JPH0824841A - Water purifying filter and electrolyzed water making apparatus using the same - Google Patents

Abstract

PURPOSE:To obtain a purifying means purifying and filtering flowing water (tap water or the like) and a water channel effectively using a filter means and to efficiently wash the filter means. CONSTITUTION:A purifying means 1 having an activated carbon bed 1d and a filter means 2 having a hollow yarn membrane bed 2d are separately provided and allowed to communicate with each other by a water supply channel changeover means 3, a drain water channel changeover means 4 and respective water channels 5, 6, 7, 8, 9, 10, 11. By changing over the respective water channel changeover means 3, 4, either one of the water channel passing through the purifying means 1 and the filter means 2, the water channel passing only through the purifying means 1 and the water channel allowing water to reversely flow through the filter means 2 to wash the filter means is selected. The changeover of the respective water channels is performed by a control means 20 but, especially, the water channel allowing water to reversely flow through the filter means 2 can be automatically changed over on the basis of the detection data of a flowmeter 42 and a pressure gauge 43. By providing the electrolytic cell 50 communicating with the drain channel 9, an electrolyzed water making apparatus equipped with the abovementioned effect can be constituted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention comprises a purifying means and a filtering means for switching a water channel between these two means,
The present invention also relates to a purified water filter devised for cleaning the filtering means by switching water channels, and an electrolyzed water generator using the purified water filter.

[0002]

2. Description of the Related Art Conventionally, an activated carbon layer that adsorbs residual chlorine and a hollow fiber membrane layer that removes turbid components such as iron rust and general bacteria have been used together to purify tap water (so-called source water) and filter it. A clean water filter that does is generally known.

In this type of water filter, an activated carbon layer and a hollow fiber membrane layer are mainly formed in a cartridge, and the activated carbon is usually provided in the lower part, which is the water supply side inside the case body, through which the source water can pass. The layers are placed so that the hollow fiber layer is located on the upper side, which is the drain side. Then, when the adsorption efficiency of the activated carbon layer is reduced by long-term use, or when the hollow fiber membrane layer is clogged and the filtration efficiency is reduced,
The above cartridge was being replaced.

However, in the above-mentioned purified water filter, the activated carbon layer and the hollow fiber membrane layer have different use limit periods (the hollow fiber membrane layer is more likely to be clogged and has a shorter use limit period), and the activated carbon layer and the hollow fiber Since the membrane layer and the membrane layer are integrally formed, if the cartridge is replaced when the hollow fiber membrane layer is clogged, the activated carbon layer that can still be used is also replaced at the same time, resulting in a waste. Further, since the hollow fiber membrane layer can be reused by washing, replacement of the hollow fiber membrane layer wastes resources.

[0005] Therefore, in the recent purified water filter, an activated carbon cartridge having an activated carbon layer and a hollow fiber cartridge having a hollow fiber membrane layer are detachably combined so as to communicate with each other. The activated carbon cartridge is placed on the lower side, which is the water supply side, and the hollow fiber cartridge is placed on the upper side, which is the drainage side, inside the case main body that can pass above. Then, if the adsorption efficiency of the activated carbon layer decreases due to long-term use, the activated carbon cartridge is replaced, and if the hollow fiber membrane layer is clogged and the filtration efficiency decreases, back flow water into the hollow fiber cartridge. Backwash to eliminate clogging.

In particular, with regard to backwashing of conventional hollow fiber cartridges, the following two types of constructions are mainly known. First, the hollow fiber cartridge is attached so that the inflow side and the outflow side can be reversed with respect to the activated carbon cartridge, and the case body is disassembled when backwashing, and the hollow fiber cartridge is reversed, and then the case body is reassembled. There is a configuration in which the source water is caused to flow inside the case body in this state.

Next, a water storage part for storing purified and filtered purified water is formed on the drain side (upper part) of the case body during normal use, and a cylinder part that rises when the purified water is stored inside the water storage part is formed. In addition to being provided, a switching mechanism that is separate from the case body and connects the water supply side and the drain side of the case body to switch running water is provided so that the source water temporarily flows backward when the running water is stopped by manual operation of the switching mechanism. At that time, by pressing the cylinder part from the upper part of the case main body and lowering the cylinder part, the stored purified water is made to flow back inside the case main body, and it is discharged from the case main body by another draining means to reverse the hollow fiber cartridge. There is a structure to wash.

