JP2009160533A - Electrolyzed water generator - Google Patents

Abstract

When an overcurrent is generated in an electrolytic current in an electrolytic cell 10 during an electrolytic operation, the overcurrent is instantaneously blocked and smoothly returned to a normal electrolytic operation without taking a long time.
When an overcurrent occurs in the electrolysis current during the electrolysis operation, the control device 30 temporarily stops the supply of the high-concentration salt water to the raw water, unlike the normal feedback control, and then the high-concentration salt water. The supply flow rate is gradually increased from the lowest supply flow rate within the range of the adjustable supply flow rate. As a result, the occurrence of overcurrent is eliminated instantaneously, and the electrolysis current value gradually increases by the subsequent control of the supply flow rate of the high-concentration salt water, and the electrolysis operation smoothly returns to the normal electrolysis operation.
[Selection] Figure 1

Description

  The present invention relates to an electrolyzed water generating apparatus.

As one type of electrolyzed water generating device, an electrolyzer that electrolyzes water to be electrolyzed containing a predetermined concentration of electrolyte, and a high concentration salt water supplied to the raw water supplied to the electrolyzer to contain an electrolyte of a predetermined concentration An electrolyzed water preparation mechanism for preparing electrolyzed water, current value detection means for detecting an electrolysis current value in the electrolytic cell during electrolysis operation, and the electrolysis current value detected by the current value detection means based on the electrolysis current value There is an electrolyzed water generating apparatus provided with a control device that controls the supply flow rate of the high-concentration salt water to the raw water and feedback-controls the electrolysis current value to the set electrolysis current value. In the electrolyzed water generation device of this type, it is intended to generate electrolyzed water having the set characteristics by always controlling the electrolysis current value in the electrolytic cell during electrolysis operation to the set electrolysis current value. (See Patent Document 1).
Japanese Patent Laid-Open No. 11-114565

  As described above, in the electrolyzed water generating device of this type, the supply flow rate of the high-concentration salt water to the raw water is controlled so that the electrolysis current value in the electrolysis tank during the electrolysis operation is always set to the electrolysis current value. Yes. For this reason, when restarting the electrolysis operation after stopping the electrolysis operation, the control device stores the supply flow rate of the high-concentration salt water with respect to the raw water in the previous electrolysis operation, and the control device restarts the electrolysis operation. The means for controlling the supply flow rate of the high-concentration salt water with respect to the raw water is adopted so that the supply flow rate is memorized from the beginning.

  For this reason, when preparing high-concentration salt water by newly adding salts in the salt water tank of the electrolyzed water preparation mechanism after the end of the previous electrolysis operation, based on the supply flow rate of the high-concentration salt water in the previous electrolysis operation If the supply flow rate of the high-concentration salt water with respect to the raw water is controlled, the supply flow rate of the high-concentration salt water may become excessive if the salt concentration is different. When the supply flow rate of the high-concentration salt water with respect to the raw water becomes excessive, a phenomenon occurs in which the electrolysis current value rises above the set electrolysis current value. Also, during the electrolysis operation, even when salt is newly added in the salt water tank to prepare high-concentration salt water and the salt concentration of the salt water becomes high, the electrolysis current value is more rapid than the set electrolysis current value. Ascending phenomenon occurs.

  In these cases, there is no problem if the power supply capacity of the power supply that applies current to each electrode of the electrolytic cell is large, but if there is not enough power supply capacity, an overcurrent exceeding the power supply capacity may flow. is there. Since the generation of overcurrent will give a large load to the power supply, the generation of overcurrent must be avoided. Further, when an overcurrent occurs, the power supply itself drops to protect the power supply itself. In this case, since the voltage drop is not detected in the normal feedback control, the control device increases the supply flow rate of the high-concentration salt water to the raw water in order to compensate for the current reduced by the voltage drop. For this reason, it takes a long time to return the electrolysis operation to the normal electrolysis operation under the set electrolysis current value. The object of the present invention is therefore to address such problems.

