JP6995404B2 - Cartridge for water purifier - Google Patents

Description

The present invention relates to a water purifier cartridge that is used in a kitchen, a washroom, a bathroom, or the like and is interchangeably housed in a water purifier that removes impurities from tap water (raw water).

Some water purifiers that are attached to the tip of water supply equipment at home and used have replaceable cartridges for water purifiers that have a purifying material that removes impurities from raw water.
Further, it has a raw water flow path for discharging raw water as it is and a purified water flow path for discharging purified water obtained by filtering the raw water with a cartridge for a water purifier, and a flow path switching valve for switching between raw water discharge and purified water discharge is used for the water purifier. There was a water purifier provided on the downstream side of the cartridge (Patent Document 1).

Japanese Unexamined Patent Publication No. 2001-17342

In such a water purifier, when the raw water discharge is switched from the raw water discharge to the purified water discharge, the raw water flow path is momentarily closed, so that water hammer or high water pressure is generated and transmitted to the upstream side, and the purifying material of the water purifier cartridge is released. It could be damaged.
In addition, since the replacement cycle of the water purifier cartridge is often several months, the attachment part between the water purifier and the water purifier cartridge may stick during long-term contact, and water purification may occur during replacement. The dexterity cartridge could be difficult to remove or damaged.

The present invention has been made to solve the above problems, and provides a cartridge for a water purifier capable of preventing damage to the purifying material due to water hammer or high water pressure that occurs when switching from raw water discharge to purified water discharge. That is the issue.
Another object of the present invention is to provide a water purifier cartridge capable of preventing the attachment portion between the water purifier and the water purifier cartridge from sticking.

In the present invention, the means for solving the above problems are as follows.
The first invention is a water purifier cartridge that is interchangeably housed in a water purifier accommodating portion, and has a purifying material that removes impurities from water, and raw water permeates the purifying material into the water purifier. A raw water flow path that flows to the downstream side without any action and a water purification flow path through which the raw water permeates the purifying material and flows to the downstream side are formed, and in the water purifier, the raw water flow path or the water purification flow path is used. It is characterized by being arranged upstream of the flow path switching valve that selects discharge, and being arranged downstream of the purifying material, and having a shock absorber that blocks water from the flow path switching valve to the purifying material. do.

The second invention is characterized in that, in the raw water flow path, the surface on the downstream side of the buffer portion has a plane substantially perpendicular to the mounting direction of the water purifier cartridge to the water purifier. do.

The third invention is characterized in that the position corresponding to the upstream end when arranged in the accommodating portion also has a plane substantially perpendicular to the mounting direction of the water purifier cartridge to the water purifier. ..

The fourth invention is characterized in that, in the water purification flow path, the surface on the upstream side of the buffer portion has a plane substantially perpendicular to the mounting direction of the water purifier cartridge to the water purifier. do.

The fifth invention is a cartridge for a water purifier that is interchangeably housed in a storage portion of the water purifier, and has a purifying material for purifying water, and raw water does not permeate the purifying material in the water purifier. A raw water flow path that flows downstream and a water purification flow path through which raw water permeates the purifying material and flows downstream are formed, and in the water purifier, discharge from the raw water flow path or the water purification flow path is discharged. It has a buffer portion located upstream of the flow path switching valve to be selected, and the surface on the downstream side of the buffer portion faces the raw water flow path and the surface on the upstream side faces the purified water flow path. It is characterized by that.

According to the first invention, it is a cartridge for a water purifier that is interchangeably housed in the accommodating portion of the water purifier and has a purifying material that removes impurities from water. A raw water flow path that flows downstream without permeating through the water and a purified water flow path through which the raw water permeates the purifying material and flows downstream, and in the water purifier, the raw water flow path or the water purification flow path. By having a shock absorber that is arranged upstream of the flow path switching valve that selects the discharge from the water flow switching valve and downstream of the purifying material and that blocks water from the flow path switching valve to the purifying material. , Water impact or high water pressure can be absorbed by the shock absorber to prevent damage to the purifying material and other members.

According to the second invention, in the raw water flow path, the surface on the downstream side of the buffer portion has a plane substantially perpendicular to the mounting direction of the water purifier cartridge to the water purifier. , It is possible to absorb water strikes more efficiently and prevent the attachment portion of the water purifier and the cartridge for the water purifier from sticking.

