JPH0314485B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water purifier, and more particularly to a water purifier that is directly connected to a faucet and is equipped with a cartridge containing a treatment material.

[Conventional technology] Conventional water purifiers include a cartridge containing processing materials such as activated carbon and a filter in a case;
A device is known that includes a body having a raw water passage communicating a faucet connection portion and the cartridge, and the cartridge is detachably attached to the body.

[Problems to be Solved by the Invention] However, in such conventional water purifiers, if the water supply pressure from the faucet varies greatly, the flow rate passing through the treatment material also varies significantly, so that sufficient treatment cannot be achieved when the water supply pressure is low. If the setting is made to increase the performance, the flow rate will be too high when the water supply pressure is high and the processing performance of the material to be treated will not be fully demonstrated. If the setting was set to 1, it would not be possible to obtain a sufficient amount of water for use when the water supply pressure was low.

On the other hand, as shown in Japanese Unexamined Patent Publication No. 48-81346, the body and the faucet are connected by a hose,
A water purifier has been devised in which a water flow resistor is detachably provided at the faucet connection portion of the hose.

However, when using such water purifiers by replacing cartridges with different water flow resistances of the treated materials, it is necessary to replace the water flow resistors according to the water flow resistance of the treated materials, otherwise the treatment performance of the cartridges will not be sufficient. Therefore, it was troublesome that the water flow resistor at the faucet connection part had to be replaced each time. Moreover, a water flow resistor must be prepared separately depending on the type of cartridge, which increases the cost and is extremely troublesome to manage and handle.

[Means for Solving the Problems] The present invention has been made to solve such problems, and includes a body 3 that can be directly connected to a faucet 8, a cartridge 6 that is detachably attached to the body 3,
The body 3 includes a cover 7 that covers the cartridge 6, and the body 3 forms a raw water passage 9 through which raw water from a faucet flows into the cartridge 6, and a water purification port 1 through which water treated in the cartridge 6 flows out. In the water purifier, the cartridge 6 includes a case 23 whose interior is partitioned into a treatment material storage chamber 23a and an inflow passage 13.
In the processing material storage chamber 23a of this case 23, from above, a first processing material 21 for removing chlorine, etc. from the raw water, and a second processing material 22 for filtering floating matter in the raw water are installed in the order listed above. The inlet 13a of the inflow passage 13 connects to the raw water passage 9 of the body 3 at the periphery of the lower surface of the case 23.
In addition, the outlet 13 of the inflow passage 13
b is formed on the upper surface of the case 23 and communicates with the retention chamber 17 that guides the raw water from the outlet 13b above the processing material storage chamber, from the processing material storage chamber 23a. The outflow passage 14 that guides the purified water to the outside of the case 23 is connected to its outlet 14.
a is formed integrally with the case 23 so as to face the water purification port 11 of the body 3 at the center of the lower surface of the case 23, and the inflow passage 13 of the case 23 has a resistance part 1.
2 are integrally formed, and the resistance portion 12 is set to have a water flow resistance larger than the water flow resistance of other water flow portions in the case 23. .

[Function] According to this water purifier, when replacing the cartridge 6 with a different water flow resistance of the treated material, the resistance part 12 can have a water flow resistance corresponding to the type of the treated material. Therefore, by replacing each cartridge 6, water flow resistance suitable for the type of material to be treated can be automatically obtained. This eliminates the need to separately prepare multiple types of water flow resistors, which greatly simplifies management and handling, and prevents the user from forgetting to replace water flow resistors and not achieving sufficient treatment performance for the treated materials. It is possible to completely eliminate the possibility of being used as is.

Furthermore, the flow rate per unit time (/min) of the raw water flowing into the processing material in the cartridge 6 is throttled by the resistance section 12 of the inflow passage 13, and variations in the flow rate due to fluctuations in faucet water supply pressure are reduced. Since the amount of water is suppressed, the processing performance such as chlorine removal of the treated material is maintained.

