JPH0810766A - Electrolytic water forming device with backwashing mechanism - Google Patents

Abstract

PURPOSE:To prevent run-off of backwashing water by providing a branch pipe branched from near a leading out port which discharges water discharged from an anode chamber with a float valve. CONSTITUTION:The backwashing by impression of voltage by positive and negative reversing of a prescribed time electrode is started when the inflow of raw water is stopped by a valve 1. At this time, an electrically driven stop valve 8 on the inflow side of an electrolytic cell is closed. Simultaneously, the atm. air flows in from the float valve 20 near the leading out port of the anode chamber. A diaphragm 9 allows slight passage of the air and, therefore, the outflow of water in the electrolytic cell 5 is prevented by the effect of siphon even if the end of the discharge pipe flowing into the upper part of a cathode chamber 19 via the diaphragm 9 exists in a position lower than the bottom of the electrolytic cell when the air flows into the upper part of the anode chamber 18. The backwashing is thus sufficiently executed in the state that water stagnates nearly up to the upper part of the electrolytic cell.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolyzed water producing apparatus of the original type which is used by connecting it to a tap water faucet or the like. More specifically, the voltage applied to the positive and negative electrodes of the electrolytic cell is The present invention relates to an electrolyzed water generator with a reverse washing device.

[0002]

2. Description of the Related Art In this kind of electrolyzed water producing apparatus, as shown in FIG. 3, in order to produce electrolyzed water, raw water which has passed through a valve 1 for intermittently supplying water such as tap water is controlled to supply and drain the raw water. An electrolytic cell in which raw water is sealed via a water purifier 3 for removing raw water pollutants from a manifold 24 and an auxiliary agent adder 4 for branching a part of the raw water that has passed through the water purifier 3 to add an electrolysis accelerator. Water is supplied to the tube mouth portion 25 of No. 5, and a means for varying the voltage applied to the electrode of the electrolytic cell and a mechanism for reversing the polarity are energized between the negative and positive electrodes separated via the ion-permeable diaphragm 9 in the electrolytic cell. Electrolysis is performed to generate cathodic water on the cathode side and anodic water on the anode side by electrolysis and permeation of water. The water is discharged from the end 7 of the water discharge pipe.
On the other hand, the undesired water produced by the desired anodized water is drained from the pipe 15 through the manifold 24 as drainage.

However, when such electrolyzed water is continuously produced and used, water-insoluble components such as metal carbonates and hydroxides produced by continuous electrolysis for a long time are cathodic and ion-permeable. It adheres, grows and deposits on the diaphragm.
When the scale adheres to and deposits on the surface of the cathode or the ion-permeable membrane in this way, the current flow is interrupted and the electrolysis capability gradually decreases. Therefore, continuous operation of the electrolyzed water generator becomes difficult.

In order to remove the scale attached to the cathode or the ion-permeable diaphragm by this electrolysis, the polarity of the DC voltage applied to the electrode is reversed to electrolyze, and the reversal of the conduction polarity causes the electrode to The attached scale begins to elute. Utilizing this principle, for example, so-called backwashing is performed, in which the cathode, the diaphragm, etc. are washed by reversing the polarity of electricity and electrolyzing during the period in which water discharge outside the device is stopped.

At the time of backwashing, the valve 28 is not completely closed in the conventional apparatus shown in Japanese Utility Model Publication No. 3-123595, so that the water retained in the cathode chamber of the electrolytic cell during the reverse electrolysis which starts when the water supply is stopped. Will gradually flow out from the pipe opening 25 at the bottom of the electrolytic cell, and the water level in the electrolytic cell will gradually decrease. At the upper part of the electrode, since the accumulated water level is lowered with the stop of the water supply, the adhered deposits cannot be sufficiently removed, and the backwash cannot be sufficiently performed during the retention time.

In order to perform sufficient backwashing, it is necessary to completely retain the water in the electrolytic cell during the electrolysis by reversing the current polarity. For this purpose, the raw water from the valve 1 to the electrolytic cell is retained. It is necessary to keep the flow pipe 10, the water purifier 3, the auxiliary agent adder 4, and the electrolytic cell 5 in a closed space. That is, the valve 28 is constituted by a valve such as an electric opening / closing valve that can completely block running water, and at the same time the valve is completely closed, the water purifier 3, the auxiliary agent adder 4, the raw water distribution pipe 10 and the pipe port of the electrolytic cell. Prevent the water in the electrolytic cell from leaking out from the portion 25. In this way, retention of raw water in the electrolytic cell is ensured and sufficient backwashing is performed. On the other hand, drainage after backwashing is naturally discharged and drained by opening the valve 28.