[0008]

However, in the above-mentioned conventional water purifying filter, in the case of the structure in which the hollow fiber cartridge is inverted, the case body is disassembled at the time of backwashing, and at least only the hollow fiber cartridge is inverted. However, there is a problem that these operations are very troublesome. In addition, it was unclear when to backwash this type.

Turbid components such as iron rust and general bacteria adhering to the hollow fiber membrane layer of the hollow fiber cartridge fall off and settle down below due to its own weight. Since the flow is from the lower part (water supply side) to the upper part (drainage side), which is the same as during use, foreign matter that has fallen out and settled must be pushed up to the upper part, so there was also the problem of poor discharge efficiency.

Further, in this structure, when the hollow fiber cartridge is clogged, the water purification filter may be damaged due to an increase in internal water pressure when used as it is. Therefore, the hollow fiber cartridge is backwashed. Until then, there was the annoyance that the use of the purified water filter itself had to be stopped.

On the other hand, in the case of the structure in which backwashing is performed by the stored purified water, the case main body is provided with the water storage section and the cylinder section, and the switching mechanism is provided separately from the case main body, so that the number of parts is large. There is a problem that the configuration becomes complicated. Further, in this case, there is a problem that the purified water stored in the water storage portion is not flowing water but only flows out in the opposite direction in the case main body, which is not sufficient for eliminating the clogging of the hollow fiber cartridge.

Further, in both configurations, the water for backwashing the hollow fiber cartridge must pass through the activated carbon cartridge to purify the disinfecting elements such as chlorine. There is a problem in that the sterilizing effect of the disinfecting element on the hollow fiber membrane layer cannot be obtained only by removing the clogging turbid components such as iron rust and general bacteria.

Further, in both configurations, since the activated carbon cartridge and the hollow fiber cartridge are integrally formed so as to communicate with each other, only two kinds of water, that is, purified and filtered running water and source water can be obtained, and However, since the purified and filtered running water is obtained only in a small amount in order to pass through each cartridge, there is a problem that only the source water is used to desire a large amount of running water at one time.

Therefore, in order to solve the above-mentioned problems, the present invention makes it possible to use a combination of purification and filtration with a simple structure, or to use running water only for purification, and to backwash the filtration side efficiently and easily. It is an object of the present invention to provide a purified water filter that can be used in any of the above, and an electrolyzed water generating apparatus using the purified water filter.

[0015]

In order to achieve the above object, the purified water filter according to the present invention comprises a purification means 1 for purifying the running water supplied from the water conduit 6 and sending it out from the purified water passage 7, and the purified water passage 7. A filtering means 2 that communicates with the purifying means 1 via the purifying means 1 and filters the flowing water supplied from the purifying water channel 7 and sends out from the filtering water channel 8, a branch water channel 11 branched from the purifying water channel 7, and the filtering water channel 8. Is provided between the purifying water passage 7 and the filtration water passage 8 and is selectively switched to the purifying water passage 7 or the filtration water passage 8, and the flowing water sent from the purifying means 1 or the filtering means 2 is supplied.
Is provided between the drainage side waterway switching means 4 for draining the running water sent out from the single drainageway 9 and the waterway 10 communicating with the filtration waterway 8 and the waterway 6, and the waterway 6 or The water supply side water channel switching means 3 for selectively switching to the water channel 10 and sending the source water supplied from the water channel 5 to the water guide channel 6 or the water channel 10 is provided.

Further, the filtering means 2 has a casing 2c for introducing running water from the lower side and discharging it from the upper side, and is provided with the hollow fiber membrane layer 2d therein as a filter medium, and the hollow fiber membrane layer 2d is provided with the hollow fiber membrane layer 2d. It is preferable that the base end is fixed to the outlet side of the casing 2c, and the tip of the hollow fiber membrane layer 2d faces the inlet side of the casing 2c.

In addition to the above structure, the water supply side water channel switching means 3 and the drain side water channel switching means 4 are controlled to be switched based on the integrated flow rate of the filtration water channel 8 and / or the water pressure applied to the filtering means 2, and the water supply channel. It is effective to provide a control means 20 for causing the source water supplied from No. 5 to flow back into the casing 2c of the filtration means 2 via the water passage 10 and the filtration water passage 8.

Further, in addition to the above construction, an electrolytic cell 50 in which each electrode is partitioned into a pair of electrode chambers by a diaphragm for electrolysis.
The water supply part 51 on one side of the electrolytic cell 50 communicates with the drainage channel 9, and the running water supplied from the water supply part 51 via the drainage channel 9 is applied with a DC voltage between the electrodes. Alternatively, the alkaline water and the acidic water may be separately drained from the drainage section 52 on the other side.

