JPH11244857A - Electrolyzed ionic water producing implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce the electrolyzed ionic water stable in pH without being affected by an electric conductivity of water. SOLUTION: In the implement, a flow rate detecting means 14 detecting either flow rate of the water flower into an electrolytic cell having no diaphragm or an acid water or an alkali water flowed out the electrolytic cell having no diaphragm, the max. voltage setting means 24 setting the max. value of electrolytic voltage in accordance with a detected result of the flow rate detecting means 14 and an electrolytic means 25 electrolyzing the water flowing through an electrolytic passage by the voltage lower than the max. voltage set by the max. voltage setting means 24 are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic ionic water generator for electrolyzing water to produce alkaline or acidic electrolytic water.

[0002]

2. Description of the Related Art In recent years, as various effects of electrolytic ionic water have been recognized, an electrolytic ionic water generator for producing alkaline or acidic water by electrolyzing drinking water such as tap water has been widely used in ordinary households. It is getting used.
Such electrolytic ionized water generators can be broadly classified into a non-diaphragm type and a diaphragm type according to the type of electrolytic cell used. The diaphragm type electrolytic cell has a structure in which an alkaline ionized water and an acidic ionized water are not mixed by disposing a diaphragm between an anode and a cathode to partition an anode passage and a cathode passage. Such a diaphragm type electrolytic cell is disclosed, for example, in Japanese Patent Application Laid-Open No. 55-1822.

In a non-diaphragm type electrolytic cell, an anode and a cathode are arranged close to each other and opposed to each other, so that a space between the two electrodes is formed as a water passage functioning as an electrolytic chamber (hereinafter, referred to as "electrolytic passage"). is there. When electrolysis is performed while flowing water in a laminar flow state in the electrolysis passage, hydroxide ions (OH ⁻ ) are generated on the cathode surface, and hydrogen ions (H ⁺ ) are generated on the anode surface. As the water travels through this electrolytic path, these ions move in a direction that separates from the electrode surface, and an acidic layer grows near the anode surface, while an alkaline layer grows near the cathode surface. (Fig. 19). According to Japanese Patent Application Laid-Open No. Hei 6-246272, the movement of ions is based on ion diffusion and electrophoresis. Therefore, by installing a separation member at the outlet portion from the electrolytic passage and branching the flow passage by this, the water flowing in the vicinity of the anode (that is, acidic water) and the water flowing in the vicinity of the cathode (alkaline water) To obtain acidic water and alkaline water. Such a non-diaphragm type electrolytic cell is disclosed in, for example, JP-A-6-246272.

[0004] This diaphragmless electrolytic cell has the following advantages. Since there is no diaphragm, there is a first advantage that microorganisms such as bacteria and mold are not easily generated and maintenance is easy. The distance between the electrodes can be reduced by the amount of no diaphragm between the cathode and the anode. Therefore, there is a second advantage that the electric resistance between the electrodes is small and the power consumption can be reduced. Disadvantages of a non-diaphragm type electrolytic cell are that the anode passage and the cathode passage are not separated by a diaphragm, so that alkali ion water (alkaline water) and acid ion water (acid water) are easily mixed, and high pH performance is obtained. It is difficult.

[0005] Such a non-diaphragm type electrolytic cell has not been produced so far because of poor pH performance, that is, it is difficult to obtain strong alkaline water or strong acidic water. However, various improvements have been made to improve pH performance, and in recent years, non-diaphragm type electrolytic cells have been used.

Although the electrolytic ionized water generator has been classified according to the type of the electrolytic cell so far, it can be classified into a continuous type and a batch type according to the electrolysis method. In the continuous electrolytic ionized water generator, the following problems are common to both the non-diaphragm type and the diaphragm type described above. The continuous electrolytic ionized water generator has a problem that the pH of the obtained electrolytic water is affected by the flow rate of the inflow water. For example, when the inflow flow rate decreases, the time for water to pass through the electrolytic cell increases, and the pH may increase in alkaline water, while the pH may decrease in acidic water. FIG. 20 shows an example of the relationship between the inflow flow rate of water and the pH of the obtained electrolyzed water.

FIG. 20 shows the relationship between the inflow rate and the pH of alkaline water when electrolysis is performed at a constant current regardless of the inflow rate of water into the electrolytic cell. As can be seen from FIG. 20, when the inflow rate decreases, the pH exceeds 10, and the water becomes unsuitable for drinking. In order to stabilize the pH of alkaline water or acidic water obtained by electrolysis, the flow rate of water may be adjusted to be constant. However, it is troublesome to adjust the flow rate of water every time the apparatus is used. Further, when the water pressure itself at the water supply source (usually water supply) is low, it is inevitable that the inflow flow rate decreases.

In order to solve such a problem, Japanese Patent Laid-Open Publication No.
Japanese Patent Application Laid-Open No. 115876 discloses a technique for correcting the pulse width of a switching regulator in accordance with the flow rate of water flowing into an electrolytic cell and changes in water temperature. Also, Japanese Patent Application Laid-Open
-138168 discloses the flow rate of water flowing into an electrolytic cell,
A technique for adjusting the power of electrolysis according to the water pressure is disclosed. Japanese Unexamined Patent Publication No. Hei 6-23360 discloses a technique of changing a voltage application pattern according to the flow rate of water flowing into an electrolytic cell. Also, Japanese Patent Laid-Open No. 6-79279
Japanese Patent Application Laid-Open Publication No. H11-163873 discloses a technique for controlling the voltage or current of electrolysis according to the flow rate of water flowing into an electrolytic cell. Further, Japanese Patent Application Laid-Open No. Hei 6-91265 discloses a technique for controlling the power of electrolysis according to the flow rate of discharged water in a water stopgage of a tip-stop type.

[0009]

First, problems concerning a diaphragmless electrolytic cell will be described. The electrolytic ionized water generator using the non-diaphragm type electrolytic cell described above has the following problems. That is, there is a first problem that is easily affected by the current and the flow rate. In other words, the movement speed of ions (alkali ion water,
The rate at which the layer of acidic water spreads) is approximately proportional to the electrolysis current. As the electrolytic current is increased, the movement speed of ions increases (the growth speed of the layer of alkaline ionized water and acidic water increases). Therefore, if the electrolysis current is too large, the layer of alkaline water and the layer of acid water are mixed before the water has passed through the electrolysis passage. As a result, the alkaline water and the acidic water cannot be separated, and the pH performance decreases.
In addition, when the flow rate of water flowing into the electrolytic cell decreases, the time required to pass through the electrolytic passage increases. As a result, also in this case, similarly, the layer of the alkaline ionized water and the layer of the acidic water are mixed, and the pH performance is reduced.

