JP4113503B2 - Water purifier with bypass function - Google Patents

Description

  The present invention mainly relates to a water purifier that is installed in the middle of a water pipe of a private house, an apartment, etc. and that purifies tap water used for drinking or cooking, and in particular, has a bypass function for bypassing tap water. Thus, the present invention relates to a water purifier with a bypass function that can secure a flow rate when the amount of purified water is insufficient, etc., and can replace the cartridge without stopping the flow of tap water when replacing the cartridge.

In recent years, deterioration of the quality of public tap water has become a problem. This is because the quality of raw tap water has deteriorated, and it is necessary to inject a large amount of chlorine as an oxidizing agent or a sterilizing agent at a water purification plant.
If tap water contains a large amount of chlorine, it is not preferable from the point of view of a bad taste, a bad odor, and the health of the human body. For this reason, water purifiers that purify tap water are increasingly used in each household. This water purifier is generally attached to a faucet of a kitchen used for drinking most among household water supply equipment.

By the way, when a water purifier is installed only in the kitchen faucet, unpurified tap water flows directly into the water heater, and the heat exchanger pipe and valve in the water heater are connected to the outlet side of the water heater. The scale tends to adhere to the water heater and may cause a malfunction of the water heater.
Further, tap water and hot water used in bathrooms have a problem of damaging skin and hair because harmful substances such as chlorine and organic substances are not removed.

  Therefore, in order to solve these problems, all tap water used in water heaters, kitchens, bathrooms, washrooms, etc. is purified by being installed in water pipes located downstream of water meters in general households. Such water purifiers are widely used (for example, see Patent Document 1).

That is, the water purifier includes a case main body formed with a tap water inlet and a purified tap water outlet, a cylindrical filter medium (activated carbon forming filter) inserted into the case main body, and a filter medium. The hollow body is filled with ceramic particles and the like, and the inflow port and the outflow port of the case main body are connected to a water pipe located downstream of the water meter, respectively.
Therefore, according to the water purifier, all the tap water that has passed through the water meter flows into the water purifier, and after being purified there, the water heater is connected through a plurality of branch pipes connected in a branched manner to the water pipe, It will be supplied to the kitchen, bathroom, washroom, etc., and all tap water used in the home can be purified.

However, in the conventional water purifier, if the water purifier is used for a long time, the filter medium (activated carbon molded filter) is clogged, and the required amount of water cannot be obtained. Therefore, the filter material of the water purifier is regularly exchanged.
However, since the conventional water purifier allows all tap water to pass through the water purifier, the water stop valve provided in the water pipe upstream of the water purifier is closed when the filter medium is replaced. After stopping the flow of water, the water purifier must be removed from the water pipe and the filter media must be replaced. As a result, the conventional water purifier has to stop the water supply when exchanging filter media etc., and also requires troublesome work to stop the flow of tap water and work to remove the water purifier itself from the water pipe. There was a problem that it was inferior in property and handling property.

In order to replace the filter medium of the water purifier without stopping the flow of tap water, a bypass pipe may be formed to switch the flow of tap water.
However, in this case, when installing the water purifier, it is necessary to install a separate bypass line, which increases the construction and material costs, and requires a lot of work to install the bypass line. There was a problem of requiring space.
JP-A-9-108656

  The present invention has been made in view of such problems, and the object thereof is to secure a necessary amount of water even when the filter medium of the cartridge is clogged and to supply tap water when replacing the cartridge. The purpose of the present invention is to provide a water purifier with a bypass function that can replace the cartridge without stopping the flow, and can reduce the cost and installation space.

