JP5470088B2 - Electrolytic operation method of electrolyzed water generating apparatus equipped with diaphragm electrolyzer - Google Patents

Description

The present invention relates to electrolytic OPERATION The method of electrolytic water generator with closed diaphragm electrolyzer.

In Patent Documents 1 and 2 below, as one form of electrolytic water generator with closed diaphragm electrolytic cell is produced by electrolysis at the electrolytic chamber chromatic diaphragm electrolytic cell to be electrolyzed water is a dilute brine electrolytic water generation apparatus of the acidic and form to efflux alkaline electrolyzed water is disclosed that.

In electrolytic water generation apparatus of the type, the Ca ions and Mg ions are present in the raw water or salt water or the like to prepare to be electrolyzed water, the cathode scale especially due to Ca ions and Mg ions, etc. when chromatic membrane electrolysis phenomenon adhering deposit to many occurring in aqueous conduit deposition deposited downstream side in the electrolytic chamber side electrolyte chamber is observed. When the scale is collected and deposited into the electrolyte chamber, would greatly decrease the electrolysis efficiency in the electrolysis chamber, the collected and deposited in the aqueous pipeline of the same scale downstream side, clog the water line, This will adversely affect the outflow of electrolyzed water.

Therefore, the electrolytic water generator with closed diaphragm electrolytic cell of this type, measures for removing scale generated in the electrolyte chamber is requested. Each electrolytic water generation apparatus proposed in the following patent documents is interposed a water softener to the supply line of the raw water, it employs a means for removing the scale components in raw water, also the electrolysis operation at predetermined time elapsed when the point (before the occurrence of scale is), the electrolysis operation of the opposite polarity by reversing the polarity of the electrodes of each electrolysis chamber, adopts a means for preventing the occurrence of scale in each electrolysis chamber Yes.

Among these means, it is difficult to sufficiently prevent the generation of scale in each electrolysis chamber with the former means for removing scale components by the water softener, and with the latter means for performing reverse polarity electrolysis operation, since the positive electro-monkey electrolyzed water in the electrolyte chamber and the operation of the different, it is necessary to replace off the outlet line of the electrolyzed water, must be used expensive passage switching valve is in this .

Therefore, in order to remove the scale generated in each electrolysis chamber by reverse polarity electrolysis operation (cleaning operation) , normal electrolysis operation is temporarily stopped and water such as tap water is continuously supplied to each electrolysis chamber. In general, an electrolysis operation of reverse polarity is performed, and a means for continuously draining each electrolyzed water generated by electrolysis is employed.

JP-A-7-222976 Japanese Patent Laid-Open No. 11-244858

By the way, the conventional general cleaning operation (reverse polarity electrolysis operation using water as electrolyzed water) continuously supplies normal water such as tap water to each electrolysis chamber of the diaphragm electrolyzer. This is a so-called flowing water type electrolysis production operation in which diaphragm electrolysis is carried out in each electrolysis chamber, and each electrolysis water produced in each electrolysis chamber flows out continuously. In such a reverse polarity cleaning operation, the electrolyzed water is normal water and does not contain an electrolysis auxiliary agent, so the electrolysis efficiency is poor, and the electrolysis generation has a sufficient cleaning function to clean the electrolysis chamber. It is difficult to produce water, and a long washing operation is required. Further, since the washing operation is flow-electrolyzed operation, increases the amount of water which is to be electrolyzed water, the amount of water is more often by the length times the cleaning operation in addition to.

On the other hand, in the electrolytic generation operation of reverse polarity disclosed in Patent Document 2, in order to obtain a high electrolyzed water of the ability to clean the electrolytic chamber, since the electrolytic water is dilute brine electrolysis chamber cleaning function high electrolyzed water can be produced with it, since it is the flow of water cleaning operation, with many amount of expensive lean brine than water, so that wasteful use of the electrolytic water.

In order to cope with the above-described problems in the cleaning operation of the diaphragm electrolytic cell , the present invention continuously separates the electrolytic water generated in each electrolytic chamber supplied with dilute salt water as electrolyzed water. In the electrolyzed water generating apparatus, the electrolyzed water to be supplied to each electrolysis chamber is electrolyzed, and after flowing water electrolyzed water generating operation for flowing out electrolyzed water generated is performed, the electrolyzed water generating operation at the time of the electrolyzed water generating operation Electrolytic water generated by electrolyzing the water to be electrolyzed retained in the electrolysis chamber in a state where the polarity of the electrode of each electrolysis chamber is reversed is discharged after the elapse of a predetermined time to wash the electrolysis chamber. A batch-type cleaning operation is performed, and then the electrolyzed water generated by electrolyzing the electrolyzed water retained in the electrolysis chambers in a state where the polarity of the electrodes is reversed is discharged after a lapse of a predetermined time. Positive polarity batch cleaning operation to clean the electrolysis chamber There is provided an electrolytic method of operation and performing.

In the electrolysis operation method according to the present invention, the at batch cleaning operation, integrates the time that electrolysis current value of the raw water to be used as the electrolyzed water has exceeded the set value, the loading time exceeds a predetermined time At this point, the batch-type cleaning operation is stopped, and during the time until the predetermined time elapses, the electrolytically generated water is not allowed to flow out of each electrolysis chamber, and may remain in each electrolysis chamber. .

