JP4556711B2 - Electrolyzed water generating device and sink equipped with the same - Google Patents

Description

  The present invention relates to an electrolyzed water generating apparatus that electrolyzes raw water such as tap water and well water to generate alkaline ionized water and acidic ionized water, and a sink equipped with the same.

  In the electrolyzed water generator, the pH value of alkaline ionized water generated by electrolysis is measured by a pH sensor, and power control to the electrolyzer is performed according to the output signal level from the pH sensor. However, a part of the electrolysis current from the electrode plate during electrolysis becomes a stray current that goes around the pH sensor and affects its output level as noise, so it is necessary to minimize the influence of the stray current. .

  Therefore, a method has been proposed in which the pH sensor is surrounded by a conductor shielding wall so as not to be affected by the electric field from the electrode (see, for example, Patent Document 1).

  As shown in the schematic configuration diagram of the main body of the conventional electrolyzed water generating device in FIG. 10, an upper portion in the main body 51 of the electrolyzed water generating device has a water purification cartridge 52 for purifying the raw water and electrolyzing the purified raw water. Then, an electrolytic cell 53 for generating alkaline ionized water or acidic ionized water, and an operation display unit 54 for displaying the pH value of the generated alkaline ionized water or selecting and inputting a predetermined pH value desired by the user are arranged. Has been.

  A power supply unit 56 having a power cord 55 and a control unit 57 to which an operation display unit 54 is connected are attached to the lower part of the main body 51 to control the electrolytic voltage applied to the electrolytic cell 53.

  A water supply path 58 for supplying raw water is connected to a water purification cartridge 52, and a constant flow valve 59 for preventing excessive water pressure is disposed in the middle of the water supply path 58.

  Next, the water purification cartridge 52 is connected to the electrolysis tank 53 via a water passage 60, and a flow sensor 61 that detects the water flow and transmits it to the control unit 57, and an electrolysis auxiliary agent in the water passage 60. An addition cylinder 62 to be added to the raw water is attached.

  The inside of the electrolytic cell 53 is divided into two chambers by a diaphragm 63, and the water passage 60 is branched into two before the electrolytic cell and is connected to each chamber through an inlet 64 and an inlet 65. A check valve 66 and an electromagnetic valve 67 are installed on the upstream side of the branch, and a drain pipe 68 for discharging water in the electrolytic cell 53 is attached to the check valve 66.

  The inlet 64 is thicker than the inlet 65, and the amount of water flowing from the inlet 64 is fixed to be larger than the amount of water flowing from the inlet 65 (water volume ratio 3: 1 to 4: 1).

  The check valve 66 does not allow water to flow to the drain pipe 68 due to a water pressure difference during water flow. However, when the water flow is stopped, the water pressure difference disappears, so that water in the electrolytic bath 53 flows to the water drain pipe 68 side. It comes to be discharged at. At this time, the electromagnetic valve 67 is open.

  Each chamber in the electrolytic cell 53 contains an electrode 69 and an electrode 70. Usually, the electrode 69 generates alkaline ionized water on the negative side, and the electrode 70 generates acidic ionized water on the positive side. The

  A water discharge pipe 71 is connected to the electrode 69 side, and a drain pipe 72 is connected to the electrode 70 side, and the generated alkaline ionized water or acidic ionized water is discharged.

  A pH sensor 73 that detects the pH value of the generated alkaline ionized water is attached in the middle of the water discharge pipe 71, and the drain pipe 68 is connected to the drain pipe 72.

  In the above configuration, when water flow is started, raw water is introduced from the water supply channel 58 and purified by the water purification cartridge 52, and then the electrolytic auxiliary agent in the addition cylinder 62 is added through the water flow channel 60 and the electrolytic cell. 53.

  When the flow sensor 61 detects water flow and transmits it to the control unit 57, the control unit 57 applies a predetermined electrolytic voltage to the electrode plate 69 and the electrode plate 70 of the electrolytic bath 53.

  At this time, as described above, alkaline ion water is generated on the negative side of the electrode 69, and acidic ion water is generated on the positive side of the electrode 70.

  The generated alkaline ionized water is discharged from the discharge pipe 71, and the acidic ionized water is discharged from the drain pipe 72.