In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention has a cylindrical shape in which an inlet of tap water is formed at the outer peripheral edge and an outlet of purified tap water is formed at the center. A disk-shaped base with an integrally formed support, a branch pipe with one end connected to the base inlet, a water purification pipe with one end connected to the base outlet, one inlet and two A three-way valve having one outlet, one outlet connected to the other end of the branch pipe, and one end connected to the other outlet of the three-way valve, the other end being the other end of the water purification pipe A bypass pipe connected to the base, a detachable and airtightly attached to the base, and a container that forms a cartridge housing space with the base, and a cartridge housing space that is housed in the cartridge housing space and is detachable from the support portion of the base Inserted and supported, flowed into the cartridge housing space from the inlet There are particular feature was composed of the cartridge with a filtering material for purifying the road water.

  The invention of claim 2 of the present invention is provided with a check valve, an on-off valve or a three-way valve in the water purification pipe to prevent the tap water flowing in the bypass pipe from flowing back from the water purification pipe into the container when the tap water is not purified. It is characterized by doing so.

The water purifier with a bypass function according to claim 1 of the present invention has a cylindrical water inlet formed at the outer peripheral edge and a cylindrical support having a purified tap water outlet at the center. A disc-shaped base formed at one end, a branch pipe with one end connected to the inlet of the base, a water purification pipe with one end connected to the outlet of the base, and one inlet and two outlets. One end is connected to the other end of the branch pipe, and one end is connected to the other outlet of the three-way valve, and the other end is connected to the other end of the water purification pipe. A bypass pipe, a detachable and airtight attachment to the base, and a container forming a cartridge accommodation space between the base and the base; and the cartridge is accommodated in the cartridge accommodation space and is detachably inserted and supported by the support portion of the base; Tap water flowing into the cartridge housing space from the inlet It is composed of a cartridge with a filtering material for purifying.
As a result, the water purifier with a bypass function according to the present invention allows the tap water to flow even if the filter material of the cartridge is clogged and the amount of water is insufficient, or even if the water purifier is damaged and causes water leakage. The required amount of water can be ensured by switching to.
Moreover, the water purifier with a bypass function of this invention can replace | exchange a cartridge, without stopping the flow of tap water by switching the flow of tap water to the bypass pipe side.
Furthermore, since the water purifier with a bypass function of the present invention incorporates a three-way valve and a bypass pipe in the base in advance, it is not necessary to newly form a bypass pipe when installing the water purifier, and construction costs and material costs In addition, the installation space can be reduced, and installation is possible even in a narrow installation space such as an apartment.
In addition, since the water purifier with a bypass function of the present invention is detachably attached to the base and the cartridge is detachably attached to the base, the container is removed from the base when the filter material of the cartridge is clogged. Remove and replace only the cartridge. As a result, the water purifier itself is not removed from the water pipe, and the cartridge can be easily and quickly replaced.

In addition to the above effects, the water purifier with a bypass function according to claim 2 of the present invention can further exhibit the following effects.
That is, the water purifier with a bypass function according to claim 2 of the present invention is provided with a check valve, an on-off valve or a three-way valve in the water purification pipe, and therefore when the flow of tap water is switched to the bypass pipe side, It is possible to reliably prevent the flowing tap water from flowing back into the container from the water purification pipe, and it is possible to replace the cartridge and the like satisfactorily without impeding the replacement of the cartridge and the like.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a water purifier 1 with a bypass function according to a first embodiment of the present invention, and the water purifier 1 with a bypass function is interposed in a water pipe P on the downstream side of a water meter such as a private house or an apartment. The tap water W used for beverages, cooking, bathing, washing, etc. is purified.

  That is, the water purifier 1 with the bypass function is attached to the base 2 in a hermetically sealed manner with the base 2 having a bypass function having the inflow port 2 a and the outflow port 2 b of the tap water W. A container 3 that forms a space S, and a cartridge 5 that is housed in the cartridge housing space S and includes a filter medium 4 that purifies the tap water W that flows into the cartridge housing space S from the inflow port 2a. The container 3 and the cartridge 5 are detachable, and the container 3 is removed so that only the cartridge 5 can be replaced.

