JPH0623358A - Water electrolytic apparatus - Google Patents

Abstract

PURPOSE:To increase the amount of one ionized water with respect to the amount of raw water to enhance yield by opening the acidic water branch passage of a primary electrolytic cell when the alkali water discharge passage of this cell is opened and reversely opening and closing both of the alkali water and acidic water branch passages of the cell when the alkali water branch passage is closed and the acidic water discharge passage of the cell is opened. CONSTITUTION:The alkali water branch passage 8 branched from the alkali ion water discharge passage 8 of a primary electrolytic cell 1 and provided with a solenoid valve 13B and a check valve 14B and the acidic water branch passage 9 branched from the acidic ion water discharge passage 9 of the cell 1 and provided with a solenoid valve 13A and a check valve 14A are arranged to the water supply passage of a secondary electrolytic cell 10. A float switch 16B functioning so as to open the solenoid valve 13A of the acidic water branch passage 9' and to close the solenoid valve 13B of the alkali water branch passage 8' when the alkali discharge passage 8 is opened and a float switch 16A functioning so as to open the solenoid valve 13B of the alkali water branch passage 8 and passage 9' when the acidic water discharge passage 9 is opened are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Use of the Invention] The present invention is a water system in which a plurality of water-flowing electrolyzers are connected in series to selectively secondary-electrolyze alkaline or acidic ion water produced by primary electrolysis. Of electrolysis equipment.

[Problems to be solved by the invention]

 In an electrolysis device in which water is passed through an electrolytic cell that is partitioned by a partition for electrolysis between the positive electrode and the negative electrode, and is taken out as alkaline ionized water and acidic ionized water, the degree of acid and alkali generated by electrolysis has conventionally been reduced. Since it is weaker than the case of using chemicals, for example, it is considered that acidic ion water that has just been formed cannot obtain the pH value of alkaline water even if it is electrolyzed again. The non-use side ionized water was discarded by one electrolytic treatment. By the way, when electrolyzing water to obtain alkaline water with a desired pH value, the water flow ratio is at most about 1 on the acidic water side to 2 on the alkaline water side, and if the ratio on the alkaline water side is increased more than that. The pH of alkaline water is insufficient and it cannot be put to practical use. Therefore, one-third of the supplied raw water was thrown away, and the yield of alkali-produced water relative to the amount of raw water was poor, which was uneconomical. Similar problems occur when obtaining acidic water.

 A first object of the present invention is to selectively secondary electrolyze one of alkaline ionized water or acidic ionized water produced by primary electrolysis by operating a valve to increase the amount of one ionized water with respect to the amount of raw water. It is to improve the yield against the amount of water.

 The second object of the present invention is, in addition to the above objects, an electrolytic apparatus capable of automatically distributing comparatively strong alkaline or acidic water and normal alkaline or acidic water from separate drainage ports and taking in water. To provide.

[Means for solving problems]

 The first object of the present invention is to provide a plurality of water flow type electrolyzers having a water supply channel on one side of an electrolytic cell and an alkaline ionized water discharge channel and an acidic ionized water discharge channel on the other side. A branch path from the alkaline ionized water discharge path of the primary electrolyzer and an alkaline side branch path with a solenoid valve and a check valve interposed between it and the acidic ionized water discharge path of the primary electrolyzer, and The solenoid valve and the acidic side branch passage with the check valve interposed are arranged as the water supply passage of the secondary electrolyzer, and when the alkaline water discharge passage of the primary electrolyzer is opened, the solenoid valve of the acidic water side branch passage is opened. An alkaline side open / close detector that functions to open and close the solenoid valve on the alkaline water side branch, and opens the solenoid valve on the alkaline water side branch when the acidic water discharge path of the primary electrolyzer opens. To provide an acid side opening / closing detection device that functions to close the solenoid valve of the water side branch passage Ri is achieved.