There is also a second problem that is affected by the conductivity (water quality) of water. That is, the moving speed of the ions is also affected by the conductivity of the raw water in which the electrolysis is performed. The movement speed of ions increases as the conductivity decreases. As a result, before the water finishes passing through the electrolysis passage, the layer of the alkaline water and the layer of the acidic water are merged and mixed, and the two cannot be separated and the pH performance decreases.

Next, the problems of the continuous electrolytic ion generator will be described. First, there is a problem when the current is controlled based on the inflow flow rate. That is, FIG. 21 shows an example of the relationship between the flow rate of water flowing into the electrolytic cell and the flow rate ratio (= flow rate of alkaline water / flow rate of acidic water). According to FIG. 21, as the inflow flow rate decreases, the flow rate ratio decreases significantly. Since the flow ratio between the alkaline water and the acidic water fluctuates according to the inflow flow rate of the water, if the current is controlled based on the inflow flow rate, the pH of the obtained alkaline water and acidic water is reduced by the inflow flow rate. There is a problem that it fluctuates accordingly.

The reason why the flow rate ratio of alkaline water decreases when the flow rate of water in an actual electrolytic ionized water generator decreases is mainly due to the following circumstances. That is, in the electrolytic ionized water generator, the required amount of alkaline water is generally larger than that of acidic water. Therefore, in order to obtain a large amount of alkaline water, a flow restricting mechanism is provided in the acidic water passage to limit the flow rate of the acidic water. In the electrolytic ionized water generator, the outlet of the alkaline water is usually arranged at a position higher than the outlet of the acidic water. When the inflow of water decreases, the passage resistance of both alkaline water and acidic water decreases, while the difference in water pressure due to the difference in the height of the water outlet remains the same. for that reason,
The flow rate (acid flow rate) from the acidic water outlet where the water outlet is low is relatively increased, and the alkaline flow rate is relatively decreased.

Second, there is a problem when the voltage is controlled based on the inflow rate. That is, if the flow rate and the current are constant, the pH of the obtained electrolyzed water is determined according to the current value, and there is almost no influence of the conductivity (FIG. 22).
However, when the voltage is considered to be constant, the current value increases as the conductivity of water increases (FIG. 23). That is,
Depending on the conductivity of the water, the obtained alkaline water or acidic water
H fluctuates. Therefore, simply controlling the voltage in accordance with the inflow flow rate does not provide alkaline water or acidic water having a desired pH.

Third, there is a problem in the case where the electric power is controlled based on the inflow flow rate. That is, although not as large as in the case of constant voltage control, the magnitude of the electrolytic current fluctuates according to the conductivity of water. For this reason, simply controlling the electric power in accordance with the inflow flow rate does not provide alkaline water or acidic water having a desired pH. Fourth, there is a problem when the pulse width and the voltage application pattern are controlled based on the flow rate. That is, similarly to the problem of controlling the voltage based on the inflow flow rate, there is a problem that alkaline water and acidic water having a desired pH cannot be obtained.

As described above, the conventional electrolytic ionized water generator has a problem that the pH fluctuates under the influence of various factors. Therefore, there has been a demand for an electrolytic ionized water generator capable of more stably and efficiently obtaining electrolytic water having a desired pH. Therefore, an object of the present invention is to provide an electrolytic ionized water generator having higher pH performance. Another object of the present invention is to provide an electrolytic ionic water generator that is less affected by fluctuations in the flow rate of flowing water.

[0016]

According to a first aspect of the present invention, there is provided an electrolysis passage which functions as an electrolysis chamber by arranging a plurality of electrodes close to each other and facing each other. In an electrolytic ionic water generator equipped with a non-diaphragm type electrolyzer that conducts electrolysis by flowing an electric current while flowing water, the flow rate of water flowing into the non-diaphragm type electrolyzer, acidic water or alkaline water flowing out of the non-diaphragm type electrolyzer Flow rate detecting means for detecting any of the flow rates, a maximum voltage setting means for setting the maximum value of the electrolytic voltage according to the detection result of the flow rate detecting means, and a voltage lower than the maximum voltage set by the maximum voltage setting means. And electrolytic means for electrolyzing water flowing through the electrolytic passage.

Preferably, the maximum voltage setting means sets the maximum value of the electrolytic voltage to be lower as the flow rate detected by the flow rate detecting means is smaller.

According to a second aspect of the present invention, there is provided an electrolytic ionic water generator for generating acidic water and alkaline water by electrolyzing water, wherein an electrolytic tank provided with a water passage through which water flows, and a water passage through the water passage. A plurality of electrodes arranged in contact with water, power supply means for applying a desired current by applying a desired voltage between the electrodes, and either acidic water or alkaline water flowing out of the electrolytic cell for the purpose A flow rate detection means for detecting the flow rate of the electrolytic ionic water and a power supply means based on the detection result of the flow rate detection means so that the current value per the flow rate of the target electrolytic ionic water is substantially constant. And an electrolysis control means.

Desirably, the electrolysis control means controls the power supply means so that the average current value per output flow rate of the target electrolytic ionic water is constant.

Preferably, the water discharge flow rate detecting means is a flow rate sensor for detecting the flow rate of the target electrolytic ion water downstream from the outlet from the electrolytic cell, or downstream from the liquid outlet from the electrolytic cell. And a pressure sensor for detecting the pressure.

Preferably, the water discharge flow rate detecting means includes a first flow rate detection sensor for detecting a flow rate of water flowing into a water passage of the electrolytic cell, and an unintended electrolytic ionized water flowing out of the electrolytic cell. A second flow rate detection sensor for detecting the flow rate of the incoming water, and a discharge flow rate of the target electrolytic ionic water based on the detection result of the first flow rate detection sensor and the detection result of the second flow rate detection sensor. Arithmetic means.

[0022]

Embodiment 1 of the present invention will be described with reference to the drawings. In the first embodiment, the current is adjusted in accordance with the flow rate of water, and the electrolysis voltage is limited to a predetermined value or less, thereby preventing the movement speed of ions from becoming too high and lowering the pH performance. This is the main feature. First, the outline of the electrolytic ionized water generator will be described. As shown in FIG. 1, the electrolytic ionized water generator includes a calcium addition cylinder 11, a water purifier 12, an electrolytic bath 13, a flow rate sensor 14, and a water pipe connecting these parts (in the figure, drawn as arrows connecting the parts). It is provided with. Further, the electrolytic ionized water generator is provided with an energizing device 2 shown in FIG.
1 is provided.