  The present invention relates to an electrolyzed water generating apparatus. An electrolyzed water generating apparatus to which the present invention is applied includes an electrolyzer that electrolyzes water to be electrolyzed containing a predetermined concentration of electrolyte, and high concentration brine is supplied to the raw water supplied to the electrolyzer to provide a predetermined concentration of electrolyte. Electrolyzed water preparation mechanism for preparing electrolyzed water containing, electrolysis current value in the electrolyzer during electrolysis operation, current value detection means for detecting electrolysis current value, and electrolysis current value detected by the current value detection means Is a type of electrolyzed water generator comprising a control device that controls the supply flow rate of the high-concentration salt water to the raw water and feedback-controls the electrolysis current value to a set electrolysis current value.

  Thus, in the electrolyzed water generating apparatus according to the present invention, the control device is based on the current value detected by the current value detecting means when the electrolysis current value is within a permissible range of fluctuation. Control the supply flow rate of the high-concentration salt water to the raw water, and if the electrolytic current value detected by the current value detecting means is an overcurrent value exceeding a permissible minute fluctuation range, The supply of the salt water to the raw water is temporarily stopped, and thereafter, the supply flow rate of the high-concentration salt water is controlled to gradually increase from the lowest supply flow rate within the range of the adjustable supply flow rate.

  In the electrolyzed water generating apparatus according to the present invention, a diaphragm piston type variable flow rate pump is used as a supply means for supplying the high-concentration salt water to the raw water from the salt water tank of the electrolyzed water adjusting mechanism, and the control device Is an overcurrent value that exceeds the permissible fluctuation range of the electrolysis current value detected by the current value detection means, the number of strokes per unit of the variable flow rate pump is reduced from the minimum number of strokes. Control that gradually increases can be performed.

  In the electrolyzed water generating apparatus according to the present invention, when an overcurrent occurs in the electrolysis current during the electrolysis operation, the control apparatus interrupts normal feedback control and temporarily stops the supply of high-concentration salt water to the raw water. However, since the electrolytic current value is an overcurrent value, control is performed to gradually increase the supply flow rate of the high-concentration salt water from the lowest supply flow rate within the range of the adjustable supply flow rate. For this reason, even if an overcurrent occurs during the electrolysis operation, the generation of the overcurrent is temporarily prevented, and the electrolysis current value gradually increases due to the subsequent control of the supply flow of the high-concentration salt water. In addition, the electrolytic current value does not rapidly increase, and the occurrence of overcurrent can be eliminated instantaneously.

  For this reason, the big load with respect to the power supply resulting from an overcurrent is eliminated instantly. Further, the control device does not control the supply flow rate of the high-concentration salt water with respect to the raw water in order to compensate for the current decreased due to the voltage drop. Therefore, the electrolysis operation is performed normally under the set electrolysis current value. The electrolytic operation can be smoothly resumed without requiring a long time.

  The present invention relates to an electrolyzed water generating apparatus. An electrolyzed water generating apparatus according to the present invention includes an electrolytic cell for electrolyzing water to be electrolyzed containing a predetermined concentration of electrolyte, and a high concentration salt water supplied to the raw water supplied to the electrolytic cell and containing a predetermined concentration of electrolyte. An electrolyzed water preparation mechanism for preparing electrolyzed water, a current value detecting means for detecting an electrolysis current value in the electrolytic cell during electrolysis operation, and a high value for the raw water based on the electrolysis current value detected by the current value detecting means. It is an electrolyzed water production | generation apparatus provided with the control apparatus which controls the supply flow volume of concentration salt water, and feedback-controls the electrolysis current value to the set electrolysis current value.

  In the present invention, when an overcurrent is generated in the electrolysis current during the electrolysis operation, the supply flow rate of the high-concentration salt water to the raw water is appropriately controlled, and the generation of the overcurrent is instantaneously stopped and set. It promptly returns to normal electrolysis operation under electrolysis current. FIG. 1 schematically shows an electrolyzed water generating device according to an embodiment of the present invention.