According to the third invention, the position corresponding to the upstream end when arranged in the accommodating portion also has a plane substantially perpendicular to the mounting direction of the water purifier cartridge to the water purifier. Each time the raw water discharge is switched to the purified water discharge, water strikes, etc. are absorbed by this vertical plane, and the water purifier cartridge swings in the mounting direction, so it is possible to prevent the mounting part of the water purifier and the water purifier cartridge from sticking. can.

According to the fourth invention, in the water purification flow path, the surface on the upstream side of the buffer portion has a plane substantially perpendicular to the mounting direction of the water purifier cartridge to the water purifier. Every time the raw water discharge is switched to the purified water discharge, the water passing through the water purification flow path collides with this vertical plane, and the water purifier cartridge swings in the mounting direction. Can be prevented.

According to the fifth invention, since the downstream surface of the shock absorber faces the raw water flow path and the upstream surface faces the purified water flow path, each time the raw water discharge is switched to the purified water discharge. Since the shock absorber absorbs water hammer and the like, the water purifier cartridge swings in the pulling direction, so that it is possible to prevent the attachment portion between the water purifier and the water purifier cartridge from sticking. Further, since the water purifier cartridge then swings in the mounting direction, it is possible to prevent the mounting portion of the water purifier and the water purifier cartridge from sticking to each other.

It is a side view of the water purifier which accommodated the cartridge for the water purifier which concerns on embodiment of this invention. It is a cross-sectional view taken along the line ZZ in FIG. 1 showing the water purifier. It is a figure which shows the cartridge for the water purifier which concerns on embodiment of this invention, (a) is the perspective view seen from the downstream side, (b) is the perspective view seen from the upstream side. It is a table which shows the change of the water pressure at the time of switching from the raw water discharge to the purified water discharge at the point A to D in FIG. It is a table which shows the change of the water pressure at the time of switching from the purified water discharge to the raw water discharge at the point A to D in FIG.

Hereinafter, the water purifier and the cartridge for the water purifier according to the first embodiment of the present invention will be described.
As shown in FIG. 1, the water purifier 1 is a shower head type water purifier that is connected to a water supply facility via a hose or the like and has a discharge port formed at the tip thereof.
The water purifier 1 has a straight discharge port 2a and a shower discharge port 2b as discharge ports, and is provided with a discharge switching valve for switching between straight discharge from the straight discharge port 2a and shower discharge from the shower discharge port 2b. ..
Although the shower head type water purifier is described in the present embodiment, the content of the present invention is not limited to this, and it may be used for a water purifier having another shape.

As shown in FIGS. 1 and 2, a connection port 3 for introducing tap water (raw water) from a hose or the like is formed at the base end of the water purifier 1.
Inside the water purifier 1, a flow path communicating from the connection port 3 to the discharge ports 2a and 2b is provided, and a substantially cylindrical accommodating portion 5 for accommodating the water purifier cartridge 4 is formed in this flow path. ing.
In the water purifier 1, the head 6 forming the discharge ports 2a and 2b and the grip portion 7 that the user can hold with one hand are screwed together, and the purification performance of the water purifier cartridge 4 deteriorates or fails. If so, it can be replaced with a new water purifier cartridge 4 by disassembling the head 6 and the grip portion 7.

As shown in FIGS. 2 and 3, the water purifier cartridge 4 is attached to the activated carbon 8 solidified in a cylindrical shape, the upstream cap 9 attached to the upstream side of the activated carbon 8, and the downstream side of the activated carbon 8. It is composed of the downstream cap 10 that has been removed.
When the raw water permeates the activated carbon 8, the chemical components dissolved in the raw water and the floating fine solid substances are adsorbed or filtered by the activated carbon 8.
The outer peripheral surface of the activated carbon 8 may be covered with a non-woven fabric or the like.

As shown in FIG. 3, the upstream cap 9 has a disk portion 9a that closes the upstream end of the activated carbon 8.
As shown in FIG. 2, when the disk portion 9a is accommodated in the accommodating portion 5, it abuts on the rib 5a erected at the upstream end of the accommodating portion 5 and is positioned in the pipe direction. It does not block the water entrance to 5.