Raw water supplied from a water supply port (not shown)
Calcium additives such as calcium lactate and calcium glycerophosphate are added in the calcium addition cylinder 11, and subsequently the activated carbon 121 and the hollow fiber membrane 1 are added in the water purifier 12.
By 22, residual chlorine, organic matter, turbidity, etc. are adsorbed and filtered. Thereafter, it is sent to a non-diaphragm type electrolytic cell 13.

The water fed into the electrolytic cell 13 is
The electrolyte flows in a laminar flow through an electrolytic passage formed between the cathode 1 and the cathode 132. At this time, electrolysis is performed by the current supply device 21 flowing a current between the anode 131 and the cathode 132.
By this electrolysis, water near the surface of the anode 131 becomes acidic, while water near the surface of the cathode 132 becomes alkaline. The alkaline water and the acidic water thus generated are separated by a separation unit provided at a downstream portion of the electrolysis passage. The alkaline water is supplied from the alkaline water outlet 133, while the acidic water is supplied from the acidic water outlet 134. Taken out of This is the end of the description of the electrolytic ionized water generator.

As described above, the present embodiment is mainly characterized in that the power supply is controlled by the power supply device 21.
Therefore, hereinafter, the description will focus on the portion related to this characteristic point. As shown in FIG. 2, the energizing device 21 includes a switch input unit 22, a display unit 23, a control unit 24, a power supply unit 25, and a polarity switching unit 26.

The switch input section 22 is provided with a power switch 221 for turning on / off the power to the electrolytic ionized water generator.
And a pH adjustment switch 222 for setting the pH of alkaline water and acidic water. These operations are
The data is output to the control unit 24. Display 23
Is for notifying the user of the state of the device. In the present embodiment, a lamp is provided for displaying the state of the power supply (turning on / off), the set values of the alkaline ionized water and the acidic water, the cleaning of the electrodes, and the like. The display on the display unit 23 is performed according to an instruction from the control unit 24.

The control section 24 controls and controls the entire electrolytic ionic water generator, and includes a memory 242 storing various data and control programs, a CPU 241 and the like. The control unit 24 realizes various functions by the CPU 241 executing a program.
For example, the control unit 24 determines that the detection result of the flow sensor 14 is p
It has a function of determining the optimal electrolysis conditions (electrolysis voltage and current) at that time according to the set value of the H adjustment switch 222 and the like. In the present embodiment, the electrolysis conditions are determined as follows.

As is clear from Ohm's law, the voltage value and the current value cannot be controlled independently of each other.
Depending on the value of the water conductivity, the voltage value and the current value are determined as a combination. Also, as already mentioned, the optimal electrolysis conditions (voltage value, current value) for obtaining alkaline water etc.
Varies depending on the flow rate of water flowing through the electrolytic passage. Therefore, the control unit 24 in the present embodiment includes information necessary for setting the optimal electrolysis conditions in the memory 242. This information includes, for example, parameters defined for each set level of pH used for determining the current value, and voltage values defined for each flow rate.

The control unit 24 determines the electrolysis conditions (voltage value, current value) by performing a predetermined calculation based on the detection result of the flow sensor 14 and the like and the information. The control unit 24 outputs the voltage value thus determined to the voltage control unit 254, and outputs the current value to the current control unit 253. Hereinafter, the voltage value output to the voltage control unit 254 is referred to as a “designated voltage value”. The current value output to the current control unit 253 is referred to as “designated current value”. In addition, the optimal electrolysis conditions here are a layer of alkaline water in the electrolysis passage,
This is from the viewpoint of preventing the two layers from being mixed before reaching the separation part due to the growth rate of the acidic water layer being too fast.

The power supply unit 25 includes an anode 131 and a cathode 13
2 for energizing. The power supply unit 25 in the present embodiment includes an oscillating unit 251, a rectifying / smoothing unit 252, a current control unit 253, a voltage control unit 254, a current detection unit 255,
The configuration includes a voltage detection unit 256.

The oscillating unit 251 is for outputting a pulse. The oscillating unit 251 starts / stops oscillation according to an instruction from the control unit 24.
Further, the pulse width of the oscillating unit 251 in the present embodiment is changed according to the input from the current control unit 253 and the voltage control unit 254. This oscillator 2
51 outputs the generated pulse to the rectifying / smoothing unit 252.

The rectifying / smoothing unit 252 converts a pulse output from the oscillation unit 251 into a direct current. Rectifying smoothing unit 2
The current that has been converted to direct current by the
Is output to the electrolytic cell 13 through the anode 131 and the cathode 1
32. The current detecting unit 255 is for detecting an output current from the rectifying / smoothing unit 252. The current detection unit 255 outputs a detection result to the current control unit 253.

The voltage detector 256 detects the output voltage from the rectifier / smoothing unit 252. The voltage detection unit 256 outputs a detection result to the voltage control unit 254. The current control unit 253 controls the oscillating unit 251 according to the detection result of the current detection unit 255 and the instruction from the control unit 24, so that the current supplied to the electrolytic cell 13 is equal to the current value indicated by the control unit 24 ( (Constant current control) so as not to exceed the specified current value. Specifically, the current control unit 253 compares the detection result (current value) of the current detection unit 255 with the specified current value, and when the detection result is larger than the specified current value, the current By controlling the oscillation pulse width, the current is controlled to be reduced.

As a result, it is possible to conduct electricity at a specified current value (constant current output). The control of the oscillation unit 251 by the current control unit 253 is not always performed, but is performed only when the detection result of the current detection unit 255 is larger than the specified current value. When the detection result of the current detection unit 255 is equal to or smaller than the specified current value, the current control unit 253 does not participate in determining the pulse width at all.

The voltage control unit 254 controls the oscillation unit 2 in accordance with the detection result of the voltage detection unit 256 and an instruction from the control unit 24.
The voltage applied between the electrodes is controlled by the control unit 2 by controlling the control unit 51.
The control (constant voltage control) is performed so as not to exceed the voltage value (designated voltage value) specified by the control unit 4. Specifically, the voltage control unit 254 compares the detection result (voltage value) of the voltage detection unit 256 with the specified voltage value, and when the detection result is higher than the specified voltage value, the oscillation of the oscillation unit 251 The control is performed so as to reduce the energizing voltage by narrowing the pulse width. This enables voltage application (constant voltage output) at a specified voltage value.

The control of the oscillation section 251 by the voltage control section 254 is not always performed, but is performed only when the detection result by the voltage detection section 256 is equal to or higher than the specified voltage value. When the detection result by voltage detection unit 256 is smaller than the specified voltage value, voltage control unit 254 does not participate in determining the pulse width at all. Therefore, the constant voltage control by the voltage control unit 254 and the current control unit 25 described above are performed.
The constant current control by No. 3 is performed in a mutually complementary range (a range of conductivity of water), and they are not performed simultaneously (see FIGS. 3 and 4).