Further, in the electrolysis operation method according to the present invention, the at batch cleaning operation, as the electrolytic operation is after a predetermined time to stop the electrolysis operation, causes each electrolyzed water dwell predetermined time each electrolysis chamber It may be .

Further, in the electrolysis operation method according to the present invention, prior to the batch cleaning operation the opposite polarity, with the polarity obtained by inverting the electrolytic aquatic forming operation when the electrode, to perform the cleaning operation of the flow water type May be.

Further, in the electrolysis operation method according to the present invention, when stopping the electrolytic water generating operation, first, write to stop the application of voltage to the electrodes, and the delay a predetermined time, hit by brine supply pump for supplying water MitoHara The supply of water may be stopped and the electrolyzed water may be maintained in each electrolytic chamber of the diaphragm electrolyzer .

Furthermore, carrying out the electrolysis operation method according to the invention, in the case of employing the organic membrane electrolytic cell comprising an electrolyte chamber of a plurality of pairs formed by pairs of electrodes, the electrolytic water generating operation, batch-type cleaning operation, or, when starting the electrolytic water generating operation and batch type cleaning operation, the powered electrode may or stepwise increased.

Method of operating apparatus for producing electrolyzed water having a perforated membrane electrolysis cell according to the present invention is basically the above-mentioned flow-and batch cleaning operation of the electrolytic water generating operation and the opposite polarity positive polarity batch cleaning operation and made, by electrolysis to be electrolyzed water is dilute brine to generate a high electrolyzed water of cleaning function of the electrolysis chamber, with wear even higher cleaning function electrolyzed water in generation with a batch electrolysis, flow-electrolyte compared to, there is advantage that can have a child significantly reduce the amount of the electrolytic water.

  In addition, in the electrolytic operation method according to the present invention, the operational effects exhibited by the individual electrolytic operation methods specifically shown will be described in conjunction with the embodiment of the electrolytic operation method according to the present invention.

The present invention shows an electrolyzed water generating device to be subjected to electrolysis operation, a state in which the front cover of the case accommodating the electrolyzed water generating device is removed, the electrical component is taken out, and the device main body in the case can be viewed from the front FIG. It is the front view (a) of the said front cover, and the enlarged front view (b) of the operation panel attached to the front cover. It is the rear view which looked at the said apparatus main body from the rear side. It is a schematic block diagram which shows typically the water-system pipe line relationship of the said electrolyzed water generating apparatus. It is the front view (a) of the diaphragm electrolytic cell which the said electrolyzed water generating apparatus carries, and the vertical side view (b) cut | disconnected along the arrow 5-5 line of the same diaphragm electrolytic cell. It is the perspective view (a) of the aggregate | assembly of the electrode plate unit which comprises the said diaphragm membrane electrolytic cell, and the perspective view (b) of the state before superposing | polymerizing the same electrode plate unit. It is operation | movement explanatory drawing which shows the operation | movement procedure in one embodiment of the electrolytic operation method which concerns on this invention. It is graph (a), (b), (c) which shows the measurement result of the inrush current in one embodiment of the electrolytic operation method concerning the present invention. Graphs (a) and (b) for converting hardness from the electrolysis current value of raw water in one embodiment of the electrolytic operation method according to the present invention, and the number of back-type washing operations set based on the hardness of raw water, And it is the graph (c) which shows the electrode consumption (minute), drainage amount (L), and electric power consumption (Wh) which are the result. It is the graph (a) which shows the order of the electrolysis operation stop in the conventional electrolysis operation method, and the graph (b) which shows the order of the electrolysis operation stop in one embodiment of the electrolysis operation method which concerns on this invention.

The present invention relates to an operation method of an electrolyzed water generating apparatus provided with a diaphragm membrane electrolytic cell . FIG. 1 shows an electrolyzed water generating apparatus equipped with a diaphragm membrane electrolytic cell to which the electrolytic operation method according to the present invention is applied . In FIG. 1, the front cover a2 is removed from the case main body a1 of the case A of the electrolyzed water generating apparatus, the electrical component B is taken out, and the apparatus main body C in the case main body a1 is disassembled so that it can be viewed from the front. It is a perspective view of a state. Incidentally, the electrolytic water generating device including the organic diaphragm electrolytic cell, hereinafter that simply referred to as electrolytic water generation apparatus.

  The electrolyzed water generating apparatus is constructed by housing the apparatus main body C in the case main body a1, and a support plate b1 supporting each electrical component is attached to the front surface of the apparatus main body C of the case main body a1. The front side of the case body a1 is covered with a front cover a2. As shown in FIG. 2, an operation panel A1 is assembled to the front cover a2 at the center of the front surface thereof.

  In this mounted state, the support plate b1 that supports each electrical component of the electrical component B functions as a partition plate that partitions each electrical component and the apparatus main body C. The support plate b1 includes a blower fan b2 and air. A mouth b3 is provided. Thus, if the blower fan b2 is driven, an air flow that circulates between the housing part for the electrical component and the housing part for the apparatus main body C can be formed. It is possible to reduce the temperature of each electrical component by returning the component to the component storage side to cool each electrical component.