As shown in FIGS. 2 and 3, the downstream side cap 10 is covered with the downstream end of the activated carbon 8, and a substantially covered cylindrical connecting cylinder portion 10a is erected on the downstream side.
The connection cylinder portion 10a is internally fitted into a tubular cartridge receiver 11 provided on the head 6 of the water purifier 1, and the position of the water purifier cartridge 4 is fixed in the accommodating portion 5. The end face on the downstream side of the connecting cylinder portion 10a is closed by the disc-shaped cushioning portion 10d.
A water flow path communicating with the internal flow path 12 of the activated carbon 8 is formed in the downstream side cap 10, and the outlet 10e thereof is formed on the peripheral surface of the connecting cylinder portion 10a.
Since the O-rings 13 and 13 are fitted on the outer peripheral surface of the connection cylinder portion 10a one by one on the upstream side and the downstream side of the outlet 10e, the connection cylinder portion 10a is watertightly fixed to the cartridge receiver 11. ..

The water (purified water) that has flowed into the internal flow path 12 from the outer periphery of the activated carbon 8 is supplied to the cartridge receiver 11, passes through the inside of the head 6, and is selectively discharged from the straight water discharge port 2a or the shower discharge port 2b. In the flow path in the downstream cap 10, a non-woven fabric 10b for removing fine powder and the like flowing out from the activated carbon 8 and a sterilizing ceramic 10c for preventing bacteria from growing in the retained water are arranged. The downstream cap 10 is formed by assembling two parts so as to accommodate the non-woven fabric 10b and the sterilizing ceramic 10c.
In the present specification, a member having a function of removing impurities from water or sterilizing germs, such as activated carbon 8 and sterilizing ceramic 10c, is referred to as a purifying material.

As shown in FIG. 2, a water purification receiving port 11a is formed on the peripheral surface of the cartridge receiver 11 at a position corresponding to the outlet 10e when the water purifier cartridge 4 is attached, and buffers when the water purifier cartridge 4 is attached. A raw water receiving port 11b is formed at a position downstream of the portion 10d.
The purified water receiving port 11a communicates with the purified water shutoff valve 15 of the head 6, and the raw water receiving port 11b communicates with the raw water shutoff valve 16 of the head 6.

By accommodating the cartridge 4 for the water purifier, the raw water introduced from the connection port 3 is formed in the water purifier 1 between the outer peripheral surface of the activated carbon 8 and the inner wall of the accommodating portion 5 without permeating the activated carbon 8. A raw water flow path is formed which passes through the outer peripheral side flow path 14 and flows into the cartridge receiver 11 from the raw water receiving port 11b and flows to the discharge ports 2a and 2b through the raw water shutoff valve.
Further, in the water purifier 1, the raw water introduced from the connection port 3 permeates the activated carbon 8 from the outer peripheral side flow path 14 and flows into the inner flow path 12, and the purified water receiving port from the outlet 10a of the downstream side cap 10. A water purification flow path that flows out to 11b and flows to the discharge ports 2a and 2b via the water purification shutoff valve is formed.
The head portion 6 is provided with a flow path switching valve that selects and closes either the raw water shutoff valve 16 or the purified water shutoff valve 15 by operating the push button 6a and opens the other.

When the water purifier cartridge 4 is accommodated in the accommodating portion 5 of the water purifier 1, the surface on the upstream side of the cushioning portion 10d and the extending direction of the cartridge receiving portion 11 and the connecting cylinder portion 10a with respect to the mounting direction of the water purifier cartridge 4, that is, the extending direction of the cartridge receiving portion 11 and the connecting cylinder portion 10a. Both downstream surfaces are vertical planes.
Further, when the water purifier cartridge 4 is accommodated in the accommodating portion 5 of the water purifier 1, the disk portion 9a is also a flat surface perpendicular to the mounting direction of the water purifier cartridge 4.

In this water purifier, when switching from the raw water discharge in which the raw water flow path is open to the purified water discharge in which the raw water flow path is open, the raw water shutoff valve 16 is momentarily closed to generate water hammer or high water pressure. Then, it propagates upstream.
FIG. 4 shows the results of measuring the water pressure at the time of discharging the raw water and the water pressure increased at the time of switching from the discharge of the raw water to the discharge of purified water from the points A to the D in FIG. Point A is near the entrance of the accommodating part 5 upstream of the disk 9a, point B is the raw water flow path downstream of the purifying material, point C is the raw water flow path downstream of point B and immediately upstream of the raw water shutoff valve, and point D is. The water purification channel was used immediately upstream of the water purification shutoff valve.

