JP4465758B2 - Electrolyzer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to electrolysis (hereinafter referred to as electrolysis), and particularly to control of electrolysis according to the turbidity of water to be treated in an electrolysis apparatus that supplies and sterilizes electrolyzed water to the water to be treated.
[0002]
[Prior art]
  Conventionally, there has been one that controls the electrolysis current in accordance with the measurement result of the turbidity sensor (for example, JP-A-10-99614).
[0003]
  As shown in FIG. 5, this electrolysis apparatus is provided with a filter tank 3 in a circulation path 2 that sucks bath water 1 in a bathtub and returns it to the bathtub, and an electrolytic tank 4 in which an aluminum electrode is placed upstream of the filter tank 3. Is provided in the circulation path 2, the turbid components in the bath water 1 are aggregated by the flocculant generated in the electrolytic tank 4 and filtered through the filter tank 3. The turbidity sensor 5 for measuring the turbidity and the controller 6 for controlling the electrolytic current value of the electrolytic cell 4 in accordance with the measurement result by the turbidity sensor 5 are used. Moreover, the sterilization electrolytic cell 7 provided in parallel by bypassing the filtration tank 3 was provided. In addition, 8 is a circulation pump that circulates the bath water 1, and 9 is a heater unit that keeps the bath water warm.
[0004]
[Problems to be solved by the invention]
  However, the conventional electrolyzer is configured to control the electrolysis current value of the electrolyzer 4 according to the measurement result by the turbidity sensor 5, and the electrolyzer 4 is electrolyzed using an aluminum electrode. Thus, aluminum ions are eluted from the anode, the aluminum ions react with water to form aluminum hydroxide colloids, and the suspended substances are aggregated. That is, the aluminum electrode is melted to aggregate turbid components and facilitate filtration. Therefore, when the turbidity increases due to human dirt or dirt, the turbidity can be filtered well by increasing the amount of aggregation by increasing the electrolysis current, but many bacteria are brought in by human bathing. As it begins to grow, turbidity increases with it. If the growth rate of bacteria is higher than the filtration rate of the filtration tank, the bacteria will continue to increase even during filtration, resulting in an increase in the turbidity of the bath water. In particular, when organic substances that are nutrients for bacteria are dissolved in the bath water, it is difficult to remove them in a filtration tank, and when they are fast, general bacteria grow to double in about 20 minutes.
[0005]
  In addition, the conventional electrolyzer is also provided with a sterilization electrolytic cell 7 to prevent the propagation of bacteria in the bath water, but it operates only with a timer regardless of the turbidity sensor, and has a certain concentration of effective chlorine. Is just generated. Since effective chlorine is consumed by being bound to organic matter in the bath water, the concentration immediately decreases when the content of organic matter is large, and the bactericidal effect is lost. For example, when a large number of people take a bath, many organic substances are supplied, the bactericidal action of available chlorine is reduced, and more bacteria and abundant nutrients are supplied, so the bacteria grow. . If the effective chlorine concentration generated to prevent this is increased, the consumption of effective chlorine will be reduced if there is a small amount of organic matter to be supplied, such as a small number of bathers. There were problems such as giving.
[0006]
[Means for Solving the Problems]
  The present invention solves the above problems.With thingsElectrolysis means having at least a pair of insoluble electrodes therein, water supply control means for controlling supply of the electrolyzed water of the electrolysis means to the water to be treated, turbidity detecting means for detecting the turbidity of the water to be treated, And a control means for controlling the amount of electrolyzed water generated by the electrolysis means based on the turbidityThe control means controls the amount of electrolyzed water generated by the electrolysis means based on the absolute value of the turbidity of the water to be treated and the rate of increase in turbidity..
[0007]
  According to the said invention, electrolyzed water which is compounds, such as hypochlorous acid, can be produced | generated by electrolyzing the water containing a chlorine ion by supplying with electricity to an insoluble electrode. Then, the water to be treated is sterilized by supplying the electrolyzed water to the water to be treated by the water supply control means. The treated water has a low effective chlorine concentration, or when organic matter that is a nutrient source of bacteria increases, bacteria in the treated water grow. Turbidity increases according to the number of bacteria, but this turbidity is detected by the turbidity detection means, and the amount of electrolyzed water generated is controlled by controlling the amount of electricity supplied to the electrode according to the degree of increase in turbidity. Bacteria growth can be suppressed by supplying an appropriate amount of electrolyzed water to the water to be treated by the control means. Moreover, the production | generation of useless electrolyzed water is also suppressed.
[0008]
  And when the turbidity increase rate at which the turbidity starts to increase with the increase in the number of bacteria is detected with the turbidity of the water to be treated being high, the concentration of compounds such as hypochlorous acid in the electrolyzed water is changed. When the turbidity increase rate accompanying the increase in the number of bacteria is detected in a state where the turbidity of the water to be treated is low and the turbidity of the water to be treated is low, generate and supply the electrolyzed water at a low concentration. Thus, an appropriate amount of electrolyzed water can be supplied to the water to be treated, and generation of useless electrolyzed water can be suppressed.