The polarity switching section 26 switches the polarity of the voltage applied to the electrolytic cell 13. The switching of the polarity is performed as necessary to remove the scale deposited on the electrode surface during the electrolysis. The flow sensor 14 (FIG. 1) is for detecting the amount of water flowing into the electrolytic ionic water generator. Specifically, the flow sensor 14 in the present embodiment includes an impeller rotatably disposed in the raw water passage, a Hall element that detects the number of rotations of the impeller, and outputs a pulse. In the flow rate sensor 14 configured as described above, the number of pulses output per unit time changes according to the flow rate.
The “flow rate detecting means” in the claims corresponds to the flow rate sensor 14 in the present embodiment. “Maximum voltage setting means” corresponds to the control unit 24. “Electrolysis means” corresponds to the power supply unit 25. The “maximum voltage” set by the maximum voltage setting means corresponds to a specified voltage value.

Next, the control operation at the time of electrolytic ionic water generation is as follows.
This will be described with reference to FIGS. 3, 4, 5, 6, and 7. FIG. First, control of voltage and current performed by the current control unit 253 and the voltage control unit 254 will be described with reference to FIGS.
This will be described in detail with reference to FIGS. The following description is divided into (1) electrolysis voltage and current when the flow rate is constant, and (2) electrolysis voltage and current fluctuation accompanying the fluctuation of the flow rate. It is assumed that the specified current value has already been input from the control unit 24 to the current control unit 253 in advance. Similarly, it is assumed that the designated voltage value has already been input from the control unit 24 to the voltage control unit 254. (1) Electrolysis voltage and current when flow rate is constant (FIGS. 3 and 4) FIG. 3 is a diagram showing a relationship between conductivity of raw water and electrolysis current when flow rate is constant. FIG. 4 is a diagram showing the relationship between the conductivity of raw water and the electrolytic voltage when the flow rate is constant. here,
Consider the case of pH = X1 shown in FIGS.

When the conductivity of water is equal to or higher than a certain threshold value (μ1), the voltage output from the power supply unit 25 becomes lower than the specified voltage value. Therefore, the constant voltage control by the voltage control unit 254 is not performed. Therefore, in this case, in order to obtain a desired pH value, the current controller 253 performs control (constant current control) so that the electrolytic current per flow rate is constant. That is, the current control unit 253 compares the current value detected by the current detection unit 255 with the specified current value. If the output current (detection result) is larger than the specified current value, the oscillation pulse of the oscillation unit 251 is output. The output current is reduced by narrowing the width.

The lower the conductivity of water, the higher the output voltage (electrolytic voltage) of the power supply unit 25. Then, the conductivity reaches the specified voltage value at the threshold value (μ1). In a region where the conductivity is lower than the threshold value (μ1), the output voltage of the power supply unit 25 exceeds the specified voltage value as it is. In the present embodiment, in order to avoid this, in the region where the conductivity is lower than the threshold value (μ1), the voltage control unit 2
The constant voltage control is performed by 54 so that the output voltage is controlled so as not to exceed the specified voltage value. That is, the voltage control unit 254 calculates the voltage value detected by the voltage detection unit 256,
The output voltage is compared with the specified voltage value, and when the output voltage (detection result) has reached the specified voltage value, the oscillation pulse width of the oscillation unit 251 is narrowed so that the output voltage does not increase any more.

In the region where the constant voltage control is performed, the voltage is controlled so as not to exceed the specified voltage value regardless of the conductivity of the water. As a result, in a region where the conductivity is lower than the threshold value (μ1), the lower the conductivity of water, the smaller the current value. Since the current value in this case is smaller than the specified current value, the constant current control by the current control unit 253 is not performed.

The pH of the obtained electrolyzed water is related to the current value (or the amount of electricity) per unit flow rate. Therefore,
As the designated current value, a different value is set according to the pH. On the other hand, the designated voltage value is constant regardless of the pH. This is because the constant voltage control by the voltage control unit 254 is not performed to obtain electrolyzed water having a desired pH in the first place, but to suppress the overgrowth of the acidic water layer and the alkaline water layer on the electrode surface. Because it is The difference in the set value of pH is reflected in the form of a change in the range of conductivity in which constant voltage control is performed by the voltage control unit 254. For example, as shown in FIGS. 3 and 4, when the set pH level is X2, μ2 is the threshold value.

(2) Regarding changes in electrolytic voltage and current (FIGS. 5 and 6) accompanying a change in flow rate, FIG.
3 is a graph showing a relationship between a flow rate and a specified current value when constant current control by No. 3 is performed, that is, when water conductivity is higher than a threshold value. Here, the constant current control is a current control in which the amount of current per flow is constant. As can be seen from FIG. 5, the designated current value is increased in proportion to the flow rate. This is shown in FIG.
The portion of the constant current control region in the conductivity-current curve drawn in (1) corresponds to the movement in the vertical axis direction (up and down direction) according to the flow rate. Further, since the magnitude of the electrolytic current is related to the pH of the obtained acidic water or alkaline water, the magnitude of the supplied current (specified current value) differs depending on the set value of the pH at that time.

FIG. 6 is a graph showing the relationship between the flow rate and the specified voltage value when the constant voltage control is performed by the voltage control unit 254, that is, when the conductivity of water is lower than the threshold value. It is. As can be seen from FIG. 6, the designated voltage value is increased in accordance with the flow rate. this is,
The portion of the constant-voltage control region in the conductivity-voltage curve illustrated in FIG. 4 corresponds to the movement in the vertical axis direction (vertical direction) according to the flow rate.

The conductivity-voltage curve of FIG. 6 is independent of the set value of pH. This is repeated, but this constant voltage control is not performed for the purpose of performing acidic water or alkaline water having a desired pH in the first place, and the growth rate of the acidic water or alkaline water layer is increased. This is because it is performed in order to suppress the overshoot. As described above, the change of the set value of the pH is such that the threshold value in FIG. 4 moves in the horizontal axis direction (horizontal direction), that is, the range of conductivity in which the constant voltage control is performed is changed. It will be reflected in that.

Next, the determination and output operation of the specified voltage value and the specified current value by the control unit 24 will be described with reference to FIG.
When the power switch 221 is operated, the control unit 24 initializes the state of each unit (step 501), and turns off all outputs again (step 502).
Thereafter, the control unit 24 enters a standby state until the power switch 221 is operated to instruct the start of electrolysis (step 503). In this standby state, whether or not the start of electrolysis has been instructed is constantly checked repeatedly.