Specifically, the base 2 is formed in a disk shape from a metal material such as stainless steel or aluminum alloy, and a branch pipe 6, a water purification pipe 7, a three-way valve 8 and a bypass pipe 9 are provided on the lower surface side thereof. It is attached.
An inlet 2a for tap water W is formed at a part of the outer peripheral edge of the base 2, and one end of a branch pipe 6 is connected to the inlet 2a via a union nut 10. .
In addition, a cylindrical support portion 2 c into which the cartridge 5 is detachably inserted from the upper surface side of the base 2 is integrally formed at the center portion of the base 2 so as to protrude toward the lower surface side of the base 2. The lower end opening of the cylindrical support part 2c is an outlet 2b for purified tap water W '. One end of the water purification pipe 7 is connected to the outlet 2b via a union nut 10.
Further, on the upper surface of the base 2, an annular shallow groove 2d communicating with the inflow port 2a of the tap water W, and an annular O-ring groove 2e that is positioned around the annular shallow groove 2d and into which the O-ring 11 is fitted, Are formed respectively.
The three-way valve 8 includes a manual three-way valve 8 (or an electromagnetic three-way valve 8) having one inlet 8a and two outlets 8b and 8c. The other end of the branch pipe 6 is connected to 8b, and the other end 8c of the three-way valve 8 is connected to one end of the bypass pipe 9. The other end of the bypass pipe 9 is connected to the other end of the water purification pipe 7 via a T-shaped pipe joint 12.

  The container 3 is formed in a cylindrical shape whose upper end is closed by a metal material such as stainless steel or aluminum alloy, and a flange which is in close contact with the outer peripheral edge of the base 2 at the opened lower end. 3a is formed. In this container 3, an O-ring 11 is fitted in the O-ring groove 2 e of the base 2, and the flange 3 a of the container 3 is overlapped with the outer peripheral edge of the base 2. In this state, the flange 3 a is connected to the base 2 side with a plurality of bolts 13. By tightening and fixing to the base 2, it is attached to the base 2 in an airtight manner. By attaching the container 3 to the base 2, a cartridge housing space S is formed between the base 2 and the container 3.

The cartridge 5 is arranged in a hollow cylindrical filter medium 4 that removes harmful substances such as chlorine and trihalomethane contained in the tap water W when the tap water W flows in the radial direction, and a hollow portion of the filter medium 4. A cylindrical core material 13 made of wire mesh or punched metal, which is provided and circulates tap water W, a disk-shaped upper support plate 14 which supports the upper end of the filter material 4, and a support portion 2 c of the base 2. A cylinder that is detachably inserted and supported and includes a lower support plate 15 that supports the lower end portion of the filter medium 4, and is a cylinder that is detachably inserted and supported by the support portion 2 c of the base 2 at the center of the lower support plate 15. The insertion portion 15a is formed so as to protrude downward, and the insertion portion 15a is supported by the base 2 by being inserted into the support portion 2c of the base 2. An annular O-ring groove 15b into which the O-ring 11 is fitted is formed on the outer peripheral surface of the insertion portion 15a.
The filter medium 4 is composed of a fibrous activated carbon filter obtained by forming activated coke charcoal into a fiber and solidifying it into a cylindrical shape. This fibrous activated carbon filter has a chlorine removing power of 10 times or more in the same volume as that of granular activated carbon, has a large flow rate, and a processing guess is 3 times or more.

Next, the case where the water purifier 1 with a bypass function mentioned above is used in a general household is demonstrated.
The water purifier 1 with the bypass function is interposed in a water pipe P on the downstream side of a water meter (not shown) in a general household, and the water pipe P connected to the water meter is connected to the inlet 8a of the three-way valve 8. One end of the water supply pipe 7 is connected, and the water purification pipe 7 has a base end of a branched water pipe P that supplies purified tap water W 'to the terminal water supply equipment such as water taps and water heaters in the home. The parts are connected via a pipe joint 12.
Since this water purifier 1 with a bypass function incorporates the three-way valve 8 and the bypass pipe 9 in the base 2 in advance, it is not necessary to form a new bypass pipe when installing the water purifier 1, and construction costs and materials The cost can be reduced and the installation space can be reduced, and the installation is possible even in a narrow installation space such as an apartment.