  3 and 4 show the electrolyzed water generating device, FIG. 3 is a rear view of the electrolyzed water generating device main body C viewed from the rear side, and FIG. 4 shows the electrolyzed water generating device main body. It is a schematic block diagram which shows C typically. As shown in FIG. 5, a diaphragm membrane electrolytic cell D, which is a main component of the electrolyzed water generating device, is configured by accommodating a plurality of electrode plate units 10 in a housing 20 in a polymerized state. Each electrode plate unit 10 has the same configuration, and a pair of electrolysis chambers (an anode side electrolysis chamber and a cathode side electrolysis chamber) are formed inside each electrode plate unit 10.

  As shown in FIG. 5A, the diaphragm membrane electrolytic cell D is configured by housing a plurality of electrode plate units 10 in a housing 20 as an aggregate 10 </ b> A obtained by polymerizing each other. The housing 20 that accommodates the assembly 10A of the electrode plate unit 10 is composed of an upper collar portion 21 and a lower collar portion 22, and the upper collar portion 21 has a shape that slightly expands downward, and the lower collar portion 22 is formed in a shape that slightly expands upward. The casing 20 is joined by superposing the opening portions of the upper flange portion 21 and the lower flange portion 22 to each other, and these opening portions are formed to have the maximum widening width.

  To accommodate the assembly 10A of the electrode plate unit 10 in the housing 20, first, for example, the assembly 10A is inserted into the lower collar portion 22 from below, and then the side spacers 23 are inserted into the inserted assembly 10A. While inserting between the left and right side parts of the lower collar part 22, front and rear spacers (not shown) are inserted between the inserted assembly 10 </ b> A and the front and rear side parts of the lower collar part 22. The upper collar part 21 is fitted to the upper half of the assembly 10A in the inserted state.

  Thereby, the assembly 10A of the electrode plate unit 10 is in a state in which the left and right side portions thereof are in close contact with the side spacers 23, and in the state in which the front and rear side portions thereof are in close contact with the front and rear spacers, It will be in the state accommodated in the housing 20. Each of the spacers 23 has a maximum thickness at the upper and lower central portions. The maximum thickness portion of each spacer 23 and the like is located in a portion equivalent to the joint portion of the upper and lower flange portions 21 and 22, and the adhesion at the joint portion of each spacer 23 and the like is increased, so that the aqueous solution at the joint portion is increased. Etc. are prevented. Moreover, in the said shapes, such as each spacer 23, at the time of decomposition | disassembly of the diaphragm electrolyzer D, if the junction part of the upper and lower collar parts 21 and 22 is open | released, the aggregate | assembly 10A of the electrode plate unit 10 can be taken out easily. .

  As shown in FIG. 6 (b), the electrode plate unit 10 constituting the diaphragm electrolytic cell D is provided on each side surface of the diaphragm 10c in a state of being sandwiched between a pair of square lattice frame spacers 10a and 10b. The electrode plate 10d on the anode side and the electrode plate 10e on the cathode side are respectively arranged while maintaining the interval defined by the spacers 10a and 10b. However, since the electrode plate unit 10 illustrated in FIG. 6B is accommodated in the housing 20 as an aggregate 10A superposed on each other, as shown in FIG. Between the electrode plate units 10, the same electrode plates 10d and 10e are shared.

  As shown in FIGS. 3 and 4, the electrolyzed water generating apparatus equipped with the diaphragm electrolyzer D includes a diaphragm electrolyzer D that generates electrolyzed water, a salt water supply mechanism 30 </ b> A that supplies concentrated salt water, It comprises a raw water supply mechanism 30B for supplying raw water for preparing electrolyzed water and dilution water for diluting electrolyzed water, and an electric part B shown in FIG. 1 on which a large number of electric parts related to electrolysis are mounted.

  In the electrolyzed water generating apparatus, electrolyzed water supply pipes 31 (31a, 31b) for supplying electrolyzed water are provided upstream of the anode electrolysis chamber and the cathode electrolysis chamber of the diaphragm electrolyzer D. And an outflow line 32a through which the electrolytically generated acidic water generated in the anode-side electrolysis chamber flows out downstream of the anode-side electrolysis chamber and the cathode-side electrolysis chamber of the diaphragm electrolyzer D, and An outflow line 32b for flowing out electrolyzed alkaline water produced in the cathode side electrolysis chamber is connected.

  The salt water supply mechanism 30 </ b> A includes a salt water tank E that stores concentrated salt water having a constant concentration, a salt water supply pipe 33 that is connected to the salt water tank E and the tip of the electrolyzed water supply pipe 31, and a salt water supply pipe 33. It becomes the salt water supply pump F mounted. In the salt water supply mechanism 30 </ b> A, during the electrolysis operation, the salt water supply pump F is driven to supply salt water having a constant concentration to the electrolyzed water supply pipe 31 through the salt water supply pipe 33 at a constant flow rate. However, the salt water tank E is located outside the case A, and is connected to the inlet portion of the salt water supply pump F at the upstream side conduit portion 33 a of the salt water supply conduit 33. Further, the downstream pipe line part 33 b connected to the discharge port part of the salt water supply pump F is connected to the base end part of the electrolyzed water supply pipe line 31.