[0019]

Function: The running water supplied by the water supply channel 5 is used to purify and filter the source water by using the purifying means 1 and the filtering means 2 in combination by switching the water supply side water channel switching means 3 and the drain side water channel switching means 4. And a water channel that only passes through the purifying means 1 and performs only purifying, and the hollow fiber membrane layer 2d in the filtering means 2 by backflowing the source water to the filtering means 2 (so-called backwashing).
One of the water channel for performing the above and the water channel for discharging the source water as it is is selected and drained from the drainage channel.

The running water guided to the filtering means 2 is supplied to the casing 2 when the purifying and filtering water channels are selected.
It is introduced from the lower side of c and guided from the upper side, and is filtered from the tip of the hollow fiber membrane layer 2d through the base end of the hollow fiber membrane layer 2d. When the backwash water channel is selected, it is introduced from the upper side of the casing 2c and led out from the lower side,
The hollow fiber membrane layer 2d is washed from the base end of the hollow fiber membrane layer 2d through the tip of the hollow fiber membrane layer 2d, and the casing 2c is also used.
Efficiently remove foreign matter inside.

Further, the control means 20 determines switching of the water supply side water channel switching means 3 and the drain side water channel switching means 4 based on the integrated flow rate of the filtration water channel 8 and / or the water pressure applied to the filtration means 2, and the water supply channel 5 The source water supplied by the backflow is made to flow back into the casing 2c of the filtering means 2 via the water passage 10 and the filtration water passage 8.

The purified and / or filtered running water is guided from the drainage channel 9 to the electrolytic cell 50 via the water supply section 51, electrolyzed into alkaline water or acidic water, and drained separately from the drainage section 52. Further, switching of the water channels for purification, filtration and backwash, and control for electrolyzing these are performed by the control means 20.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a schematic view showing an embodiment of the purified water filter according to the present invention. As shown in FIG. 1, the purified water filter of this embodiment includes a purifying means 1 and a filtering means 2, and a water supply side water channel switching means 3 and a drain side water channel switching means 4 for switching flowing water to the purifying means 1 and the filtering means 2. And have.

The purifying means 1 is an inlet 1 provided on the lower side.
Inside the casing 1c having a and the outlet 1b provided on the upper side, an activated carbon layer 1d is provided so as to partition the inlet 1a and the outlet 1b.
The residual chlorine and anaerobic odor components in the running water are removed by taking in from a and discharging from the outlet 1b. Further, the casing 1c is made into a cartridge, and is configured to be detachable from a water channel described later.

Like the purification means 1, the filtering means 2 has a casing 2c having an inlet 2a provided on the lower side and an outlet 2b provided on the upper side, and inside the casing 2c. The hollow fiber membrane layer 2d is provided so as to partition the inlet 2a and the outlet 2b. Further, the casing 2c is made into a cartridge, and is configured to be detachable from a water channel described later.

The hollow fiber membrane layer 2d is formed by bending a plurality of hollow fibers having innumerable fine holes on the wall surface at a substantially central portion and converging the end portions, and the converged portion is fixed by the fixing portion 2e to the casing. It is fixed to the outlet 2b side (upper side) in 2c. Then, the running water is taken in through the inlet 2a and the outlet 2
By discharging from b, fine particles in the flowing water, microorganisms such as null and mold, and turbidity such as iron rust are removed.

The water supply side water channel switching means 3 is a valve mechanism for switching the direction of flowing water and has one inlet 3a and one and the other outlets 3b, 3c. Then, the tap water (running water) supplied from the inlet 3a is selectively switched and sent out from one outlet 3b (upper side in the figure) or the other outlet 3c (lower side in the figure).

The drainage-side waterway switching means 4 is a valve mechanism for switching the direction of flowing water similarly to the water-supplying-side waterway switching means 3, and has one and the other inlets 4a and 4b and one outlet 4c. ing. Then, the flowing water is selectively switched to be supplied from one inlet 4a (lower side in the figure) or the other inlet 4b (upper side in the figure) and sent out from the outlet 4c.

The purifying means 1, the filtering means 2, the water supply side water channel switching means 3 and the drain side water channel switching means 4 are communicated with each other through the respective water channels described below.

At the inlet 3a of the water supply side water channel switching means 3,
A water supply channel 5 is provided which communicates with the main tap side of the source water (running water) such as tap water and supplies the running water to the water supply side water channel switching means 3. Further, one outlet port 3b of the water supply side water channel switching means 3
Between the (upper side in the figure) and the introduction port 1a of the purifying means 1, the water supply side water channel switching means 3 and the purifying means 1 are communicated with each other, and the flowing water is supplied from the water supply side water channel switching means 3 to the purifying means 1. Waterway 6
Is provided.