Also, integrally with the case 23 of the cartridge 6,
Since the resistance part 12, the inflow passage 13, and the outflow passage 14 can be formed, there is no need to use any member other than the case 23 to create the resistance part 12, the inflow passage 13, and the outflow passage 14, so that the water purifier has a simple configuration. becomes.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 and 2. The water purifier 1 includes a faucet connection part 2,
The main components are a body 3, a handle 4, a dial 5, a cartridge 6, and a cover 7. Water purifier 1
can be attached to and detached from a faucet (water faucet) 8 through a faucet connection part 2. The body 3 is formed with a raw water passage 9 that allows raw water from the faucet to flow into the cartridge 6, a raw water port 10 that allows the raw water to flow directly downward from the faucet, and a water purification port 11 that allows the water treated in the cartridge 6 to flow downward. has been done. The pot 4 is rotated by a dial 5 directly connected to the pot 4 in the raw water passage 9 in the body 3, and this rotation switches the water flow to the raw water port 10 side or the purified water port 11 side.

The cartridge 6, which is detachably attached to the body 3, consists of a plastic case 23 whose interior is divided into a processing material storage chamber 23a and an inflow passage 13. The inlet 13a of the inflow passage 13 is connected to the case 2.
The raw water passage 9 of the body 3 is made to face the peripheral part of the lower surface of the body 3. The outlet 13b of the inflow passage 13 is connected to the case 2.
3, and communicates with a retention chamber 17 which guides the raw water from the outlet 13b into the processing material storage chamber 23a.

The outflow passage 14 that guides purified water from the treatment material storage chamber 23a of the cartridge 6 to the outside of the case 23 is formed integrally with the case 23 so that its outlet 14a faces the water purification port 11 of the body 3 at the center of the lower surface of the case 23. ing. The inlet passage 13 of the case 23 has a resistance part 12 integrally formed at its inlet 13a. The resistance portion 12 is set to have a higher water flow resistance than the water flow resistance of other water flow portions in the case 23 except for the inflow passage 13.

The case 23 of the cartridge 6 is connected to the inflow passage 13.
It is connected to the body 3 in a water-tight manner by a gasket 15 provided at the edge of the inlet 13a of the outflow passage 14 and a gasket 16 provided at the edge of the outlet 14a of the outflow passage 14. The retention chamber 17 formed in the upper surface of the case 23 of the cartridge 6 is connected to the outlet 13b of the inflow passage 13 via the check valve 19 and to the case 23 through the hole 20 provided in the center of the upper surface of the case 23. The processing material storage chamber 23a in the processing material storage chamber 23a is communicated with the upper part of the processing material storage chamber 23a.

Inside the processing material storage chamber 23a of the case 23, from above, there are a first processing material 21 for removing chlorine, etc. from raw water, and a second processing material 22 for filtering floating matter in the raw water.
These processing materials 21 and 22 are stored in this order. In this example, the first treatment material 2 made of activated carbon
1 and a second treatment material 22 consisting of a porous filter.
This makes up the treatment material that purifies the raw water from the faucet.

The O-ring 18 that constitutes the safety mechanism is
It is provided between the cover 7 and the upper surface of the cartridge 6 to prevent water in the retention chamber 17 from leaking between the cover 7 and the cartridge 6. A guide portion 24 is provided on the outer periphery of the upper end of the case 23 of the cartridge 6.
is provided. The O-ring 18 is supported between the cover 7 and the cartridge 6 by a guide portion 24 against internal pressure. A notch 25 is provided at one end of the guide portion 24 . When the second treatment material 21 becomes clogged and the pressure in the retention chamber 17 exceeds a certain pressure, a part of the O-ring 18 falls into the notch 25, and the raw water in the cartridge 6 leaks out of the cartridge 6. It becomes like this. This raw water is discharged to the outside of the body 3 from the relief hole 26 at the bottom of the body 3. By this discharge, clogging of the second processing material 21, that is, the lifespan of the cartridge 6 can be known, and deformation and damage of the body 3, cover 7, etc. due to abnormal pressure can be prevented.

Although the cartridge 6 is pressed downward and fixed to the inner surface of the upper wall of a cover 7 that is screwed onto the body 3, it is possible to remove the cover 7 and replace the cartridge 6 with a new one.

In the water purifier having the above configuration, when water is treated in the cartridge 6, the water is transferred from the faucet 8 to the faucet connection part 2 to
Kotoku 4 → Passage 9 → Resistance part 12 → Inflow passage 13 →
Check valve 19 → Retention chamber 17 → Hole 20 → First treated material 2
1 → second treatment material 22 → outflow passage 14 → water purification port 11
flow to and be processed. This water flow is throttled by the resistance part 12, and the water flow part after the resistance part 12 is kept at a low pressure, and the variation in the flow rate per unit time flowing into the cartridge 6 is suppressed, and the first treatment material 21 is Chlorine removal performance is maintained. That is,
The processing performance of the first treatment material 21 for treating chlorine, etc. is as follows, when the capacity of the first treatment material 21 is V and the amount of water is Q.
It is greatly influenced by the volumetric flow rate represented by Q/V, and if the volumetric flow rate becomes excessive, untreated water will flow out from the water purification port 11, which is not preferable. The water purifier 1 is attached to a faucet 8 of a water supply system, pump water channel, etc., but if the flow rate changes significantly due to a change in the water supply pressure,
Since the water purification effect cannot be achieved satisfactorily, the resistance section 12 suppresses this change in flow rate to a small amount to maintain the treatment performance.