  In this state, the salt water supply pipe 33 connects the salt water tank E and the to-be-electrolyzed water supply pipe 31, and the salt water supply pump F is located in the middle. The salt water supply pump F continuously supplies a constant flow rate of high-concentration salt water in the salt water tank E to the raw water flowing in the raw water supply pipe section described later, and is diluted to a predetermined concentration in the pipe section. Functions to prepare dilute brine. The prepared diluted salt water is supplied as electrolyzed water to each electrolysis chamber of the diaphragm electrolyzer D through the electrolyzed water supply conduit 31. The discharge amount of the salt water supply pump F is controlled by controlling the number of strokes of the salt water supply pump F, and feedback control is performed so that the optimum set electrolyzed water is prepared at that time. The

  The raw water supply mechanism 30 </ b> B mainly includes a main pipeline 34 that supplies raw water. The main pipeline 34 includes a pair of branch pipeline sections 34 a and 34 b that are branched from each other in the middle of the main pipeline 34. A water supply valve 35a is interposed upstream from the branch portion.

  In the raw water supply mechanism 30B, one branch pipe 34a of the branch pipe section is configured as a raw water supply pipe section 34a that supplies raw water for preparing electrolyzed water, and the other of the branch pipe sections. The branch pipe line 34b is configured as a dilution water supply pipe part 34b for supplying dilution water for diluting the electrolytically generated water. The raw water supply pipe part 34 a is connected to a part upstream of the branch part of the electrolyzed water supply pipe 31, and raw water for preparing the electrolyzed water is supplied to the salt water of the electrolyzed water supply pipe 33. It is configured to be. The raw water supplied to the electrolyzed water supply pipe 33 through the raw water supply pipe part 34a dilutes the salt water continuously supplied to the electrolyzed water supply pipe 33 to prepare electrolyzed water having a predetermined concentration. .

  The diluted water supply pipe section 34b constituting the raw water supply mechanism 30B is connected to the outflow pipe 32a of the electrolytically generated acidic water in the middle thereof, and the electrolytically generated acidic water in the middle of the diluted water supply pipe section 34b. Is configured to be supplied. The electrolytically generated acidic water supplied to the dilution water supply pipeline 34b is supplied to the dilution water flowing through the dilution water supply pipeline 34b, diluted to a predetermined concentration, and the tip of the dilution water supply pipeline 34b. It is poured out from the spout 34c provided in.

  In the raw water supply mechanism 30B, a pressure reducing valve 35b is interposed on the upstream side of the water supply valve 35a of the main pipe 34 constituting the raw water supply mechanism 30B. A variable flow valve 35c and a flow meter 35d are interposed between the connecting portions of the pipe line 32a. In the raw water supply mechanism 30B, the connection part 34d where the dilution water supply pipe part 34b and the outflow pipe part 32a are connected is configured as a suction negative pressure generating mechanism having an aspirator structure.

  In the electrolysis operation of the electrolyzed water generation apparatus, a flowing water electrolysis generation operation for performing normal diaphragm membrane electrolysis and a reverse polarity batch type cleaning operation for cleaning each electrolytic chamber, or a reverse polarity batch type cleaning operation and positive polarity It has a batch-type cleaning operation. In the reverse polarity batch-type cleaning operation, each electrolysis water generated in each electrolysis chamber dissolves and removes the scale that adheres to and accumulates in each electrolysis chamber and its downstream side pipe, and each outflow pipe 32a. Each of the electrolyzed water that has flowed out to 32b is drained.

  In the electrolyzed water generating apparatus, the electrolytically generated water that flows out to the outflow pipe 32a by switching the three-way switching valve 36a interposed in the middle of the outflow pipe 32a of one of the electrolyzed water (electrolytically generated acidic water). Alkaline water is drained from the drain port of the drain line 36b. In addition, the electrolytically generated acidic water flowing out to the outflow pipe 32b is drained from the drain port of the outflow pipe 32b in the same manner as the electrolytically generated alkaline water generated during the electrolytic generation operation.

  The electrolysis operation method according to the present invention for electrolyzing the electrolyzed water generation apparatus is basically a batch cleaning operation having a reverse polarity to the flowing water electrolysis generation operation, or a batch type having a reverse polarity to the flowing water electrolysis generation operation. This is a method comprising a cleaning operation and a positive polarity batch cleaning operation.

  The electrolysis operation according to the present invention is started by the opening operation of the water supply valve 35a interposed in the main pipe 34 of the raw water supply pipe of the raw water supply mechanism 30B, and the raw water is supplied to the diaphragm electrolyzer through the raw water supply pipe 34a. While being supplied to the D side, salt water is supplied from the salt water tank E to the raw water supply pipe line 34 a through the salt water supply pipe 33 by driving the salt water pump F. As a result, salt water is supplied to the raw water flowing in the raw water supply pipe section 34a to prepare electrolyzed water that is a diluted salt water having a predetermined concentration, and the prepared electrolyzed water is supplied to each electrolyzed water supply pipe. Through 31a and 31b, it flows into each electrolysis chamber of the diaphragm electrolyzer D and undergoes diaphragm electrolysis.