A purifying water channel that connects the purifying means 1 and the filtering means 2 between the outlet 1b of the purifying means 1 and the inlet 2a of the filtering means 2 and supplies running water from the purifying means 1 to the filtering means 2. 7 is provided.

Between the outlet 2b of the filtering means 2 and one inlet 4a (lower side in the figure) of the drain side water channel switching means 4, the filtering means 2 and the drain side water channel switching means 4 are communicated with each other. A filtering water channel 8 for supplying running water from the filtering means 2 to the drain side water channel switching means 4 is provided. Further, the outlet 4c of the drain side water channel switching means 4 is provided with a drain channel 9 for discharging running water.

The other outlet 3c of the water supply side water channel switching means 3
(On the lower side in the figure), it joins the above-mentioned filtered water channel 8 to communicate the water supply side water channel switching means 3 and the filtering means 2, and causes the flowing water to flow backward from the water supply side water channel switching means 3 through the filtered water channel 8. There is provided a water passage 10 that supplies water to the outlet 2b side of the filtering means 2.

The other inlet 4b of the drain side water channel switching means 4
A branch water channel 1 that branches from the above-described purification water channel 7 to communicate the purification means 1 and the drain side water channel switching means 4 and supplies the running water of the purification water channel 7 to the drain side water channel switching means 4 (upper side in the figure).
1 is provided.

Hereinafter, the operation of changing the water passage through which running water passes by selectively switching the water supply side water passage switching means 3 and the drainage side water passage switching means 4 of the purified water filter having the above-described structure will be described with reference to FIGS.
Will be described with reference to. First, as shown in FIG. 1, one outlet port 3b of the water supply side water channel switching means 3 is opened and the other outlet port 3c is closed, and one inlet port 4a of the drain side water channel switching means 4 is opened. When the other inlet 4b is closed, the running water supplied from the water supply passage 5 to the water supply side water passage switching means 3 is supplied from the one outlet 3b to the purification means 1 through the water guide passage 6. Then, the flowing water purified by the purifying means 1 is supplied to the filtering means 2 via the purifying water channel 7, is filtered by the filtering means 2, and is introduced into one of the drain side water channel switching means 4 via the filtering water channel 8. It is supplied to the drainage side waterway switching means 4 from the mouth 4a and sent to the drainage path 9.

Next, as shown in FIG. 2, one outlet port 3b of the water supply side water channel switching means 3 is opened and the other outlet port 3c is opened.
And closing the one inlet 4a by opening the other inlet 4b of the drainage-side waterway switching means 4,
The running water supplied from the water supply passage 5 to the water supply side water passage switching means 3 is purified by the purifying means 1 from the one outlet 3b through the water guide passage 6.
Is supplied to. Then, the running water purified by the purifying means 1 is supplied from the purifying water channel 7 through the branch water channel 11 to the drain side water channel switching means 4 from the other inlet 4b of the drain side water channel switching means 4 to the drain channel 9. Sent out.

Next, as shown in FIG. 3, the other outlet port 3c of the water supply side water channel switching means 3 is opened and one outlet port 3b is opened.
And closing the one inlet 4a by opening the other inlet 4b of the drainage-side waterway switching means 4,
The running water supplied from the water supply passage 5 to the water supply side water passage switching means 3 flows backward through the filtered water passage 8 from the other outlet 3c through the water passage 10 and is supplied into the filtering means 2 from the outlet 2b of the filtering means 2. To be done. Then, it is supplied to the drainage side waterway switching means 4 from the purification waterway 7 through the branch waterway 11 through the other inlet 4b of the drainage side waterway switching means 4 and is sent to the drainage path 9.

Next, as shown in FIG. 4, the other outlet 3c of the water supply side water channel switching means 3 is opened and the one outlet 3b is opened.
When the inlet 4a of the drain side water channel switching means 4 is opened and the other inlet 4b is closed,
The flowing water supplied from the water supply passage 5 to the water supply side water passage switching means 3 is provided with the water passage 10 and the filtered water passage 8 from the other outlet 3c.
One of the inlets 4 of the drainage side waterway switching means 4 through a part of the
It is supplied to the drain side water channel switching means 4 from a and sent to the drain channel 9.

