JP2008073603A - Electrolysis operation method of electrolytic water generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the insufficient collection of electrolytic water for users when the time for consuming electrolytic water staying in a storage tank is short and its consumption is large, that is, at the operation peak of collecting the electrolytic water. <P>SOLUTION: An electrolysis operation method is for an electrolytic water generator which comprises an electrolytic cell 11 electrolyzing supplied water to be electrolyzed and the storage tank 12 to which electrolytic water generated in the electrolytic cell 11 is supplied through an introduction pipe line 14, and starts electrolysis operation when a prescribed amount of the electrolytic water staying in the storage tank 12 is consumed to supply the prescribed amount of electrolytic water into the storage tank 12. In the electrolysis operation method, when the time for consuming the electrolytic water staying in the storage tank 12 is short and its consumption is large, the electrolysis operation is carried out so as to increase the supply flow rate of the electrolytic water to the storage tank 12 in comparison with when the time for consuming it is long and its consumption is small. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electrolytic operation method for an electrolyzed water generating apparatus.

  As one type of electrolyzed water generating device, an electrolyzer for electrolyzing supplied electrolyzed water, and a storage tank for supplying electrolyzed water generated in the electrolyzer through an introduction pipe line, the storage tank There is an electrolyzed water generating device which starts electrolysis operation when a predetermined amount of electrolyzed water stagnating therein is consumed and supplies a predetermined amount of electrolyzed water into the storage tank (Patent Document 1). See). In the electrolyzed water generating apparatus of this type, various methods can be adopted as a method for supplying electrolyzed water into the storage tank, in other words, an electrolysis operation method.

For example, in the electrolyzed water generating apparatus proposed in Patent Document 1 described above, the accumulated electrolyzed water deteriorates with time due to the length of time in which electrolyzed water stays in the storage tank. In consideration of this, electrolysis in the storage tank in the time zone (daytime) when the consumption time of the electrolyzed water that is stagnant is high and the consumption is high (daytime) and the time zone when the consumption time is slow and the consumption amount is low (nighttime) Electrolytic operation that supplies different amounts of accumulated water, and reduces the amount of electrolytically generated water that accumulates in the storage tank at night, reducing the amount of electrolytically generated water that is consumed when consumed Is used as much as possible, and a method of suppressing the occurrence of problems caused by the reduced function of electrolytically generated water has been adopted.
JP 2000-5750 A

  The present invention is based on the premise that the occurrence of problems caused by deterioration in the function of electrolyzed water to be consumed is suppressed as much as possible. That is, it is intended to eliminate the shortage of electrolytically generated water for consumers at the peak operating time of electrolytically generated water.

  The present invention relates to an electrolytic operation method for an electrolyzed water generating apparatus, and an electrolyzer that electrolyzes water to be electrolyzed, and a reservoir in which electrolyzed water generated in the electrolyzer is supplied through an introduction pipe. An electrolysis of a type provided with a tank, wherein when a predetermined amount of electrolyzed water stagnating in the storage tank is consumed, an electrolysis operation is started and a predetermined amount of electrolyzed water is supplied into the storage tank. The water generator is the target of electrolytic operation.

  Therefore, in the electrolytic operation method according to the present invention, when the consumption time of the electrolyzed water staying in the storage tank is fast and the consumption amount is large, the electrolysis water staying in the storage tank is consumed. Compared to a case where the time is slow and the amount of consumption is small, the electrolysis operation is performed to increase the supply flow rate of the electrolyzed water to the storage tank. In the electrolysis operation method, in the electrolysis operation in which the supply flow rate of electrolyzed water to the storage tank is increased, the electrolysis operation is performed in a state where the electrolysis conditions are constant or changed by increasing the supply flow rate of the water to be electrolyzed to the electrolysis tank. Can be.

  In the electrolytic operation method according to the present invention, an upper water level sensor, a neutral water level sensor, and a lower water level sensor, which are water level sensors for detecting the water level of electrolyzed water stagnating in the storage tank, are installed in the storage tank. When the water level of the electrolyzed water stagnating in the storage tank continuously moves from the upper position to the lower position through the neutral position, the consumption time of the electrolyzed water stagnating in the storage tank is fast. Therefore, it can be determined that the consumption is large.