 The second object of the present invention is to provide a plurality of water flow-type electrolyzers having a water supply channel on one side of an electrolytic cell and an alkaline ionized water discharge channel and an acidic ionized water discharge channel on the other side. Alkali side branch path branched from the alkaline ionized water discharge path of the primary electrolyzer and interposing a solenoid valve and a check valve, and branched from the acidic ionized water discharge path of the primary electrolyzer and solenoid valve and check valve The acid side branch passage with the interposition of is placed as the water supply passage of the secondary electrolyzer, and a solenoid valve is provided in each of the alkaline ionized water discharge passage and the acidic water discharge passage of the secondary electrolysis machine. A pair of communication paths are provided from the upstream side of the solenoid valve through the check valve to the corresponding alkaline or acidic ionized water discharge passage of the primary electrolyzer. Open the solenoid valve in the branch passage and the solenoid valve in the acid water discharge passage of the secondary electrolyzer. The alkaline side opening / closing detector that functions to close the solenoid valve on the alkaline side branch path and the solenoid valve on the alkaline water discharge path of the secondary electrolyzer, and the alkaline side when the acidic water discharge path of the primary electrolyzer opens. Open and close the solenoid valve on the branch path and the alkaline water discharge path of the secondary electrolyzer, and open and close the acidic side branch solenoid valve and the acidic water discharge path of the secondary electrolyzer on the acidic side opening and closing. It is achieved by providing a detection device.

Example of Invention

 Embodiments of the present invention will be described below with reference to the drawings.

 In the figure, reference numeral 1 denotes a primary electrolysis in which a positive electrode 3 is arranged in an outer cylinder which constitutes a negative electrode 2, and a partition 4 for electrolysis separates both electrodes 2 and 3 into a cathode chamber 5 and an anode chamber 6. Is a machine (electrolysis unit), one end of which is connected to the raw water supply passage 7 communicating with the electrode chambers 5 and 6, and the other side of which is connected with an alkaline ionized water discharge passage 8 communicating with the cathode chamber 5 and an acid chamber communicating with the anode chamber 6. It is connected to the ion water discharge channel 9.

 10 is a secondary electrolyzer having a structure similar to that of the above-mentioned primary electrolyzer 1 and having an alkaline ionized water discharge passage 11 and an acidic ionized water discharge passage 12. The secondary electrolyzer 10 selectively secondary-electrolyzes alkaline ionized water or acidic ionized water treated by the primary electrolyzer 1, and therefore the alkaline water discharge passage 8 of the primary electrolyzer 1 is used. And a pair of branch paths 8'and 9'branched from the acidic water discharge path 9 are connected as a water supply path of the secondary electrolyzer 10. Each of the branch passages 8'and 9'is provided with electromagnetic valves 13A and 13B whose opening and closing are controlled by a flow switch which will be described later, and check valves 14A and 14B are provided on the downstream sides thereof, respectively. It is installed to prevent water from flowing from one branch to the other.

 The acidic ionized water discharge passage 9 of the primary electrolyzer 1 is provided with an opening / closing member 15A such as a cock on the front end side, and a flow switch 16A is provided between the opening / closing member 15A and the branch point of the branch passage 9 '. . Similarly, the alkaline ionized water discharge passage 8 is also provided with an opening / closing member 15B on the tip side, and a flow switch 16B is provided between the opening / closing member 15B and the branch point of the branch passage 8 '.

 When the opening / closing member 15B is opened and water flows into the alkaline water discharge passage 8 of the primary electrolyzer 1, the flow switch 16B of the discharge passage 8 senses this and closes the solenoid valve 13B of the branch passage 8'and closes the branch passage 9 '. An electric circuit is formed so as to open the solenoid valve 13A '.

 Similarly, in the flow switch 16A, when the opening / closing member 15A is opened and water flows into the acidic water discharge passage 9, the solenoid valve 13A in the branch passage 9'is closed, and the solenoid valve 13B in the branch passage 8'is opened. It is rare.

 Solenoid valves 13A and 13B are designed to close when water flow signals are input from both flow switches 16A and 16B. Since the electrolyzer of FIG. 1 has the above-mentioned configuration, when a large amount of alkaline ionized water is produced, the tip opening / closing member 15A of the acidic water discharge passage 9 is closed and the opening / closing member 15B of the alkaline water discharge passage 8 is opened. In this state, the electrolyzer is operated while supplying raw water from the water supply passage 7 with a pump (not shown). In this state, the solenoid valve 13B is closed and the solenoid valve 13A is open, so that the alkaline ion water generated in the primary electrolyzer 1 is taken from the discharge passage 8 and the acidic ion water is branched from the branch passage 9. 'Is introduced into the secondary electrolyzer 10 and is separated into alkaline water and acidic water by electrolysis again.

