JP5135385B2 - Electrolyzed water generator - Google Patents

Description

  The present invention relates to an electrolyzed water generating apparatus that electrolyzes purified water that has passed through a nanofilter to generate alkaline ionized water.

  In the conventional water purifier, a reverse osmosis membrane filter is provided in addition to the filtration filter and the activated carbon filter, and raw water is passed through the water purifier having the reverse osmosis membrane and the membrane filter to obtain purified water. is there. Moreover, in such a water purifier, the quality of the raw water flowing into the reverse osmosis membrane filter and the quality of the purified water that has passed through the reverse osmosis membrane filter are detected, and each water quality is switched and displayed on the display unit. (For example, refer to Patent Document 1).

  In the water purifier having such a configuration, a human can determine the deterioration state of the water purifier from the displayed raw water quality and purified water quality, and the replacement time of the reverse osmosis membrane filter can be determined from the determined deterioration state. I can know.

JP 2002-11468 A

  However, the deterioration of the reverse osmosis membrane filter may be caused by collection of foreign matters such as sand and silica, accumulation of calcium scale, or the like, or may be caused by deterioration or breakage of the reverse osmosis membrane itself.

  However, in the conventional water purifier, since the deterioration state according to the cause cannot be distinguished, even when the reverse osmosis membrane filter can be recovered by washing or the like, the expensive reverse osmosis membrane filter must be replaced. It becomes uneconomical.

  Further, since it is necessary for a human to determine the deterioration state of the reverse osmosis membrane filter based on the displayed water quality, there is a possibility that the criterion for determination varies and the filter replacement time cannot be made constant.

  Therefore, an object of the present invention is to provide an electrolyzed water generating apparatus that can accurately notify the deterioration state of a reverse osmosis membrane filter without depending on human judgment and according to the cause of deterioration.

In order to solve this problem, in the electrolyzed water generating apparatus of the present invention, at least a water purification unit using a nanofilter and purified water that has passed through the water purification unit are introduced into at least a cathode chamber to generate alkaline ionized water. An electrolyzed water generating device comprising: a water quality detection unit that detects the quality of purified water that has passed through the water purification unit; and an initial water quality at the start of use of the water purification unit that is detected by the water quality detection unit A storage unit that stores the initial water quality stored in the storage unit and a current water quality detected by the water quality detection unit to determine a degradation state of the nanofilter, and the control unit determines a display unit for displaying the deterioration state of the nano-filter, based on the deterioration state of the nano-filter determined in the control unit, and a notification unit for notifying the maintenance information of the nanofilter, the quality detection unit, A flow rate sensor disposed on the upstream side of the nanofilter and having a detected flow rate as a water quality determination value; and a pressure pump disposed on the upstream side of the nanofilter and configured as a water quality determination value. It is characterized by that.

  According to the electrolyzed water generating apparatus of the present invention, the quality of the purified water that has passed through the water purification unit using the nanofilter is detected by the water quality detection unit, and the control unit stores the initial water quality stored in the storage unit and the current It is possible to determine the degradation state of the nanofilter by comparing the water quality. At this time, by comparing the initial water quality with the current water quality, it is possible to make a determination according to the cause of the deterioration of the nanofilter, and the deterioration state corresponding to the cause is displayed on the display unit, and the cleaning and replacement timing of the nanofilter is also displayed. The maintenance / inspection information such as can be notified by the notification unit. As a result, the deterioration state of the nanofilter can be accurately notified according to the cause of the deterioration without depending on human judgment.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole block diagram which shows typically the electrolyzed water generating apparatus concerning 1st Embodiment of this invention. In the electrolyzed water generating apparatus concerning a 1st embodiment of the present invention, it is a flow chart for judging the degradation state of a nano filter. In the electrolyzed water generating apparatus concerning a 1st embodiment of the present invention, it is a front view of a display part which displays and announces a deterioration state of a judged water purification part. It is a whole block diagram which shows typically the electrolyzed water generating apparatus concerning 2nd Embodiment of this invention. In the electrolyzed water generating apparatus concerning a 2nd embodiment of the present invention, it is a flow chart for judging a degradation state of a water purification part including a nano filter. It is explanatory drawing which shows the determination table of the washing | cleaning and replacement | exchange of a nano filter used with the flowchart shown in FIG. It is explanatory drawing which shows the determination table of replacement | exchange of the pre filter with which the purification | cleaning part used with the flowchart shown in FIG. It is explanatory drawing which shows the determination table of replacement | exchange of filters other than the nano filter with which the purification | cleaning part used with the flowchart shown in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that similar components are included in the following embodiments. Therefore, in the following, common reference numerals are given to those similar components, and redundant description is omitted.