The pH value of the alkaline ionized water is detected by the pH sensor 73, the output voltage level from the pH sensor is converted by the control unit, the pH value of the generated alkaline ionized water is detected, and the detected pH value is detected. The alkaline ionized water having a predetermined pH value is generated by controlling the electrolysis voltage applied to the electrolytic cell 53 according to the above.
JP 9-33479 A

  However, in the conventional electrolyzed water generating device, a part of the electrolysis current flowing in the electrolytic cell during electrolyzed water generation is transmitted as a stray current to the pH sensor, and the pH sensor output voltage level is measured due to the influence. There was an error.

  As a result, in order to detect the accurate pH value of alkaline ionized water, the metal part of the electromagnetic valve of the water passage was connected to the negative terminal of the electrolytic cell as a method to suppress the effect of stray current. There are few parts that come into contact with the pH sensor, and there may be slight fluctuations in the signal output of the pH sensor.

  The present invention solves such a conventional problem, and an electrolyzed water generating device capable of always accurately detecting a pH value from a pH sensor during electrolysis and generating alkaline ionized water having a predetermined pH value, and the same The purpose is to provide a sink equipped with.

  In order to achieve the above object, the present invention provides an electrolytic cell that electrolyzes raw water to produce alkaline ionized water or acidic ionized water, a control unit that controls an electrolysis voltage applied to the electrolytic cell, A pH sensor for detecting the pH value of alkaline ionized water and acidic ionized water generated in the electrolytic cell, and introducing alkaline ionized water and acidic ionized water from the electrolytic cell to the pH sensor. In order to prevent the transmission of stray current from the electrolytic cell to the pH sensor, the ground unit of the electrolytic cell is directly in contact with the drainage flowing through the inside of the drainage channel through the predetermined side surface of the drainage channel. It is characterized by providing a grounding part.

  With this configuration, it is possible to achieve an effect that the pH value of the generated alkaline ionized water can be accurately measured by preventing transmission of stray current from the electrolytic cell during electrolysis.

  The present invention produces an effect that it is possible to provide an electrolyzed water generating device capable of accurately measuring the pH value of the generated alkaline ionized water and a sink equipped with the electrolyzed water generating device.

  Embodiments of the present invention include an electrolytic cell that electrolyzes raw water to generate alkaline ionized water or acidic ionized water, a control unit that controls an electrolytic voltage applied to the electrolytic cell, and discharges water in the electrolytic cell. PH sensor for detecting the pH value of alkaline ionized water or acidic ionized water generated in the electrolytic cell, and pH measurement for introducing alkaline ionized water or acidic ionized water from the electrolytic cell to the pH sensor A grounding portion that has a passage and directly contacts the drainage flowing through the drainage channel by passing the grounding unit of the drainage tank through a predetermined side surface of the drainage channel in order to prevent transmission of stray current from the electrolytic cell to the pH sensor. Is provided.

  Accordingly, it is possible to prevent the stray current from being transmitted from the electrolytic cell to the pH sensor during electrolysis, and thus to provide an electrolyzed water generating device capable of accurately detecting the pH value of the generated alkaline ionized water. Can do.

  In addition, an electrolytic cell that electrolyzes raw water to generate alkaline ionized water or acidic ionized water, and a control unit that controls an electrolytic voltage applied to the electrolytic cell, the alkaline ionized water generated in the electrolytic cell, It has a pH sensor that detects the pH value of acidic ion water and a pH measurement path that introduces alkaline ion water and acidic ion water from the electrolytic cell to the pH sensor. An on-off valve is arranged in the middle of the pH measurement path. In order to prevent transmission of stray current from the electrolytic cell to the pH sensor on the downstream side, a bent portion for bending a part of the pH measurement path to a predetermined height above and blocking water flow through the pH measurement path is provided. Also good.

  In this case, the generated alkali ions can shut off the water flow through the pH measurement path by an on-off valve attached in the middle of the pH measurement path and simultaneously block the transmission of stray current from the electrolytic cell during electrolysis. It is possible to provide an electrolyzed water generating apparatus capable of accurately detecting the pH value of water.

  In addition, an air introduction part that introduces air into the bending part above the bending part and blocks water flow through the pH measurement path by an air layer may be arranged, and an on-off valve may be provided in the middle of the air introduction path. .