  Further, in the electrolytic operation method according to the present invention, the use form of the electrolyzed water stagnating in the storage tank is a time zone in which the electrolyzed water consumption time is fast and the consumption is large, and the electrolyzed water consumption time. In the former time zone, an electrolytic operation is performed in which the supply flow rate of electrolyzed water to the storage tank is increased from the supply flow rate in the latter time zone. Can be.

  In the electrolytic operation method according to the present invention, when the consumption time of the electrolyzed water stagnating in the storage tank is early and the consumption amount is large, the consumption time of the electrolyzed water stagnating in the storage tank is slow. In comparison with the case where the consumption is small, the electrolytic operation is performed to increase the supply flow rate of the electrolyzed water to the storage tank. For this reason, it is possible to sufficiently cope with the collection of electrolytically generated water by consumers even at the operation peak of the electrolytically generated water.

  Therefore, in the electrolysis operation method, in the electrolysis operation in which the supply flow rate of the electrolyzed water to the storage tank is to be increased, the function is reduced as the supply flow rate of the electrolyzed water is increased. However, such a decline in the function of electrolyzed water is compared to the function of the electrolyzed water supplied to the storage tank when the electrolyzed water consumption time is slow and the storage time in the storage tank is long. It is a decline. In the electrolytically generated water stored in the storage tank, there is a phenomenon that the function of the electrolytically generated water decreases with time. There is no great difference from the function of water, and there is almost no risk of insufficient function when using the electrolyzed water.

  The electrolytic operation method according to the present invention can be applied to any type of electrolyzed water generating device of a diaphragm type electrolyzed water generating device and a non-diaphragm type electrolyzed water generating device. The operation method can be applied to the case where any electrolytically generated acidic water or electrolytically generated alkaline water is collected in the diaphragm type electrolytic water generating apparatus. In this case, the present invention is also applied to the case where electrolyzed water containing an electrolysis auxiliary agent is employed as electrolyzed water to produce strongly acidic electrolyzed acidic water and strongly alkaline electrolyzed alkaline water. As described above, the present invention is also applied to the case where weakly alkaline alkaline ionized water is produced by employing electrolyzed water containing no electrolysis auxiliary. In addition, the diaphragm type electrolyzed water generating device is applied when collecting substantially neutral or similar electrolyzed water containing sodium hypochlorite or the like.

  The present invention relates to an electrolytic operation method for an electrolyzed water generating apparatus. FIG. 1 shows a diaphragm-type electrolyzed water generating apparatus that can employ the electrolytic operation method according to the present invention. The electrolyzed water generating apparatus basically has the same configuration as a conventionally known diaphragm-type electrolyzed water generating apparatus, and includes a diaphragm electrolyzer 11 and a first storage tank 12 that stores electrolyzed acidic water. A second storage tank 13 for storing electrolytically generated alkaline water, a first introduction pipe 14 dedicated for electrolytically generated acidic water for introducing electrolytically generated acidic water generated in the diaphragm electrolytic cell 11 into the first storage tank 12, And the 2nd introduction pipe line 15 for exclusive use of electrolysis generation alkaline water which introduces electrolysis generation alkaline water generated in diaphragm membrane electrolysis tank 11 into the 2nd storage tank 13 is provided.