 On the other hand, when a large amount of acidic water is to be produced, the opening / closing member 15A of the acidic water discharge passage 9 may be opened and the opening / closing member 15B of the alkaline water discharge passage 8 may be closed. In this state, the solenoid valve 13A is closed and the solenoid valve 13B is opened by the operation of the flow switch 16A, so that the primary acidic ion water is taken out from the discharge passage 9 and the primary alkaline water is re-used by the secondary electrolyzer 10. It is electrolyzed and separated into acidic ionized water and alkaline water.

 When both the discharge passages 8 and 9 of the primary electrolyzer are opened, the branch passages 8'and 9'are closed by the solenoid valves 13A and 13B. Therefore, in this case, the secondary electrolysis is turned off and the device operates as the primary electrolysis only.

 The alkaline water and the acidic water generated by the secondary electrolysis may be drained as they are from the alkaline water discharge passage 11 and the acidic water discharge passage 12, respectively, but as shown in the figure, a connecting passage 18 with a check valve 17 interposed. It is also possible to connect the secondary side and the corresponding discharge side of the primary side, and combine the primary treated water and the secondary treated water to take them out. Further, it can be selectively drained by the switching valve 19.

 In the embodiment shown in FIG. 2, in addition to the configuration shown in FIG. 1, an adjusting member 20 for changing the flow rate, water pressure, etc. is provided in one or both of the ion water discharge passages 8 and 9.

As the adjusting member 20, a flow rate adjusting valve or a water pressure adjusting resistor is used. Of course, a device having these functions may be used. Therefore, by adjusting the flow rate, the pH of the electrolyzed water is adjusted, the production ratio of alkaline water and acidic water is adjusted, and the primary ion corresponding to the pressure loss of the branches 8'and 9'is adjusted. The water pressure in the water discharge channel is adjusted to maintain the initial ratio of alkaline water to acidic water. For example, when acid water from the primary electrolysis is subjected to the secondary electrolysis, calcium such as hypochlorous acid produced by the primary electrolysis is removed, and when alkaline water is subjected to the secondary electrolysis, calcium carbonate that easily crystallizes is removed. It is advantageous to remove. Therefore, in FIG. 2, a pretreatment member such as a washer 21 is provided in the acidic water branch passage 9 ', and a pretreatment member such as a filter 22 is provided in the alkaline moisture branch passage 8'. The initial generation ratio of alkaline water and acidic water is maintained by giving the resistance corresponding to the pressure loss of the treatment member to the corresponding primary ionized water discharge passage. When the adjusting members 20 are provided in the respective ion discharge paths 8'and 9 ', the adjusting members 20 may be operated individually as shown in the figure, but both of them can be removed by using a double valve or the like. The exit routes may be adjusted at the same time.

 FIG. 3 is a flow chart of an apparatus which achieves the second object of the present invention, which comprises the following essential constituent members in addition to the constitution of FIG. That is, a solenoid valve 23A is provided in the acidic ion water discharge passage 12 of the secondary electrolyzer 10, and a communication path 18A from the upstream side of the solenoid valve 23A to the primary acidic ion water discharge passage 9 via a check valve 17A. On the other hand, on the other hand, a solenoid valve 23B is similarly installed in the secondary alkaline water discharge passage 11, and a check valve 17B is interposed from its upstream side toward the primary alkaline water discharge passage 8. These solenoid valves 23A and 23B are connected to each other, and when the opening / closing member of the primary alkaline water discharge passage 8 is opened, the solenoid valve 23A is opened by the signal of the flow switch 16B and the solenoid valve 23B is opened. Is closed and the opening / closing member of the acidic water discharge passage 9 is opened, the solenoid valve 23B is opened by the signal of the flow switch 16A, and the solenoid valve 23A is closed to form an electric circuit. In this case, the switching valve 19 shown in FIG. 1 becomes unnecessary in the invention shown in FIG. With the above configuration, when the primary alkaline water discharge passage 8 is opened and the primary acidic drainage passage 9 is closed for electrolysis to extract a large amount of alkaline ionized water, the primary alkaline water is taken from the discharge passage 8 and the primary acidic water is branched. The secondary electrolyzer 10 is introduced from the line 9'and electrolyzed again. Since the electrolysis at this time is the secondary electrolysis of acidic water, the secondary acidic water is more acidic than the primary acidic water, and the secondary alkaline water is weaker alkaline than the primary alkaline water. Further, in this state, the electromagnetic valve 23B of the secondary alkaline water discharge passage 11 is closed and the electromagnetic valve 23A of the secondary acidic water discharge passage 12 is opened, so that the weak alkaline secondary alkaline water is discharged to the primary via the connecting passage 18B. The secondary acidic water is extracted as strong acidic water from its own discharge channel 12, while it joins the alkaline water discharge channel and is taken in together.