  In this case, the on-off valve to the pH measurement path is closed, the on-off valve of the air introduction part is opened for a certain period of time, and the pH measurement path drain valve is closed to introduce air into the upper bent part and to drain the water on the pH measurement path. Electrostatic water generation that accurately detects the pH value of the generated alkaline ionized water and controls the electrolysis because the stray current transmission from the electrolyzer during electrolysis can be completely blocked by shutting off with the on-off valve and air layer An apparatus can be provided.

  If the electrolyzed water generator is incorporated in the sink, the usability in the kitchen can be greatly enhanced.

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

Example 1
As shown in the schematic diagram showing the overall structure of the sink equipped with the electrolyzed water generating device shown in Example 1 of FIG. 1, there is a sink 1 made of stainless steel, artificial marble, or the like. The main body 2 of the electrolyzed water generating apparatus made of plastic or stainless steel is installed. A water supply pipe 3 for supplying raw water (tap water, well water, etc.) to the main body 2 is attached so as to penetrate the side surface and the upper surface of the sink 1.

  The water supply pipe 3 is provided with a faucet 4 that is manually opened and closed by a user, and a water passage switching valve 5 is attached to the end of the water faucet 4 so that the user can switch the water passage switching valve 5. Thus, the raw water can be introduced into the main body 2 through the water supply channel 6.

  A water discharge path 7 is installed on the upper surface of the main body 2, and electrolyzed water (usually alkaline ionized water) electrolyzed in the main body 2 is discharged.

  On the other hand, a drainage channel 8 is attached to the lower part of the main body 2, and electrolyzed water (usually acidic ionized water) is also discharged.

  A power cord 9 is connected to the main body 2 to supply power necessary for electrolysis and the like.

  The raw water discharged from the water channel switching valve 5 as it is without being introduced into the main body 2 from the water supply pipe 3, the alkaline ion water discharged from the discharge channel 7, and the acidic ion water discharged from the drain channel 8 are the water tank of the sink 1. After passing through a drain pipe 13 having a sealed trap 12 for preventing odor backflow from 10 drain outlets 11, it is drained out of the sink 1.

  As shown in the schematic configuration diagram of the main body of the electrolyzed water generating apparatus shown in Example 1 in FIG. 2, a purified water cartridge 14 for purifying raw water and purified raw water are disposed in the upper part of the main body 2 of the electrolyzed water generating apparatus. The electrolytic cell 15 for generating alkaline ionized water or acidic ionized water by electrolyzing the water and the pH value of the generated alkaline ionized water are displayed, or a predetermined pH value desired by the user is selected and input. An operation display unit 16 is arranged.

  A power supply unit 17 having a power cord 9 and a control unit 18 connected to the operation display unit 16 are attached to the lower part of the main body 2 to control the energization to the electrolytic cell 15 and the applied electrolysis voltage. Yes.

  A water supply path 6 to which raw water is supplied is connected to the water purification cartridge 14, and a resistor such as an orifice is provided in the middle of the water supply path 6 in order to prevent excessive water pressure to the water purification cartridge 14 and the subsequent parts. A constant flow valve 19 is attached.

  The water purification cartridge 14 is connected to the electrolyzer 15 through a water passage 20, and the water passage 20 detects the water flow of raw water and transmits it to the control unit 18. A flow rate sensor 21 composed of an impeller system and the like, and an addition cylinder 22 for storing an electrolytic auxiliary agent such as calcium glycerophosphate and adding it to raw water to be passed are attached.

  The electrolytic cell 15 is divided into two chambers by a diaphragm 23, and each chamber contains an electrode 24 and an electrode 25. Usually, the electrode 24 is negative and alkaline ionized water is generated. Acidic ionic water is generated on the positive side.

  The water passage 20 is branched into two before the electrolyzer 15 and is connected to the lower side of each chamber through an inlet 26 and an inlet 27, and at the same time, the pH is measured through the lower drain valve 28. Connected to Road 33. The drain valve 28 is normally open to the drainage channel 30 side, and the stagnant water in the water passage 20 and the stagnant water in the electrolytic cell 15 can be discharged to the pH measurement channel 33 side.

  A pH sensor 34 for measuring the pH value of the generated alkaline ionized water is attached to the pH measurement path 33.