  The diaphragm electrolysis tank 11 includes a pair of electrolysis chambers R1 and R2 formed by partitioning the tank body 11a with a diaphragm 11b, and supply lines for supplying electrolyzed water to the electrolysis chambers R1 and R2. A branch pipe portion 11c is connected. Also, outflow conduits 11d and 11e for flowing out the electrolyzed water are connected to the electrolysis chambers R1 and R2. The outflow pipes 11 d and 11 e are connected to the first and second introduction pipes 14 and 15 via the flow path switching valve 16. The flow path switching valve 16 functions to switch the connection state of the outflow pipe lines 11d and 11e with respect to the introduction pipe lines 14 and 15 by switching operation. In the diaphragm electrolytic cell 11, during electrolysis, a voltage is applied to the electrodes 11 f and 11 g disposed in the electrolysis chambers R 1 and R 2, and the electrolysis chambers R 1 and R 2 are determined depending on whether the applied voltage is positive or negative. Are set in the anode-side electrolysis chamber and the cathode-side electrolysis chamber. In addition, when the electrolysis has passed for a predetermined time, the polarity of the voltage applied to each electrode 11f, 11g is reversed, and the relationship between the anode side electrolysis chamber and the cathode side electrolysis chamber of each electrolysis chamber R1, R2 is related. Be changed. Further, the flow path switching valve 16 performs switching operation according to the positive / negative reversal of the polarity of the applied voltage to the electrodes 11f and 11g, and changes the connection relationship of the outflow pipe lines 11d and 11e to the introduction pipe lines 14 and 15. .

  In the electrolyzed water generating apparatus, water to be electrolyzed is supplied to the electrolysis chambers R1 and R2 of the diaphragm electrolyzer 11, and a constant voltage is applied to the electrodes 11f and 11g so that the electrolysis water is reduced. The diaphragm is electrolyzed. For example, when the electrolysis chamber R1 is an anode-side electrolysis chamber and the electrolysis chamber R2 is a cathode-side electrolysis chamber, electrolysis-generated acidic water is generated in the electrolysis chamber R1, and electrolysis-generated alkaline is generated in the electrolysis chamber R2. Water is produced. The electrolytically generated acidic water generated in the electrolysis chamber R1 is introduced and stored in the first storage tank 12 through the first outflow pipe 11d, the flow path switching valve 16, and the first introduction pipe 14, and The electrolytically generated alkaline water generated in the electrolysis chamber R2 is introduced into the second storage tank 13 through the second outflow pipe 11e, the flow path switching valve 16 and the second introduction pipe 15 and stored therein. .

  In the diaphragm electrolytic cell 11, when electrolysis is continued for a long time, especially in the anode-side electrolysis chamber (electrolysis chamber R 1), calcium ions and the like contained in the electrolyzed water are precipitated as insoluble substances. The insoluble material thus deposited adheres as a scale to the inner peripheral wall, electrode and diaphragm of the anode-side electrolysis chamber. If a large amount of such scale is generated in the electrolytic chamber, the electrolysis efficiency is greatly impaired. Therefore, in order to prevent such a state from occurring, the anode-side electrolysis chamber and the cathode-side electrolysis chamber of each electrolysis chamber R1, R2 are prevented. Is periodically changed, for example, the electrolytic chamber R1 that was the anode side electrolytic chamber is changed to the cathode side, and the electrolytic chamber R2 that was the cathode side electrolytic chamber is changed to the anode side. .

  In order to change the relationship between the anode-side electrolysis chamber and the cathode-side electrolysis chamber of each electrolysis chamber R1, R2, as described above, the polarity of the voltage applied to each electrode 11f, 11g is reversed between positive and negative. As a result, the electrolysis chamber R1 that was the anode electrolysis chamber is changed to the cathode electrolysis chamber, and electrolysis generated alkaline water is generated in the electrolysis chamber R1, and the electrolysis chamber R2 that was the cathode electrolysis chamber is the anode side electrolysis chamber. By changing to an electrolysis chamber, electrolytically generated acidic water is generated in the electrolysis chamber R2. The electrolyzed alkaline water produced in the electrolysis chamber R1 dissolves insoluble material that has already been deposited slightly and causes it to flow out of the electrolysis chamber R1 and regulates the adhesion of the insoluble material as a scale to each part in the electrolysis chamber R1. To do.