Whether the water pressure at the time of discharging raw water is relatively low (0.05 MPa at point A), moderate (0.09 MPa at point A), or relatively high (0.14 MPa at point A), It was found that when the raw water discharge was switched to the purified water discharge, the water pressure increased sharply at the point C, and the water pressure propagated from the point C to the point A without being attenuated. This increase in water pressure reached twice the initial water pressure supplied to the water purifier 1 at the time of discharging the raw water, that is, the water pressure at point A at the time of discharging the raw water.
There was no significant change in water pressure at point D, which is the water purification flow path near the water purification shutoff valve.

At this time, as shown in FIG. 2, since the shock absorber 10d blocks water hammer from the raw water shutoff valve 16 to the sterilizing ceramic 10c, it is possible to prevent the internal sterilizing ceramic 10c from being damaged.
Further, the path through which the water hammer passes from the raw water shutoff valve 16 through the inside of the downstream cap 10 and reaches the internal flow path 12 of the activated carbon 8 is blocked by the buffer portion 10d. The cylindrical activated carbon 8 has a higher density on the inner peripheral side than on the outer peripheral side, is strong against the force from the outer peripheral side, and is often relatively brittle to the force from the inner peripheral side. It is possible to prevent the attack from damaging the activated carbon 8 from the inner peripheral side.
By providing such a cushioning portion 10d, it is possible to incorporate a member having low durability as an internal component or a purifying material of the water purifier cartridge 4.
Further, the cushioning portion 10d closes the downstream end surface of the downstream cap 10, and prevents linear foreign matter (not shown) from the outside from reaching the sterilizing ceramic 10c and the activated carbon 8 through the outlet 10e on the peripheral surface. Due to the formation, even if the water purifier cartridge 4 is dropped or hit against a sharp foreign substance when it is handled, for example, the sharp foreign substance sticks almost parallel to the longitudinal direction of the water purifier cartridge and reaches the internal flow path 12. Since the situation of penetrating is avoided, it is possible to prevent the inside of the sterilizing ceramic 10c and the activated carbon 8 from being damaged.

Further, each time the raw water discharge is switched to the purified water discharge, the buffer portion 10d absorbs water hammer or the like, so that the water purifier cartridge swings in the pulling direction. Etc. can be prevented from sticking.
Further, when water hammer or the like propagates upstream from the raw water receiving inlet 11b, the upstream side of the upstream side cap 9 becomes higher pressure than the downstream side at the moment when it reaches the upstream side of the upstream side cap 9, so that the disk portion 9a is pressed from the upstream, and the water purifier cartridge 4 swings in the mounting direction, so that the O-ring 13 or the like, which is the mounting portion between the water purifier 1 and the water purifier cartridge 4, can be prevented from sticking.
Immediately after that, the water purification shutoff valve is opened and water flows through the water purification flow path, so that the water flowing into the accommodating portion 5 collides with the disk portion 9a of the upstream cap 9 and permeates the purification material. The water flowing into the downstream cap 10 collides with the upstream surface of the shock absorber 10d, and the water purifier cartridge 4 swings in the mounting direction. Therefore, the O-ring which is the mounting portion between the water purifier 1 and the water purifier cartridge 4. It is possible to prevent sticking of 13 and the like.

By providing the buffer portion 10d and the disk portion 9a in this way, it is possible to prevent the activated carbon 8 and the sterilizing ceramic 10c from being damaged by water hammer or the like, and the water purifier 1 and the water purifier by using water hammer or the like. It is possible to prevent the attachment portion from sticking to the dexterous cartridge 4.
Further, since the cushioning portion 10d and the disk portion 9a have a plane substantially perpendicular to the mounting direction of the water purifier cartridge 4, water hammer and the like can be absorbed more efficiently for the water purifier 1 and the water purifier. It is possible to prevent the mounting portion from sticking to the cartridge 4.
Further, since the water purifier cartridge 4 swings in the pull-out direction and then in the mounting direction due to water hammer or the like or the water flow in the water purification channel, the movement due to each swing is offset, and the water purifier cartridge 4 receives the cartridge 11. It can be prevented from falling out of.
By providing the buffer portion 10d on the downstream side cap 10 having the connection cylinder portion 10a and the O-ring 13 which are the attachment portions to the water purifier 1, the shock such as water hammer can be more effectively swung the water purifier cartridge 4. It is possible to prevent the attachment portion of the water purifier 1 and the water purifier cartridge 4 from sticking to each other.

