats upward and water reaches the activated carbon 7 through the gap around it. Hollow fiber membrane 6 and activated carbon 7
The upper ends of the two substantially coincide with each other and are communicated with each other via the water passage 30. Therefore, the upper end of the hollow fiber 6 is on the water inlet side. A transparent cap 5d is attached to the upper wall of the cartridge 5. This cap 5d has a concave shape. The hollow fiber membrane 6 is formed by bending the upper end thereof. Press the cartridge 5 to the body 1 side,
A cover 12 is detachably attached to the body 1.

In such a water purifier, if the switching valve 4 is set to the raw water side, the raw water can be taken out directly from the faucet 3 through the raw water discharge passage 1c. Further, when the switching valve 4 is set to the purified water side, the raw water flows from the faucet 3 to the raw water supply passage 1d.
To the raw water inlet 5a of the cartridge 5, and water pressure is applied to the check valve 8 to float it, and chlorine odor and dirt are adsorbed by the activated carbon 7 through the activated carbon 7, and then the hollow fiber membrane 6
Then, bacteria are removed from the upper end side thereof, and thereafter, purified water can be taken out to the outside through the purified water outlet 5b and the purified water passage 1e.

According to one embodiment of the present invention, the cartridge 5 has a raw water inlet 5a and a purified water outlet 5b.
The backwash water passage 1 formed on the body 1 on the same circumference with the center of the
A protrusion 20 is provided on f. According to this, for example, when backwashing the cartridge 5, the cartridge 5 is temporarily removed from the body 1, the cartridge 5 is rotated, the clean water outlet 5b of the cartridge 5 is aligned with the raw water feed passage 1d of the body 1, and Since the raw water inlet 5a is provided with the projection 20 in the backwash water passage 1f of the body 1, when the raw water inlet 5a of the cartridge 5 is fitted, the projection 20 is provided above the raw water inlet 5a of the cartridge 5. The stop valve 8 is pushed up to form a passage for backwashing.
When the faucet is twisted in this state, the raw water from the tap water flows in from the purified water outlet 5b of the cartridge 5 contrary to the flow of the purified water, and the impurities protected by the hollow fiber membrane 6 and the activated carbon 7 are pushed away, and the cartridge 5 Via the raw water inlet 5a, and is discharged through the backwash water passage 1f of the body 1. This method can facilitate the structure of the cartridge, which has been complicated by adding the backwashing function. Further, the structure is such that the life of the cartridge can be extended by the backwashing function.

Further, as another embodiment of the present invention, FIG.
When the cartridge 5 is mounted in the backwashing position as shown in FIG. 6, a mark 15 indicating "backwashing" is provided on the front surface of the cartridge 5, that is, at a position where the user can see the cartridge 5 and the cartridge is covered. Cover 12
Was partially formed of the transparent member 16. This allows the user to
It is possible to judge at a glance whether it is "purified water" or "under backwashing".

[0011]

According to the present invention, it is possible to simplify the structure of a cartridge which has been complicated by adding a backwashing function. Moreover, the structure is such that the life of the cartridge can be extended by the backwashing function. Furthermore, during backwashing, the cartridge is "backwashing".
Since the mark “” indicates a structure that can be confirmed by the user, the user can judge at a glance whether it is “purified water” or “backwashing”.

[Brief description of drawings]

FIG. 1 is a top view of a water purifier cartridge mounting portion according to an embodiment of the present invention.

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

FIG. 3 is a view of a single cartridge used in the water purifier of the embodiment of the present invention.

4 is a cross-sectional view taken along line A-O-B shown in FIG. 2 (during water purification).

5 is a cross-sectional view taken along the line AOC shown in FIG. 2 (during backwashing).
Is.

FIG. 6 is a perspective view of a water purifier according to an embodiment of the present invention.

[Explanation of symbols]

1 ... Body, 5 ... Cartridge, 8 ... Check valve, 15 ...
Marks, 16 ... Transparent member, 20 ... Protrusion.

Claims (6)

[Claims] 1. A body which can be directly connected to a faucet, a cartridge which is detachably attached to the body, and a cover which covers the cartridge, wherein the body has a raw water feed passage through which raw water from the faucet flows into the cartridge. In a water purifier formed with a water purification outlet passage for flowing out the water treated in the cartridge, in the cartridge,
A water purifier characterized in that a raw water inlet and a purified water outlet are formed, and each passage opening is formed on the same circumference with the center of the cartridge as an axis. 2. The water purifier according to claim 1, wherein the cartridge is mounted at different mounting positions on a body so that raw water can flow in from a water purification outlet of the cartridge. 3. The water purifier according to claim 1, wherein the raw water inlet and the purified water outlet of the cartridge are formed at asymmetrical positions with respect to the center of the cartridge. 4. The water purifier according to claim 2, wherein the raw water inlet of the cartridge is connected to a backwash water passage provided in the body when the cartridge is mounted at the backwash position. . 5. The method of claim 2, wherein when the cartridge is mounted at a backwash position by changing the mounting position on the body, the "backwash is being performed" is displayed on the front surface of the cartridge, that is, at a position where the user can see the cartridge. A water purifier characterized in that a cover for covering the cartridge is formed by a transparent member. 6. The projection provided in the backwash water passage according to claim 4, wherein a projection is provided in the backwash water passage of the body, and when a cartridge having a check valve inside is mounted at a backwash position, A water purifier characterized in that a check valve inside the cartridge is pushed up to form a passage for backwashing.