  In the electrolyzed water generating apparatus, the flow path switching valve 16 is switched according to the change in the relationship between the anode side electrolysis chamber and the cathode side electrolysis chamber of each electrolysis chamber R1, R2, and the first outflow pipe 11d is connected to the second outlet 11d. The second outflow pipe 11e is connected to the first introduction pipe 14 and connected to the introduction pipe 15. Thereby, the electrolytically generated alkaline water generated in the electrolysis chamber R1 is introduced into the second storage tank 13 through the first outflow pipe 11d, the flow path switching valve 16 and the second introduction pipe 15, and the electrolysis chamber. The electrolytically generated acidic water generated in R2 is introduced into the first storage tank 12 through the second outflow pipe 11e, the flow path switching valve 16 and the first introduction pipe 14.

  The electrolysis operation of the electrolyzed water generating apparatus is to supply electrolyzed acidic water to the first storage tank 12 and store it in the same tank, and supply electrolyzed alkaline water to the second storage tank 13 and store it in the same tank. Is intended to be stored in. In the present embodiment, an upper water level sensor 17a, which is a water level sensor 17, 18 for detecting the level of electrolyzed water in each of the storage tanks 12, 13, is provided inside each of the first storage tank 12 and the second storage tank 13. 18a, neutral water level sensors 17b and 18b, and lower water level sensors 17c and 18c are installed.

  In each of the storage tanks 12 and 13, electrolytically generated acidic water or electrolytically generated alkaline water generated by performing an electrolysis operation with electrolyzed water at a constant supply flow rate under set electrolysis conditions is supplied, In the first storage tank 12, the electrolytically generated acidic water level reaches the installation position of the upper water level sensor 17a, and in the second storage tank 13, the electrolytically generated alkaline water level reaches the installation position of the upper water level sensor 18a. Yes.

  In the electrolyzed water generating device, the electrolyzed acidic water staying in the first storage tank 12 and the electrolyzed alkaline water staying in the second storage tank 13 are used in the first storage tank 12 as usage forms. The first form of use is mainly the use of the electrolytically generated acidic water that is stored and the secondary use of the electrolytically generated alkaline water that is stored in the second storage tank 13. The electrolytic generation that is stored in the first storage tank 12. A second usage pattern that mainly uses the electrolytically generated alkaline water that stays in the second storage tank 13, and the electrolytically generated acidic water that stays in the first storage tank 12. And the third usage mode mainly using the electrolytically generated alkaline water stagnating in the second storage tank 13, in other words, the electrolytically generated acidic water and the electrolytically generated alkaline water are used in substantially the same amount ( Consumption) It is the use form of three different embodiments.

  In the electrolysis operation in these three types of use of electrolyzed water, in the electrolysis operation in the first use mode, the water level position sensor 17 (each water level sensor 17a to 17c) installed in the first storage tank 12 is used. The detection operation function is enabled, and the electrolysis operation is performed with the detection operation function of the water level sensor 18 (the water level sensors 18a to 18c) disposed in the second storage tank 13 being disabled. Further, in the electrolysis operation in the second usage pattern, the detection operation functions of the position sensors 17a to 17c installed in the first storage tank 12 are invalidated, and the position sensors 18a to 18c disposed in the second storage tank 13 are invalidated. Electrolytic operation is performed with the detection operation function of Further, in the electrolytic operation in the third usage pattern, the detection operation function of each of the position sensors 17a to 17c disposed in the first storage tank 12 is made effective, and each of the position sensors 18a disposed in the second storage tank 13 is enabled. The electrolytic operation is performed with the detection operation function of ˜18c being effective.

  In the first usage pattern, the consumer collects the electrolytically generated acidic water that stays in the first storage tank 12 every time it is used. As a result, the level of the electrolytically generated acidic water stagnating in the first storage tank 12 gradually decreases, but when the level of the electrolytically generated acidic water reaches the installation position of the lower water level sensor 17c, the lower water level sensor 17c generates electrolytically. It is detected that the water level of the acidic water has reached the lower position, and this detection signal is output to a control device (not shown).