  The pH measurement path 33 to the pH sensor 34 is branched from the middle of the water discharge path 7 so that the generated alkaline ionized water can be passed through the pH measurement path 33 to the pH sensor 34.

  At the time of water flow, the drain valve 28 is closed by the pressure of the raw water introduced into the water passage 20, and the raw water is guided to the inlets 26 and 27 and flows into the electrolytic cell 15 from the respective inlets. The inlet 26 is larger than the inlet 27, and the amount of water flowing from the inlet 26 is set to be larger than the amount of water flowing from the inlet 27.

  When the water is stopped, the pressure of the raw water in the water passage 20 is lowered, so the drain valve 28 is opened, and the accumulated water in the water passage 20 and the accumulated water in the electrolytic cell 15 are discharged to the pH measurement passage 33 through the drainage passage 30. The

  A pH measurement path drain electromagnetic valve 31 c is attached between the pH sensor 34 and the discharge path 29.

  The pH measuring path drain electromagnetic valve 31c is in an open state in a mode in which the pH value is measured by the pH sensor 34 (alkaline water mode, acidic water mode, etc.). Moreover, when the staying water in the electrolytic cell 15 is drained at the time of water stop, it will be in an open state. Furthermore, when the pH sensor 34 is not used (water purification mode or the like) due to the operation mode in which the main body is in the water passing operation, the main body is closed, and the inflow of water from the water discharge passage 7 to the pH measurement passage 33 can be cut off. It can be done.

  The discharge channel 7 is connected to the upper part of the chamber on the electrode 24 side, and the drainage channel 8 is connected to the upper part of the chamber on the electrode 25 side. Usually, alkaline ionized water from the discharge channel 7 and acidic ions from the drainage channel 8 are connected. Water is spitting out.

  An electric valve 32 that adjusts the amount of drainage is connected in the middle of the drainage channel 8 so that the flow rate of drainage can be adjusted.

  By comparing the flow rate signal from the flow rate sensor 21 and the output signal from the pH sensor 34 with the control unit 18 and comparing the flow rate to be drained, and adjusting the opening of the motor operated valve 32, the water discharge path 7 from the electrolytic cell 15 is obtained. The flow rate ratio to the drainage channel 8 can be varied.

  When the flow rate ratio is changed and the flow rate to the drainage channel 8 increases, the flow rate of the water discharge channel 7 decreases, but the pH value tends to increase toward the alkali side, so that the alkali ions from the water discharge channel 7 can be changed by changing the flow rate ratio. It is also possible to control the pH value of water.

  The drainage channel 8 is branched through the motor-operated valve 32. The drainage channels 8a and 8b are respectively provided with an acid-only drainage solenoid valve 31a and a drainage solenoid valve 31b, and pass through the acid-only drainage solenoid valve 31a. The drainage is connected to an acidic outlet 37.

  A ground terminal 38 is attached between the drainage channel 8a and the acid-only drainage electromagnetic valve 31a so as to come into contact with drainage passing through the drainage channel 8a.

  The ground terminal 38 is connected to the electrode 24 in the electrolytic cell 15 by the control unit 18 through a lead wire.

  The waste water that has passed through the drain electromagnetic valve 31 b joins the discharge path 29 from the pH sensor 34 and is discharged from the main body 2.

  In the case of the water purification mode in which the electrolysis operation is not performed, the acidic drainage electromagnetic valve 31a and the drainage electromagnetic valve 31b are also closed in the same manner as the pH measurement path drainage electromagnetic valve 31c. Become.

  In the above configuration, the operation of the electrolyzed water generating apparatus according to the first embodiment will be described with reference to FIGS. FIG. 3 is a flow chart of the operation of the electrolyzed water generating apparatus shown in Example 1, and FIG. 4 is a characteristic diagram showing variations in pH sensor output depending on the ground unit attachment site.

  When the user connects the power cord 9 to the outlet, the main body 2 is in a standby state until water is passed or there is an input to the operation display unit 16 (step 1 (displayed as ST1, the same applies hereinafter)).

  The user selects an alkaline strength pH value (for example, pH 9) set in advance on the operation display unit 16. The selected pH value signal is transmitted from the operation display unit 16, and the control unit 18 that has received the transmission sets the opening of the motor-operated valve 32 according to the pH value of the alkali strength selected by the user (for example, to pH 9). If it is set, the opening degree is set large so that the water amount ratio remains 8: 1).