[0009]
  Further, an electrolyzing means having at least a pair of insoluble electrodes therein, a water supply control means for controlling supply of the electrolyzed water of the electrolyzing means to the water to be treated, and a turbidity detecting means for detecting the turbidity of the water to be treated. And control means for controlling the amount of electrolyzed water produced by the electrolyzing means based on the turbidity, the control means having a setting unit for setting the capacity of the treated water, and the turbidity of the treated water The amount of electrolyzed water generated by the electrolyzing means is controlled based on the product of the rate of increase in the degree and the value of the setting unit.
[0010]
  According to the above-described invention, when a turbidity increase rate at which the turbidity starts to increase with an increase in the number of bacteria is detected under a condition where the volume of water to be treated is large, a compound such as hypochlorous acid in electrolyzed water If the turbidity increase rate accompanying the increase in the number of bacteria is detected under the condition that the volume of water to be treated is small and supplied, the electrolyzed water is generated in a small amount and supplied. An appropriate amount of electrolyzed water can be supplied to the water to be treated, and the production of safe and wasteful electrolyzed water can be suppressed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
  An electrolysis apparatus according to claim 1 of the present invention includes an electrolysis unit having at least a pair of insoluble electrodes therein, a water supply control unit that controls supply of electrolyzed water of the electrolysis unit to the water to be treated, and the water to be treated. Consists of turbidity detecting means for detecting turbidity and control means for controlling the amount of electrolyzed water generated by the electrolyzing means based on the turbidity.And the control means controls the amount of electrolyzed water generated by the electrolysis means based on the absolute value of the turbidity of the water to be treated and the rate of increase in turbidity.Is.
[0012]
  Then, by supplying electricity to the insoluble electrode, electrolyzed water containing chlorine ions is generated to produce electrolyzed water that is a compound such as hypochlorous acid, and the electrolyzed water is supplied to the water to be treated by the water supply control means. By supplying, the water to be treated is sterilized. The treated water has a low effective chlorine concentration, or when organic matter that is a nutrient source of bacteria increases, bacteria in the treated water grow. Turbidity increases according to the number of bacteria, but the amount of electrolyzed water generated is adjusted according to this turbidity, and the appropriate amount of electrolyzed water is supplied to the water to be treated by the water supply control means to increase bacterial growth. Can be suppressed.
[0013]
  And when the turbidity increase rate at which the turbidity starts to increase with the increase in the number of bacteria is detected with the turbidity of the water to be treated being high, the concentration of compounds such as hypochlorous acid in the electrolyzed water is changed. When the turbidity increase rate accompanying the increase in the number of bacteria is detected in a state where the turbidity of the water to be treated is low and the turbidity of the water to be treated is low, generate and supply the electrolyzed water at a low concentration. Thus, an appropriate amount of electrolyzed water can be supplied to the water to be treated, and generation of useless electrolyzed water can be suppressed.
[0014]
  Also,Claim 2The electrolyzer according toElectrolysis means having at least a pair of insoluble electrodes therein, water supply control means for controlling supply of the electrolyzed water of the electrolysis means to the water to be treated, turbidity detecting means for detecting the turbidity of the water to be treated, and And control means for controlling the amount of electrolyzed water produced by the electrolyzing means based on turbidity, the control means having a setting unit for setting the capacity of the treated water, Based on the product of the rising speed and the value of the setting unit, the amount of electrolyzed water generated by the electrolyzing means is controlled.
[0015]
  AndWhen the turbidity increase rate is detected under the condition that the volume of treated water is large and the turbidity starts to increase with the increase in the number of bacteria, the production amount of compounds such as hypochlorous acid in the electrolyzed water is increased. If the rate of turbidity increase due to an increase in the number of bacteria is detected under the condition that the volume of treated water is small, an appropriate amount of electrolyzed water can be produced by supplying less electrolyzed water. Water can be supplied to the water to be treated, and production of safe and wasteful electrolyzed water can be suppressed.
[0016]
  Also,Claim 3The electrolyzer according toControl meansThe generation concentration of electrolyzed water is variably controlled in accordance with the turbidity level of the water to be treated or the rate of increase in turbidity.
[0017]
  When the turbidity level of the water to be treated is high, supply the compound water such as hypochlorous acid at a high concentration, and when the turbidity level is low, reduce the concentration of the electrolyzed water. Supply. In addition, when the turbidity increase rate of the water to be treated is fast, supply the electrolyzed water at a high concentration, and when the turbidity increase rate is slow, supply the electrolyzed water at a low concentration. An appropriate amount of electrolyzed water can be supplied to the water to be treated.
[0018]
  Also,Claim 4The electrolysis apparatus according to the present invention has a reservoir in the electrolysis means, and the control means first energizes the electrodes during the electrolysis operation, and then drives the water supply control means.