That is, in the purified water filter according to this embodiment, the water supply side water channel switching means 3 and the drain side water channel switching means 4 are provided.
By selectively switching the purifying means 1 and the filtering means 2 together to purify and filter the source water, the water passage through which only the purifying means 1 is passed to purify the source water, and the filtering means 2 is provided with the source water. The hollow fiber membrane layer 2d in the filtering means 2 is made to flow back.
It is equipped with a water channel for washing (so-called backwashing) and a water channel for discharging the source water as it is.

By the way, the above-mentioned water supply side water channel switching means 3
The drainage-side water passage switching means 4 may be either a manual type or an electric type valve mechanism, but is preferably an electric valve such as a motor valve or a solenoid valve, and is used for switching to each of the above-mentioned water passages. Are configured to work together.

In the water purifier in which the valve mechanism of the water supply side water channel switching means 3 and the drainage side water channel switching means 4 is constituted by an electrically operated valve, the water purification side water channel switching means has a control means 20 as shown in FIG. 3 and the drain side water channel switching means 4 are electrically connected (A), and switching to each water channel can be electrically operated.

The control means 20 is equipped with a switch panel 30 for switching each water channel by artificial selection. The switch panel 30 is provided with respective switches of a purified water filtration switch 31, a purified water switch 32, a backwash switch 33, a source water switch 34 and a stop switch 35 corresponding to each of the water channels that can be selected.

The water supply passage 5 provided in the water supply side water passage switching means 3 is provided with an opening / closing type electric valve 41 electrically connected to the control means 20 (B). Open-close type motor operated valve 4
In accordance with the switching of the water supply side water channel switching means 3 and the drain side water channel switching means 4, 1 stops or discharges the running water obtained from the opened main plug.

When any one of the water purification filter 31, the water purification switch 32, the backwash switch 33, and the source water switch 34 is selected from among the switches, a signal is output to the control means 20 to open / close the motor-operated valve. 41 is set to the water discharge state, and the water supply side water channel switching means 3 and the drain side water channel switching means 4 are switched to the water channels corresponding to the selected switches. Further, when the stop switch 35 is selected, the open / close type electric valve 41 is brought into the water-stopped state, and the use of the purified water filter is stopped.

Further, when the water purification filter switch 31, the water purification switch 32, the backwash switch 33, the source water switch 34 and the stop switch 35 are selected and the water channel is switched, switching is performed by a display means (not shown). The state is displayed so that the state of the water channel can be recognized.

Here, as shown in FIG. 5, the filtered water channel 8 is provided with a flow meter 42 electrically connected to the control means 20 (C). In addition, the pressure gauge 4 electrically connected to the control means 20 is provided in the purified water channel 7 immediately before the filtering means 2.
3 is provided (C '). And the flow meter 42
The integrated flow rate of the running water filtered by the filtering means 2 is detected, the pressure gauge 43 detects the pressure applied to the filtering means 2, and outputs a detection signal to the control means 20, respectively.

Further, the control means 20 stores preset setting data of the integrated flow rate or pressure,
Based on the detection data detected by the flow meter 42 and / or the pressure gauge 43 and the setting data, it is compared whether the detection data is above the setting or below the setting.

That is, in the control means 20, the flow meter 42
If the detection data of is greater than or equal to the set value, it can be determined that the amount of use of the hollow fiber membrane layer 2d of the filtering unit 2 that may cause clogging has passed. It can be determined that the thread film layer 2d is clogged.

Then, according to the above judgment of the control means 20, the backwash can be performed automatically or manually. First, when backwashing is automatically performed, when each detection data is equal to or more than the set value, the control means 20 outputs a switching signal to the water supply side water channel switching means 3 and the drain side water channel switching means 4 to switch to the backwashing water channel.

The control means 20 stores data of preset backwashing time for backwashing the filtering means 2, and the backwashing is carried out after the set time has elapsed from the time when the backwash water channel was switched. To stop. Also, after backwash is stopped,
A desired water channel (for example, a water channel for purified water filtration) is restored, or the openable motor-operated valve 41 of the water supply channel 5 is stopped to stop the use of the purified water filter.

It should be noted that when the control means 20 has passed a usage amount that would cause clogging of the hollow fiber membrane layer 2d of the filtration means 2,
Alternatively, if it is determined that the channel is only for purification when it is determined that a clog has occurred, it can be automatically switched to the channel for purification only without backwashing, so continue to use it during use. For purification only, running water can be used.

Further, the control means 20 is provided with a clock function, so that the backwash time can be set at a time when the purified water filter is not used (for example, when it is closed for business use), and the backwash time can be set at the set time. When this happens, the open / close type electric valve 41 of the water supply passage 5 can be automatically put into a water discharge state for backwashing.