  Next, when the user opens the faucet 4 and switches the water channel switching valve 5, raw water in the water supply pipe 3 is introduced into the main body 2 from the water supply channel 6.

  The introduced raw water is subjected to purification treatment after removing impurities such as residual chlorine and turbidity in the water purification cartridge 14, and then flows through the water passage 20 and is passed to the flow rate sensor 21. The flow rate sensor 21 passes through the purified water passing therethrough. A pulse signal is output to the control unit 18 according to the flow rate (ST2).

  The control unit 18 counts the flow rate pulse from the flow rate sensor 21, counts the number of pulses per unit time and the number of integrated pulses, compares both values with the set value, and detects that the water is in a flow state to the pH measurement path 33. In order to pass water, the pH measurement path drain electromagnetic valve 31c is opened.

  The pH measuring path drain electromagnetic valve 31c remains closed in the case of purified water (ST3).

  When the flow rate pulse from the flow rate sensor 21 reaches a preset value, the control unit 18 determines that the water flow to the electrolytic cell 15 is sufficient and the user selects the electrode 24 and the electrode 25 of the electrolytic cell 15. In this case, the electrode 24 is on the minus side and the electrode 25 is on the plus side (ST4).

  A part of the water that has passed through the flow sensor 21 is branched into the addition tube 22, and an electrolysis auxiliary agent such as calcium glycerophosphate is added to join the water passage 20 again and introduced into the electrolytic cell 15.

  The calcium glycerophosphate in the addition cylinder 22 is for accelerating electrolysis, and may not be necessary depending on the quality of water used, and an opening / closing valve for the amount of addition to the branch part from the water channel 20 to the addition cylinder, Or you may make it control the addition amount added with the pH value produced | generated by providing a motor operated valve.

  The water passage 20 is branched into two in front of the electrolytic cell 15, and the drain valve 28 is changed from the open state to the closed state by the raw water pressure, and the raw water is supplied from the inlet 26 to the electrode 24 side chamber and from the inlet 27. Each flows into the chamber on the electrode 25 side.

  Here, due to the difference in size between the inlet 26 and the inlet 27, the amount of water flowing from the inlet 26 is larger than the amount of water flowing from the inlet 27, and the ratio of the amount of water is the opening of the motor-operated valve 32 in the drainage channel 8. Therefore, the ratio is set from 1: 1 to about 8: 1.

  When an electrolysis voltage is applied, alkaline ionized water is generated on the electrode 24 side (minus side), and acidic ionized water is generated on the electrode 25 side (plus side). The alkaline ionized water is discharged from the discharge channel 7 and the acidic ionized water is It is discharged from the drainage channel 8.

  Almost part of the alkaline ionized water flowing through the water discharge channel 7 is branched and introduced into the pH measurement channel 33. However, the amount of water is very small, and the final water amount ratio is affected. Absent.

  The pH value of the alkaline ionized water introduced into the pH measurement path 33 is detected by the pH sensor 34, and the pH value is transmitted to the control unit 18 (ST7).

  At this time, a part of the electrolytic current flowing between the electrode plates 24 and 25 becomes a stray current, which affects the signal output of the pH sensor 34 and the signal to the control unit 18 becomes unstable.

  As shown in FIG. 4, the output of the pH sensor 34 during electrolysis has a large difference in stray current depending on the presence or absence of the ground unit. In addition, since the variation in the output signal of the pH sensor 34 also varies depending on the position where the earth unit is attached, the earth terminal 38 is arranged in the discharge path 8a of the electrolytic cell 15 as the best attachment position this time as shown in FIG. Yes.

  By arranging the ground terminal 38 in the discharge path 8a, the output of the pH sensor 34 becomes stable and accurate pH value detection control is possible (Y in ST7 to ST9).

  If the output signal from the pH sensor is stable, the signal level of the set pH value and the input signal level from the pH sensor 34 are compared by the control unit 18, and if it is the same as the selected pH value level, it remains as it is. The current electrolytic state is maintained until the water is stopped (ST9).