[0019]
  And it supplies with electricity to an electrode in the state which stopped the water supply control means, stores the electrolyzed water produced | generated in the storage part, and controls to supply electrolyzed water to to-be-processed water after complete | finishing electrolysis. This is because there is no water flow during electrolysis, so the water in the electrolysis means flows due to the attracting action when the hydrogen gas or oxygen generated on the electrode surface rises, and the chlorine ions contained in the water slowly Since it passes between the electrodes, efficient electrolysis can be performed.
[0020]
  Also,Claim 5The electrolytic apparatus according to the present invention includes a tank for storing an electrolyte solution and an electrolyte supply means for supplying the electrolyte solution to the electrolytic means.The control meansBased on turbidity detected by turbidity detection meansAnd salaryWater control means, the electrolyte supply means,To the extremeThe current supply is controlled.
[0021]
  Then, by supplying an electrolytic solution such as a sodium chloride solution to the electrolytic means, a high concentration of chlorine ions in the electrolytic solution is supplied to the electrolytic means. Therefore, electrolyzed water that is a compound such as a high concentration of hypochlorous acid is used. Can be generated. Moreover, the production | generation density | concentration of electrolyzed water can be varied by controlling the supply amount of this electrolyte solution.
[0022]
  Also,Claim 6The electrolysis apparatus according to the present invention is configured such that turbidity detection means is disposed in the electrolyzed water supply section to the water to be treated, and the turbidity detection means is washed with the electrolyzed water.
[0023]
  And, when supplying the electrolyzed water to the water to be treated, the generated high concentration electrolyzed water is configured to pass around the turbidity detecting means, so that the dirt adhering to the turbidity detecting means is decomposed, Since it is washed away, turbidity detection can always be performed stably.
[0024]
  Also,Claim 7The electrolyzer according to the present invention has means for notifying the user, and the control means replaces the water to be treated by the notifying means when the turbidity level of the water to be treated or the rising speed of the turbidity exceeds a predetermined value. This is a notification for prompting.
[0025]
  And the predetermined value of the turbidity level of this to-be-treated water or the turbidity increasing speed has too many turbidity components of to-be-treated water, so that sufficient sterilizing effect cannot be obtained even if electrolytic water is supplied. In such a case, the user is informed to change the water to be treated, and is notified by display or sound.
[0026]
【Example】
  Embodiments of the present invention will be described below with reference to the drawings.
[0027]
  Example 1
  FIG. 1 is a configuration diagram of an electrolysis apparatus according to Embodiment 1 of the present invention.
[0028]
  In FIG. 1, an electrolyzer main body 15 electrolyzes and sterilizes bath water 17 which is water to be treated in a bathtub 16 and circulates and purifies it. Within the electrolyzer main body 15, a water supply control means 19, which is a circulation pump for flowing the bath water 17 through the circulation path 18, a filtration means 20 for filtering dirt such as impurities of the bath water flowing through the circulation path 18, and a filtration means 20. Turbidity of bath water flowing in the circulation path 18, electrolysis means 22 having a pair of insoluble electrodes 21 in the interior thereof, an electrolyte supply means 24 for supplying the electrolyte solution 23 to the electrolysis means 22, A turbidity detecting means 25 for detecting and a control means 26 are provided.
[0029]
  The bath water 17 flowing through the circulation path 18 is sucked from the bathtub 16 and enters the water supply control means 19 through the inlet pipe 27. The bath water 17 delivered from the water supply control means 19 is supplied with the water supply pipe A28, the switching valve A29, It is sent to the filtering means 20 through the water pipe B30. The bath water 17 filtered by the filtering means 20 returns to the bathtub 16 through the outlet pipe A31, the switching valve B32, and the outlet pipe B33.
[0030]
  The filtration means 20 is provided with a cylindrical filter 34 therein, and includes a filtration inlet 35 connected to the water supply pipe B30 and a filtration outlet 36 connected to the outlet pipe A31. The filtration inlet 35 and the outer surface of the filter 34 are communicated with each other. The filtration outlet 36 and the inner surface of the filter 34 are communicated with each other. That is, the circulated water passes from the outer surface of the filter 34 toward the inner surface, and traps impurities that are soil components contained in the water on the outer surface of the filter 34. The filter 34 may be a spool, a non-woven fabric, a woven fabric, a sponge-like resin, a porous material, or the like.
[0031]
  The electrolysis means 22 is configured by facing a pair of plate-like electrodes 21 a and 21 b inside an electrolytic cell 37. The electrolytic bath 37 is provided with an electrolytic inlet 38 at the lower end and an electrolytic outlet 39 at the upper end, and the electrolytic inlet 38 communicates with the lower end of the filter means 20 on the inner side of the filter 34. The electrolytic outlet 39 communicates with the filtration outlet 36. In addition, the electrode 21 used here has a base material of titanium or a titanium alloy, and a surface coated with a noble metal such as platinum or iridium is used as an insoluble electrode.