  The control device starts the electrolytic operation based on the detection signal. The electrolysis operation is basically a normal electrolysis operation under a set constant electrolysis condition and a constant supply flow rate of water to be electrolyzed, and the electrolytically generated acidic water into the first storage tank 12. Is supplied at a set normal supply flow rate. The electrolysis operation is continued until the level of the electrolyzed acidic water in the first storage tank 12 reaches the installation position of the upper water level sensor 17a, and when the level of the electrolyzed acidic water reaches the installation position of the upper water level sensor 17a, The upper water level sensor 17a detects this and outputs a detection signal to the control device.

  The control device stops the electrolysis operation based on the detection signal. During this time, the electrolyzed alkaline water generated simultaneously in the electrolysis operation is supplied to the second storage tank 13 regardless of the level of the electrolyzed alkaline water that remains, and the level of the electrolyzed alkaline water that remains is the upper water level. When the sensor 18a exceeds the installation position, it is discharged out of the second storage tank 13 through an overflow pipe (not shown).

  In the first usage pattern, the level of the electrolytically generated acidic water that remains in the first storage tank 12 during the collection of the electrolytically generated acidic water changes from the installation position of the upper water level sensor 17a to the installation position of the neutral water level sensor 17b. In this case, the control device determines that the electrolytically generated acidic water remaining in the first storage tank 12 is immediately used in large quantities. Then, the electrolysis operation is started to increase the supply flow rate of the electrolyzed acidic water into the first storage tank 12 as compared with the normal case. In the electrolysis operation, for example, a means for increasing the supply flow rate of the water to be electrolyzed to the diaphragm electrolyzer 11 as compared with the case of the normal electrolysis operation is adopted, and means for changing the electrolysis conditions as necessary is adopted. As a result, a large amount of electrolytically generated acidic water is quickly supplied into the first storage tank 12, and a large amount of electrolytically generated acidic water that remains in the first storage tank 12 is collected. Can cope with it.

  In the electrolytic operation in the second usage pattern, the electrolytically generated acidic water to be supplied in the electrolytic operation in the first usage pattern is replaced with the electrolytically generated alkaline water, and the storage tank to be supplied is the first storage tank. This is an embodiment in which the tank 12 is replaced with the second storage tank 13. In this case, the water level sensors 18a to 18c installed in the second storage tank 13 function. Thereby, a large amount of electrolytically generated alkaline water is quickly supplied to the second storage tank 13, and a large amount of electrolytically generated alkaline water stagnating in the second storage tank 13 is collected. It is possible to deal with it sufficiently.

  Further, in the electrolysis operation in the third usage mode, the supply control of the electrolytically generated acidic water in the electrolysis operation in the first usage mode into the first storage tank 12 and the electrolysis in the electrolysis operation in the second usage mode are performed. The supply control of the generated alkaline water into the second storage tank 13 is performed synchronously. In the electrolysis operation, the water level sensors 17a to 17c installed in the first storage tank 12 and the water level sensors 18a to 18c installed in the second storage tank 13 function together. In this case, a difference in consumption rate (consumption time) and consumption amount between the electrolytically generated acidic water stagnating in the first storage tank 12 and the electrolytically generated alkaline water stagnating in the second storage tank 13 naturally occurs. . For this reason, priority is given to the operation function of each water level sensor 17 and 18 which detected the continuous fluctuation | variation of the water level previously for the start timing of electrolysis operation. Thereby, even when a large amount of electrolytically generated acidic water stagnating in the first storage tank 12 is collected, or when a large amount of electrolytically generated alkaline water stagnating in the second storage tank 13 is collected. In addition, it can deal with consumers enough.

  On the other hand, in the electrolyzed water generating apparatus, depending on the installation location used, a time zone in which the electrolyzed water collection frequency is high and the consumption time is high, and a time zone in which the electrolysis water collection frequency is low and the consumption time is slow, May be almost fixed. For example, the former time band can include an activity time band from the start to the end of a work activity (day time band, day and night time band), and the latter time band can be the end of a job activity. Inactive time band (midnight time band) from start to start. In the electrolysis operation of such an electrolyzed water generating device, the supply flow rate of electrolyzed acidic water into the first storage tank 12 and / or the electrolyzed alkaline water to the second storage tank 13 in the former time zone. An electrolysis operation is performed in which the supply flow rate is increased as compared with a normal case. Further, in the latter time zone, the electrolysis operation is a normal case in which the supply flow rate of the electrolyzed acidic water into the first storage tank 12 and / or the supply flow rate of the electrolyzed alkaline water to the second storage tank 13 is normal. I do. As a result, when a large amount of electrolytically generated acidic water stagnating in the first storage tank 12 is collected and / or when a large amount of electrolytically generated alkaline water stagnating in the second storage tank 13 is collected. Can deal with consumers of the future.

