JP2019099840A - Electrolytic water generator - Google Patents

Abstract

To prevent electrolytic water continuously poured from an electrolytic water generator from failing to satisfy required characteristics.SOLUTION: In an electrolytic water generator 10, a control device 60 controls to perform electrolytic pouring operation for electrolyzing water to be electrolyzed, in which raw water supplied from a raw water supply pipe 20 and an aqueous electrolyte solution supplied from an aqueous electrolyte solution supply pipe 30 are mixed, in an electrolytic cell 11 by applying a DC voltage to electrodes 12a, 12b by a power supply device 40, and pouring generated electrolytic water, and controls to stop the electrolytic pouring operation for a fixed time when continuous operation time for generating electrolytic water by the electrolytic pouring operation becomes equal to or longer than a predetermined time.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to an electrolyzed water production apparatus that produces electrolyzed water, and more particularly to an electrolyzed water production apparatus that produces slightly acidic electrolyzed water.

  Patent Document 1 discloses an invention of an electrolyzed water generating device that generates slightly acidic electrolyzed water. This electrolyzed water generating apparatus comprises an electrolytic cell provided with a pair of electrodes, a raw water supply pipeline for supplying raw water supplied from a water supply source such as water to the electrolytic cell, and sodium chloride in the raw water supplied to the electrolytic cell. It includes a sodium chloride aqueous solution addition pump that supplies sodium chloride aqueous solution from an aqueous solution storage tank, a hydrochloric acid aqueous solution pump that supplies aqueous hydrochloric acid to raw water from a hydrochloric acid aqueous solution storage tank, and a power supply that applies a DC voltage to a pair of electrodes. . When the electrolytic pouring operation is executed by this electrolyzed water generating apparatus, the water to be electrolyzed is a mixture of sodium chloride aqueous solution and hydrochloric acid aqueous solution supplied from sodium chloride aqueous solution addition pump and hydrochloric acid aqueous solution pump to raw water supplied from raw water supply pipeline. Is supplied to the electrolytic cell, and the water to be electrolyzed supplied to the electrolytic cell is electrolyzed by the DC voltage applied to the pair of electrodes from the power source, and the pH is 5.0 to 6.5, and the required chlorine concentration is 10 to 80 ppm It is poured out as slightly acidic electrolyzed water that satisfies the characteristics.

Unexamined-Japanese-Patent No. 5-237478

  In the electrolyzed water generating device of Patent Document 1 described above, when the electrolyzed water is continuously electrolyzed in the electrolytic cell to generate electrolyzed water by the electrolytic pouring operation, micro bubbles adhere to the electrode. There is a case where the generated electrolyzed water does not satisfy the above-mentioned required characteristics due to the like. An object of the present invention is to prevent electrolyzed water that is continuously poured out from meeting the required characteristics.

  In order to solve the above problems, the present invention provides an electrolytic cell provided with a pair of electrodes, a raw water supply pipeline for supplying raw water supplied from a water supply source to the electrolytic cell, and supplying an electrolytic aqueous solution to the electrolytic cell. The system comprises an aqueous electrolyte solution supply line, a power supply device for applying a DC voltage to the electrodes, and a control device for controlling the operation of the power supply device. The control device comprises a raw water supplied from the raw water supply line and an aqueous electrolyte solution supply line. The electrolytic water is mixed with the aqueous electrolyte solution supplied from the battery, and the electrolytic water is discharged by applying a direct current voltage to the electrodes by the power supply device in the electrolytic cell to execute the electrolytic pouring operation. The electrolyzed water generating device, wherein the control device is controlled to stop the electrolyzing operation for a predetermined time when the continuous operation time to generate electrolyzed water by the electrolyzing operation becomes equal to or more than a predetermined time. Electrolyzed water generator It is intended to provide.

  In the electrolyzed water generating apparatus configured as described above, if the continuous operation time for producing electrolyzed water by the electrolyzed water feeding operation becomes equal to or longer than a predetermined time, the produced electrolyzed water may not meet the required characteristics, but control Since the apparatus was controlled to stop the electrolytic pouring operation for a certain period of time when the continuous operation time for producing the electrolytic water by the electrolytic pouring operation is more than a predetermined time, the electrolytic water generated after stopping for a certain time is required again It became possible to meet the characteristics and prevent the discharge of electrolyzed water that did not meet the required characteristics.