  When the detected pH value is different from the set value, the control unit 18 controls the electrolysis current and controls the electrolysis current to the electrolytic cell 15 so as to match the set pH value again (N in ST9).

  When a change in the water flow rate occurs due to a change in tap water pressure or the tap 4 being squeezed, the detected pH value also changes accordingly. For example, when the water faucet 4 is throttled, the flow rate of water flow decreases, the flow rate pulse from the flow rate sensor 21 to the control unit 18 decreases, and the pH value also changes. This is performed as control of the electrolysis current to the electrolytic cell 15 (N of ST8), (N of ST9).

  When the user closes the faucet 4 and changes from the water flow state to the water stop state, the pulse signal from the flow rate sensor 21 to the control unit 18 stops, so the control unit 18 determines that the water is stopped and the electrolysis voltage to the electrolytic cell 15. Is stopped (N in ST10), (ST11).

  After stopping the application of the electrolysis voltage to the electrolytic cell 15, the control unit 18 sets the main body again in the standby state and enters a standby state in which the input signal from the operation display unit 16 and the input signal from the flow sensor 21 are monitored (ST11). To ST1).

  As described above, according to the first embodiment, by providing the ground terminal 38 that penetrates the discharge passage 8a and the water-flowing side surface of the acidic drainage electromagnetic valve 31a and directly contacts the drainage flowing through the discharge passage 8a. Transmission of stray current from the electrolytic cell 15 to the pH measurement path 33 can be prevented, and the pH value of the alkaline ionized water can be accurately measured by the pH sensor 34.

(Example 2)
Next, a structure that is not affected by stray current will be described with reference to FIG. In the schematic block diagram of the main body of the electrolyzed water generating apparatus shown in Example 2 in FIG.

  The second embodiment basically uses the first embodiment, and the difference in configuration from the first embodiment is that the pH measurement path electromagnetic valve 40 is attached in the middle of the pH measurement path 33, By bending a part of the pH measurement path 33 to a predetermined height above and blocking water flow through the pH measurement path 33, stray currents transmitted through the water from the electrolytic cell 15 during electrolysis can be blocked. That is, the output of the pH sensor 34 is stabilized.

  On the other hand, the difference in the operation of the electrolyzed water generating device is the same as that of the first embodiment from ST21 to ST24 as shown in the flowchart of the operation of the electrolyzed water generating device shown in the second embodiment of FIG.

  After detecting the flow of raw water to the main body, the control unit 18 starts applying an electrolysis voltage to the electrolytic cell 15, and at the same time, the control unit 18 opens the pH measurement path electromagnetic valve 40 to measure the pH of alkaline ionized water in the water discharge path 7. It introduces to the road 33 (ST25).

  The control unit 18 controls the electrolysis current to the electrolytic cell 15 while confirming the water flow by the flow rate pulse from the flow sensor 21, and then closes the pH measurement path electromagnetic valve 40 to block the water flow to the pH measurement path 33. The water flow to the pH sensor 34 is cut (ST27), (ST28).

  Since there is no water flow to the pH measurement path 33, the stray current from the electrolytic cell 15 is also cut off.

  In this state, the output signal of the pH sensor 34 is detected by the control unit 18 (ST29) and compared with the set pH value. If the measured value and the set value are not equal, the pH measurement path solenoid valve 40 is opened to measure the pH. Alkaline ionized water is again introduced into the path 33 (ST29) and (ST30 N).

  When the measured pH value is insufficient with respect to the selected pH value, the control unit 18 controls the electrolysis current of the electrolytic cell 15 in the direction of increasing the pH value. In the opposite case, control is performed in the direction of decreasing the pH value (ST27).

  The electrolytic current control is performed for a certain period of time, and the pH value is determined again by closing the pH measurement path electromagnetic valve 40 for a period during which the pH value is measured.

  When the water flow to the main body is stopped, the flow rate pulse signal from the flow rate sensor 21 to the control unit 18 stops, so the control unit 18 determines that the water is stopped and stops applying the electrolytic voltage to the electrolytic cell 15 and waits. It becomes a state (N of ST31), (ST32).

  When water stoppage is detected during the electrolysis operation in which the pH measurement path solenoid valve 40 is open, the pH measurement path solenoid valve 40 is closed to stop the application of the electrolysis voltage (N in ST26), and (ST33). ).