FIG. 4 shows an example in which such an electrolyzed water producing apparatus is installed near the sink 23. Discharge pipe end 7
Is sometimes lower than the bottom surface 14 of the electrolytic cell 5 as shown in FIG. When the valve 28 is used in such a state and the valve 28 is closed as it is for backwashing, the raw water flow pipe and the like are in a closed space state, so that the water in the electrolytic cell 5 is affected by the siphon. There is a possibility that the water will flow out from the end 7 of the water discharge pipe, and when the negative and positive voltages are reversed and a voltage is applied to the negative and anode for backwashing, the water in the electrolytic cell may have already flowed out and electrolysis may not be possible. Even if the water discharge pipe end 7 is not lower than the bottom surface of the electrolysis tank 5, the raw water flow pipe and the inside of the electrolysis tank are in a closed space state, so that the same water level as that of the water discharge pipe end 7 is present in the electrolysis tank 5. Water may flow out from the water discharge pipe end 7 due to the action of the siphon. Also in this case, sufficient backwash cannot be performed because the amount of water in the electrolytic cell is small.

[0008]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in an original-electrolysis-type electrolyzed water generator, even if the raw water flow path of the electrolyzer is blocked by a valve or the like during backwashing, the water in the electrolyzer is siphoned. In order to provide a device that prevents the water in the electrolytic cell from flowing out of the electrolytic cell due to the action of a siphon, by providing a valve near the outlet that discharges the discharge of the anode water of the electrolytic cell so that it does not flow out by the action. is there.

[0009]

Therefore, the electrolyzed water producing apparatus with a backwash mechanism of the present invention is divided by an ion-permeable diaphragm,
A DC voltage is applied between the cathode and cathode chambers with the negative electrode and the anode chamber with the positive electrode inserted to electrolyze the raw water supplied to discharge the cathode water from the discharge pipe and discharge the anode water from the outlet. ,
When backwashing, the voltage applied to the Yin and Yang electrodes is reversed,
To prevent the raw water in the electrolysis tank from flowing back to the drainage route through the raw water flow pipe by closing the electric on-off valve on the inflow side of the electrolysis cell, the raw water flowing into the electrolysis cell is controlled at the stage before the inflow of the electrolysis cell. In the former-type electrolyzed water generating device, a float valve was attached to a branch pipe branched from the vicinity of the outlet for discharging the discharge water of the anode chamber so as to be able to contact with the atmosphere.

The gist is that the float valve is provided with an adjusting member for controlling the air flow.

[0011]

According to the present invention, even if the discharge of water from the device is stopped and the raw water flow path of the electrolytic cell is blocked due to backwashing or the like, the atmosphere flows in from the float valve or the like, so that the water in the electrolytic cell acts as a siphon. Therefore, backwashing can be performed with water sufficiently retained in the electrolytic cell. Therefore, it is possible to sufficiently perform backwashing up to the upper part of the electrolytic cell.

[0012]

1 is a block diagram of the present invention corresponding to FIG. Members having the same functions and mechanisms as those in FIGS. 3 and 4 are denoted by the same reference numerals.

In FIG. 1, in the case of the formed water, the raw water, the inflow of which is controlled by the valve 1, passes through the flow meter 16, and then the water purifier 3, the auxiliary agent adder 4, and the backwash block 2 through the backwash block 2.
It flows from the lower part of the electrolytic cell 5 through the raw water flow pipe 10. At this time, the electrically operated on-off valve 8 is closed, and the above devices and the raw water flow pipe 10 form a closed flow path. The electrolytic cell 5 is divided by the ion-permeable diaphragm 9, and a DC voltage is applied from a power source (not shown) between the cathode and cathode electrodes 19 with the negative electrode and the anode chamber 18 with the positive electrode to electrolyze the raw water supply. Then, the cathode water is discharged from the water discharge pipe 6, and the anode water is discharged from the outlet 13. A float valve 20 and an adjusting member 22 that regulates the inflow amount of air are attached to a branch pipe 21 near the outlet 13. The anode water discharged from the outlet 13 is discharged through the pipe 15 and used as desired. If not desired, it is drained via the check valve 17. In addition, 11 is a backwash water supply pipe for removing the blockage of the water purifier 3, and when the operation for this purpose is performed, the electric opening / closing valve 8 is opened and the backwash water can be drained.

When the inflow of raw water is stopped by the valve 1 and the water discharge is stopped at the same time when the power is on, backwashing is started by applying a voltage by reversing the polarity of the electrodes for a predetermined time.
When backwashing, the voltage applied to the Yin and Yang electrodes is reversed,
The electric on-off valve 8 on the inflow side of the electrolytic cell is closed. Moreover, since the valve 1 is also closed, there is no risk that the water in the raw water flow pipe 10 and the electrolytic cell 5 will be drained.