  Among each electrolytic chamber, electrolytically generated acidic water is generated in the anode-side electrolytic chamber, and synchronously, electrolytically generated alkaline water is generated in the cathode-side electrolytic chamber. The generated electrolytically generated acidic water flows into the dilution water supply pipe section 34b through the outflow pipe 32a, is diluted with raw water flowing through the dilution water supply pipe section 34b, and is diluted to a predetermined concentration. The generated acidic water is poured out from the spout 34c. On the other hand, the electrolytically generated alkaline water generated in the cathode side electrolysis chamber is not intended to be used in the electrolytic water generating apparatus, and is thus drained through the outflow pipe 32b. In the present invention, the above diaphragm membrane electrolysis is referred to as flowing water type electrolysis production operation.

  In the electrolytic operation method according to the present invention, a batch type electrolytic operation with a reverse polarity is performed to remove the scale deposited and deposited on the electrolytic chamber and the downstream water line in the electrolytic generation operation described above, and if necessary, the positive electrode A batch type electrolytic operation is performed. In the present invention, the batch type electrolytic operation is referred to as a batch type cleaning operation.

  In starting the reverse polarity batch type cleaning operation, the electrolyzed water is retained in each electrolysis chamber, and the electrolysis operation is started with the reverse polarity obtained by inverting the polarity of the electrode during the electrolysis generation operation. In the reverse polarity batch cleaning operation, the electrolytic chamber on the anode side is converted into the electrolytic chamber on the cathode side and the electrolytic chamber on the cathode side is converted into the electrolytic chamber on the anode side during the electrolysis generation operation. Electrolytically generated alkaline water is generated in the electrolysis chamber, and synchronously generated acidic water is generated synchronously in the electrolysis chamber that was the electrolysis chamber on the cathode side. Each of the electrolyzed water produced is of a batch type and has high electrolysis efficiency. Therefore, the electrolyzed water has a high removal function against the scale in a short time and without wasting much electrolyzed water. Water is produced.

  The electrolyzed water having a high removal function with respect to the scale dissolves and removes the scale deposited and deposited in the electrolysis chamber and the subsequent outflow pipes 32a and 32b, and cleans these parts. The electrolytically generated alkaline water that has flowed out to the outflow pipe 32a is drained through the discharge port of the drainage pipe 36b, and the degenerated acidic water that has flowed out to the outflow pipe 32b is drained through the drainage of the outflow pipe 36b.

  In this electrolytic operation method, after the reverse polarity batch cleaning operation is completed, a positive polarity batch cleaning operation in which the polarity of the electrode is reversed can be further added. As a result, both the electrolytic chambers and the outflow pipes 32a, 32b and the like on the downstream side can be more accurately washed.

  In the above-described reverse polarity batch-type cleaning operation and positive polarity batch-type cleaning operation, after the batch-type electrolysis is performed for a predetermined time, the state in which the electrolyzed water in the electrolytic chamber is retained is maintained for a predetermined time. Also good.

  FIG. 7 shows an embodiment of a batch cleaning operation in the electrolytic operation method according to the present invention. The batch type cleaning operation employs an embodiment in which a reverse polarity batch type cleaning operation is first performed, and then a positive polarity batch type cleaning operation is performed. Depending on the hardness of the raw water used, the reverse polarity batch type cleaning operation is performed. The operation is repeated a plurality of times, and the positive batch cleaning operation is performed a plurality of times.

  When starting the reverse polarity cleaning operation, the polarity of the electrode is reversed and the supply of the electrolyzed water to each electrolysis chamber is stopped and the electrolyzed water stays in each electrolysis chamber. Energize the chamber electrode and perform reverse polarity batch cleaning operation. When the reverse polarity batch-type cleaning operation elapses for a predetermined time, each electrolytically generated water generated in each electrolysis chamber is discharged, and the reverse polarity batch-type cleaning operation is completed. Subsequently, a positive batch cleaning operation is performed.

  When starting a positive batch cleaning operation, the polarity of the electrode is reversed, the supply of the electrolyzed water to each electrolysis chamber is stopped, and the electrolyzed water stays in each electrolysis chamber, A positive batch cleaning operation is performed by energizing the electrodes in each electrolytic chamber. When the positive batch cleaning operation elapses for a predetermined time, each electrolytically generated water generated in each electrolysis chamber is discharged, and the positive batch cleaning operation ends. The electrolyzed water generating apparatus waits until the electrolysis generating operation is started by the consumer.

  In the cleaning operation of this embodiment, in the region where the hardness of the raw water is less than 150 ppm, the reverse polarity batch type cleaning operation is pattern A (twice cleaning operation), and the positive polarity batch type cleaning operation is pattern A (one time). In the region where the hardness of the raw water is 150 ppm or more, the reverse polarity batch cleaning operation is set to pattern B (5 cleaning operations), and the positive polarity batch cleaning operation is set to pattern B (2 times). Thereby, the batch type washing | cleaning driving | operation corresponding to the area where the hardness of raw | natural water differs can be performed.

  In this embodiment, a means for converting the hardness of the raw water from the electrolytic current value of the raw water is adopted. The measured electrolysis current value of the raw water is converted into electrical conductivity using the graph shown in FIG. 9 (a), and the converted electrical conductivity is further converted into a graph shown in FIG. 9 (b). Converted into hardness. Based on the converted hardness, the amount of scale generated in the electrolysis chamber is estimated, and the number of batch cleaning operations with a reverse polarity and the number of positive batch cleaning operations are set.