[0032]
  The configuration of the filtering means 20 and the electrolysis means 22 is in a state where the electrolytic water generated by the electrolysis of the electrolysis means 22 is stored in the filtration means 20. That is, the electrolytic means 38 communicates with the electrolytic inlet 38 and the electrolytic outlet 39 on the downstream side of the filtering means 20 so that the electrolytic water naturally circulates, so that the filtering means 20 constitutes a storage part of the electrolytic means 22.
[0033]
  The staying electrolysis is electrolysis in a state where water is not passed through the electrolysis means 22 and means electrolysis in a state where the operation of the water supply control means 19 is stopped and the circulation operation is not performed.
[0034]
  The turbidity detecting means 25 converts the light transmittance of the bath water into an electrical signal by a photo sensor. The turbidity detecting means 25 is arranged in the vicinity of the electrolysis outlet 39 on the upstream side of the filtration outlet 36, and the electrolyzed water generated in the electrolysis tank 37 is The turbidity detecting means 25 is directly contacted.
[0035]
  The electrolyte solution 23 is an aqueous solution of salt 41 stored in the tank 40, and supplies the water in the outlet pipe A 31 to the tank inlet 43 of the tank 40 by the electrolyte supply means 24 provided in the water supply path 42. This water is guided to the bottom of the tank through a water passage pipe 44 penetrating the tank 40 and passes through the salt 41 to become saturated saline at the top of the tank 40. This electrolyte solution 23 is guided and supplied from the tank outlet 45 provided at the upper end of the tank to the upper part of the electrolytic cell 37 through the water outlet 46. In this embodiment, a minute flow rate can be supplied to the electrolyte supply means 24 using an electromagnetic pump.
[0036]
  The water supply path 42 is provided with a check valve 47 that prevents the electrolyte solution 23 from flowing back to the outlet pipe A31.
[0037]
  The water supply pipe A28 communicates with the switching valve B32 via a branch pipe 48 at a branch point 47 on the way. The switching valve B32 switches between a circulation operation state in which the outlet pipe A31 and the outlet pipe B33 are communicated and a backwashing state in which the branch pipe 48 and the outlet pipe B33 are in communication.
[0038]
  A drain pipe 49 communicates with the switching valve A29, and is a pipe for discharging water from the switching valve A29 to the outside of the electrolyzer main body 15.
[0039]
  The switching valve A29 is in a circulating operation state in which the water supply pipe A28 and the water supply pipe B30 are in communication, in a backwashing state in which the water supply pipe A28 and the drainage pipe 49 are in communication, and in the water supply pipe A28, the water supply pipe B30, and the drainage pipe 49. Is switched between the closed state and the closed state. That is, the switching valve A29 is also an opening / closing means. Further, if the switching valve A29 and the switching valve B32 are simultaneously switched to the backwashing state and the water supply control means 19 is operated, the backflow operation is performed so that the circulation to the filtering means 20 is backflowed. That is, the switching valve A29 and the switching valve B32 serve as switching means for backflow operation.
[0040]
  The control means 26 is configured to control the water supply control means 19, the energization of the electrode 21, the electrolyte supply means 24, the switching valve A29, and the switching valve B32, and the residence electrolytic operation, the circulation filtration operation, the filtration Perform backwashing operation of the means.
[0041]
  Next, a specific configuration of the control means 26 will be described with reference to FIG. In the figure, reference numeral 50 denotes a known microcomputer (hereinafter referred to as a microcomputer) incorporating an input / output interface, a memory, etc., which is connected to input a signal from an operation panel 51 having an operation start switch. Can be input. A turbidity detection circuit 52 converts a signal from the turbidity detection means 25. A constant current circuit 54 supplies a constant current to the electrode 21 and is driven according to an instruction from the microcomputer 50 during electrolysis. A pole switching circuit 55 that switches the polarity of the electrode 21 in accordance with a signal from the microcomputer 50 is provided. An electromagnetic pump drive circuit 56 drives an electromagnetic pump as the electrolyte supply means 24 in accordance with an instruction from the microcomputer 50. A circulation pump drive circuit 57 drives the water supply control means 19 according to an instruction from the microcomputer 50. 58 is a switching valve A drive circuit that drives the switching valve A29 in accordance with an instruction from the microcomputer 50, and 59 is a switching valve B drive circuit that drives the switching valve B32. Reference numeral 60 is an informing means for informing the microcomputer 50 to exchange bath water when the turbidity level detected by the turbidity detecting means 25 or the rising speed of the turbidity exceeds a predetermined value. The
[0042]
  Next, processing contents and operations in the microcomputer 50 will be described with reference to FIGS. FIG. 3 is a flowchart of the control means, and FIG. 4 is a time chart showing its operation. In FIG. 3, when the operation start switch is pressed and turned on in 61, the purification operation starts in 62. The purification operation is an operation from T0 to T1 in FIG. 4. Here, the circulation pump 20 which is a water supply control means is turned on and operates. At this time, both the switching valve A29 and the switching valve B32 are set in a circulating state. In this circulation operation, the bath water 17 in the bathtub 21 is sent to the filtering means 20 through the inlet pipe 27, the circulation pump 20, the water supply pipe A28, the switching valve A29, and the water supply pipe B30, and impurities are filtered by the filter 34. The purified bath water returns to the bathtub 16 through the outlet pipe A31, the switching valve B32, and the outlet pipe B33.