  In the electrolyzed water generating apparatus configured as described above, the control device controls so that the raw water is supplied from the raw water supply pipeline to the electrolytic cell when the electrolysis of the water to be electrolyzed is stopped for a certain period of time. Is preferred. Moreover, in another embodiment, it is preferable to control the control device to supply raw water to the electrolytic cell from the raw water supply pipeline before temporarily stopping electrolysis of the water to be electrolyzed.

  In order to solve the above problems, in another embodiment of the present invention, an electrolytic cell provided with a pair of electrodes, a raw water supply pipeline for supplying raw water supplied from a water supply source to the electrolytic cell, and an electrolytic cell Electrolyte aqueous solution supply line for supplying the aqueous electrolyte solution to the raw water supplied to the water source, a power supply device for applying a DC voltage to the electrodes, and a control device for controlling the operation of the power supply device. Electrolyzed water generated by mixing raw water supplied from the above and electrolytic aqueous solution supplied from the aqueous electrolytic solution supply pipe is electrolysed by applying a DC voltage to electrodes in the electrolytic cell by the power supply device The electrolyzed water generating apparatus for performing an electrolytic pouring operation for pouring out water, wherein the control device executes the electrolytic pouring operation when the continuous operation time for producing the electrolytic water by the electrolytic pouring operation becomes equal to or more than a predetermined time. Set power when It is to provide an electrolytic water generation apparatus, characterized in that the control to raise at least one of the set voltage and.

  In the electrolyzed water generating apparatus configured as described above, if the continuous operation time for producing electrolyzed water by the electrolyzed water feeding operation becomes equal to or longer than a predetermined time, the produced electrolyzed water may not meet the required characteristics, but control The apparatus was controlled to increase the set current and set voltage when performing the electrolytic pouring operation when the continuous operation time for producing the electrolytic water by the electrolytic pouring operation becomes equal to or longer than the predetermined time, so the setting current and the setting are set. The electrolyzed water produced | generated in the state which raised the electric current came to satisfy | fulfill a required characteristic, and it was able to prevent that the electrolyzed water which does not satisfy | fill a required characteristic is poured out.

It is the schematic of an electrolyzed water generating apparatus. It is a block diagram of a control device. It is a table | surface which shows the electric current and voltage which were set with the hydrochloric acid density | concentration of electrolyte aqueous solution, M alkalinity of raw water, and the water temperature of raw water.

  Below, one Embodiment of the electrolyzed water generating apparatus of this invention is described with reference to an accompanying drawing. The electrolyzed water generating apparatus 10 of the present invention is for producing slightly acidic electrolyzed water by electrolyzing the water to be electrolyzed in the non-diaphragm electrolytic cell 11, and in particular, the pH is 5.0 to 6.5, and the effective chlorine concentration is It produces 10-80 ppm of slightly acidic electrolyzed water. The electrolyzed water generating apparatus 10 includes an electrolytic cell 11, a raw water supply pipe 20 for supplying raw water to the electrolytic cell 11, an electrolytic aqueous solution supply pipe 30 for supplying an electrolytic aqueous solution containing hydrochloric acid to the raw water, and electrodes of the electrolytic cell 11. A power supply device 40 for applying a DC voltage to 12a and 12b is provided.

  The electrolytic cell 11 is for electrolyzing the water to be electrolyzed. The electrolytic cell 11 is a one-chamber type non-diaphragm electrolytic cell, and the electrolytic cell 11 is provided with a pair of electrodes 12 a and 12 b. Connected to the electrolytic cell 11 are a raw water supply pipe line 20 for supplying raw water from a water supply source such as a water pipe and a pouring pipe line 13 for discharging the slightly acidic electrolyzed water generated in the electrolytic cell 11.