Next, when backwashing is manually performed, when the respective detection data are equal to or more than the set values, a warning means (not shown) such as a lamp or a buzzer warns the backwashing time.

When there is a warning of the backwashing time, the stop switch 35 is selected to artificially stop the use of running water, and then the backwashing switch 33 is selected to carry out the backwashing, or the water purification switch 32. Select to switch to the water channel for purification only and continue to use the purified water.

By the way, as another embodiment, as shown in FIG. 6, by connecting the electrolytic cell 50 to the drainage channel 9,
It can be used as an electrolyzed water generator having the above-mentioned purified water filter. The electrolytic cell 50 is divided into a pair of electrode chambers by a diaphragm for electrolysis between the positive electrode and the negative electrode. A water supply unit 51 for supplying running water from the drainage channel 9 is provided in one side of the electrolytic cell, and alkaline water and acidic water electrolyzed by applying a DC voltage between the electrodes are provided in the other side. A pair of drainage parts 52 for separately draining and from the electrode chambers are provided.

Further, as shown in FIG. 6, each electrode is electrically connected to the control means 20 to control ON / OFF of the DC voltage between the electrodes (D).

The control means 20 is equipped with a switch panel 60 for switching each water channel by artificial selection. On the switch panel 60, in addition to the purified water filtration switch 61, the purified water switch 62, the backwash switch 63 and the stop switch 64 corresponding to each of the water channels that can be selected, a reverse power switch 65 corresponding to the reverse power supply of the electrolytic cell to be described later. Each switch is provided.

Then, when one of the water purification filter 61 and the water purification switch 62 is selected from among the switches, a signal is output to the control means 20 to open and close the electrically operated valve 41.
From the running water obtained by applying a DC voltage between the electrodes of the electrolytic cell 50 while switching the water supply side water channel switching means 3 and the drain side water channel switching means 4 to a water channel corresponding to the selected switch. Generates electrolyzed water.

When the backwash switch 63 is selected, the open / close type electric valve 41 is set to the water discharge state, and the water supply side water channel switching means 3 and the drain side water channel switching means 4 are switched to the backwashing water channel. The DC voltage between the electrodes of 50 is turned off.

When the stop switch 64 is selected, the open / close type motor operated valve 41 is stopped and the electrolytic cell 50 is stopped.
The use of the electrolyzed water generator is stopped by turning off the DC voltage between the electrodes.

Further, when the reverse charge switch 65 is selected, the DC voltage between the electrodes of the electrolytic cell 50 is reversed to remove the calcium adhering to the periphery of the negative electrode side. Also,
In the middle of the drainage part 52, a pair of drainage parts 5 are interlocked with the reverse electric power.
A flow path switching valve 52a for reversing the flowing water of No. 2 is provided, and the polarity of each electrode is reversed at the time of reverse charging, and the alkaline water discharged from the drainage unit 52 opposite to that in normal use is provided. By draining acidic water from the same drainage section 52 as in normal use by switching the flow path switching valve 52a, each electrolyzed water is continuously used through the same drainage section 52 as in normal use. be able to. In addition, the water channel used for reverse power supply is either a water channel for purification and filtration, or a water channel for purification only, and the state of the switched water channel and the reverse power state are recognized by a display means (not shown). The status is displayed so that you can do it.

This electrolyzed water producing apparatus compares the detection data detected by the flow meter 42 and / or the pressure gauge 43 by the control means 20 with the setting data, like the above-mentioned purified water filter. Then, it is determined that the amount of detection data of the flowmeter 42 is equal to or more than the setting, and the amount of use that can cause clogging of the hollow fiber membrane layer 2d has passed. Is determined to have occurred.

When automatic backwashing is performed based on this determination, the control means 20 outputs a switching signal to the water supply side waterway switching means 3 and the drainage side waterway switching means 4 to switch to the backwashing waterway, and at the same time, the electrolytic bath 50 The DC voltage applied between the electrodes is turned off.

Further, when it is desired to continue to use the electrolyzed water, the purification is performed when the amount of the hollow fiber membrane layer 2d of the filtering means 2 that can cause clogging has passed or when it is determined that clogging has occurred. By setting the control means 20 so that it becomes a water channel only, the electrolyzed water can be continuously used.

Further, in the case of manually performing backwashing by the same judgment, based on the comparison between the detection data and the setting data, when the detection data is above the setting, for example, a notification means (not shown) by a lamp or a buzzer To warn you when to backwash.