In order to purify the tap water W using the water purifier 1, the three-way valve 8 is switched and operated so that the tap water W from the water meter and the water pipe P passes through the water purifier 1. Then, the tap water W from the water pipe P flows into the inlet 2a of the base 2 through the three-way valve 8 and the branch pipe 6, and enters the cartridge housing space S from the annular shallow groove 2d formed on the upper surface of the base 2. After flowing in, the filter material 4 passes through the outer peripheral surface in the radial direction and reaches the core material 13. Meanwhile, the tap water W is removed of harmful substances such as chlorine by the filter medium 4 made of a fibrous activated carbon filter.
Purified tap water W ′ that has reached the core material 13 flows into the core material 13, flows downward in the core material 13, flows out from the outlet 2 b of the base 2 into the purified water pipe 7, and then enters the purified water pipe 7. Is sent to the building through a branched water pipe P and used for beverages, cooking, bathing, washing, etc.

  When the amount of the tap water W purified by the filter medium 4 of the cartridge 5 is clogged as time passes, the tap water W from the water pipe P enters the bypass pipe 9. The three-way valve 8 is switched to flow. Then, the tap water W from the water pipe P flows directly to the downstream water pipe P through the three-way valve 8 and the bypass pipe 9. As a result, even when the filter medium 4 of the cartridge 5 is clogged and the amount of water is insufficient, or even when the water purifier 1 is damaged and water leaks, by switching the flow of the tap water W to the bypass pipe 9 side, The necessary amount of water can be secured.

  When the cartridge 5 clogged with the filter medium 4 is replaced, the three-way valve 8 is switched so that the tap water W from the water pipe P flows into the bypass pipe 9, and the container 3 is used as a base in this state. 2 and after removing the cartridge 5 from the base 2, a new cartridge 5 is inserted into the base 2 and the container 3 is attached to the base 2 in an airtight manner. At this time, since the flow of the tap water W is switched to the bypass pipe 9 side, the cartridge 5 can be replaced without stopping the flow of the tap water W. Further, since the cartridge 5 is detachable from the base 2 interposed in the water pipe P, the water purifier 1 itself is not removed from the water pipe P when the cartridge 5 is replaced. Exchange can be done easily and quickly.

FIG. 2 shows a water purifier 1 with a bypass function according to the second embodiment of the present invention. The water purifier 1 is provided with a check valve 16 in the water purifying pipe 7, and the inside of the bypass pipe 9 when the tap water W is not purified. Is prevented from flowing backward from the water purification pipe 7 into the container 3.
This water purifier 1 is configured in the same structure as the water purifier 1 shown in FIG. 1 except that a check valve 16 is provided in the water purifying pipe 7, and has the same parts and members as the water purifier 1 shown in FIG. 1. Are denoted by the same reference numerals, and detailed description thereof is omitted.
Since this water purifier 1 is provided with the check valve 16 in the water purification pipe 7, when the flow of the tap water W is switched to the bypass pipe 9 side, the tap water W flowing in the bypass pipe 9 is transferred from the water purification pipe 7 to the container. Therefore, it is possible to reliably prevent the cartridge 5 and the like from being disturbed, and to exchange the cartridge 5 and the like satisfactorily and smoothly.