 On the contrary, in order to take out a large amount of acidic water, the primary acid water discharge channel 9 is opened, the primary alkaline water discharge channel 8 is closed, and electrolysis is performed, the primary acidic water is taken from the discharge channel 9 as it is, and the primary alkaline water is branched. It is introduced into the secondary electrolyzer 10 through the line 8'and electrolyzed again. Since the electrolysis at this time is the secondary electrolysis of alkaline water, the secondary alkaline water becomes more alkaline and the secondary acidic water becomes weakly acidic. In this state, since the solenoid valve 23A of the secondary alkaline water discharge path 12 is closed, the weak secondary acidic water merges with the primary acidic discharge path and is taken out all at once, whereas the secondary acidic water discharge path is discharged. Since the 12 solenoid valves 23B are open, the secondary alkaline water is taken out as strong alkaline water from the unique discharge passage 11. As described above, in the embodiment shown in FIG. 3, weak alkaline water or weak acidic water produced by secondary electrolysis is combined with primary electrolytically treated water and taken out from the discharge channel 8 or 9, and strong alkaline water or strong acidic water is unique. The circuit is automatically controlled so as to be discharged from the discharge passage 11 or 12.

 Similar to FIG. 2, in FIG. 4, the flow rate and water pressure adjusting device 20 is installed in the ion water discharge passages 8 and 9 of the primary electrolysis machine 1 in the embodiment of FIG. 3, and the branch passages 8 ′ and 9 ′ are provided. Further, a pretreatment member for secondary electrolysis such as a cleaning device 21 and a filter 22 is provided, and its function is as described in the explanation of FIG. 1 to 4, in the secondary electrolyzer 10, the distance between the electrodes of the secondary electrolyzer 10 should be made smaller with respect to the primary electrolyzer 1, or the secondary electrolysis time should be longer. By increasing the voltage, the electrolysis efficiency of the entire device can be further improved.

 In the figure, 24 is a cleaning circuit connected to the water supply passage 7 of the primary electrolyzer 1 via a switching valve 25, a cleaning liquid tank 26, a cleaning liquid pump 27 and a check valve 28, 29 is an electromagnetic valve closed during cleaning, 30 Is a switching valve.

 1 to 4 show, as a primary electrolyzer 1 and a secondary electrolyzer 10, a positive electrode 3 having a circular cross section is arranged at the center of a cylindrical negative electrode 2 and a cylindrical shape is provided between both electrodes. An example of using a cylindrical electrolytic cell in which the cathode compartment 6 and the positive compartment 5 are divided by the electrolyte membrane 4 is shown, but as shown in FIG. 5 and FIG. Of course, it is also possible to use a flat type electrolytic cell in which the flat negative electrode 2 and the positive electrode 3 are arranged in parallel. By the way, FIGS. 5 and 6 show four rows of the primary electrolyzers 1 and two rows of the secondary electrolyzers 10 arranged in parallel in a common casing C. The circuit configuration of FIG. 1 corresponds to the embodiment of FIG. 1, and similarly, the circuit configuration of the embodiment of FIG. 6 corresponds to the embodiment of FIG. Therefore, since the same reference symbols indicate the same members, the operation is as described in the embodiment of FIGS. 1 and 3.

 Although not shown, the water circuit of the embodiment shown in FIGS. 5 and 6 has a water pressure adjusting device 20 corresponding to the embodiment shown in FIGS. 2 and 4 and a pretreatment member such as a washer 21 and a filter 22. It is, of course, possible to construct an electrolysis apparatus corresponding to FIGS. 2 and 4 using a flat electrolytic cell by providing the above.