  In this embodiment, when the raw water has a hardness of less than 150 ppm, the reverse polarity batch cleaning operation is set to 2 times, and the positive polarity batch cleaning operation is set to 1 time. When the raw water has a hardness of 150 ppm or more, The reverse polarity batch cleaning operation is set to 5 times, and the positive polarity batch cleaning operation is set to 2 times. The graph of FIG. 9C shows the consumption of the electrode when the raw water is less than 150 ppm in hardness and the batch cleaning operation is performed three times, and when the raw water is the hardness of 150 ppm and more and the batch cleaning operation is performed seven times ( Min), drainage (L), and power consumption (Wh).

  In the batch type cleaning operation of this embodiment, if the current value exceeding the specified electrolytic current value exceeds a certain time during the batch type cleaning operation, one batch type cleaning is completed at that point. As a result, the cleaning operation is stopped, and the state in which the electrolytically generated water is retained in each electrolytic chamber is maintained until the set batch type cleaning operation time.

  In batch-type cleaning operation, if the electrolysis current value rises too much during batch-type cleaning, the electrolyzed water and electrolyzed water in the electrolysis chamber will be in a heated state, and resin parts such as spacers that make up the electrolytic cell May be deformed to cause a decrease in function, water leakage from the electrolytic cell, and a decrease in the lifetime of the electrolytic cell. In this embodiment, this problem is addressed.

  The electrolyzed water generating apparatus that is the object of the cleaning operation of this embodiment employs an assembly 10A of electrode plate units 10 shown in FIG. 6, and a plurality of pairs of electrolysis formed by a plurality of pairs of electrode plates 10d and 10e. A room is provided. The electrolyzed water generating apparatus includes a total of five electrode plates 10d and 10e. However, when a voltage is simultaneously applied to the five electrode plates 10d and 10e at the start of electrolysis operation, an excessive inrush current is generated in the electrolysis chamber. There is a fear.

  In the present embodiment, in order to cope with such a problem, means for increasing the number of energized electrodes in a stepwise manner is employed when the electrolysis operation is started. FIG. 8 shows the current generated in the electrolytic chamber when a 12 V DC voltage is applied to the electrode plate in a state where electrolyzed water having a salt concentration of 0.2 wt% is supplied to the electrolytic chamber at a flow rate of 700 mL / sec. An experiment to measure the behavior was attempted.

  Experiment 1 measures the behavior of the current generated in the electrolytic chamber when voltage is simultaneously applied to the five electrode plates 10e1, 10d1, 10e2, 10d2, and 10e3. In Experiment 1, the inrush current is 27A. I'm getting results.

  Experiment 2 measures the behavior of the current generated in the electrolytic chamber when voltage is first applied to the four electrode plates 10e1, 10d1, 10d2, and 10e3, and then voltage is applied to one electrode plate 10e2. In Experiment 2, an experimental result with an inrush current of 20 A was obtained.

  In Experiment 3, voltage is first applied to the four electrode plates 10e1, 10d1, 10d2, and 10e3, then voltage is applied to one electrode plate 10e2 and voltage application to the two electrode plates 10d2 and 10e3 is interrupted. Then, the behavior of the current generated in the electrolytic chamber when a voltage is applied to the two electrode plates 10d2 and 10e3 is measured. In Experiment 3, an experimental result with an inrush current of 18A was obtained.

  In the electrolyzed water generating apparatus, assuming that there is much use in the daytime and almost no use at midnight, one day (24 hours) is a time zone for performing the electrolysis generation operation and a time for performing the cleaning operation. It is divided into bands and managed by a 24-hour timer that can measure 24 hours. However, when the accumulated time of the electrolysis generation operation in the time zone for performing the electrolysis generation operation reaches a certain time, it is necessary to perform the cleaning operation on the assumption that the scale generated in the electrolysis chamber has reached the limit. . It is a nuisance for consumers to suddenly enter a batch-type cleaning operation during a time period during which an electrolytic generation operation is performed. In this embodiment, this problem is addressed.

  In this embodiment, the batch cleaning operation timing is controlled by a 30-minute timer that measures 30 minutes and a 60-minute timer that measures 60 minutes. The type cleaning operation is performed at a time set in the time zone of the cleaning operation (for example, 12:00 at midnight).

  In this embodiment, the 30-minute timer measures the accumulated time required for the electrolysis operation in the time zone in which the electrolysis generation operation is performed, and when the accumulated time reaches the set time (30 minutes), the cleaning operation time zone It functions to issue a command to perform a cleaning operation at. In addition, the integration time for the scale generated in the electrolysis chamber to reach the limit is set to 60 minutes, and the 60 minute timer measures the integration time required for the electrolysis operation in the time zone for performing the electrolysis generation operation. When the time reaches 60 minutes, the subsequent electrolytic generation operation is stopped, and a command to perform a batch cleaning operation is performed.