3 and 4 show the water purifier 1 with a bypass function according to the third and fourth embodiments of the present invention, respectively, and the water purifier 1 according to the third embodiment is provided with an opening / closing valve 17 in the water purification pipe 7. Moreover, the water purifier 1 which concerns on 4th Embodiment provides the three-way valve 18 in the water purification pipe 7, and the tap water W which flows through the bypass pipe 9 at the time of non-purification of the tap water W enters the container 3 from the water purification pipe 7 It is intended to prevent backflow.
These water purifiers 1 are configured in the same structure as the water purifier 1 shown in FIG. 2 except that an open / close valve 17 or a three-way valve 18 is provided in the water purifying pipe 7, and are the same as the water purifier 1 shown in FIG. The same reference numerals are assigned to the parts and members, and detailed description thereof is omitted.
The water purifier 1 according to the third and fourth embodiments can achieve the same effects as the water purifier 1 according to the second embodiment.

  In each of the above embodiments, the filter medium 4 is made of fibrous activated carbon. In other embodiments, the filter medium 4 is made of cotton yarn, polypropylene yarn, reverse osmosis membrane, hollow fiber, or the like. It may be formed from, for example. In addition, a cylindrical primary filter formed of a nonwoven fabric or the like is disposed on the outer peripheral surface of the filter medium 4 on a concentric circle so that relatively large foreign matters are removed before the tap water W passes through the filter medium 4. Also good. Furthermore, granular ceramics (for example, granular piezoelectric electronic ceramics that improve surface activity and penetrating power, granular far-infrared ceramics that improve dissolving power and thermal conductivity, and improvement in taste are provided in the core 13. Filled with granular mineral ceramics, granular magnetic ceramics for improving dissolving power and penetrating power, granular copper ion ceramics for antibacterial purposes, and activating the tap water W purified by the filter medium 4 Also good.

It is a schematic longitudinal cross-sectional view of the water purifier with a bypass function which concerns on the 1st Embodiment of this invention. It is a schematic longitudinal cross-sectional view of the water purifier with a bypass function which concerns on the 2nd Embodiment of this invention. It is a schematic longitudinal cross-sectional view of the water purifier with a bypass function which concerns on the 3rd Embodiment of this invention. It is a schematic longitudinal cross-sectional view of the water purifier with a bypass function which concerns on the 4th Embodiment of this invention.

Explanation of symbols

  1 is a water purifier with a bypass function, 2 is a base, 2a is an inlet of the base, 2b is an outlet of the base, 3 is a container, 4 is a filter medium, 5 is a cartridge, 7 is a water purification pipe, 8 is a three-way valve, 8a Is an inlet of the three-way valve, 8b and 8c are outlets of the three-way valve, 9 is a bypass pipe, 16 is a check valve, 17 is an on-off valve, 18 is a three-way valve, S is a cartridge housing space, and W is tap water.

Claims (2)

The cylindrical support part (2c) which has the inflow port (2a) of tap water (W) in an outer peripheral part, and has the outflow port (2b) of the purified tap water (W ') in the center part A disc-shaped base (2) integrally formed, a branch pipe (6) having one end connected to the inlet (2a) of the base (2), and an outlet of the base (2) at one end It has a water purification pipe (7) connected to (2b), one inlet (8a) and two outlets (8b), (8c), one outlet (8b) being the other end of the branch pipe (6) The three-way valve (8) connected to the part, one end part is connected to the other outlet (8c) of the three-way valve (8), and the other end part is connected to the other end part of the water purification pipe (7). A cartridge housing space (S) is formed between the bypass pipe (9) and the base (2) so as to be detachable and airtight. The container (3) is accommodated in the cartridge accommodating space (S), is detachably inserted and supported by the support portion (2c) of the base (2), and flows into the cartridge accommodating space (S) from the inlet (2a). A water purifier with a bypass function, comprising a cartridge (5) provided with a filter medium (4) for purifying the tap water (W) .     A check valve (16), an on-off valve (17) or a three-way valve (18) is provided in the water purification pipe (7), and the tap water (W) flowing through the bypass pipe (9) when the tap water (W) is not purified is provided. The water purifier with a bypass function according to claim 1, wherein the water purifier is prevented from flowing back into the container (3) from the water purification pipe (7).

Images