[0043]
  In 63 of FIG. 3, the turbidity of the bath water is read from the turbidity detecting means 25. At this time, the circulating operation is performed for a short time so that the bath water flows around the turbidity detecting means 25 (a in FIG. 4). Then, at 64, it is determined whether the turbidity level and the rising speed of the turbidity do not exceed the limit value, and if the turbidity level or rising speed exceeds the limit value, a notification is made to prompt the exchange of the bath water at 65. End the electrolysis sequence. If the limit value is not exceeded at 64, it is determined at 66 whether or not the electrolytic operation is performed from this turbidity. Judgment conditions look at whether the increase rate of turbidity exceeds a predetermined value. Here, it is determined to perform electrolysis when the increase in turbidity per hour exceeds 0.1 degree.
[0044]
  The number of bacteria in the bath water of FIG. 4 increases from the human body to the bathtub by bathing from T0 to T1. At this time, organic matter, which is a nutrient source of bacteria, also dissolves in the bath water, but the bacteria do not grow until they adapt to environmental changes. In general, growth begins after 2 hours or more. Then, growth starts at T2, and if the environment for bacteria is good, it will continue to double in about 20 minutes. At this time, the turbidity of the bath water is increased by turbidity from T0 to T1, and the turbidity increases due to bathing, but decreases due to the purification action. At the time T1, the purification is finished and the turbidity is constant. However, as the number of bacteria increases from T2, the bath water begins to become cloudy. Most of the cloudy components are bacteria of about 1 μm, and most of them pass through the general filtering means 20. Therefore, this turbidity change can also be detected by the turbidity detecting means 25 on the downstream side of the filter 34. In addition, the degree of bacterial growth in bath water is difficult to predict because it depends on the amount of organic matter such as dirt, water quality, temperature, and type of bacteria.
[0045]
  If it is determined at 66 in FIG. 3 that the turbidity increase rate exceeds a predetermined value and electrolysis occurs, 67 salt water supply amount is calculated. In general, the higher the chlorine ion concentration, the greater the amount of chlorine compound such as hypochlorous acid that is generated. Therefore, if the amount of salt water supplied is increased, the concentration of electrolyzed water can be increased. This salt water supply amount C is obtained in proportion to the rate of increase in turbidity (dD / dt) using Equation 1. A is a constant and B is a proportional coefficient.
[0046]
  C = A + B × (dD / dt) (Formula 1)
  In 68, first, the switching valve A is closed, and the electromagnetic pump as the electrolyte supply means 24 is driven so that the supply amount of the calculated value C is obtained. (T3 to T4 in FIG. 4) As the electromagnetic pump 25 is driven, the saturated saline solution 24, which is the electrolyte solution in the tank 40, is supplied to the electrolytic cell 37. Since the salt solution supplied into the electrolytic cell 37 has a large specific gravity, it settles while being diffused in the electrolytic cell 37 and accumulates at the bottom of the electrolytic cell 37.
[0047]
  Next, at 69, energization of the electrode 21 is started and electrolysis is performed. Electrolysis starts with electrode 21a as the anode and 21b as the cathode. Immediately after the start of electrolysis, since most of the electrode 21 is in contact with the bath water, electrolysis of water occurs preferentially, and hydrogen and oxygen gas are generated between the electrodes 21ab. Since these gases are lighter than tap water, they float on the upper part of the electrolytic cell 37. This gas movement causes an upward flow of water between the electrodes 21ab. Then, the saline staying at the bottom of the electrolytic cell 37 is sucked up between the electrodes 21ab by the flow of water generated by the floating of the gas, and flows in the direction of the electrolytic outlet 39 through the electrodes 21ab while diffusing into the bath water. . The bath water in which the saline solution is diffused is likely to react as follows.
[0048]
  2Cl⁻+ 2e⁻→ Cl₂↑
  Cl₂+ OH⁻→ HClO + Cl⁻
  Cl2 + 2OH⁻→ ClO⁻+ Cl⁻+ H₂O
  Generated water such as hypochlorous acid generated by electrolysis flows into the upper part inside the filter 34 from the electrolytic outlet 39 by the water flow caused by the rising of the gas, and returns to the electrolytic inlet 38 from the lower part inside the filter 34. Accordingly, the generated water is stored inside the filter 34. The gas generated at this time is in the closed state of the switching valve A29 and the inlet side of the filtering means 20 is closed, so that the generated gas accumulates in the vicinity of the filtration outlet 36 and is pushed out toward the outlet pipe A31.