In step 503, the power switch 22
In the case where the signal for instructing power-on has been input by operating 1, the control unit 24 causes the display unit 23 to display a message indicating that the power has been turned on, and enters a standby state (step 504). . Here, the “standby state” is a state in which electrolysis is automatically started whenever water of a predetermined amount or more is supplied from a water supply port. Further, the control unit 24 includes the pH adjustment switch 22
It is confirmed whether or not the set level of the pH according to 2 has been changed (step 505). As a result of the confirmation, if the pH setting level has been changed, the newly set pH value is set.
Is stored in the memory 242 (step 50).
6). The set value at this time is displayed on the display unit 23 (step 507).

Subsequently, the controller 24 measures the flow rate of the water being supplied from the water supply port at that time (step 50).
8). This measurement is performed by executing a predetermined calculation using the detection result of the flow sensor 14. Specifically, when water is supplied from the water supply port, the flow sensor 14 sends the control unit 24
Is input with a pulse signal. The time interval of the pulse differs depending on the rotation speed of the impeller constituting the flow rate sensor 14, that is, the flow rate. Therefore, the control unit 2
4 measures the time interval of this pulse, and obtains the flow rate based on the measurement result.

Thereafter, the control unit 24 determines whether or not the flow rate obtained at that time has reached a predetermined value (step 509). If the result of the determination is that the flow rate at that time has reached a predetermined value, a parameter value corresponding to the set level of pH at that time is read from the memory 242 (step 510).
Subsequently, the set value of the current is obtained by integrating the read parameter value and the flow rate value (step 511).
Then, the set value of the obtained current is output to the current control unit 253 of the power supply as the designated current value at that time (step 512).

Subsequently, the control unit 24 reads out the set value of the voltage corresponding to the previously determined flow rate value from the memory 242 (step 513). Then, this voltage value is output to the voltage control unit 254 as a designated voltage value (step 51).
4). Thereafter, the control unit 24 outputs a signal for starting electrolysis to the oscillation unit 251, the current control unit 253, and the voltage control unit 254 (Step 515). Then, in response to this, these units start energizing the electrolytic cell 13.

After step 515, the control section 24 returns to step 503 again and repeats the same processing. In addition,
The control unit 24 sequentially updates the specified current value and the specified voltage value each time a series of processing is repeated. When the supply of the raw water to the water supply port is stopped or the like, it is determined in step 509 that the flow rate has not reached the predetermined value. In this case, the control unit 24 determines in step 516
Then, a signal for stopping electrolysis is output to the oscillation unit 251, the current control unit 253, and the voltage control unit 254. Then
In response, these components stop energizing the electrolytic cell 13. After step 516, the control unit 24 returns to step 503 again.

As described above, according to the electrolytic ionic water generator of the first embodiment, the electrolytic water having a desired pH can be obtained because the electrolytic current is adjusted according to the flow rate of the water supplied to the electrolytic cell 13. . When electrolyzing water with low conductivity,
Since the voltage increases, the current is reduced by limiting the voltage to a predetermined value or less, and the growth of the alkaline water layer and the acidic water layer is prevented from being too fast. In the middle of each other. Therefore, the alkaline water and the acidic water can be reliably separated, and the pH performance does not decrease even when electrolyzing water having low conductivity (when the electrolysis voltage increases). In addition, acidic water and alkaline water having a desired pH can always be generated stably without being affected by water quality (particularly, water quality affecting conductivity).

Furthermore, by lowering the designated voltage value as the flow rate decreases, the growth of the alkaline water layer and the acidic water layer is prevented from becoming too fast. There is no possibility that they are merged and mixed in the middle of the electrolysis passage. Therefore, the pH is stable without being affected by the flow rate fluctuation. In the first embodiment, the specified current value is obtained by performing a predetermined calculation each time. However, this is made into a table in advance and the memory 24
2 may be provided. This table shows the pH
, The flow rate value, the designated voltage value, and the designated current value are defined in association with each other.

In the first embodiment, the constant current control by the current control unit 253 and the constant voltage control by the voltage control unit 254 are independently performed. May be switched according to the conditions. Hereinafter, such an example will be described as a second embodiment.

In the second embodiment, the conductivity of water is measured,
The main feature is to switch between constant voltage control and constant current control according to the measurement result. The contents of the constant voltage control and the constant current control are the same as in the first embodiment. Therefore, the following description is made with reference to FIGS. 8 and 9 focusing on the differences from the first embodiment. The conductivity detection sensor 15 (see FIG. 8) measures the conductivity of water flowing into the electrolytic cell 13. This conductivity detection sensor 1
5 is measured immediately before the electrolytic cell 13, that is, at a stage after the addition of calcium and the like in the calcium addition cylinder 11 to the raw water supplied from the water supply or the like. Therefore, the conductivity of the water in which the electrolysis is actually performed can be more accurately detected.

The control unit 24 is basically the same as in the first embodiment. However, the control unit 24 in the second embodiment
Has a function of instructing the current control unit 253 and the voltage control unit 254 to execute / stop the control based on the detection result of the conductivity detection sensor 15. Specifically, when the detection result (conductivity of water) of the conductivity detection sensor 15 is equal to or higher than the threshold value of the conductivity at the pH level set at that time, the current control unit 253 is settled. The current control is performed, and the constant voltage control by the voltage control unit 254 is stopped. On the other hand, when it is smaller than the conductivity threshold value at the pH level set at that time, the voltage control unit 254 performs the constant voltage control, and the current control unit 253 stops the constant current control.

For this switching, the control unit 24 in the present embodiment has in the memory 242 information specifying the conductivity (threshold) of the water for which control is to be switched for each set level of pH. The power supply unit 25 is basically the same as in the first embodiment. However, the current control unit 253 and the voltage control unit 254 in the second embodiment
The control is executed / stopped according to the instruction from.

The “flow rate detecting means” in the claims corresponds to the flow rate sensor 14 in the present embodiment. “Maximum voltage setting means” corresponds to the control unit 24. “Electrolysis means” corresponds to the power supply unit 25. The “maximum voltage” set by the maximum voltage setting means corresponds to a specified voltage value.

Next, the determination and output operation of the specified voltage value and the specified current value by the control unit 24 in the second embodiment will be described with reference to FIG. When the power switch 221 is operated, the control unit 24 initializes the state of each unit (step 60).
1) Then, all outputs are turned off again (step 602). Thereafter, the control unit 24 enters a standby state until the power switch 221 is operated to instruct the start of electrolysis (step 603). In this standby state, whether or not the start of electrolysis has been instructed is constantly checked repeatedly.