  In this case, the cleaning lamp attached to the operation panel A1 is turned on when the integration time of the 60-minute timer reaches 50 minutes. Thereby, the consumer can recognize that the cleaning operation is near by visually confirming the lighting of the cleaning lamp. In this case, the consumer can perform the batch-type cleaning operation manually under arbitrary judgment. In the electrolyzed water generating apparatus, batch cleaning operation is automatically performed when the lighting time of the cleaning lamp reaches a set time. Thereby, the trouble which a consumer gives can be reduced. The consumer can wait for the time when the batch-type cleaning operation ends to start the electrolysis generation operation of the electrolyzed water generation apparatus.

  For the 24-hour timer employed in this embodiment, the time measured by the 24-hour timer is displayed on the operation panel A1, and the time displayed by the 24-hour timer is the current time. If the time is different from the time, the time of the 24-hour timer can be corrected to the current time.

  In the electrolyzed water generator, the salt water supply pump E is used to prepare the electrolyzed water, and the number of strokes (salt water supply stroke) of the salt water supply pump E (for example, in the range of 30 to 60 times / minute). By controlling the above, dilute salt water (electrolyzed water) having a predetermined concentration is obtained. For this reason, in the said electrolyzed water production | generation apparatus, when it continues for a fixed time in the state which the salt water supply stroke frequency increased extremely, the means to stop an electrolysis operation | movement can be taken. In this embodiment, it is estimated that the scale has adhered and accumulated in the electrolytic chamber from the number of times of the salt water supply stroke, and the batch type cleaning operation is controlled.

  In this embodiment, the control device stores the number of strokes of the salt water supply stroke at the start of the initial operation, and when the number of strokes reaches 2.1 times the number of initial strokes, the salt water immediately after continuing further When it is determined that cutting occurs, a cleaning warning is displayed and / or the cleaning operation is stopped.

  In this embodiment, the control device determines that scale deposition has occurred in the electrolytic cell at the point in time when the batch cleaning operation has continued for 1 hour, and then displays a cleaning warning and then continues. Then, the batch cleaning operation is performed, and the batch cleaning operation is stopped when the number of strokes reaches three times the number of initial strokes.

  By taking such scale adhesion determination, it is possible to improve the life of the electrodes and the diaphragm that constitute the electrolysis chamber, and it is possible to shorten the time required for removal (cleaning) of the scale that adheres and accumulates. . In addition, it is not necessary to open the electrolytic cell D in order to check the scale that has adhered and deposited, and the time for confirming the scale can be shortened. It is possible to shorten the electrolytic operation time of the generator.

  In the electrolysis operation of the electrolyzed water generator, when performing reverse electrolysis operation in which the polarity of the electrode is reversed, in order to reverse the polarity of the electrode, a large load is applied to the electrode, and when the load is repeatedly applied, Life is shortened early. Therefore, also in the electrolytic operation method of the present invention, it is required to reduce the polarity reversal (polarity switching) of the electrodes as much as possible. In addition, in the batch cleaning operation, the generated electrolyzed water does not continuously flow into the outflow pipe and the like, and therefore, the scale that adheres and accumulates in the outflow pipe or the like cannot be easily removed. There is a fear, and it is necessary to increase the number of reverse-polarity batch cleaning operations and positive-polarity batch cleaning operations. The present embodiment addresses such problems.

  In the present embodiment, the reverse polarity flowing water type cleaning operation is performed prior to the reverse polarity batch type cleaning operation employed in the present invention. If reverse-polar water-flow cleaning operation is performed prior to reverse-polar batch cleaning operation, a large amount of scale that adheres to and accumulates in the electrolysis chamber, outflow pipe, etc. before performing reverse-polar batch cleaning operation Thus, the load on the subsequent reverse polarity batch cleaning operation and the positive polarity batch cleaning operation can be reduced. This can reduce the number of reverse-polarity batch cleaning operations and positive-polarity batch cleaning operations, reduce the number of electrode polarity changes, and improve the electrode life. it can.

  In the electrolyzed water generating device, when the electrolysis operation stop button is pressed, the control device stops applying the voltage to the electrodes, stops driving the salt water supply pump, delays several seconds, and turns on the water supply valve. Closed control is performed. Thereby, while the closing of the water supply valve is delayed, the electrolyzed water in the electrolysis chamber is expelled by the supplied raw water, thereby preventing the electrolytic cell from being damaged due to the electrolyzed water. The stop timing of the control is shown in FIG.

  In the control for stopping the electrolysis operation of the electrolyzed water generation apparatus, raw water is retained in each electrolysis chamber of the electrolysis tank, and in this state, it waits until the next electrolysis operation is commanded. For this reason, when starting the next electrolysis operation, it takes time for the electrolyzed water to be supplied to each electrolysis chamber to fill the electrolysis chamber, and feedback control of the driving stroke (supply stroke) of the salt water supply pump is performed. It takes time and a considerable amount of time is required until normal electrolytic operation is started. This embodiment addresses such a problem.

  In this embodiment, in order to cope with such a problem, when the electrolysis operation stop button is pressed, the control device stops applying the voltage to the electrode, delays several seconds, and stops the driving of the salt water supply pump. The control to close the water supply valve is performed. The stop timing of the control is shown in FIG. According to the control, the electrolyzed water is supplied to each electrolysis chamber in a state where no voltage is applied to the electrodes, and the electrolyzed water is supplied to each electrolysis chamber by closing the water supply valve. It will stay. For this reason, in the next electrolysis operation, the feedback control of the driving stroke of the salt water supply pump is performed in a short time, and the time required until the normal electrolysis operation is started can be shortened.

