JPS638832B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrolyzed water manufacturing apparatus that generates alkaline ionized water, and particularly relates to an electrolyzed water manufacturing apparatus that has a configuration for continuously manufacturing electrolyzed water in a barge type. It is something.

As this type of manufacturing apparatus, the present inventor has already adopted a system as shown in FIGS. 1 and 2. In the case shown in Figure 1, a cathode chamber a and an anode chamber b are separated by a partition wall c made of unglazed ceramic, etc., and electrodes d and e are placed in the bipolar chambers a and b, respectively, to which a DC voltage is applied. In addition to performing electrolysis and electroosmosis of water, each electrode chamber is provided with drain valves f and g at the bottom, respectively, and water is supplied to the cathode chamber a and the anode chamber b. A level sensor h is disposed at , and water is supplied from the cathode chamber a over the partition wall c to the anode chamber b, and the water supply is automatically stopped by the action of the level sensor h. With this manufacturing equipment,
There is a tank i that stores alkaline ionized water supplied from a cathode chamber a through a drain valve f, and a level sensor j is installed in this tank.
When the water in the storage tank i has been used and has fallen below a certain level, this is transmitted as a signal to a control system (not shown), which performs the sequence of water supply, electrolysis, and drainage. The problem here is that the water in the upper part of the cathode chamber a collides with the partition wall c during the electrolysis process.
This is the point where it flows into the anode chamber b. To understand this problem, we must know the following actual situation. As is well known, when electrolysis is carried out, the water level in the cathode chamber a rises due to electroosmosis, and the hydroxyl ion concentration also increases, but the distribution of this hydroxyl ion is biased upward, A situation is realized in which the concentration is high and low at the bottom. On the other hand, in the anode chamber b, the water level decreases due to electroosmosis, and a distribution situation in which the acidity is high at the top and low at the bottom is realized. Therefore, during electrolysis, when the level in the cathode chamber a rises due to electroosmosis, the portion of water with the highest hydroxyl ion concentration crosses the partition wall c and enters the anode chamber b, causing a neutralizing effect. It takes a considerable amount of time to raise the average hydroxyl ion concentration of the water in the room a to a predetermined value, and there are disadvantages in terms of performance such as large power loss.

Furthermore, as shown in FIG. 2, a method was adopted in which water was supplied to the anode chamber b side and the level sensor h was placed on the cathode chamber a side. In this case, during the initial water supply stage, water is supplied to the cathode chamber a side due to overflow, so scales left on the acidic water side (resin system such as ABS resin, electrolytic residue, electrode eluate, sulfur, etc.) enters the cathode chamber a side,
Also, residual acidic water may enter. For this reason, even if good-tasting alkaline ionized water for use in beverages is produced in the cathode chamber a, there is a drawback in that the quality of the taste is significantly degraded by the previously introduced scale, residual acidic water, and the like.

The present invention was made based on the above circumstances, and although it is an overflow type from the cathode chamber to the anode chamber, it does not reduce the efficiency of increasing the hydroxyl group ion concentration, and furthermore, it does not reduce the taste of the generated alkaline ion water. It is an object of the present invention to provide an apparatus for producing electrolyzed water that does not cause problems.

Hereinafter, one embodiment of the present invention will be specifically described with reference to FIG. In the figure, reference numeral 1 denotes an electrolytic cell that generates drinking water in a barge type. For example, it is partitioned into two internal and external chambers by a porous partition wall 2 such as a cylindrical bisque, with a cathode chamber 3 on the outside and an anode chamber 4 on the inside. That is. Electrodes 5 and 6 are disposed in each electrode chamber 3 and 4, respectively, and a DC voltage is applied by turning on the switch.
In addition, drain channels 7 and 8 are provided at the bottom of each electrode chamber 3 and 4, and there are solenoid-type drain valves 9 and 8.
10 are provided. In addition, a water supply valve 1 is provided in the cathode chamber 3.
1, and an overflow passage 12 is provided from the bottom of the cathode chamber 3 to the top of the anode chamber 4. In this embodiment, the overflow passage 12 is constructed of a tubular body. On the other hand, a level sensor 13 is provided in the cathode chamber 3, and its contact level with water is higher than the top of the overflow passage 12.

In the figure, reference numeral 14 is a storage tank that communicates with the drainage channel 7, and is provided with a supply tank 15 and a level sensor 16.

Next, the sequential operation of this device will be explained. When the water in the storage tank 14 falls below a predetermined level, the level sensor 16 detects this and operates a control system (not shown) to open the water supply valve 11. The water level in the cathode chamber 3 is overflow passage 1
2, water begins to enter the anode chamber 4 through the passage 12. When the water level in the anode chamber 4 exceeds the top opening of the Yerba flow passage 12, the water level in both electrode chambers 3 and 4 rises to the same level, reaching the water level as shown in FIG. 11 is closed, a DC voltage is applied to the electrodes 5 and 6, and electrolysis is performed for a time set by a timer or the like.