  When detecting the pH value of the alkaline ionized water thus generated, the influence of the stray current on the pH sensor 34 is suppressed by closing the pH measurement path solenoid valve 40 and shutting off the water flow to the pH measurement path 33. Accurate pH value can be measured.

  As described above, according to the second embodiment, the pH measurement path electromagnetic valve 40 is arranged in the middle of the pH measurement path to block water flow to the pH measurement path 33 and at the same time, the water from the electrolytic cell 15 during electrolysis Further, the stray current that is transmitted can be blocked, and the pH value of the alkaline ionized water can be accurately measured by the pH sensor 34.

(Example 3)
In the schematic configuration diagram of the main body of the electrolyzed water generating device shown in Example 3 in FIG. 7, the same components as those in Example 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

  The third embodiment basically applies the second embodiment mutatis mutandis, and the difference in configuration from the second embodiment is that the downstream of the pH measurement path electromagnetic valve 40 attached in the middle of the pH measurement path 33. An air introduction solenoid valve 41 for introducing air into the bent portion is attached to the upper portion of the side bent portion.

  On the other hand, the difference in the operation of the electrolyzed water generating apparatus is that a signal input from the operation display unit 16 and a signal input from the flow rate sensor 21 due to water flow are shown in the flowchart of the operation of the electrolyzed water generating apparatus shown in Example 3 of FIG. In the waiting standby state, the air introduction solenoid valve 41 and the pH measurement path solenoid valve 40 are closed, and when the flow rate pulse from the flow rate sensor 21 due to water flow is input to the control unit 18, the control unit 18 Application of electrolytic voltage to the electrolytic cell 15 is started (ST44).

  Next, the pH measurement path electromagnetic valve 40 and the pH measurement path drain electromagnetic valve 31c are opened, and the alkali ion water generated from the water discharge path 7 to the pH measurement path is introduced (ST46).

  The control unit 18 controls the electrolysis current to the electrolytic cell 15 and simultaneously closes the pH measurement path electromagnetic valve 40 and closes the water flow to the pH measurement path 33 and opens the air introduction electromagnetic valve 41 after a few seconds, and after a few seconds, drains the pH measurement path. The electromagnetic valve 31c is closed (ST50).

  Through a series of operations, air is introduced into the upper bent portion of the pH measuring path 33, and in addition to blocking water flow by the electromagnetic valve, stray current from the electrolytic cell 15 during electrolysis can be blocked by blocking by the air layer.

  As described above, according to the third embodiment, air is introduced into the upward bending portion of the pH measurement path 33 by the air introduction solenoid valve 41, and in addition to blocking water flow by the pH measurement path solenoid valve 40, By blocking water flow to the pH sensor 34, stray current from the electrolytic cell 15 during electrolysis can be more reliably blocked, and accurate pH value measurement of alkaline ionized water can be performed.

  In addition, in the above Example, although the main body 2 of the electrolyzed water generating apparatus is installed in the upper part of the sink 1, it is the schematic which shows the whole structure of the sink provided with the electrolyzed water generating apparatus shown in Example 1 of FIG. As shown, the main body 2 may be a built-in type installed in the sink 1.

  9 differs from FIG. 1 in that raw water is branched by a branch valve 35 attached in the middle of the water supply pipe 3 and introduced into the main body 2 from the water supply path 6, and in the middle of the water discharge path 7 and the drainage path 8. In addition, an operation display unit 36 having a built-in on / off valve such as a solenoid valve is arranged at the top of the sink 1 so that a predetermined pH value can be selected, water flow can be started and stopped, and the like. It is.

  As a contact method between the earth unit and the drainage flowing inside the drainage channel, a metal mesh film may be disposed in the middle of the drainage channel and connected to the earth unit.

  Moreover, you may earth | ground the metal part by making a part of drainage channel into a metal pipe. Furthermore, in order to control the amount of water, the motor-operated valve 32 is arranged in either the water discharge channel 7 or the drainage channel 8. For example, any one of the water flow channel 20 and the water discharge channel 7, the water flow channel 20 and the water discharge channel 8, and so on. In addition, an electric valve may be provided to control the amount of water flow and the amount of discharged water, that is, the amount of water in the electrolytic cell 15.