  A pressure reducing valve 21 and a water flow valve 22 are interposed in the raw water supply line 20. The raw water sent from the water supply source is reduced in pressure by the pressure reducing valve 21, and is supplied to the electrolytic cell 11 by opening the water flow valve 22. Further, a temperature sensor 23 and a flow meter 24 are interposed in the raw water supply pipeline 20, and the temperature sensor 23 detects the temperature of the raw water passing through the raw water supply pipeline 20, and the flow meter 24 measures the raw water supply pipeline. Detect the flow rate of raw water passing through 20. The raw water supply pipe 20 may be provided with an alkalinity measuring device to measure the M alkalinity of the raw water by the alkalinity measuring device.

  An aqueous electrolyte solution supply line 30 is connected to the raw water supply line 20. The aqueous electrolyte solution supply line 30 supplies an aqueous electrolyte solution from the aqueous electrolyte solution tank 31 to the electrolytic cell 11 through the raw water supply line 20. The aqueous electrolyte solution stored in the aqueous electrolyte solution tank 31 contains at least hydrochloric acid. In this embodiment, the saturated aqueous sodium chloride solution is prepared so as to have a predetermined concentration of hydrochloric acid. A delivery pump (delivery means) 32 is interposed in the aqueous electrolyte solution supply line 30, and the aqueous electrolyte solution in the aqueous electrolyte solution tank 31 passes through the aqueous electrolyte solution supply line 30 by the operation of the delivery pump 32, and a raw water supply line Sent to 20. The delivery pump 32 is a variable flow type pump, and the flow rate is adjusted by changing the rotational speed according to the number of strokes of the pump according to the pulse signal. As the electrolyte aqueous solution in the electrolyte aqueous solution tank 31, an electrolyte aqueous solution having a hydrochloric acid concentration different depending on the M alkalinity of the raw water is used. Specifically, when the M alkalinity of the raw water is 20 to 40 ppm, an electrolyte aqueous solution having a hydrochloric acid concentration of 0.8 wt% is used, and when the M alkalinity of the raw water is 40 to 60 ppm, an electrolyte aqueous solution having a hydrochloric acid concentration of 1.0 wt% When the M alkalinity of the raw water is 60 to 80 ppm, an electrolyte aqueous solution having a hydrochloric acid concentration of 1.2 wt% is used.

  The power supply device 40 applies a DC voltage to the electrodes 12 a and 12 b in the electrolytic cell 11 to electrolyze the water to be electrolyzed in the electrolytic cell 11. An ammeter 41 is connected between the power supply device 40 and the electrode 12a, and the ammeter 41 measures the current flowing from the power supply device 40 to the wiring connecting the electrode 12a, whereby the electrolytic current flowing in the electrolytic cell 11 It measures the A voltmeter 42 is connected between the electrodes 12a and 12b, and the voltmeter 42 measures the electrolytic voltage of the electrolytic cell 11 by measuring the voltage applied to the electrodes 12a and 12b.

  The electrolyzed water generating apparatus 10 includes an operation panel 50, and the operation panel 50 is provided with a display panel and operation buttons (both not shown). On the display panel, it is possible to display the temperature of the raw water detected by the temperature sensor 23, the current measured by the ammeter 41, the voltage measured by the voltmeter 42, the out-of-liquid state of the aqueous electrolyte solution in the aqueous electrolyte solution tank 31, and the like. Further, various operation buttons are used to perform a pouring operation (pouring button) of slightly acidic electrolyzed water, switching of display by a display panel, and input of M alkalinity of raw water and hydrochloric acid concentration of an aqueous electrolyte solution.

  As shown in FIG. 2, the electrolyzed water generating device 10 includes a control device 60, and the control device 60 includes a water flow valve 22, a temperature sensor 23, a flow meter 24, a delivery pump 32, a power supply device 40, and an ammeter. 41 are connected to the voltmeter 42 and the operation panel 50. The control device 60 includes a microcomputer (not shown), and the microcomputer includes a CPU, a RAM, a ROM, and a timer (all not shown) connected to one another via a bus.