  In the electrolyzed water generating apparatus of this type, conventionally, a large water softener having a large water softening function is installed outside the main body of the electrolyzed water generating apparatus in order to soften the raw water. For this reason, it is necessary to perform piping work to install a water system pipeline between the main body of the device and a separate water softener, the piping work is complicated, and a large installation space is required for installing a large water softener. I was trying.

Since the electrolyzed water generating apparatus is equipped with a batch-type washing operation, the load on the water softener can be greatly reduced, and depending on the capability of the batch-type washing operation, the use of the water softener can even be abolished. it can. In this embodiment, paying attention to the fact that the load of the water softener is greatly reduced, compared with the conventional water softener in the middle of the raw water supply pipe line part 34a of the raw water supply mechanism 30B constituting the electrolyzed water generating device. Thus, an extremely small small water softener 35e is interposed. In other words, a configuration in which the small water softener 35e is built in the apparatus main body C is adopted.
For this reason, when installing the electrolyzed water generating device, it is not necessary to secure an installation space for separately installing the water softener, and complicated piping work of the water system pipe line with the separately installed water softener is not required. .

A ... Case, A1 ... Control panel, a1 ... Case body, a2 ... Front cover, B ... Electrical component, b1 ... Support plate, b2 ... Blower fan, b3 ... Air port, C ... Device body, D ... Diaphragm electrolytic cell , E ... salt water tank, F ... salt water supply pump, 10 ... electrode plate unit, 10A ... aggregate, 10a, 10b ... spacer, 10c ... diaphragm, 10d, 10e ... electrode plate (10d1, 10d2, 10e1, 10e2, 10e3) , 20 ... Housing, 21 ... Upper collar, 22 ... Lower collar, 23 ... Side spacer, 30A ... Salt water supply mechanism, 30B ... Raw water supply mechanism, 31 ... Electrolyzed water supply pipeline (31a, 31b), 32a 32b ... Outflow pipeline, 33 ... Salt water supply pipeline, 33a ... Upstream pipeline section, 33b ... Downstream pipeline section, 34 ... Main pipeline, 34a ... Raw water supply pipeline section, 34b ... Diluted water supply pipeline Part, 34c ... spout, 34d ... connection site, 5a ... water supply valve, 35b ... pressure reducing valve, 35c ... variable flow valve, 35d ... flow meter, 35e ... water softener, 36a ... three-way switching valve, 36b ... drain line.

Claims (6)

In the electrolyzed water generating apparatus provided with a diaphragm electrolyzer that continuously flows out electrolyzed water generated in each electrolyzed chamber supplied with dilute salt water as electrolyzed water, electrolyzed water supplied to each electrolyzed chamber After flowing water type electrolyzed water generating operation for flowing out electrolyzed water generated by electrolyzing the electrolyzed water, the electrolyzed water generating operation was retained in the electrolyzed chamber in a state where the polarity of the electrodes of each electrolyzed chamber was reversed. performed batch-type cleaning operation of the reverse polarity to clean the respective electrolysis chambers to drain reverse of the electrolytic water generated by electrolyzing the electrolytic water after the lapse of a predetermined time, then, by reversing the polarity of the electrodes A positive batch cleaning operation is performed in which the electrolyzed water generated by electrolyzing the electrolyzed water retained in each electrolysis chamber is discharged after a predetermined time and the electrolysis chamber is washed. A characteristic electrolytic operation method. In the batch cleaning operation, the time when the electrolysis current value of raw water used as electrolyzed water exceeds the set value is integrated, and the batch cleaning operation is stopped when the integrated time exceeds a predetermined time. 2. The electrolytic operation method according to claim 1 , wherein during the time until the predetermined time elapses, the electrolyzed water is not allowed to flow out of each electrolysis chamber but stay in the electrolysis chamber. Wherein in a batch type cleaning operation, claim electrolyzed water generating operation after reaching the predetermined time to stop the electrolysis operation, characterized in that each electrolyzed water has so as to residence predetermined time each electrolysis chamber 2. The electrolytic operation method according to 1. Prior to batch cleaning operation of the opposite polarity, electrolytic in an inverted state of the polarity of the aquatic growth During operation of the electrode, according to claim 1, characterized in that to perform the washing operation with flow- Electrolytic operation method. When stopping the electrolytic production run, first, to stop the application of a voltage to the electrodes of each electrolysis chamber, and delayed for a predetermined time, by stopping the supply of the write MitoHara water hitting by brine supply pump for supplying water, electrolysis operation method according to claim 1, characterized in that as you keep the state of being retained to be electrolytic water to the electrolyte chamber of the perforated diaphragm electrolyzer. In the case of employing the organic diaphragm electrolytic cell Ru including the electrolytic chamber pairs that are more formed on a plurality of pairs of electrodes, electrolytic aquatic forming operation, batch-type cleaning operation, or, electrolytic aquatic Naruun rolling and bar when starting pitch cleaning operation, electrolysis operation method according to claim 1, characterized in that it has to increase the energization electrode in stages.

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