  The electrolyzed water generating device is configured to include a diaphragm type electrolytic cell 10, an electrolyzed water preparation mechanism 20, and a control device 30. The diaphragm-type electrolytic cell 10 is known per se, and the cell body 11 is divided into a pair of compartments by a diaphragm 12, and electrodes 13a and 13b are arranged in each compartment. The compartments are formed in the electrolysis chambers R1 and R2. Branch portions of the electrolyzed water supply conduit 14 for supplying the electrolyzed water are connected to the upstream side portions of the electrolyzing chambers R1 and R2 of the electrolytic cell 10, and the electrolyzing chambers R1 and R2 are connected to the electrolyzing chambers R1 and R2. Upstream outlet conduits 15a1 and 15b1 for extracting electrolytically generated water are connected to the downstream portion, respectively. The upstream outlet conduits 15a1 and 15b1 are connected to the downstream outlet conduits 15a2 and 15b2 via the flow path switching valve 16, respectively.

  In the electrolysis operation in the electrolyzed water generating apparatus, during the electrolysis operation, the polarity of each electrode 13a, 13b of each electrolysis chamber R1, R2 is periodically reversed and the electrolysis operation is continued, so that each electrode 13a, 13b Control is performed to switch the flow path switching valve 16 in synchronism with the reversal of polarity, and the connection relationship of the upstream derivation pipelines 15a1, 15b1 to the downstream derivation pipelines 15a2, 15b2 is switched.

  With this configuration, one of the downstream outlet conduits 15a2 and 15b2 is, for example, a dedicated outlet for the electrolytically generated acidic water, and the other 15b2 of each downstream outlet conduit 15a2 and 15b2 is, for example, electrolytically generated. Derived pipeline dedicated to alkaline water. The control device 30 controls the periodic reversal of the polarity of each electrode 13a, 13b and the switching operation of the flow path switching valve 16 synchronized with the reversal of the polarity.

  The electrolysis operation of the electrolyzed water generating apparatus is comprehensively controlled by the control device 30. In the electrolysis operation, a predetermined voltage is applied from the power source 31 to each of the electrodes 13a and 13b, and a predetermined electrolysis current is set. The electrolyzed water supplied into the electrolysis chambers R1 and R2 of the electrolyzer 10 is electrolyzed in the electrolysis chambers R1 and R2 of the electrolyzer 10.

  During the electrolysis operation, the electrolyzed acidic water produced in one electrolysis chamber R1 is led out from the downstream outlet conduit 15a2 dedicated to the electrolyzed acidic water, and electrolysis is performed after the polarities of the electrodes 13a and 13b are reversed. The electrolytically generated alkaline water generated in the chamber R1 is led out from the outlet line 15b2 dedicated to the electrolytically generated alkaline water. Further, during the electrolysis operation, the electrolyzed alkaline water produced in the other electrolysis chamber R2 is led out from the downstream outlet conduit 15b2 dedicated to the electrolyzed alkaline water, and the polarities of the electrodes 13a and 13b are reversed. Thereafter, the electrolytically generated acidic water generated in the electrolytic chamber R2 is led out from the outlet conduit 15a2 dedicated to the electrolytically generated acidic water.

  During this time, the value of the electrolytic current generated in the electrolytic cell 10 is measured as the value of the current flowing through the wiring by the ammeter 33 connected to the shunt 32 interposed in the middle of the wiring connecting the power source 31 and the electrode 13b. The The current value measured by the ammeter 33 corresponds to an electrolytic current value generated in the electrolytic cell 10. The electrolytic current value detected by the ammeter 33 is output to the control device 30 as an electrolytic current value detection signal.

  The electrolyzed water preparation mechanism 20 that constitutes the electrolyzed water generating apparatus includes a salt water tank 21 that stores high-concentration salt water, a supply line 22 that supplies high-concentration salt water in the salt water tank 21, and a middle of the supply line 22. The supply flow line 22 is connected to the raw water supply line 17 connected to the electrolyzed water supply line 14. The salt water tank 21 contains water and a large amount of salt. In the salt water tank 21, high-concentration salt water having a predetermined concentration such as saturated saline is prepared. The high-concentration salt water stored in the salt water tank 21 is supplied into the raw water supply pipe 17 by driving the supply pump 23 so that the flow-rate high-concentration salt water controlled by the control device 30 is supplied. In the present embodiment, a diaphragm piston type variable flow rate pump is employed as the supply pump 23.