  The control device 60 is provided with an electrolysis control program for executing an electrolysis pouring operation in which the ROM generates a slight acidic electrolyzed water continuously by electrolysis and pours out the ROM, as shown in FIG. The electrolysis control program is set according to the M alkalinity (alkalinity) of the raw water and the hydrochloric acid concentration of the aqueous electrolyte solution so that the set current and set voltage when electrolyzing the water to be electrolyzed satisfy the required characteristics of slightly acidic electrolyzed water It is done. The set current and set voltage of the electrolysis control program are set according to the temperature of the raw water as well as the alkalinity degree of the raw water and the hydrochloric acid concentration of the electrolyte aqueous solution. When the controller 60 executes the electrolytic pouring operation of the electrolysis control program, the raw water supplied from the raw water supply pipe 20 into the electrolytic cell 11 by opening the water flow valve 22 and the electrolytic aqueous solution delivered by the delivery pump 32 Water to be mixed is supplied, and the setting current is applied between the electrodes 12a and 12b in the electrolytic cell 11 by the power supply device 40, so that the measurement current of the ammeter 41 becomes the setting current. The flow rate of the electrolyte aqueous solution is controlled, and the water to be electrolyzed is electrolyzed to be a slightly acidic electrolyzed water and poured out from the pouring pipeline 13.

  An electrolysis pouring operation of an electrolysis control program for pouring out slightly acidic electrolyzed water in the electrolyzed water production apparatus 10 will be described. When the electrolyzed water generator 10 is installed, the alkaline control program of the control device 60 inputs the M alkalinity of the raw water at the installation location and the hydrochloric acid concentration of the aqueous electrolyte solution corresponding to the M alkalinity of the raw water by operating the various operation buttons. Keep it. When the operation button for pouring the operation panel 50 is pressed, the water flow valve 22 is opened, and the raw water of the water supply source is supplied to the electrolytic cell 11 through the raw water supply pipeline 20. Further, as described above, in order to satisfy the required characteristics of slightly acidic electrolyzed water, the M alkalinity of the raw water input in advance, the hydrochloric acid concentration of the electrolytic aqueous solution, and the set current and set voltage based on the detected water temperature by the temperature sensor 23 The control device 60 controls the application of the voltage between the electrodes 12 a and 12 b by the power supply device 40 so that the voltage measured by the voltmeter 42 becomes the set voltage, and the current measured by the ammeter 41 The flow rate of the aqueous electrolyte solution is controlled by changing the rotational speed of the delivery pump 32 so as to achieve the set current.

  Electrolyzed water continuously supplied into the electrolytic cell 11 is electrolyzed by a direct current flowing from the power supply 40 to the electrodes 12a and 12b, and chlorine ions become hypochlorous acid on the anode side and sodium on the cathode side. Sodium hydroxide and hydrogen gas are generated by the reaction of ions and water. Further, sodium hydroxide generated on the cathode side is neutralized by hydrochloric acid contained in the water to be electrolyzed, and the pH of the generated electrolyzed water as a whole becomes 5.0 to 6.5. Thus, the electrolyzed water continuously generated by the electrolyzed water generating apparatus 10 becomes a slightly acidic electrolyzed water having a pH of 5.0 to 6.5 and an effective chlorine concentration of 10 to 80 ppm. There is.

  In the electrolyzed water generating apparatus 10, micro bubbles adhere to the electrodes 12a and 12b when electrolyzed water is continuously electrolyzed in the electrolytic cell 11 by the electrolytic pouring operation to generate slightly acidic electrolyzed water. The pH of the produced electrolyzed water may not meet the required characteristics due to In the electrolyzed water generating apparatus 10, the control device 60 stops the electrolyzing operation for a predetermined time, for example, 10 seconds, when the continuous operation time for producing electrolyzed water by the electrolyzing operation is 20 minutes or more as the predetermined time. It controlled so. Thereby, the electrolyzed water produced | generated by electrolytic pouring operation came to satisfy | fill a required characteristic, and it was able to prevent that the electrolyzed water which does not satisfy | fill a required characteristic is poured out.

  Moreover, in such an electrolyzed water generating apparatus 10, the control device 60 stops the electrolyzing operation for a predetermined time because the continuous operation time to generate electrolyzed water by the electrolyzing operation is 20 minutes or more as a predetermined time. During the operation, the water flow valve 22 may be opened for a predetermined time, for example, for 3 minutes, and the raw water may be controlled to be supplied from the raw water supply pipe 20 to the electrolytic cell 11. In this case, when the electrolytic pouring operation is stopped, opening the water flow valve 22 for a predetermined time and repeating the electrolytic pouring operation may be repeated.