[First Embodiment]
FIGS. 1-3 is the figure which showed the electrolyzed water generating apparatus 1 concerning 1st Embodiment of this invention.

  As shown in FIG. 1, the electrolyzed water generating apparatus 1 according to this embodiment includes a water purifying unit 2 using a nanofilter 21 and an electrolytic cell that generates alkali ion water by introducing purified water generated by the water purifying unit 2. 3 is generally configured.

  The water purification unit 2 has a main passage P0 into which tap water as raw water is introduced, and in order from the upstream side to the downstream side of the main passage P0, a first prefilter 22, a pressure pump 23, and a first activated carbon. A filter 24, a second pre-filter 25, the nano filter 21 and a second activated carbon filter 26 are arranged.

  The first pre-filter 22 removes large particles and dust mixed in the introduced tap water, and the pressurizing pump 23 pressurizes the water from which the dust is removed (for example, 0.4 MPa). Pumping downstream, the reverse osmotic pressure of the nanofilter 21 is created.

  The first activated carbon filter 24 removes free residual chlorine from the water pressurized by the pressurizing pump 23, and the second prefilter 25 further removes fine particles from the water from which the chlorine has been removed to form the nanofilter 21. The supplied water is pretreated.

  The nanofilter 21 is made of organic matter (for example, trihalomethane, musty odor, agricultural chemicals, etc.), heavy metal ions (for example, lead, chromium, cadmium, mercury, arsenic, etc.), and low molecular weight ion components such as sodium and calcium. The permeated water is removed and permeated, and the permeated water is supplied to the second activated carbon filter 26.

  In the present embodiment, the nanofilter 21 having an NF membrane having a larger permeation hole than the RO membrane is used as the reverse osmosis membrane filter. The nanofilter 21 using this NF film exhibits a high removal rate of 90% or more of particles, organic substances and heavy metals, but has a characteristic that about 10 to 30% of low molecular weight ionic components remain in the permeated water. Have In this case, the permeated water in which the low molecular ions remain has a conductivity of about 60 uS / cm. Further, the concentrated water generated by the nanofilter 21 is discharged outward from the drainage channel P1 provided with the throttle valve 27.

  Although the permeated water of the nanofilter 21 can be sufficiently utilized as purified water, in this embodiment, the permeated water is further passed through the second activated carbon filter 26 to finally remove chlorine and odor components, and then hollow. It is filtered through a microfilter 28 containing a thread membrane filter and supplied to the electrolytic cell 3.

  The electrolytic cell 3 is provided with an anode chamber 32 and a cathode chamber 33 partitioned by an electrolytic diaphragm 31, an anode plate 34 serving as an anode is provided in the anode chamber 32, and a cathode plate serving as a cathode in the cathode chamber 33. 35 and the anode plate 34 and the cathode plate 35 are arranged in a positional relationship facing each other with the electrolytic diaphragm 31 interposed therebetween.

  The main passage P0 downstream of the microfilter 28 is branched into a first branch P2 connected to the anode chamber 32 and a second branch P3 connected to the cathode chamber 33, and the purified water that has passed through the water purification unit 2 is In addition to being introduced into the anode chamber 32 via the first branch path P2, it is introduced into the cathode chamber 3 via the second branch path P3. At this time, the amount of purified water introduced into the anode chamber 32 and the cathode chamber 33 is distributed at a predetermined rate, and in this embodiment, the introduction amount Q1 of the anode chamber 32 and the introduction amount Q2 of the cathode chamber 33. The ratio is Q1: Q2 = 1: 4.

  The purified water introduced into the anode chamber 32 and the cathode chamber 33 is electrolyzed by applying an electrolysis voltage (or electrolysis current) to the anode plate 34 and the cathode plate 35, and the purified water introduced into the anode chamber 32 is Acidic water is supplied from the acidic water outlet 36 to the first discharged water currant 37, and the purified water introduced into the cathode chamber 33 is supplied as alkaline ionized water from the alkaline water outlet 38 to the second discharged water currant 39. Is done. Accordingly, the acidic water can be taken out from the first water discharge currant 37 and the alkali ion water can be taken out from the second water discharge currant 39.

  At this time, by using the nanofilter 21 as the reverse osmosis membrane filter, low-molecular-weight ionic components remain in the purified water introduced into the electrolytic cell 3, and the purified water is electrolyzed without adding an electrolytic aid. Thus, alkali ion water can be generated. In this way, acidic water and alkaline ionized water are generated by electrolysis in the electrolytic cell 3, but alkaline ionized water is exclusively used for drinking, except that acidic water is used for other special purposes. It will be discarded.