At the same time, the float valve 20 near the outlet of the anode chamber
Atmosphere flows in from. Then, the pipe 15 is brought to the same atmospheric pressure as the atmospheric pressure. Therefore, it is possible to prevent the water in the anode chamber of the electrolytic cell 5 from flowing out by the action of the siphon. At the same time, since a small amount of air passes through the diaphragm 9, when the air flows into the upper portion of the anode chamber 18, the air also flows into the upper portion of the cathode chamber 19 through the diaphragm 9, so that the water discharge pipe end 7 is shown in FIG. Even if it is below the bottom of the electrolytic cell, the electrolytic cell 5
The water inside does not entirely flow out due to the action of the siphon, and backwashing is performed with the water remaining almost up to the top of the electrolytic cell.

When the backwashing for a predetermined time is completed and the valve 8 is opened, unnecessary water such as accumulated water in the raw water flow pipe 10 and acid water due to the backwashing of the electrolytic cell 5 is drained through the electrically operated on-off valve 8. .

After waiting for the drainage of this unnecessary water, the valve 8 is closed again, and the valve 1 waits for opening. Then, when the valve 1 is opened, the water purifier 3, the auxiliary agent adder 4, the raw water flow path 16 and the electrolytic tank 5 are waited for electrolysis to start electrolysis.

FIG. 2 is an explanatory view of an adjusting member attached to the float valve. Float valve 20 connected to branch pipe 21
Is a valve for inflowing air, and the inflow of air is promoted by the up and down movement of the float 26 constituting the valve. The float 26 is in the direction of closing the valve body 27 in the state where the anode water is being discharged, but when the vicinity of the outlet 13 becomes a vacuum state, the float 26
Opens the valve body 27. Therefore, air flows in from the adjusting member 22, and the vacuum state near the outlet 13 is released. The adjusting member 22 is a member such as a valve for controlling the inflow of air. Even if there is a difference in the material of the member forming the diaphragm 9 by controlling this member, the air passage amount of the diaphragm 9 is changed to adjust the cathode chamber It prevents the siphon.

[0019]

Even if the end of the discharge pipe is located lower than the bottom of the electrolytic cell, the air flows in from the float valve, so there is no water leakage in the electrolytic cell due to the action of the siphon, and water stays in the upper part of the electrolytic cell. Since the backwash can be performed in this state, the backwash can be sufficiently performed.

By providing the float valve with an adjusting member that regulates the flow rate of air, not only the siphon effect on the anode chamber side but also the siphon effect on the cathode chamber can be controlled.

It is possible to install the electrolyzed water generator at a place where the end of the discharge pipe is lower than the bottom of the electrolyzer.
Therefore, the installation place of the electrolyzed water generator is not limited. Since it is a simple mechanism that an opening is provided in the narrow channel, the whole device can be made compact, and furthermore, inspection and repair can be easily performed in maintenance after installation.

[Brief description of drawings]

FIG. 1 is a configuration diagram of the present invention.

FIG. 2 is an explanatory view of an adjusting member attached to a float valve.

FIG. 3 is an explanatory diagram of a conventional continuous electrolyzed water generator.

FIG. 4 is an explanatory diagram when a conventional electrolyzed water generator is installed near a sink.

[Explanation of symbols]

 5 Electrolyzer 6 Water discharge pipe 8 Electric opening / closing valve 10 Raw water distribution pipe 13 Outlet port 15 Piping 20 Float valve 21 Branch pipe 22 Adjusting member

Claims (2)

[Claims] 1. A cathode is discharged from a water discharge pipe by applying a DC voltage between the cathode and cathode electrodes, which are divided by an ion-permeable diaphragm and have a cathode electrode and an anode chamber in which a cathode electrode is inserted, to electrolyze the raw water supplied. Water is discharged, anode water is discharged from the outlet, and the voltage applied to the positive and negative electrodes is reversed during backwashing, and the electric open / close valve on the inflow side of the electrolytic cell is closed to prevent the raw water in the electrolytic cell from being discharged. A discharge port that discharges the discharge water of the anode chamber in the original retaining type electrolyzed water generator that controls the raw water flowing into the electrolytic cell at the stage before the electrolytic cell inflow, as it prevents the return to the drainage route via the raw water distribution pipe. An electrolyzed water generator with a backwash mechanism, characterized in that a float valve is attached to a branch pipe branched from the vicinity so that it can come into contact with the atmosphere. 2. The electrolyzed water producing apparatus with a backwash mechanism according to claim 1, wherein the float valve is provided with an adjusting member for controlling an air flow.