[0049]
  During the electrolysis, the polarity of the electrode 21 is switched at a preset time interval (for example, every 10 minutes). In this pole switching, the scale component adhering to the cathode is removed by switching between the anode and the cathode (from T4 to T5 in FIG. 4).
[0050]
  In 70, the circulating pump which is the water supply control means 19 is turned on to perform the electrolyzed water supply operation. Both the switching valve A29 and the switching valve B32 are set in a circulating state. The generated water stored inside the filter 34 and in the electrolytic cell 37 by electrolysis is sent to the bathtub 21 by circulation operation and diffused throughout the bathtub 21. Therefore, the generated water moves to the bathtub 21, the circulation path 18, and the filtering means 20 and has a sterilizing effect on the whole (from T 5 to T 6 in FIG. 4).
[0051]
  If it is not instructed to stop the electrolysis operation in 71, the process returns to turbidity detection in 63 and waits until the turbidity rises again. If the operation stops at 71, the operation is stopped and the electrolysis sequence is completed.
[0052]
  As described above, in Example 1, the saline solution is supplied to the electrolytic cell 37 in a state where the downstream side of the filtration unit 20 and the electrolysis unit 22 are communicated and the operation of the water supply control unit 19 is stopped. When the electrolysis is started, a circulating flow is formed between the electrolysis means 22 and the downstream side of the filtration means 20 due to the rise of gas generated between the electrodes 21. Due to this flow, the saline solution in the electrolytic cell 37 is sucked and passes between the electrodes 21, so that water for producing a chlorine compound such as high concentration hypochlorous acid can be efficiently produced. During electrolysis, the filter 34 in the filtering means 20 is filled with high-concentration product water, so that the filter 34 can be sterilized and purified in a short time, and clogging of the filter 34 due to the growth of bacteria can be prevented. It is known that this high concentration of produced water has not only a bactericidal action, but also a purification action such as protein decomposition and bleaching action. Moreover, since the produced water can be stored in the filtering means 20, the storage part of the electrolysis means 21 is not required, and the electrolysis means 22 can be downsized. In addition, if the circulation operation is resumed after the electrolytic operation and the produced water is circulated to the bathtub 21, the produced water can reach the bathtub 21, the circulation path 18, and the filtering means 20 to sterilize the whole, and bacteria growth and slimming can be achieved. Occurrence can be suppressed.
[0053]
  However, when the effective chlorine concentration of bath water is low or the organic matter that is a nutrient source of bacteria increases, bacteria in the water to be treated grow. When bacteria begin to grow, the bath water becomes cloudy. In Example 1, the phenomenon that the turbidity increases according to the growth of bacteria is detected, this turbidity is detected by the turbidity detecting means 25, and the amount of saline supplied to the electrolytic cell is controlled by the increasing rate of turbidity. The growth of bacteria can be suppressed by adjusting the concentration of the electrolyzed water and supplying an appropriate amount of electrolyzed water to the bath water. Moreover, the production | generation of useless electrolyzed water is also suppressed.
[0054]
  Further, the turbidity detecting means 25 is arranged in the vicinity of the electrolytic outlet 39 so that the electrolyzed water generated in the electrolytic cell 37 is in direct contact with the turbidity detecting means 25, so that the turbidity detecting means 25 is placed on the surface of the turbidity detecting means 25. Since dirt such as organic substances adhering during the detection is dissolved by the electrolyzed water, it is washed away when the circulating flow starts again. Therefore, the surface of the turbidity detecting means 25 is always refreshed and the detection accuracy is maintained.
[0055]
  (Example 2)
  Components having the same structure as the electrolysis apparatus of Example 1 are given the same reference numerals, and description thereof is omitted.
[0056]
  The difference from Example 1 is that, in the calculation of the salt water supply amount 67 in FIG. 3, the salt water supply amount C is proportional to the rate of increase in turbidity (dD / dt) and the absolute value D of turbidity using Equation 2. Is the place to ask for. A is a constant, and B and E are proportional coefficients.
[0057]
  C = A + B × (dD / dt) + E × D (Formula 2)
  The absolute value D of the turbidity is high because there are many soil components contained in the bath water. If the amount of these soil components is large, electrolyzed water such as hypochlorous acid is easily consumed. In No. 2, the amount of salt water supplied is increased in proportion to the absolute value D of turbidity, and the concentration of electrolyzed water is increased, so that a stable bacterial suppression effect can be obtained regardless of the level of the absolute value of turbidity.
[0058]
  (Example 3)
  Components having the same structure as the electrolysis apparatus of Example 1 are given the same reference numerals, and description thereof is omitted.