At step 603, the power switch 22
In the case where a signal for instructing power-on has been input by operating 1, the control unit 24 causes the display unit 23 to display a message indicating that power has been turned on, and enters a standby state (step 604). . Here, the “standby state” is a state in which electrolysis is automatically started whenever water of a predetermined amount or more is supplied from a water supply port. Further, the control unit 24 includes the pH adjustment switch 22
It is confirmed whether or not the set level of pH according to 2 has been changed (step 605). As a result of the confirmation, if the pH setting level has been changed, the newly set pH value is set.
Is stored in the memory 242 (step 60).
6). The set value at this time is displayed on the display unit 23 (step 607).

Subsequently, the control unit 24 measures the flow rate of the water being supplied from the water supply port at that time (step 60).
8). This measurement is performed by executing a predetermined calculation using the detection result of the flow sensor 14. Specifically, when water is supplied from the water supply port, the flow sensor 14 sends the control unit 24
Is input with a pulse signal. The time interval of the pulse differs depending on the rotation speed of the impeller constituting the flow rate sensor 14, that is, the flow rate. Therefore, the control unit 2
4 measures the time interval of this pulse, and obtains the flow rate based on the measurement result. Thereafter, the control unit 24 determines whether or not the flow rate obtained at that time has reached a predetermined value (step 609). If the result of the determination is that the flow rate at that time has reached the predetermined value, the detection result of the conductivity detection sensor 15 is subsequently taken in (step 610), and the conductivity value indicated by the detection result is set to the threshold value. Whether or not
That is, it is determined whether to perform the constant voltage control or the constant current control (step 611). The threshold value required for this determination is obtained by reading from the memory 242 according to the set level of the pH at that time. If the result of determination is that the conductivity is equal to or higher than the threshold value, that is, if the current control unit 253 is to perform constant current control, a parameter value corresponding to the set value of pH at that time is read (step 612). ). Subsequently, the set value of the current is obtained by integrating the read parameter value and the flow rate (step 613). Then, the set value of the obtained current is output to the current control unit 253 of the power supply as the designated current value at that time (step 614).

On the other hand, if the result of determination in step 609 is that the conductivity is smaller than the threshold value,
4 reads from the memory 242 the set value of the voltage corresponding to the previously determined flow value (step 615). And
This voltage value is output to the voltage control unit 254 as a specified voltage value (Step 616). After step 614 or step 616, the control unit 24 sends a signal for starting electrolysis to the oscillation unit 251, the current control unit 253, and the voltage control unit 2
The data is output to the terminal 54 (step 617). Then, in response to this, these units start energizing the electrolytic cell 13.

After step 617, the control section 24 returns to step 603 again and repeats the same processing. In addition,
The control unit 24 sequentially updates the specified current value and the specified voltage value each time a series of processing is repeated. When the supply of the raw water to the water supply port is stopped or the like, it is determined in step 609 that the flow rate has not reached the predetermined value. In this case, the control unit 24 determines in step 618
Then, a signal for stopping electrolysis is output to the oscillation unit 251, the current control unit 253, and the voltage control unit 254. Then
In response, these components stop energizing the electrolytic cell 13.

After step 618, the control section 24 returns to step 603 again. As described above, in the electrolytic ionized water generator according to the second embodiment, in addition to the same effects as in the first embodiment, the switching of the control is performed more accurately, so that there is less possibility of malfunction.

Next, the third embodiment is often used as drinking water by controlling electrolysis so that the amount of electricity per flow rate of alkaline water from the electrolytic cell is constant. The main feature is to more accurately control the pH of the alkaline water. This will be described in detail below. The configuration of the electrolytic ionic water generator according to Embodiment 3 is shown in FIG.
0, as shown in FIG.
The configuration is basically the same as that of the first embodiment except for the voltage control unit 254. In the following, description will be made focusing on points different from the first embodiment.

The flow sensor 14 according to the third embodiment
Detects the flow rate of alkaline water. The configuration of the sensor itself is the same as in the first embodiment. The voltage control section 254 according to the third embodiment is for preventing the output voltage of the power supply section 25 from rising above a certain value. However, the “constant value” in this case is set mainly from the viewpoint of circuit protection. Voltage control section 254 in the third embodiment does not receive an input from control section 24. Control unit 2 in the third embodiment
Reference numeral 4 has a function of setting a current value (designated current value) in accordance with the output value of the flow rate sensor 14, that is, the flow rate of the alkaline amount, and instructing the current control unit 253 of the current value.

The “electrolytic cell” in the claims corresponds to the electrolytic cell 13 in the present embodiment.
The “electrode” corresponds to the anode 131 and the cathode 132. "Power supply means" refers to the power supply unit 25, in particular, the oscillation unit 25.
1, realized by the rectifying and smoothing unit 252 and the like. “Outflow flow rate detection means” corresponds to the flow rate sensor 14.
“Electrolysis control means” is realized by the control unit 24, the current control unit 253, and the like.

The operation of the control unit 24 according to the third embodiment will be described with reference to FIG. When the power switch 221 is operated, the control unit 24 initializes the state of each unit (Step 701), and turns off all outputs again (Step 702). Thereafter, the control unit 24 enters a standby state until the power switch 221 is operated to instruct the start of electrolysis (step 703). In this standby state, whether or not the start of electrolysis has been instructed is constantly checked repeatedly.

In step 703, the power switch 22
In the case where the signal for instructing power-on has been input by operating 1, the control unit 24 causes the display unit 23 to display a message indicating that power has been turned on, and enters a standby state (step 704). . Here, the “standby state” is a state in which electrolysis is automatically started whenever water of a predetermined amount or more is supplied from a water supply port. Further, the control unit 24 includes the pH adjustment switch 22
It is confirmed whether or not the set level of the pH according to 2 has been changed (step 705). As a result of the confirmation, if the pH setting level has been changed, the newly set pH value is set.
Is stored in the memory 242 (step 70).
6). The set value at this time is displayed on the display unit 23 (step 707).

Subsequently, the control unit 24 measures the flow rate of the water supplied from the water supply port at that time (step 70).
8). This measurement is performed by executing a predetermined calculation using the detection result of the flow sensor 14. Specifically, when water is supplied from the water supply port, the flow sensor 14 sends the control unit 24
Is input with a pulse signal. The time interval of the pulse differs depending on the rotation speed of the impeller constituting the flow rate sensor 14, that is, the flow rate. Therefore, the control unit 2
4 measures the time interval of this pulse, and obtains the flow rate based on the measurement result.

Thereafter, the control unit 24 determines whether or not the flow rate obtained at that time has reached a predetermined value (step 709). If the result of the determination is that the flow rate at that time has reached a predetermined value, a parameter value corresponding to the set level of pH at that time is read from the memory 242 (step 710).
Subsequently, the set value of the current is obtained by integrating the read parameter value and the flow rate value (step 711).
Then, the obtained current set value is output to the current control unit 253 of the power supply as the designated current value at that time,
The signal for starting electrolysis is supplied to the oscillation unit 251 and the current control unit 2.
53 (step 712). Then, in response thereto, these power supply units 25 start energizing the electrolytic cell 13.