 When the above flat type electrolytic cell is used, it is preferable to provide the water supply part and the drain part of the electrolytic cell so as to face each other near the diagonal corners of the rectangular cross section of the electrolytic cell as shown in FIG. A running-water type electrolyzer tends to generate heat when water retains during electrolysis, but with this configuration, water passes well up to the squares of the rectangular section of the electrolytic cell, making it difficult for water to stay in the corners. Because. In this case, a baffle plate 31 for evenly circulating water may be provided in the corner on the water supply side or in the electrolytic cell.

 In each of the above embodiments, the flow switch is used as the opening / closing detection device for the alkaline water discharge path and the acidic water discharge path, but the present invention is not limited to this, and for example, the end of the discharge path. It may be a device that transmits an opening / closing signal by opening and closing the cock of the above, or may be operated by a signal from another mechanical device incorporating the device of the present invention. In short, any structure may be used as long as it controls opening and closing of the electromagnetic valve in synchronization with opening and closing of the discharge passage.

〔The invention's effect〕

 The present invention selectively secondary-electrolyzes either acidic ion water or alkaline ion water generated by primary electrolysis as described above, and can further generate alkaline water or acidic water. The raw water can be effectively used by increasing the production ratio of ionized water. In particular, the ionized water to be used is selected simply by opening and closing the primary electrolysis discharge channel, so secondary electrolysis of alkaline water and acidic water can be shared by a single device, and the operation is extremely simple. In particular, in the cleaning industry and the like, it is known that the alkaline water generated by electrolysis significantly enhances the cleaning effect of the detergent, while the acidic ion water significantly enhances the rinsing efficiency. In this case, almost 1: 1 ratio of alkaline water and acidic water is required, and since the “washing” and “rinsing” steps of the washing machine are automatically exchanged, it is possible to efficiently and efficiently achieve the desired results as in the present invention. What is needed is a device that can automatically extract ionized water. Therefore, the device of the present invention can be incorporated and used as a part of an automatic washing machine.

 Further, in the inventions of FIGS. 3 and 4, weakly acidic water or normal alkaline water and strongly acidic water or strong alkaline water are provided separately and automatically controlled from the intake. Particularly, strong acidic water and alkaline water are excellent in removing stains and washing water in the cleaning industry, so that it is more and more necessary to separate strongly acidic water and alkaline water. The present invention is highly practical from this point as well.

 Furthermore, when a flat-type electrolytic cell electrolyzer is used as shown in Figs. 5 and 6, one casing (tank) can be divided into a primary electrolytic cell and a secondary electrolytic cell to form an integral structure. Manufacturing cost can be reduced and the device can be made compact and small. Also, by arranging the water supply part and drainage part of the flat electrolyzer in the diagonal direction of the cross section of the electrolyzer, it is possible to prevent water from accumulating and improve efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart showing an embodiment of the first invention of the present application, FIG. 2 is a flow chart of an embodiment further improving the embodiment of FIG. 1, and FIG. 3 is a flowchart of the second invention of the present application. FIG. 4 is a flow chart showing an embodiment, FIG. 4 is a flow chart of an embodiment in which the embodiment is further improved, FIG. 5 is a first embodiment of the embodiment using a flat electrolytic cell, and FIG. 6 is the same. FIG. 3 is a view corresponding to FIG. 3 of an embodiment in which a flat electrolytic cell is used, and FIG. 7 is an explanatory view of essential parts showing a preferred embodiment of the flat electrolytic cell. 1 ... Primary electrolyzer, 7 ... Water supply channel, 8 ... Primary alkaline water discharge channel, 8 '... Alkaline side branch channel, 9 ... Primary acidic water discharge channel, 9' ... Acidic side branch channel, 10 ... Second Secondary electrolyzer, 11 ... Secondary alkaline water discharge passage, 12 ... Secondary acidic water discharge passage, 13A, 13B, 23A, 25B ... Solenoid valve, 15A, 15B ... Opening / closing member, 16A, 16B ... Flow switch, 18A, 18B ... communication path, 19 ... switching valve, 20 ... regulator, 21 ... washer, 22 ... filter, 24 ... washing circuit, 26 ... wash liquid tank, 27 ... pump after washing.