  The supply pump 23 alternately opens and closes the suction check valve and the discharge check valve by one reciprocating operation of the diaphragm piston, discharges a predetermined amount of high-concentration salt water, and supplies the raw water flowing in the raw water supply pipe 17. It works as much as possible. The supply pump 23 discharges about 0.06 cc of high-concentration salt water with a piston stroke of about 0.5 to 1.0 mm, and the number of strokes per unit time is in the range of 0 to 720 times / minute (spm). Thus, the discharge flow rate of the high-concentration salt water can be adjusted in the range of 0 to 40 cc / min. The control device 30 adjusts the supply flow rate of the high-concentration salt water to the raw water by controlling the number of strokes per unit time of the supply pump 23.

  The salt water tank 21 contains high-concentration salt water that is consumed in one electrolysis operation. For this reason, in the next electrolysis operation, the salt water tank 21 is replaced with a salt water tank containing newly prepared high-concentration salt water.

  The raw water used in the present embodiment is obtained by subjecting tap water to water softening and filtration, and a water softener 18a and a filter 18b are interposed in the middle of the raw water supply pipe 17, so that the water softener The tap water softened and filtered by the filter 18 b and the filter 18 b is supplied as raw water to the electrolyzed water supply pipe 14 through the raw water supply pipe 17. The high-concentration salt water having a constant flow rate supplied into the raw water supply pipe 17 is mixed with the raw water flowing in the raw water supply pipe 17 to become a diluted salt water having a constant concentration. The diluted salt water is salt water having a set constant concentration and is water to be electrolyzed by the electrolyzed water generating device. The electrolyzed water contains a set amount of electrolyte and has a set constant electrical conductivity.

  The control device 30 comprehensively controls the electrolysis operation of the electrolyzed water generating device. During the electrolysis operation, a constant voltage is applied between the electrodes 13a and 13b in the electrolytic cell 10 to set a set electrolysis current. Electrolyze the electrolyzed water under During the electrolysis operation, based on the electrolysis current value detected by the ammeter 33, the supply flow rate of the high-concentration salt water to the raw water is adjusted (the number of strokes of the supply pump is controlled), and the electrolysis current value is feedback-controlled.

  Thus, in the electrolyzed water generating apparatus, electrolyzed acidic water and electrolyzed alkaline water having the set characteristics are continuously generated by electrolysis under the set electrolysis current, and the generated electrolyzed acidic water is generated. The water is led out from the downstream lead-out line 15a2, which is a lead-out line dedicated to the electrolytically generated acidic water, and the generated electrolytically generated alkaline water is a downstream lead-out pipe that is a lead-out line dedicated to the electrolytically generated alkaline water. Derived from the path 15b2.

  Thus, in the said electrolyzed water generating apparatus, the supply flow rate of the high concentration salt water with respect to raw | natural water is controlled so that the electrolysis current value in the electrolysis tank 10 in electrolysis operation may always become the set electrolysis current value. . For this reason, in the conventional electrolyzed water generating apparatus, when the electrolysis operation is resumed after the electrolysis operation is temporarily stopped, the control device 30 stores the supply flow rate of the high-concentration salt water with respect to the raw water in the previous electrolysis operation, and performs control. The apparatus 30 employs a means for controlling the supply flow rate of the high-concentration salt water with respect to the raw water so that the supply flow rate stored in the device 30 is maintained from the beginning when the electrolysis operation is resumed.

  For this reason, when a high concentration salt water is prepared by newly adding salts in the salt water tank 21 of the electrolyzed water preparation mechanism after the last electrolysis operation, the supply flow rate of the high concentration salt water in the previous electrolysis operation is adjusted. Based on the control of the supply flow rate of the high-concentration salt water with respect to the raw water, the supply flow rate of the high-concentration salt water may become excessive due to the difference in salt concentration. When the supply flow rate of the high-concentration salt water with respect to the raw water becomes excessive, a phenomenon occurs in which the electrolysis current value in the electrolytic cell 10 rises from the set electrolysis current value. In the middle of the electrolysis operation, when salt is newly added to the salt water tank 21 to prepare high-concentration salt water and the salt concentration of the salt water becomes high, the electrolysis current value in the electrolytic cell 10 is set. Phenomenon that rises more rapidly than the electrolytic current value occurs.