In addition, the cover 7 and case 23 are often made of plastic for aesthetic reasons and manufacturing costs, but when the water supply pressure is applied directly to these plastic parts every day when the faucet 8 is opened and closed, pressure resistance becomes a problem, and plastic It becomes necessary for all the container structural parts to have a thick wall structure. In this regard, in this embodiment, the resistance part 12 is provided at the inlet 13a of the inflow passage 13 to restrict the flow rate of raw water flowing into the inflow passage 13, so that the water pressure applied to the cover 7 and the case 23 is kept low. Therefore, the cover 7 and the case 23 can have an economical thin structure.

The operation of the cartridge 6 equipped with the resistor section 12 will be explained in detail with reference to FIG.

First, until the second processing material 22 consisting of a filter becomes clogged, that is, under normal usage conditions,
The water supply pressure of the faucet 8 is the faucet water supply pressure A1 in Fig. 2,
Even if there is a large variation like B1, the resistance part 1
2 restricts the flow rate of raw water flowing into the cartridge 6, so as shown in Figure 2, (1) The pressure A2 in the retention chamber 17 when the faucet water supply pressure is A1, and the stagnation at the faucet water supply pressure B1. Flow chamber 1
There is no significant variation from the pressure B2 of 7.

(2) Cartridge 6 at faucet water supply pressure A1
Flow rate of raw water per unit time A3
(/min) and the flow rate B3 (/min) per unit time of the raw water flowing into the cartridge 6 at the faucet water supply pressure B1 do not vary greatly.

I understand that. Therefore, even if the faucet water supply pressure fluctuates, the total amount of raw water flowing into the cartridge 6 does not vary significantly, so the processing performance of chlorine, etc., by the first treatment material in the cartridge 6 fluctuates greatly. Therefore, variations in the water purification performance of the cartridge 6 can be suppressed.

Next, the clogging of the second treatment material 22 progresses and the water flow resistance of the second treatment material 22 becomes greater than the water flow resistance of the resistance section 12, that is, the life of the cartridge 6 is reached. In this state, as shown in Figure 2, even when the faucet water supply pressure is A1 (high pressure),
Even at the time of B1 (low pressure), the pressure A2 of the retention chamber 17 at the time of the faucet water supply pressure A1 is the faucet water supply pressure A1
, and the retention chamber 17 when the faucet water supply pressure is B1.
The pressure B2 rapidly approaches the faucet water supply pressure B1, respectively.

Therefore, when the faucet water supply pressure is A1, the total water supply amount a() until the pressure A2 of the retention chamber 17 reaches the operation setting pressure C of the safety mechanism, and the faucet water supply pressure
Total water supply amount b() until the pressure B2 in the retention chamber 17 reaches the operating setting pressure C of the safety mechanism at time B1
There is no large variation.

Therefore, when the faucet water supply pressure is high or low,
In either case, the total amount of water supplied into the cartridge 6 until the cartridge 6 reaches the end of its life does not vary greatly, so the performance of treating chlorine, etc. by the first treatment material 21 in the cartridge 6 does not vary greatly. Therefore, variations in the water purification performance of the cartridge 6 can be suppressed.

Furthermore, the flow rate A3 (/min) of raw water flowing into the cartridge 6 at the faucet water supply pressure A1, the flow rate B3 (/min) of raw water flowing into the cartridge 6 at the faucet water supply pressure B1, and the faucet water supply pressure A1 Pressure A2 in the retention chamber 17 at time and pressure B2 in the retention chamber 17 at time B1
As shown in FIG. 2, by the resistance portion 12, the pressure C can be kept low without greatly varying, so the operating set pressure C of the safety mechanism can be set low. Since the operating setting pressure C of this safety mechanism can be set low, variations in the operating setting value of the safety mechanism are allowed, so a low-accuracy safety mechanism can be used. Therefore, the safety mechanism may be one in which a gasket such as an O-ring 18 is simply pushed out from the water sealing surface by pressure, as in the embodiment shown in FIG. It may also be a type in which a thin wall portion with low pressure resistance is provided in a part thereof. In this way, the safety mechanism can have a simple structure.