In addition, in the present embodiment, the upstream side surface and the downstream side surface of the shock absorber 10d are flat surfaces that are completely perpendicular to the mounting direction of the water purifier cartridge 4, but they do not necessarily have to be completely flat surfaces. There is no problem even if it has another shape that can absorb water hammer or the like more efficiently, or can effectively convert the impact of water hammer or the like into the swing of the water purifier cartridge 4. For example, the upstream surface and the downstream surface of the cushioning portion 10d may have a hemispherical shape, a crater shape, a conical shape, an inverted conical shape, a trapezoidal shape, or another shape.

In the purified water flow path, the flow path resistance is larger than that of the raw water flow path due to permeation of the purifying material, and the water pressure in the vicinity of the purified water shutoff valve is small. Therefore, as shown in FIG. 5, when switching from the purified water discharge to the raw water discharge, a large increase in water pressure did not occur except at point D.
Further, the increase in the water pressure at the point D was also lower than the water pressure at the point A at the time of discharging the purified water.

The following appendices are part of the invention described in this application.
[Appendix 1]
A water purifier cartridge that is replaceably housed in the water purifier's compartment.
Has a purifying material that purifies water,
In the water purifier, a raw water flow path in which raw water flows downstream without penetrating the purifying material and a water purification flow path in which raw water permeates the purifying material and flows downstream are formed.
In the water purifier, it is arranged upstream of the flow path switching valve that selects discharge from the raw water flow path or the water purification flow path, and is
A cartridge for a water purifier, which is arranged downstream of the purifying material and has a buffer portion for blocking water hammer from the flow path switching valve to the purifying material.
[Appendix 2]
The water purification according to Appendix 1, wherein in the raw water flow path, the surface on the downstream side of the buffer portion has a plane substantially perpendicular to the mounting direction of the water purifier cartridge to the water purifier. Dexterity cartridge.
[Appendix 3]
The water purifier according to Appendix 2, wherein the water purifier cartridge is provided with a plane substantially perpendicular to the mounting direction of the water purifier cartridge to the water purifier even at a position corresponding to the upstream end when the water purifier is arranged in the storage portion. cartridge.
[Appendix 4]
The water purification channel according to Appendix 2, wherein in the water purification flow path, the surface on the upstream side of the buffer portion has a plane substantially perpendicular to the mounting direction of the water purifier cartridge to the water purifier. Dexterity cartridge.
[Appendix 5]
A water purifier cartridge that is replaceably housed in the water purifier's compartment.
Has a purifying material that purifies water,
In the water purifier, a raw water flow path in which raw water flows downstream without penetrating the purifying material and a water purification flow path in which raw water permeates the purifying material and flows downstream are formed.
In the water purifier, the water purifier has a buffer portion arranged upstream of the flow path switching valve that selects discharge from the raw water flow path or the water purification flow path, and the surface on the downstream side of the buffer section faces the raw water flow path. A cartridge for a water purifier, which is characterized in that the upstream surface faces the water purification channel.

1 Water purifier 2a (straight) Discharge port 2b (Shower) Discharge port 3 Connection port 4 Water purifier cartridge 5 Storage part 5a Rib 6 Head 6a Push button 7 Grip part 8 Activated carbon 9 Upstream side cap 9a Disc part 10 Downstream side cap 10a Connection cylinder 10b Non-woven fabric 10c Sterilization ceramic 10d Buffer 10e Outlet 11 Cartridge receiver 11a Purified water receiving port 11b Raw water receiving port 12 Internal flow path 13 O ring 14 Outer peripheral side flow path 15 Purified water shutoff valve 16 Raw water shutoff valve

Claims (2)

A water purifier cartridge that is replaceably housed in the water purifier's compartment.
Has a purifying material that purifies water,
In the water purifier, a raw water flow path through which raw water flows to the downstream side and a water purification flow path through which purified water flows to the downstream side are formed, and at the same time.
In the water purifier, it is arranged upstream of the flow path switching valve that selects discharge from the raw water flow path or the water purification flow path, and is
A cartridge for a water purifier, which is arranged downstream of the purifying material and has a buffer portion for blocking water hammer from the flow path switching valve to the purifying material. A water purifier cartridge that is replaceably housed in the water purifier's compartment.
Has a purifying material that purifies water,
In the water purifier, a raw water flow path through which raw water flows to the downstream side and a water purification flow path through which purified water flows to the downstream side are formed, and at the same time.
In the water purifier, the water purifier has a buffer portion arranged upstream of the flow path switching valve that selects discharge from the raw water flow path or the water purification flow path, and the surface on the downstream side of the buffer section faces the raw water flow path. A cartridge for a water purifier, which is characterized in that the upstream surface faces the water purification channel.

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