  In these cases, when the power supply capacity of the power supply 31 for applying a current to the electrodes 13a and 13b of the electrolytic cell 10 is large, there is no problem, but if the power supply capacity is not sufficient, the power supply capacity is exceeded. Overcurrent may flow. Since generation of overcurrent gives a large load to the power supply 31, generation of overcurrent must be avoided.

  Further, when an overcurrent occurs, the power source 31 drops the voltage to protect itself. In this case, since the voltage drop is not detected in the feedback control, the control device 30 controls the supply flow rate of the high-concentration salt water to the raw water in order to compensate for the current reduced by the voltage drop. For this reason, it takes a long time to return the electrolysis operation to the normal electrolysis operation under the set electrolysis current value. The present invention addresses such problems.

  In the electrolyzed water generating apparatus according to the present invention, when the electrolysis current value is within a permissible range of fluctuation, the control device 30 can generate high-concentration salt water based on the electrolysis current value detected by the ammeter 33. When the supply pump 23 is driven to control the supply flow rate of the raw water, and the electrolysis current value detected by the ammeter 33 is an overcurrent value exceeding a permissible minute fluctuation range, the supply pump 23 is temporarily stopped to interrupt the supply of the high-concentration salt water to the raw water, and then the supply pump 23 is re-driven to restart the supply of the high-concentration salt water to the raw water. When the drive of the supply pump 23 is re-driven, control is performed to gradually increase from the minimum stroke number within the range of stroke numbers that can be adjusted for the drive of the supply pump. As a result, the supply flow rate of the high-concentration salt water to the raw water gradually increases.

  FIG. 2 (a) shows the relationship between the number of strokes per unit time when the supply pump 23 is driven and the discharge flow rate (supply flow rate) of high-concentration salt water, and FIG. 2 (b) shows the number of strokes (high concentration). The relationship between the supply flow rate of salt water to the raw water) and the electrolysis current value is shown. FIGS. 3A and 3B show the relationship between the supply flow rate of high-concentration salt water, the voltage, and the electrolysis current at the initial stage when electrolysis is resumed in a conventional electrolyzed water generator.

  The number of strokes of the supply pump 23 shown in FIG. 2 (a) is shown in two upper and lower stages, but the number of strokes (%) shown in the upper stage is adjusted between 0 and 720 (spm) for the supply pump 23. Therefore, the adjustment range is equally divided into 100 for the number of strokes, and the maximum number of adjustments is 100% for the number of strokes 720 spm. The stroke number (spm) shown in the lower part is the number of strokes corresponding to the upper part stroke number (%). The graph shown in FIG. 2 (b) shows a phenomenon in which an electrolysis current of about 2A flows even when the number of strokes (spm) is 0. This phenomenon is adopted for preparing high-concentration salt water. This is due to the electrolyte contained in the raw water (tap water).

  When the electrolysis operation of the conventional electrolyzed water generator is resumed, the supply flow rate of the high-concentration salt water to the raw water is controlled based on the previous supply flow rate of the high-concentration salt water. FIG. 3A shows an example of an electrolysis operation in which an electrolysis operation is performed under electrolysis conditions set to an electrolysis voltage of 12 V and an electrolysis current of 10 A, and a power source having a large power source capacity is adopted as the power source 31. is there. Since the inside of the electrolytic cell 10 is filled with raw water when the electrolytic operation is restarted, the water filled in the electrolytic cell 10 and the salt concentration in sequence for a predetermined time from the start of the electrolytic operation. A dilute aqueous solution of electrolyzed water that increases the amount of feedback is the reference for feedback control. For this reason, at the time of resuming the electrolysis operation, the control device 30 is set in the electrolytic cell 10 by increasing the supply flow rate of the high-concentration salt water for a predetermined time from the start of the electrolysis operation due to the feedback control. Control to fill with electrolyzed water with salt concentration.