According to the water purifier of this embodiment, when replacing cartridges 6 with different water flow resistances for treated materials, each cartridge has a resistance portion 12 having a water flow resistance corresponding to the type of treatment material. Therefore, by replacing each cartridge 6, water flow resistance suitable for the type of material to be treated can be automatically obtained. This eliminates the need to separately prepare multiple types of water flow resistors, which greatly simplifies management and handling, and prevents the user from forgetting to replace water flow resistors and not achieving sufficient treatment performance for the treated material. It is possible to completely eliminate the possibility of being used as is. Furthermore, in the water purifier of this embodiment, the resistance portion 12, the inflow passage 13, and the outflow passage 14 are formed integrally with the case 23 of the cartridge 6, so that the water purifier has a simple structure and is inexpensive without using separate members. can do.

[Effects of the Invention] According to the present invention, (a) By replacing the cartridge, water flow resistance suitable for the type of material to be treated can be automatically obtained, so that it is possible to use many types of water flow resistance elements. There is no need to prepare separately, making management and handling extremely easy, and it also eliminates the possibility of forgetting to replace the water flow resistor and using the treated material without achieving its full processing performance.

(b) Variations in the flow rate of raw water flowing into the processing material in the cartridge 6 due to fluctuations in faucet water supply pressure are suppressed by the resistance part 12 integrally provided in the water flow path 13 of the cartridge 6, and the cartridge To maintain the processing performance of the processing material in 6 regardless of fluctuations in faucet water supply pressure.

(c) Resistance section 12, inflow passage 13 and outflow passage 14
The cartridge 6 can be installed without using separate parts.
It can be formed integrally with the case 23, resulting in a simple configuration.

(d) If the cartridge 6 is provided with a safety mechanism that releases the water in the cartridge 6 when the pressure in the cartridge 6 exceeds a certain level, the safety mechanism can be made with low precision and low cost. .

It is possible to provide a water purifier that can be connected directly to a faucet and can be expected to have the following effects.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a water purifier according to an embodiment of the present invention, and Fig. 2 is a characteristic diagram showing changes in the retention chamber pressure and flow rate with respect to the total water supply amount of the water purifier according to an embodiment of the present invention. be. 1...Water purifier, 2...Faucet connection part, 3...Body, 6...Cartridge, 7...Cover, 8...
Faucet, 9...Raw water passage, 11...Water purification port, 12...
...Resistance part, 13...Inflow passage, 13a...Inlet,
13b...exit, 14...outflow passage, 14a...
Outlet, 17... Retention chamber, 21... First treated material, 2
2...Second treated material, 23...Case.

Claims (1)

[Scope of Claims] 1. A body 3 that can be directly connected to a faucet 8, a cartridge 6 that is removably attached to the body 3, and a cover 7 that covers the cartridge 6, and the body 3 receives raw water from the faucet. A raw water passage 9 that flows into the cartridge 6, and a water purification port 11 that allows the water treated in the cartridge 6 to flow out.
In the water purifier, the cartridge 6 includes a case 23 whose interior is partitioned into a treatment material storage chamber 23a and an inflow passage 13.
The processing material storage chamber 2 of this case 23
Inside 3a, from above, there are a first treatment material 21 for removing chlorine etc. from the raw water, and a second treatment material 22 for filtering floating matter from the raw water.These treatment materials 21, 2
2, and the inlet 13a of the inflow passage 13 connects to the raw water passage 9 of the body 3 at the periphery of the lower surface of the case 23.
In addition, the outlet 13 of the inflow passage 13
b is formed in the upper surface of the case 23, and is placed in the retention chamber 17 that guides the raw water from the outlet 13b upward in the processing material storage chamber 23a;
The outflow passage 14 that guides purified water from the processing material storage chamber 23a to the outside of the case 23 is connected to its outlet 14.
a is formed integrally with the case 23 so as to face the water purification port 11 of the body 3 at the center of the lower surface of the case 23, and the inflow passage 13 of the case 23 has a resistance part 1.
2 are integrally formed, and the resistance portion 12 is set to have a water flow resistance larger than the water flow resistance of other water flow portions in the case 23.