When there is a warning of the backwash time,
Select the stop switch 64 to artificially stop the use of electrolyzed water and then select the backwash switch 63 to perform backwashing, or select the clean water switch 64 to switch to the water passage for purification only and continue to electrolyze water. To use.

Further, by setting the control means 20, the open / close type electric valve 41 of the water supply passage 5 is automatically set to the water discharge state at the time when the electrolyzed water generator is not used (for example, when it is closed for business use), and It is also possible to switch to the water channel for backwashing to carry out backwashing on the side of the purified water filter and at the same time perform backcharging on the side of the electrolytic layer.

Further, in this electrolyzed water producing apparatus, the hypochlorous acid generating electrode 53 is arranged in the purified water passage 7 immediately after the purifying means 1, and, for example, after switching the switching valve 52a of the drainage section 52, or for a predetermined time. When not used, it can be washed with water while generating hypochlorous acid. In addition,
Since calcium adheres to the hypochlorous acid generating electrode 53, the voltage applied periodically is used by switching.

An adjusting valve (not shown) for adjusting the flow rate ratio between the alkaline water and the acidic water may be provided after the switching valve 52a provided in the drain section 52. The flow rate ratio with acidic water can be set to 2: 1 or the like. Further, an orifice (not shown) is provided on the acidic water side after the adjusting valve to reduce the flow rate of the acidic water, and for example, the flow rate ratio of alkaline water to acidic water is 5:
It can be changed to 1 etc.

Further, when the purifying and filtering water channels are used during normal use, the amount of water flow is reduced by the hollow fiber. Therefore, a large amount of water can be selected by operating the switch panel 60 to select only the purifying channel. It is possible to use electrolyzed water.

Therefore, the purified water filter thus constructed is provided with the individual water purification means 1 and the filtration means 2, which are connected to each other through the water channels, and the water supply side water channel switching means 3 and the drain side water channel switching. By making it switchable by the means 4, the water channel for purifying and filtering the source water by using the purifying means 1 and the filtering means 2 in combination by selectively switching the water supply side water channel switching means 3 and the drain side water channel switching means 4. And a channel for passing only the purifying means 1 to perform only purification, a channel for backwashing the source water to the filtering means 2 to backwash the hollow fiber membrane layer 2d in the filtering means 2, and the source water is discharged as it is. You can get any one with a waterway.

Further, the filtering means 2 has a casing 2c capable of passing the running water from the lower inlet 2a to the upper outlet 2b in a normal state, and the converging portion of the hollow fiber membrane layer 2d in the casing 2c is provided. The fixed portion 2e provided at the outlet 2b on the upper side of the casing 2c fixes the flowing water from the upper side to the lower side during backwashing. Microorganisms such as fine particles, nulls and molds, and turbidity such as iron rust can be efficiently removed by running backflowing water.

The switchable backwash water channel is constructed so as to guide the source water into the filtering means 2, and the hollow fiber membrane layer 2d can be washed with running water containing a disinfectant such as chlorine. Not only can the hollow fiber membrane layer 2d be washed, but the hollow fiber membrane layer 2d can be sterilized.

Then, the hollow fiber membrane layer 2 of the filtration means 2 is detected from the detection data of the flow meter 42 and / or the pressure gauge 43.
It is determined when d has exceeded the usage amount that can cause clogging or when clogging has occurred, and the water supply side water channel switching means 3 and the drain side water channel switching means 4 which are electric valves are determined.
Since the control means 20 for automatically operating the
It is possible to prevent the filtration means 2 from being damaged and to automatically and efficiently backwash the filtration means 2.

Further, according to the control means 20 described above, it is possible to artificially switch the water channel by selecting each switch and to give a notification at the time of backwashing. In addition, the filtering means 2 is clogged by a desired setting. In this case, it is possible to switch to the water channel only for clean water and to carry out regular backwash when not in use.

Further, in addition to the purified water filter having the above-mentioned structure, the electrolytic layer 50 for electrolyzing the purified water-filtered running water to generate alkaline water and acidic water is disposed after the drainage channel 9, so that the above-mentioned effects can be obtained. It is possible to obtain an electrolyzed water generator having

[0077]

As described above, the water purifying filter according to the present invention comprises the individual water purifying means and the filtering means, which are connected to each other by the water channels, and the water supply side water channel switching means and the drain side water channel switching means. With the simple structure, the water channel for purifying and filtering the source water by using the purifying means and the filtering means together, the water channel for passing only the purifying means and performing only the purification, and the filtering means. It is possible to obtain any one of the water channels in which the source water is made to flow back to backwash the hollow fiber membrane layer in the filtration means.