  When water flow is stopped, a predetermined electrolysis voltage is applied to the electrode 24 and the electrode 25 at a potential opposite to normal (reverse electrolysis) for a predetermined time, so that the scale such as calcium attached to the electrode 24 is particularly peeled off. It can be dissolved (electrode cleaning).

  Furthermore, after the pH measurement path drain electromagnetic valve 31c is opened and the retained water after electrode cleaning in the electrolytic cell 15 is introduced into the drainage path 30, it can be drained from the discharge path 29.

  In the case of reverse electrolysis, the electrode 24 is on the positive side and the electrode 25 is on the negative side.

  Although the drainage path 30 is joined to the upstream side of the pH sensor 34, it may be joined between the pH sensor 34 and the pH measurement path drain electromagnetic valve 31c.

  As described above, the electrolyzed water generating apparatus of the present invention can generate alkaline ionized water having a predetermined pH value in a short time, so that it can be applied to a strongly acidic water generating apparatus used for sterilization and disinfection in hospitals and the like. Can be expected.

Schematic which shows the whole structure of the sink provided with the electrolyzed water generating apparatus shown in Example 1. FIG. Schematic block diagram of the main body of the electrolyzed water generating apparatus shown in Example 1 Flowchart of operation of electrolyzed water generating apparatus shown in embodiment 1 Characteristic diagram showing variation in pH sensor output depending on the ground unit attachment site Schematic block diagram of the main body of the electrolyzed water generating apparatus shown in Example 2 Flowchart of operation of electrolyzed water generating apparatus shown in embodiment 2 Schematic block diagram of the main body of the electrolyzed water generating apparatus shown in Example 3 Flowchart of operation of electrolyzed water generating device shown in embodiment 3 Schematic which shows the whole structure of the sink provided with the electrolyzed water generating apparatus shown in Example 1. FIG. Schematic configuration diagram of main body of conventional electrolyzed water generating device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sink stand 2 Main body 7 Water discharge path 8 Drainage path 15 Electrolysis tank 18 Control part 20 Water flow path 21 Flow rate sensor 22 Addition cylinder 24, 25 Electrode 28 Drain valve 29 Drain path 30 Drain path 31a Acid exclusive drain solenoid valve 31b Drain solenoid valve 31c pH measurement path drain solenoid valve 32 Motorized valve 33 pH measurement path 34 pH sensor 35 Branch valve 36 Operation indicator 37 Acidic outlet 38 Earth terminal 40 pH measurement path solenoid valve 41 Solenoid valve for air introduction

Claims (4)

An electrolytic cell that electrolyzes raw water to produce alkaline ionized water or acidic ionized water, a control unit that controls an electrolysis voltage applied to the electrolytic cell, and a discharge path that discharges water in the electrolytic cell, A pH sensor for detecting the pH value of alkaline ionized water or acidic ionized water generated in the electrolytic cell, and a pH measuring path for introducing alkaline ionized water or acidic ionized water from the electrolytic cell to the pH sensor, from the electrolytic cell In order to prevent transmission of stray currents to the pH sensor, an earthing unit is provided that directly contacts the drainage flowing through the drainage channel by passing the grounding unit of the electrolytic cell through a predetermined side surface of the drainage channel. Electrolyzed water generator. It has an electrolytic cell that electrolyzes raw water to generate alkaline ionized water or acidic ionized water, and a control unit that controls the electrolysis voltage applied to the electrolytic cell, and the alkaline ionized water and acidic ions generated in the electrolytic cell A pH sensor that detects the pH value of water and a pH measurement path that introduces alkaline ionized water or acidic ionized water from the electrolytic cell to the pH sensor. An on-off valve is placed in the middle of the pH measurement path, and downstream of the on-off valve. In order to prevent transmission of stray current from the electrolytic cell to the pH sensor, a bent portion is provided to bend a part of the pH measurement path to a predetermined height above and block the water flow of the pH measurement path. A characteristic electrolyzed water generating device. The air introduction part which introduce | transduces air into a bending part at the upper part of the said bending part, interrupts | blocks the water flow of a pH measurement path is arrange | positioned, and the on-off valve was provided in the middle of the air introduction path. Electrolyzed water generator. The sink provided with the electrolytic cell production | generation apparatus of any one of Claim 1 to 3.

Images