After step 712, the control unit 24 returns to step 703 again and repeats the same processing. In addition,
The control unit 24 sequentially updates the designated current value every time a series of processing is repeated. If the supply of raw water to the water supply port is stopped, it is determined in step 709 that the flow rate has not reached the predetermined value. In this case, the control unit 24 proceeds to step 713 and outputs a signal for stopping electrolysis to the oscillation unit 251 and the current control unit 253. Then, in response to these, each of these parts is placed in the electrolytic cell 1
The power supply to 3 is stopped.

After step 713, the control section 24 returns to step 703 again. As described above, in the third embodiment, the current value (designated current value) of electrolysis is determined according to the flow rate of alkaline water. Therefore, there is no influence from the fluctuation of the flow rate ratio between the acidic water and the alkaline water due to the fluctuation of the flow rate to the electrolytic cell 13. Therefore, alkaline water with more accurate and stable pH can be obtained. For example, as shown in FIG. 18, a constant pH value (for example, 9.6) can be obtained by making the current value per flow rate of alkaline water constant. The above description is about an example in which control is performed based on the flow rate of alkaline water in order to more accurately control the pH of alkaline water. However, the same control can be performed on the acidic water by calculating the flow rate of the acidic water.

The specific configuration of the flow sensor 14 is not limited at all. In addition to the configuration using the impeller described above, for example, the configuration using a pressure sensor is also possible. In the third embodiment, the outflow flow rate is
4, directly detected. However, the method of obtaining the water discharge flow rate is not limited to this. For example, if the correspondence between the flow rate of the water flowing into the electrolytic cell and the flow rate of the alkaline water is known in advance, the flow rate of the water flowing into the electrolytic cell can be determined, and the calculation can be performed based on the flow rate. . Such an example is shown in FIG.

In the first modification, as shown in FIG. 13, the flow rate of water into the electrolytic cell is obtained by the flow rate sensor 14, and the flow rate is calculated based on the flow rate. In this case, the control unit 24
In the memory 242, data indicating the relationship between the inflow flow rate and the outflow flow rate of the alkaline water obtained by the experiment is stored in advance. The inflow flow rate is obtained from the signal of the flow rate sensor 14, and the outflow flow rate of the alkaline water can be known by referring to the data based on the obtained flow rate. In addition, the flow rate of the other water can be determined based on the flow rate of one of the alkaline water and the acidic water and the flow rate of the water flowing into the electrolytic cell. FIG. 14 shows such an example as Modification 2.

In the second modification, the flow rate sensor 14a is disposed at the entrance of the diaphragm type electrolytic cell, and the flow rate sensor 14b is disposed at the pipe for discharging the alkaline water. And the inflow rate of water into the
Further, the control unit 24 is configured to calculate the outflow flow rate of the acidic water based on both the measured values. By the way, in the strongly acidic water generator, the pH is 3 or less and the oxidation-reduction potential is 1000
At mV or more, strong acid water containing a large amount of residual chlorine is generated.

Such strongly acidic water has a disinfecting effect and is used for disinfection. However, since it has strong acidity, large residual chlorine, and a small amount of salt, it is corrosive to metals and resins. It is necessary to use a material that is strong and that is not affected by the strong acid water generator for the pipe passage. General-purpose flow sensors are made of materials that are easily attacked by strong acidic water, and cannot be installed in the passage of acidic water.In addition, special materials must be manufactured to use special materials, expensive parts and materials You need to use it and the cost increases. Therefore, this modified example 2
Is suitable for such a strongly acidic water generator and the like.

It should be noted that the “first” in the claims
The flow rate detection sensor ”in the second modification example corresponds to the flow rate sensor 14a. The “second flow rate detection sensor” corresponds to the flow rate sensor 14b. "Calculation means"
Although not shown in FIG. 14, it corresponds to the control unit 24.

Finally, a more specific example of a circuit configuration in the case of performing electrolysis by passing a pulse current is shown in FIGS.
6 and FIG. FIG. 15 shows a control in which a pulse current is passed through the electrolytic cell, and FIG. 16 shows a waveform at that time. In the example of FIG. 15, the commercial power supply is insulated by the transformer 40 to reduce the voltage, and is rectified by the rectification bridge 41. Furthermore, a smoothing capacitor 4
2 and use as output power to the electrolytic cell. The current is controlled by turning on / off the switch element 43.

If the flow rate of the water supplied from the water supply port is equal to or more than the predetermined value, the control unit 46 measures the time, turns off the clear signal of the integration circuit 44, and
3 is turned on to start energization of the electrolytic cell. The magnitude (current value) of the electrolytic current is detected by the current detection circuit 45. The integration circuit 44 integrates the magnitude of the current detected by the current detection circuit 45.

The control unit 46 compares the output of the integrating circuit 44 with a value obtained by integrating a constant determined by the flow rate value and the pH concentration (set as a set value). As a result of the comparison, when the output of the integration circuit 44 becomes equal to or more than the set value, the switching element 43 is turned off.
Set to F to stop electrolysis. Also, a clear signal is sent to the integration circuit 44 so that integration can be performed again. When the measurement time reaches a predetermined time (T), the integration is started again, and the operation of applying electrolysis is repeated.

In the case of pulse control, the average value (DC component), not the effective value, contributes to the electrolysis of water. Therefore, the same effect can be obtained by repeating ON / OFF at regular time intervals (T) and controlling the average current by PWM control based on the integrated value of the current. FIG. 17 shows waveforms in a case where full-wave rectification is used without using the smoothing capacitor of FIG. 15 and PWM control is performed every half cycle of AC. Also in this case, the same effect as in the case of the waveform shown in FIG. 16 can be obtained.

[0083]

As described above, the electrolytic ionic water generator according to the first aspect of the present invention measures the flow rate of water flowing into the electrolytic cell or the flow rate of target electrolytic ionic water flowing out of the electrolytic cell. In a configuration in which the maximum voltage of electrolysis is reduced as the flow rate decreases, the following effects can be obtained.
That is, as the conductivity decreases, the resistance between the electrodes increases and the voltage increases, but the voltage increase is suppressed to the maximum voltage. Therefore, the electrolytic current is reduced, and alkaline ionized water,
The width of the acidic water layer does not become wider than a predetermined width. Therefore, even if the conductivity is lowered, the layers of the alkaline ionized water and the acidic water are merged and mixed, and the pH performance is not reduced. Furthermore, the lower the conductivity and the lower the flow rate, the lower the maximum voltage, and accordingly the lower the current. Therefore, the layers of the alkaline ionized water and the acidic water grow too much, and the two layers are mixed before being separated, and the pH is increased.
There is no performance degradation.