During this electrolysis process, due to the electroosmotic action,
Although there is movement of water from the anode chamber 4 to the cathode chamber 3, there is no difference in water level between the two electrode chambers 3, 4 due to reflux from the cathode chamber 3 to the anode chamber 4 via the overflow passage 12. Moreover, since the water is refluxed from the overflow passage to the anode chamber 4 from the lower part of the cathode chamber 3, the water with the lowest ion concentration is refluxed, and the ion concentration in the upper part of the cathode chamber 3 is refluxed. The high water portion is retained in the cathode chamber 3. Moreover,
During electrolysis, the flow of water from the overflow passage 12 is unidirectional, and water in the anode chamber 4 can only enter the cathode chamber 3 by electroosmosis.
When the electrolytic action is completed, the voltage application to the electrodes 5 and 6 is canceled by the action of a timer, etc., and each drain valve 9,
10 is opened, the alkaline ionized water in the cathode chamber 3 enters the storage tank 14, and the acidic water in the anode chamber 4 side is
In this embodiment, it is drained via a drain valve 10.

In this embodiment, it is preferable that the drain valve 10 is opened first and the opening of the drain valve 9 is delayed until the level of the anode chamber 4 falls below the level of the top opening of the overflow passage 12. For this purpose, it is preferable to provide another level sensor 17 in the cathode chamber 3. During this time, the water at the bottom of the cathode chamber 3 flows to the anode chamber 4 side via the overflow passage 12, so that the amount of acidic water brought to the cathode chamber 3 side via the overflow passage 12 is completely eliminated. Note that even if the drain valves 9 and 10 are opened at the same time, if the water level in the anode chamber 4 is lower than that in the cathode chamber 3 at a high level drop rate, the cathode water will substantially flow through the overflow passage 12. There is no risk that water will overflow from the chamber 3 to the anode chamber 4 or that water in the anode chamber 4 will flow into the cathode chamber 3 side.

In reality, the bottom opening of the overflow passage 12 is
It is advisable to devise measures to prevent suction from acting on the overflow passage 12 at the initial stage of drainage by placing it as far away from the opening of the drainage passage 7 as possible. For this,
As shown, the bottom opening of the overflow passage 12 is located on the opposite side of the drain passage 7.

As described in detail above, the present invention is a device in which a cathode chamber and an anode chamber are separated by a porous partition, electrodes are arranged in the bipolar chambers, and a DC voltage is applied to perform water electrolysis and electroosmosis. Water is supplied to the cathode chamber, an overflow passage is provided that communicates from the bottom of the cathode chamber to the top of the anode chamber, and both electrode chambers are configured to drain water from the bottom through drain valves, and the level sensor is connected to the overflow passage. In addition, when the drain valve is opened to drain water, the water level in the anode chamber drops to at least below the top opening of the overflow passage, whereas the water level in the cathode chamber is placed higher than the top opening of the overflow passage. The water level was configured to be drained above the water level in the anode chamber, so although it is an overflow type from the cathode chamber to the anode chamber, it does not reduce the efficiency of increasing the hydroxyl ion concentration, and moreover, the acid water Since there is no risk of the alkaline ionized water entering the alkaline ionized water side, the effect of not reducing the taste of the alkaline ionized water can be obtained.

[Brief explanation of the drawing]

1 and 2 are drawings showing a conventional system, and FIG. 3 is a drawing showing an embodiment of the present invention. 1... Electrolytic cell, 2... Partition wall, 3... Cathode chamber, 4
... Anode chamber, 5, 6 ... Electrode, 7, 8 ... Drain channel, 9, 10 ... Drain valve, 11 ... Water supply valve, 12
...Overflow passage, 13...Level sensor,
14...Storage tank, 15...Supply tank, 1
6,17...Level sensor.

Claims (1)

[Claims] 1 In a device in which a cathode chamber and an anode chamber are separated by a porous partition, electrodes are placed in both electrode chambers, and a DC voltage is applied to perform water electrolysis and electroosmosis, water is supplied to the cathode chamber, An overflow passage is provided that communicates from the bottom of the cathode chamber to the top of the anode chamber, and both electrode chambers are configured to drain water from the bottom through drain valves, and a level sensor is placed higher than the opening at the top of the overflow passage to stop the water supply. Furthermore, when the drain valve is opened to drain water, the water level in the anode chamber drops to at least below the top opening of the overflow passage, while the water level in the cathode chamber is lower than the water level in the anode chamber. An electrolyzed water production device characterized by being configured to drain water as shown above.