  Moreover, in the electrolyzed water generating apparatus 10 of this other embodiment, the control apparatus 60 opens the water flow valve 22 as fixed time for 5 seconds, and stops a raw water supply pipe, before stopping an electrolytic pouring operation for fixed time. Raw water may be supplied from the passage 20 to the electrolytic cell 11, and control may be performed so as to stop the electrolytic pouring operation for a predetermined time for 10 seconds. In this case, the raw water is supplied from the raw water supply line 20 to the electrolytic cell 11 by opening the water flow valve 22 for a fixed time for 5 seconds before stopping the electrolytic pouring operation for a fixed time; The stopping operation may be repeatedly performed for 10 seconds with a fixed time.

  Furthermore, the other embodiment of the electrolyzed water generating device 10 for the purpose of preventing that the electrolyzed water continuously poured out does not satisfy the required characteristics is a pair of electrodes 12a and 12b as in the above-described embodiment. , A raw water supply pipeline 20 for supplying raw water supplied from a water supply source to the electrolytic bath 11, and an aqueous electrolyte solution supply pipe 30 for feeding an aqueous electrolyte solution to the raw water supplied to the electrolytic bath 11 And a power supply 40 for applying a DC voltage to the electrodes 12 and 12b, and a controller 60 for controlling the operation of the power supply 40. The controller 60 controls the raw water supplied from the raw water supply line 20 and the aqueous electrolyte solution. An electrolyzed water generated by applying a direct current voltage to the electrodes 12a and 12b by the power supply device 40 in the electrolytic cell 11 by mixing the water to be electrolyzed mixed with the electrolytic aqueous solution supplied from the supply pipeline 30 Water is to run the electrolytic dispensing operation to dispense. In the electrolyzed water generating apparatus 10, when the continuous operation time for producing electrolyzed water by the electrolytic pouring operation becomes equal to or longer than the predetermined time, the control device 60 performs at least the setting current and the setting voltage when executing the electrolytic pouring operation. On the other hand, control was performed to raise the set voltage by 10% one hour later. By controlling in this manner, the generated electrolyzed water can meet the required characteristics, and it can be prevented that the electrolyzed water that does not satisfy the required characteristics is poured out. In addition, it is not limited to raising the set voltage by 10% as a predetermined rate after 1 hour with a predetermined time, and instead of the set voltage, increase the set current by 1% with a predetermined rate after 1 hour. Alternatively, both of the set voltage and the set current may be controlled to be increased by 10% as a predetermined ratio after one hour with the predetermined time. Also, the time and rate of increase are not limited to the above.

  In the electrolyzed water generating apparatus 10 configured as described above, when a DC voltage is applied to the electrodes 12a and 12b in the electrolytic cell 11 by the power supply apparatus 40, the power supply apparatus 40 to the electrodes 12a due to an abnormal state such as an overcurrent. , 12b, the controller 60 controls the flow rate of the delivery pump 32 to increase so that the current measured by the ammeter 41 becomes the set current. When the DC voltage is applied to the electrodes 12a and 12b by the power supply device 40 after the abnormal state such as the overcurrent is eliminated, the electrolytic solution in the electrolytic water in the electrolytic cell 11 is often sent by the delivery pump 32 as described above. After that, since a large amount of electrolyte is contained, an overcurrent flows between the electrodes 12a and 12b in the electrolytic cell 11, and an abnormality in which the overcurrent flows is repeated. Therefore, when the DC voltage is not applied from the power supply 40 to the electrodes 12a and 12b due to an abnormal state such as an overcurrent, the control device 60 stops the operation of the delivery pump 32, and the abnormal state such as the overcurrent is eliminated. After that, when the DC voltage is applied to the electrodes 12a and 12b by the power supply device 40, the control is performed such that the flow rate of the delivery pump 32 is started from a low state. As a result, it is not possible to repeat an abnormality in which an overcurrent flows. Further, the control device 60 controls the power supply device 40 to apply a DC voltage again to the electrodes 12 and 12b after a lapse of 2 minutes as a predetermined time after detecting the overcurrent, but after 2 minutes, a voltmeter If the measured voltage 42 does not rise to a predetermined pressure, the control device 60 determines that the power supply device 40 has a failure and displays that the power supply device 40 has a failure on the display panel of the operation panel 50.