  In addition, the electrolytic operation method according to the present invention can be implemented in the electrolytic operation method of the diaphragm-type electrolytic water generation apparatus as described above, as well as the electrolytic operation method of the diaphragm-type electrolytic water generation apparatus, and The present invention can also be applied to an electrolyzed water generating apparatus that employs electrolyzed water that does not contain an electrolysis auxiliary agent as electrolyzed water to generate weakly acidic electrogenerated acidic water and / or weakly alkaline electrogenerated alkaline water. .

It is a schematic block diagram of the electrolyzed water generating apparatus which implements the electrolytic operation method which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Separator membrane electrolytic cell, 11a ... Tank main body, 11b ... Separator membrane, 11c ... Supply line, 11d, 11e ... Outflow line, 11f, 11g ... Electrode, R1, R2 ... Electrolytic chamber, 12 ... First storage tank, DESCRIPTION OF SYMBOLS 13 ... 2nd storage tank, 14 ... 1st introduction pipeline, 15 ... 2nd introduction pipeline, 16 ... Flow path switching valve, 17, 18 ... Water level sensor, 17a, 18a ... Upper water level sensor, 17b, 18b ... Neutral Water level sensors, 17c, 18c ... downward water level sensors.

Claims (4)

An electrolytic cell for electrolyzing supplied electrolyzed water, and a storage tank for supplying electrolytically generated water generated in the electrolytic cell through an introduction pipe line, and the electrolytically generated water stagnating in the storage tank An electrolysis operation method for an electrolyzed water generating device that starts electrolysis operation when a predetermined amount is consumed and supplies a predetermined amount of electrolyzed water into the storage tank. When the consumption time of the generated water is fast and the amount of consumption is large, the amount of electrolytically generated water for the storage tank is lower than when the consumption time of the electrolytically generated water stagnating in the storage tank is slow and the amount of consumption is small. An electrolytic operation method for an electrolyzed water generating apparatus, wherein an electrolytic operation for increasing a supply flow rate is performed. 2. The electrolytic operation method for an electrolyzed water generating apparatus according to claim 1, wherein the electrolysis operation for increasing the supply flow rate of electrolyzed water to the storage tank increases the supply flow rate of water to be electrolyzed to the electrolyzer to satisfy electrolysis conditions. An electrolytic operation method for an electrolyzed water generating apparatus, wherein the electrolytic operation is performed in a constant or changed state. 3. The electrolytic operation method for an electrolyzed water generating device according to claim 1 or 2, wherein the storage tank includes an upper water level sensor, a neutral water level sensor, and a lower water level sensor for detecting a water level of electrolyzed water accumulated in the storage tank. And when the water level of the electrolyzed water stagnating in the storage tank continuously moves from the upper position through the neutral position to the lower position, the consumption time of the electrolyzed water stagnated in the storage tank is An electrolytic operation method for an electrolyzed water generating apparatus, characterized in that it is determined to be a case where the amount of consumption is fast and high. 3. The electrolytic operation method for an electrolyzed water generating device according to claim 1 or 2, wherein the form of use of electrolyzed water stagnating in the storage tank is a time zone where consumption time of electrolyzed water is fast and consumption is large. When the time zone of the electrolyzed water consumption is slow and the consumption amount is low, the supply flow rate of the electrolyzed water to the storage tank in the former time zone is higher than the supply flow rate in the latter time zone. An electrolytic operation method for an electrolyzed water generating apparatus, wherein the electrolysis operation is increased.

Images