[0059]
  A difference from the first embodiment is that a setting unit for inputting the bath water 17 capacity of the bathtub 16 is provided on the operation panel 51 of FIG. 2, and the salt water supply amount C is calculated by the formula 3 in the calculation of the salt water supply amount 67 in FIG. 3. Is obtained in proportion to the product of the turbidity increasing rate (dD / dt) and the capacity V set by the setting unit. A is a constant and B is a proportional coefficient.
[0060]
  C = A + B × {(dD / dt) × V} (Formula 3)
  Since the amount of bacterial growth is proportional to the volume of bath water, electrolyzed water proportional to the volume of bath water is required to suppress this growth. Therefore, by controlling the amount of salt water supplied in proportion to the product of the rate of increase in turbidity and the capacity of the bath water, and adjusting the concentration of electrolyzed water, a stable bacteria suppression effect can be obtained regardless of the amount of bath water.
[0061]
  In Examples 1 to 3, sodium chloride was used as the electrolyte, but the same effect as described above can be obtained by using a chlorine compound containing chlorine ions such as magnesium chloride, potassium chloride, and calcium chloride.
[0062]
  Further, although the electrolysis means has been described in the non-diaphragm electrolysis system without a diaphragm between the electrodes, an electrolysis system having a diaphragm may be used.
[0063]
  Furthermore, although the electrolysis apparatus of the present invention was used for purification of bath water in the examples, it can also be used in a pool or a septic tank.
[0064]
  Further, when purifying seawater or the like, chlorine ions are sufficiently contained, so that an electrolyte solution is not necessary, so that the electrolyte solution and the electrolyte supply means for supplying it are omitted.
[0065]
  The turbidity detecting means uses a photosensor that converts the light transmittance of water into an electrical signal, but it may be a bacteria sensor that can directly measure the number of bacteria.
[0066]
【The invention's effect】
  As described above, according to the present invention, the following effects can be obtained.
[0067]
  (1) Electrolyzing means provided with at least a pair of insoluble electrodes inside, water supply control means for controlling supply of the electrolyzed water of the electrolyzing means to the water to be treated, turbidity detecting means for detecting the turbidity of the water to be treated And the control means for controlling the amount of electrolyzed water produced by the electrolyzing means based on the turbidity, so that electrolyzed water is produced according to the turbidity that increases according to the number of bacteria in the water to be treated. Since the amount can be adjusted and an appropriate amount of electrolyzed water can be supplied to the water to be treated by the water supply control means, the growth of bacteria in the water to be treated can be suppressed without supplying excess electrolyzed water.
[0068]
  (2) The control means that controls the amount of electrolyzed water generated by the electrolysis means based on the rate of increase in turbidity of the water to be treated starts to increase in turbidity as the number of bacteria in the water to be treated increases. Since the timing can be detected and the electrolyzed water is supplied at an appropriate timing, the growth of bacteria can be suppressed regardless of the initial turbidity of the water to be treated.
[0069]
  (3) As a control means, what controls the amount of electrolyzed water generated by the electrolysis means based on the absolute value of the turbidity of the water to be treated and the rate of increase in turbidity is in a state where the turbidity of the water to be treated is high, If a turbidity increase rate is detected, where the turbidity starts to increase with the increase in the number of bacteria, it is generated and supplied at a higher concentration of electrolyzed water. When the rate of increase in turbidity due to the increase in water content is detected, the concentration of electrolyzed water can be generated and supplied at a low level, so electrolyzed water such as hypochlorous acid consumed by the amount of soil components. The amount can be taken into account, and by supplying a more appropriate amount of electrolyzed water to the water to be treated, the generation of useless electrolyzed water can be suppressed.
[0070]
  (4) As a control means, it has a setting part which sets up the capacity of treated water, and controls the amount of electrolyzed water generation based on the product of the rate of increase in turbidity of treated water and the value of the setting part If the turbidity increase rate at which the turbidity starts to increase with the increase in the number of bacteria is detected under the condition that the volume of treated water is large, supply a larger amount of electrolyzed water, When the rate of turbidity increase due to an increase in the number of bacteria is detected under conditions where the volume of treated water is small, it is possible to generate and supply a small amount of electrolyzed water, so an appropriate amount of electrolyzed water is treated. It can be supplied to water, and the production of safe and wasteful electrolyzed water is suppressed.
[0071]
  (5) The control means that variably controls the generation concentration of the electrolyzed water according to the turbidity level of the water to be treated or the rate of increase in turbidity, When the generation concentration of a compound such as hypochlorous acid is increased and supplied, and the turbidity level is low, the generation concentration of electrolyzed water can be decreased and supplied. In addition, when the turbidity increase rate of the water to be treated is fast, supply the electrolyzed water at a high concentration, and when the turbidity increase rate is slow, supply the electrolyzed water at a low concentration. An appropriate amount of electrolyzed water can be supplied to the water to be treated. Therefore, not only the growth of bacteria in the water to be treated is suppressed, but also the inside of the electrolysis apparatus is varied and washed with the concentration of the electrolysis water depending on the state of dirt and bacterial growth.