Further, in the second aspect of the present invention, the electrolysis current value (designated current value) is determined according to, for example, the flow rate of alkaline water. Therefore, there is no influence of the fluctuation of the flow rate ratio between the acidic water and the alkaline water due to the fluctuation of the flow rate to the electrolytic cell. Therefore, alkaline water with more accurate and stable pH can be obtained. For example, if the current value per flow rate of alkaline water is kept constant, a constant pH value can be obtained. In the above description, the control is performed based on the flow rate of the alkaline water in order to more accurately control the pH of the alkaline water. However, the same control can be performed on the acidic water by calculating the flow rate of the acidic water. Further, since the control is performed by the electric current, the change in the pH of the electrolytic ionic water is small even when the conductivity changes.

The second invention desirably determines the desired flow rate of the electrolytic ionic water flowing out of the electrolytic cell based on the flow rate of the electrolytic electrolytic water flowing into the electrolytic cell and the flow rate of the other electrolytic ionic water flowing out of the electrolytic cell. This configuration is useful when the target electrolytic ionic water is strongly acidic or the like. That is,
Since the flow detection sensor does not need to be made of an expensive material that can withstand strong acidity, it is advantageous in terms of device life and device cost.

[Brief description of the drawings]

FIG. 1 is a diagram showing an outline of a water passage section of an electrolytic ionic water generator according to Embodiment 1 of the present invention.

FIG. 2 is a block diagram illustrating a configuration of an energizing device according to the first embodiment.

FIG. 3 is a graph showing a relationship between conductivity and current in the first embodiment.

FIG. 4 is a graph showing a relationship between conductivity and voltage in the first embodiment.

FIG. 5 is a graph showing a relationship between a flow rate and a control current in the first embodiment.

FIG. 6 is a graph showing a relationship between a flow rate and a control voltage in the first embodiment.

FIG. 7 is a flowchart illustrating an operation of a control unit according to the first embodiment.

FIG. 8 is a block diagram illustrating a configuration of an energizing device of the electrolytic ionic water generator according to Embodiment 2 of the present invention.

FIG. 9 is a flowchart illustrating an operation of a control unit according to the second embodiment.

FIG. 10 is a diagram illustrating an outline of a water passage section of an electrolytic ionic water generator according to Embodiment 3 of the present invention.

FIG. 11 is a block diagram showing a configuration of an energizing device according to a third embodiment.

FIG. 12 is a flowchart showing an operation of the control device according to the third embodiment.

FIG. 13 is a diagram showing a water passage section according to a first modification of the third embodiment.

FIG. 14 is a diagram showing a water passage section according to a second modification of the third embodiment.

FIG. 15 is a block diagram showing an example of a circuit configuration in a case where electrolysis is performed by passing a pulse current in the third embodiment.

FIG. 16 is a diagram showing voltage waveforms in the example shown in FIG. 15 in the third embodiment.

FIG. 17 is a diagram showing another example of a voltage waveform in the third embodiment.

FIG. 18 is a graph showing the relationship between the inflow flow rate and the pH when the current value per flow rate is controlled to be constant in the third embodiment.
6 is a graph showing a relationship with the graph.

FIG. 19 is a schematic diagram showing a layer of alkaline ionized water and acidic water generated on the electrode surface in a non-diaphragm type electrolytic cell.

FIG. 20 is a graph showing the relationship between the inflow flow rate and the pH when the current value is controlled to be constant regardless of the flow rate.

FIG. 21 is a graph showing a relationship between a flow rate and a flow rate ratio.

FIG. 22 is a graph showing the relationship between the conductivity of water and the pH of electrolyzed water when the current is controlled to be constant.

FIG. 23 is a graph showing the relationship between the conductivity of water and the electrolytic current under constant voltage control.

[Explanation of symbols]

 13 Electrolyzer 14 Flow rate detecting means 24 Maximum voltage setting means 25 Electrolytic means

Claims (6)

[Claims] 1. A non-diaphragm type electrolysis tank for forming an electrolysis passage functioning as an electrolysis chamber by arranging a plurality of electrodes close to each other and opposing each other to flow an electric current while passing water through the electrolysis passage to perform electrolysis. Flow rate detecting means for detecting a flow rate of water flowing into the diaphragm-free electrolytic cell, a flow rate of acidic water or alkaline water flowing out of the diaphragm-free electrolytic cell, Maximum voltage setting means for setting the maximum value of the electrolysis voltage according to the detection result of the detection means, and electrolysis means for electrolyzing water flowing through the electrolysis passage at a voltage equal to or less than the maximum voltage set by the maximum voltage setting means. And an electrolytic ionized water generator. 2. The electrolytic ionic water generator according to claim 1, wherein the maximum voltage setting means sets the maximum value of the electrolytic voltage to be lower as the flow rate detected by the flow rate detecting means is smaller. . 3. An electrolytic ionic water generator that generates acidic water and alkaline water by electrolyzing water, wherein the electrolytic bath has a water passage through which water flows, and comes into contact with the water flowing through the water passage. A plurality of electrodes arranged in a state, power supply means for applying a desired current by applying a desired voltage between the electrodes, and either an acidic water or an alkaline water flowing out of the electrolytic cell, and the intended electrolytic ions Controlling the power supply means based on a detection result of the water discharge flow rate detecting means for detecting a water discharge flow rate of the water, and a current value per target water discharge flow rate of the electrolytic ionic water so as to be substantially constant; An electrolytic ionized water generator, comprising: 4. The electrolysis control means according to claim 3, wherein the electrolysis control means controls the power supply means so that an average current value per a target flow rate of the electrolytic ionized water becomes constant. Electrolytic ionic water generator. 5. A flow rate sensor for detecting the flow rate of the target electrolytic ionized water downstream of an outlet from the electrolytic cell, or a flow rate sensor for detecting the flow rate of the electrolytic ionized water downstream of the electrolytic cell. The electrolytic ionic water generator according to claim 3 or 4, further comprising a pressure sensor for detecting the pressure. 6. The outflow flow rate detecting means includes a first flow rate detection sensor for detecting a flow rate of water flowing into a water passage of the electrolytic cell, and an electrolytic ionized water which is not intended is supplied from the electrolytic cell. A second flow rate detection sensor for detecting a flow rate flowing out; a detection result of the first flow rate detection sensor;
The electrolytic ionic water generator according to claim 3 or 4, further comprising: a calculating means for calculating the target flow rate of the electrolytic ionic water based on the detection result of the flow rate detection sensor.