  In the electrolyzed water generating apparatus 10 of this embodiment, the set voltage and set current for electrolysis of the water to be electrolyzed are not only the M alkalinity of the raw water but the hydrochloric acid concentration of the electrolyte aqueous solution, but also the temperature of the raw water. However, as shown in FIG. 3, when the temperature of the raw water is lower than 5 ° C. and higher than 30 ° C., the set voltage and the set current are not defined, and the temperature of the raw water is higher than 5 ° C. When the temperature is low and the temperature is higher than 30 ° C., even if the water to be electrolyzed is electrolyzed, there is a possibility that the electrolyzed water satisfying the required characteristics may not be generated. Moreover, in this electrolyzed water generating apparatus 10, when the flow rate of the raw water is lower or higher than the set flow rate, even if the water to be electrolyzed is electrolyzed with the set voltage and set current, there is a possibility that the electrolyzed water satisfying the required characteristics may not be generated. There is. Thus, when the temperature of the raw water detected by the temperature sensor 23 is generated outside the set range by electrolysis, or the flow rate of the raw water detected by the flow meter 24 is out of the set range. When producing by electrolysis, it is made to pour out in the state which warned that the required characteristic may not be satisfied on the display panel.

 DESCRIPTION OF SYMBOLS 10 ... Electrolyzed water production apparatus, 11 ... Electrolysis tank, 12a, 12b ... Electrode, 20 ... Raw water supply pipeline, 30 ... Electrolyte aqueous solution supply pipeline, 31 ... Electrolyte aqueous solution tank, 40 ... Power supply apparatus, 60 ... Control apparatus.

Claims (4)

An electrolytic cell provided with a pair of electrodes;
A raw water supply line for supplying raw water supplied from a water supply source to the electrolytic cell;
An aqueous electrolyte solution supply line for supplying an aqueous electrolyte solution to the electrolytic cell;
A power supply device for applying a DC voltage to the electrodes;
And a controller for controlling the operation of the power supply device.
The control device is configured to use, in the electrolytic cell, the water to be electrolyzed by mixing the raw water supplied from the raw water supply pipe and the aqueous electrolyte solution supplied from the aqueous electrolytic solution supply pipe by the power supply device to the electrode An electrolyzed water generating apparatus that executes an electrolyzed pouring operation of pouring out electrolyzed water generated by electrolyzing by applying a DC voltage,
The control device is controlled to stop the electrolytic pouring operation for a predetermined time when the continuous operation time to generate the electrolytic water by the electrolytic pouring operation is equal to or more than a predetermined time. . In the electrolyzed water generating apparatus according to claim 1,
The electrolyzed water control device characterized in that the control device controls so as to supply raw water to the electrolytic cell from the raw water supply pipeline while stopping the electrolyzing operation for a fixed time. In the electrolyzed water generating apparatus according to claim 1,
The electrolyzed water control device characterized in that the control device controls so as to supply raw water to the electrolytic cell from the raw water supply pipeline before stopping the electrolyzing operation for a predetermined time. An electrolytic cell provided with a pair of electrodes;
A raw water supply line for supplying raw water supplied from a water supply source to the electrolytic cell;
An aqueous electrolyte solution supply line for supplying an aqueous electrolyte solution to raw water supplied to the electrolytic cell;
A power supply device for applying a DC voltage to the electrodes;
And a controller for controlling the operation of the power supply device.
The control device is configured to use, in the electrolytic cell, the water to be electrolyzed by mixing the raw water supplied from the raw water supply pipe and the aqueous electrolyte solution supplied from the aqueous electrolytic solution supply pipe by the power supply device to the electrode An electrolyzed water generating apparatus that executes an electrolyzed pouring operation of pouring out electrolyzed water generated by electrolyzing by applying a DC voltage,
The control device is configured to raise at least one of a set current and a set voltage when performing the electrolytic pouring operation when the continuous operation time for generating the electrolyzed water by the electrolytic pouring operation becomes a predetermined time or more. An electrolyzed water generating device characterized by being controlled.

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