Further, the filtering means has a casing which introduces flowing water from the lower side and discharges it from the upper side, and the base end of the hollow fiber membrane layer disposed inside is fixed to the outlet side of the casing, The above-mentioned water channel was used to reverse the flowing water from the upper side to the lower side during backwashing. It can be removed efficiently with running water. Further, in the backwash water channel, the source water is introduced into the filtering means, and the hollow fiber membrane layer can be washed with running water containing a disinfectant such as chlorine. The hollow fiber membrane layer can be sterilized.

In the purified water filter having each water channel having the above-mentioned configuration, the state of the filtering means is judged based on the integrated flow rate of the filtering water channel and / or the water pressure applied to the filtering means, and the water supply side water channel switching means and the drain side water channel are determined. Since the control means for automatically switching the switching means to control the backwash water channel is provided, damage to the filtering means can be prevented and the backwashing of the filtering means can be performed automatically and efficiently.

Further, in addition to the purified water filter having the above-mentioned structure, an electrolytic layer for electrolyzing purified and / or filtered running water to generate alkaline water and acidic water is disposed after the drainage channel, so that a high-quality alkaline can be obtained. It is possible to obtain an electrolyzed water producing apparatus which has the effects of the above-described purified water filter, such as water and acid water being obtained and automatic backwashing of the filtering means, and the like.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of a purified water filter according to the present invention.

FIG. 2 is an operation diagram showing a water channel change of the purified water filter.

FIG. 3 is an operation diagram showing a water channel change of the purified water filter.

FIG. 4 is an operation diagram showing a water channel change of the purified water filter.

FIG. 5 is a schematic block diagram showing water channel control of the purified water filter.

FIG. 6 is a schematic view showing an example of an electrolyzed water generator using the purified water filter.

[Explanation of symbols]

1 ... Purifying means, 2 ... Filtering means, 2c ... Casing, 2d
... Hollow fiber membrane layer, 3 ... Water supply side water channel switching means, 4 ... Drain side water channel switching means, 5 ... Water supply channel, 6 ... Water channel, 7 ... Purification channel,
8 ... Filtered water channel, 9 ... Drainage channel, 10 ... Water channel, 11 ... Branch channel, 20 ... Control means, 50 ... Electrolyzer, 51 ... Water supply section,
52 ... Drainage section.

Claims (4)

[Claims] 1. A purifying means (1) for purifying running water supplied from a water conduit (6) and sending it out from a purifying water channel (7), and the purifying means communicating with the purifying means via the purifying water channel. The filtering means (2) for filtering the flowing water supplied from the filtration channel (8) and the branching channel (11) branched from the purification channel and the filtration channel, and the purification channel or Drainage side waterway switching means (4) for selectively switching to the filtration waterway to drain the runningwater sent out from the purification means or the runningwater sent out from the filtering means from a single drainage path (9); It is provided between the water conduit (10) communicating with the water conduit and the water conduit, and selectively switches to the water conduit or the water conduit to supply the source water supplied from the water conduit (5) to the water conduit or the water conduit. Water supply side water channel switching means ( 3)
And a purified water filter. 2. The filtering means (2) has a casing (2c) which introduces flowing water from the lower side and discharges it from the upper side, and has a hollow fiber membrane layer (2d) as a filter medium therein, and The purified water filter according to claim 1, wherein a base end of the hollow fiber membrane layer is fixed to a lead-out side of the casing, and a tip end of the hollow fiber membrane layer is arranged to face an inlet side of the casing. 3. The integrated flow rate of the filtration channel (8) and / or
Alternatively, the water supply side water channel switching means (3) and the drain side water channel switching means (4) are switched and controlled on the basis of the water pressure applied to the filtering means (2), and the source water supplied from the water supply channel (5) is The purified water filter according to claim 1 or 2, further comprising a control means (20) for causing a reverse flow into the casing (2c) of the filtration means via the water passage (10) and the filtration water passage (8). 4. An electrolytic cell (50) partitioned between the electrodes by a diaphragm for electrolysis into a pair of electrode chambers, wherein a water supply part (51) on one side of the electrolytic cell communicates with the drainage channel (9). At the same time, the running water supplied from the water supply unit via the drainage channel is electrolyzed by applying a DC voltage between the electrodes, and the alkaline water and the acidic water are separately supplied from the drainage unit (52) on the other side. It drains, The electrolyzed water generator of any one of Claims 1-3 characterized by the above-mentioned.