Claims (10)

[Claims] 1. A primary electrolyzer having a plurality of water flow-type electrolyzers having a water supply channel on one side of the electrolytic cell and an alkaline ion water discharge channel and an acidic ion water discharge channel on the other side. Of the alkaline ionized water discharge path and the alkaline side branch path with a solenoid valve and a check valve interposed between it and the acidic ionized water discharge path of the primary electrolyzer with an electromagnetic valve and a check valve The acidic side branch passage is arranged as a water supply passage for the secondary electrolyzer, and when the alkaline water discharge passage of the primary electrolyzer is opened, the solenoid valve of the acidic water side branch passage is opened and the alkaline water side branch passage is opened. The alkaline side opening / closing detection device that functions to close the solenoid valve, and when the acidic water discharge path of the primary electrolyzer is opened, the solenoid valve of the alkaline water side branch path is opened and the electromagnetic valve of the acidic water side branch path is opened. A water battery characterized by being equipped with an acid side opening / closing detection device that functions to close. Apparatus. 2. The water electrolysis apparatus according to claim 1, wherein the primary electrolyzer and the secondary electrolyzer are cylindrical electrolyzers. 3. The primary electrolyzer and the secondary electrolyzer have a flat-type electrolyzer in which flat-plate negative and positive electrodes are arranged in parallel on opposite sides of a flat-plate electrolyte membrane. A water electrolysis device according to claim 1. 4. The electrolytic cell of the primary electrolyzer and the electrolytic cell of the secondary electrolyzer are arranged so as to be partitioned in a common casing, and the electrolytic cell according to claim 3 or claim 3. Water electrolyzer. 5. The water supply unit and the drainage unit of the flat electrolytic cell of the primary electrolyzer are further provided so as to face each other in a diagonal direction of a quadrangular cross section. Item 3. The water electrolysis apparatus according to Item 3 or 4. 6. A primary electrolyzer having a plurality of water flow-type electrolyzers having a water supply channel on one side of the electrolytic cell and an alkaline ion water drainage channel and an acidic ion water discharge channel on the other side. Alkali side branch path branched from the alkaline ionized water discharge path and the solenoid valve and the check valve were intervened, and branched from the acidic ionized water discharge path of the primary electrolyzer and the solenoid valve and the check valve were interposed. The acidic side branch passage is arranged as a water supply passage for the secondary electrolyzer, and an electromagnetic valve is installed in each of the alkaline ion water discharge passage and the acidic water discharge passage of the secondary electrolyzer. A pair of connecting passages communicating with the corresponding alkaline or acidic ionized water discharge passage of the primary electrolyzer via the stop valve is provided.When the alkaline water discharge passage of the primary electrolyzer is opened, the solenoid valve of the acidic side branch passage Open the solenoid valve on the acidic water discharge path of the secondary electrolyzer and set it on the alkaline side. The alkaline side opening / closing detection device that functions to close the electromagnetic valve at the crossroads and the electromagnetic valve at the alkaline water discharge path of the secondary electrolyzer, and the solenoid valve at the alkaline side branch path when the acidic water discharge path of the primary electrolyzer opens. And an acid side opening / closing detector that functions to open the solenoid valve of the alkaline water discharge path of the secondary electrolyzer and close the solenoid valve of the acid side branch path and the solenoid valve of the acid water discharge path of the secondary electrolyzer. A water electrolysis device characterized by the above. 7. The water electrolysis apparatus according to claim 6, wherein the primary electrolyzer and the secondary electrolyzer are cylindrical electrolyzers. 8. The primary electrolyzer and the secondary electrolyzer have a flat electrolytic cell in which a flat negative electrode and a positive electrode are arranged in parallel on opposite sides of a flat electrolytic diaphragm. The water electrolysis apparatus according to claim 6, wherein 9. The electrolysis of water according to claim 8, wherein the electrolytic cell of the primary electrolyzer and the electrolytic cell of the secondary electrolyzer are arranged so as to be partitioned in a common casing. apparatus. 10. The water supply unit and the drainage unit of the flat electrolyzer of the primary electrolyzer are further provided so as to face each other in a diagonal direction of a quadrangular cross section. Item 8. The water electrolysis apparatus according to Item 8 or 9.