[0072]
  (6) In the electrolysis means having a storage section, the control means first energizes the electrode during the electrolysis operation, and then drives the water supply control means, and then energizes the electrode with the water supply control means stopped. Then, by storing the electrolyzed water generated in the reservoir and controlling the electrolyzed water to be supplied to the water to be treated after the electrolysis is completed, there is no water flow during electrolysis, so that the water in the electrolyzing means is deposited on the electrode surface. A flow is generated by the attracting action when the generated hydrogen gas, oxygen, and the like rise, and chlorine ions contained in water slowly pass between the electrodes, so that efficient electrolysis can be performed.
[0073]
  (7) A tank for storing the electrolyte solution and an electrolyte supply means for supplying the electrolyte solution to the electrolysis means are added, and the control means is a water supply control means and the electrolyte supply means based on the turbidity detected by the turbidity detection means. In the case of controlling the energization to the electrode, an electrolyte solution such as a sodium chloride solution can be supplied between the electrodes, and a high concentration of chlorine ions in the electrolyte solution is supplied between the electrodes. Electrolyzed water that is a compound such as hypochlorous acid can be generated. Moreover, the production | generation density | concentration of electrolyzed water can be varied by controlling the supply amount of this electrolyte solution.
[0074]
  (8) When the turbidity detecting means is disposed in the electrolyzed water supply unit to the treated water and the turbidity detecting means is washed with the electrolyzed water, when supplying the electrolyzed water to the treated water, The generated high-concentration electrolyzed water passes around the turbidity detecting means, and the dirt adhering to the turbidity detecting means is decomposed or washed away, so that the surface of the turbidity detecting means is always kept clean and turbid. Degree detection can be performed stably.
[0075]
  (9) It has a means for notifying the user, and the control means urges replacement of the water to be treated by this notifying means when the turbidity level of the water to be treated or the rising speed of the turbidity exceeds a predetermined value. In the case where the notification is made, there is too much turbidity component of the water to be treated, so that the water to be treated should be replaced when sufficient sterilizing effect cannot be obtained even if electrolytic water is supplied. The user can be notified, and wasteful electrolysis and waste of time for the user can be omitted.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an electrolysis apparatus according to Embodiment 1 of the present invention.
FIG. 2 is a configuration diagram of control means in the first embodiment.
FIG. 3 is a flowchart of control in the first embodiment.
FIG. 4 is a time chart of control in the first embodiment.
FIG. 5 is a configuration diagram of a conventional electrolyzer.
[Explanation of symbols]
  17 treated water
  19 Water supply control means
  21 electrodes
  22 Electrolytic means
  23 Electrolyte solution
  24 Electrolyte supply means
  25 Turbidity detection means
  26 Control means

Claims (7)

Electrolysis means having at least a pair of insoluble electrodes therein, water supply control means for controlling supply of the electrolyzed water of the electrolysis means to the water to be treated, turbidity detecting means for detecting the turbidity of the water to be treated, and And control means for controlling the amount of electrolyzed water produced by the electrolysis means based on turbidity, the control means based on the absolute value of the turbidity of the water to be treated and the rate of increase in turbidity. An electrolyzer that controls the amount of electrolyzed water produced by the means. Electrolysis means having at least a pair of insoluble electrodes therein, water supply control means for controlling supply of the electrolyzed water of the electrolysis means to the water to be treated, turbidity detecting means for detecting the turbidity of the water to be treated, and And control means for controlling the amount of electrolyzed water generated by the electrolyzing means based on turbidity, the control means having a setting unit for setting the capacity of the water to be treated, and the turbidity of the water to be treated An electrolyzer that controls the amount of electrolyzed water generated by the electrolyzing means based on a product of an ascending speed and a value of the setting unit . Control means, electrolysis apparatus according to claim 1 or 2 in accordance with the rate of increase of turbidity level or turbidity of the water to be treated, the product concentration of electrolytic water is variably controlled. Electrolytic means comprises a reservoir, the control means, conductive during solution operation, first energizes the electrodes, electrolyte according to any one of claims 1 to 3 for driving the water supply control means after its apparatus. A tank to store the electrolyte solution, the electrolyte solution and an electrolyte supply means for supplying electrolytic means, control means, based on the detection turbidity turbidity sensing means, said electrolyte supply means and collector and water supply control means The electrolysis apparatus according to any one of claims 1 to 4 , wherein energization to the electrode is controlled. The electrolysis apparatus according to any one of claims 1 to 5, wherein turbidity detection means is disposed in an electrolyzed water supply unit to the water to be treated, and the turbidity detection means is washed with electrolyzed water. A means for notifying a user, and the control means notifies the user that the water to be treated is to be replaced by the notifying means when the turbidity level of the water to be treated or the rising speed of the turbidity exceeds a predetermined value. The electrolysis apparatus according to any one of claims 1 to 6 .

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