  In such control, since there is a time difference between the supply of the high-concentration salt water to the raw water and the time to fill the electrolyzer 10 with the electrolyzed water having a set salt concentration, the supply flow rate of the high-concentration salt water to the raw water is temporarily Excessive current will be generated in the electrolytic cell. FIG. 3 (a) shows the behavior of the supply flow rate, voltage and electrolysis current of the high-concentration salt water in this case. Further, in this case, there is no voltage drop because the power supply capacity of the power supply 31 is sufficient, and although an overcurrent occurs, a problem caused by the voltage drop does not occur.

   FIG. 3B also shows a case where the electrolysis operation is performed under the electrolysis conditions set to an electrolysis voltage of 12 V and an electrolysis current of 10 A, but an example of electrolysis operation in which a power source having a small power source capacity is adopted as the power source 31. is there. Since the inside of the electrolytic cell 10 is filled with raw water when the electrolytic operation is restarted, the water filled in the electrolytic cell 10 and the salt concentration in sequence for a predetermined time from the start of the electrolytic operation. A dilute aqueous solution of electrolyzed water that increases the amount of feedback is the reference for feedback control. For this reason, at the restart of the electrolysis operation, the control device 30 is set in the electrolyzer 10 by increasing the supply flow rate of the high-concentration salt water for a predetermined time from the start of the electrolysis operation due to the feedback control. Control to fill with electrolyzed water with salt concentration.

  In such control, since there is a time difference between the supply of the high-concentration salt water to the raw water and the time to fill the electrolyzer 10 with the electrolyzed water having a set salt concentration, the supply flow rate of the high-concentration salt water to the raw water is temporarily Excessive current will be generated in the electrolytic cell 10. In this case, a voltage drop occurs due to the overcurrent, and in the feedback control based on the overcurrent, the decrease in the electrolysis current value due to the decrease in the supply flow rate of the high-concentration salt water is not sufficient, and the set electrolysis current value is reached. In order to control, it is necessary to repeatedly perform feedback control, and it takes a considerable time to control to a set electrolytic current value. In this case, the load on the power supply 31 due to the overcurrent is further increased.

  The present invention aims to address these problems, and in the present invention, the electrolytic current value detected by the current value detection means is an overcurrent value that exceeds a permissible minute fluctuation range. In this case, the supply of the high-concentration salt water to the raw water is temporarily stopped, and thereafter, the supply flow rate of the high-concentration salt water is gradually increased from the lowest supply flow rate within the range of the adjustable supply flow rate.

  In one embodiment of the control defined in the present invention, the electrolysis operation is resumed by appropriately controlling the supply flow rate of the high-concentration salt water to the raw water for a predetermined time from the start of electrolysis restart, unlike the normal feedback control. The occurrence of overcurrent in the electrolytic cell in the early stage of the time is greatly suppressed, or the state is almost completely eliminated, and the problem caused by the occurrence of overcurrent during the electrolytic operation is solved. FIG. 4 shows the relationship between the supply flow rate of high-concentration salt water, the voltage, and the electrolysis current in the electrolysis operation. The electrolysis operation is a case where the electrolysis operation is performed under electrolysis conditions set to an electrolysis voltage of 12 V and an electrolysis current of 10 A.

  Since the inside of the electrolytic cell 10 is filled with raw water when the electrolytic operation is restarted, the water filled in the electrolytic cell 10 and the salt concentration in sequence for a predetermined time from the start of the electrolytic operation. A dilute aqueous solution of electrolyzed water that increases the amount of feedback is the reference for feedback control. For this reason, at the restart of the electrolysis operation, the control device 30 is set in the electrolyzer 10 by increasing the supply flow rate of the high-concentration salt water for a predetermined time from the start of the electrolysis operation due to the feedback control. Control to fill with electrolyzed water with salt concentration.

  In the electrolyzed water generating apparatus according to the present invention, the control device 30 stores the supply flow rate of the high-concentration salt water with respect to the raw water in the previous electrolysis operation as a memory value, and feedback is performed based on the stored value when the electrolysis operation is resumed. If an overcurrent occurs in the electrolytic cell 10 during the control, the supply of the high-concentration salt water to the raw water is temporarily stopped, and then the supply flow rate of the high-concentration salt water can be adjusted. The control is performed so as to gradually increase from the lowest supply flow rate within the range. For this reason, in the control, the overcurrent once generated in the electrolytic cell 10 is quickly eliminated, and in the subsequent control, the generation of the overcurrent in the electrolytic cell 10 is prevented while It is possible to quickly shift to the set electrolytic current value that targets the electrolytic current value.

  Moreover, in the control prescribed | regulated by this invention, since the overcurrent which generate | occur | produces in the electrolytic cell 10 is eliminated rapidly, the big load with respect to the power supply resulting from an overcurrent is eliminated instantly. Further, the control device does not control the supply flow rate of the high-concentration salt water with respect to the raw water in order to compensate for the current decreased due to the voltage drop. Therefore, the electrolysis operation is performed normally under the set electrolysis current value. It is possible to quickly return to the electrolysis operation.

It is a schematic block diagram which shows the electrolyzed water generating apparatus which is one Embodiment of this invention. Graph (a) showing the relationship between the number of strokes per unit time when the supply pump is driven and the supply flow rate (discharge flow rate) of high-concentration salt water, and the number of strokes (corresponding to the supply flow rate for raw water of high-concentration salt water) It is a graph (b) which shows the relationship with an electrolysis electric current value. The graph (a) in the case where the power supply capacity showing the relationship between the supply flow rate of high-concentration salt water, the voltage, and the electrolysis current in the initial stage of resuming electrolysis of the conventional electrolyzed water generator is large, and the case where the power capacity is small It is a graph (b). It is a graph which shows the relationship between the supply flow volume of the high concentration salt water in the initial stage at the time of the electrolysis restart of the electrolyzed water generating apparatus which concerns on this invention, a voltage, and an electrolysis current.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Separator-type electrolytic cell, R1, R2 ... Electrolytic chamber, 11 ... Tank main body, 12 ... Diaphragm, 13a, 13b ... Electrode, 14 ... Electrolyzed water supply conduit, 15a1, 15b1 ... Upstream outlet conduit, 15a2, 15b2 ... downstream outlet conduit, 16 ... flow switching valve, 17 ... raw water supply conduit, 18a ... water softener, 18b ... filter, 20 ... electrolyzed water preparation mechanism, 21 ... salt water tank, 22 ... high concentration Salt water supply line, 23 ... supply pump, 30 ... control device, 31 ... power source, 32 ... shunt, 33 ... ammeter (electrolytic current detection means).

Claims (2)

Electrolysis tank for electrolyzing electrolyzed water containing an electrolyte of a predetermined concentration, and electrolyzed water preparation for preparing electrolyzed water containing an electrolyte of a predetermined concentration by supplying high-concentration salt water to raw water supplied to the electrolyzer A mechanism, current value detection means for detecting an electrolysis current value in the electrolytic cell during the electrolysis operation, and a supply flow rate of the high-concentration salt water to the raw water based on the electrolysis current value detected by the current value detection means The electrolyzed water generating device includes a control device that feedback-controls the electrolysis current value to the set electrolysis current value. When the electrolysis current value is within a permissible range of fluctuation, A small fluctuation range in which the supply flow rate to the raw water of the high-concentration salt water is controlled based on the current value detected by the current value detection unit, and the electrolytic current value detected by the current value detection unit is allowed Over If the current value, the supply of the high-concentration salt water to the raw water is temporarily stopped, and then the supply flow rate of the high-concentration salt water is gradually increased from the lowest supply flow rate within the range of the adjustable supply flow rate. An electrolyzed water generator characterized by performing control. 2. The electrolyzed water generating device according to claim 1, wherein a diaphragm piston type variable flow rate pump is used as a supply means for supplying high-concentration salt water to the raw water from a salt water tank of the electrolyzed water adjusting mechanism, When the electrolytic current value detected by the current value detecting means is an overcurrent value exceeding a permissible minute fluctuation range, the number of strokes per unit time of the variable flow rate pump is determined from the minimum number of strokes. An electrolyzed water generating apparatus characterized by performing control to gradually increase.

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