  The pressurizing pump 23 and the anode plate 34 and the cathode plate 35 of the electrolytic cell 3 are connected to the power supply unit 4 through wirings H1, H2, and H3, and the power supply unit 4 is controlled by the control circuit 41, so that The pressure pump 23 and the electrolytic cell 3 are driven and controlled.

  Here, in this embodiment, as shown in FIG. 1, the initial stage at the time of the start of use of the water quality detection part 100 which detects the quality of the purified water which passed the water purification part 2, and the water purification part 2 detected by this water quality detection part 100 The control circuit as a control unit that determines the deterioration state of the nanofilter 21 by comparing the storage unit 101 that stores the water quality and the initial water quality stored in the storage unit 101 and the current water quality detected by the water quality detection unit 100. 41, a display unit 102 for displaying the deterioration state of the nanofilter 21 determined by the control circuit 41, and the maintenance inspection information of the nanofilter 21 based on the deterioration state of the nanofilter 21 determined by the control unit 102 And a notification unit 103.

  In the present embodiment, the above-described control circuit 41 that controls the power supply unit 4 of the pressurizing pump 23, the anode plate 34, and the cathode plate 35 is used to determine the deterioration state of the nanofilter 21.

  In addition, the electrolytic cell 3 is used as the water quality detection unit 100 of the present embodiment, and is applied to the anode plate 34 of the anode chamber 32 and the cathode plate 35 of the cathode chamber 33 partitioned by the electrolytic diaphragm 31. The electrical conductivity ρ determined by the voltage value V and the current value I is used as a water quality determination value.

  That is, the opposing anode plate 34 and cathode plate 35 of the electrolytic cell 3 also serve as a sensor for measuring the conductivity ρ, and the control circuit 41 starts using the nanofilter 21, that is, at the initial stage or replacement of the nanofilter 21. The initial conductivity ρ 0 immediately after is stored in the storage unit 101. Then, the cleaning, replacement, or abnormality of the nanofilter 21 is determined according to the ratio between the stored initial conductivity ρ0 and the current conductivity ρ after use (conductivity ratio = ρ / ρ0). And based on the determination result, it will be displayed and notified by the display part 102 and the alerting | reporting part 103 which are shown in FIG.

  At this time, in the electrolytic cell 3, the voltage value V or the current value I applied to the anode plate 34 and the cathode plate 35 is changed so that the pH value of the alkaline ionized water generated in the cathode chamber 33 is substantially constant. Thus, the conductivity ρ, which is a basis for determining the deterioration state of the nanofilter 21, is calculated by the ratio of the voltage value V to the current value I (ρ = V / I). Both the anode plate 34 and the cathode plate 35 will be described below as electrode plates 34 and 35 for convenience.

  That is, in the flowchart of FIG. 2, when control of the control circuit 41 is started with water flow, first, the initial current value I0 and the initial voltage value V0 applied to the electrode plates 34 and 35 are measured in step S1. Based on this, in the next step S2, the initial conductivity ρ0 = f (I0, V0) is calculated, and the initial conductivity ρ0 is stored in the storage unit 101.

  Next, the current value I and the voltage value V applied to the electrode plates 34 and 35 in step S3 are measured, and the process proceeds to the next step S4 to calculate the current conductivity ρ = f (I, V). To do.

  In step S5, a ratio between the stored initial conductivity ρ0 and the current conductivity ρ after use is obtained to determine whether the conductivity ratio (ρ / ρ0) is greater than 1.2. . In other words, when (ρ / ρ0)> 1.2, the degradation state of the nanofilter 21 is relatively small, which is caused by the collection of foreign matters such as sand and silica or the accumulation of calcium scale on the NF film. It can be determined that this is the case. Therefore, when it determines with YES by step S5, it progresses to step S6, while displaying the degradation state of the nano filter 21 by the display part 102, the notification part 103 notifies the necessity of washing | cleaning of the nano filter 21. FIG. If NO is determined in step S5, the process returns to step S3.

  Next, in step S7, it is determined whether or not the conductivity ratio (ρ / ρ0) is greater than 1.5. That is, when (ρ / ρ0)> 1.5, it can be determined that the degradation state of the nanofilter 21 is relatively large, and that the cause is degradation or breakage of the NF film itself. Therefore, even in this case, the process proceeds to step S8, where the display unit 102 displays the degradation state of the nanofilter 21 and the notification unit 103 notifies the necessity of replacement. If NO is determined in step S8, the process returns to step S3.

  Next, in step S9, it is determined whether or not the conductivity ratio (ρ / ρ0) is greater than 2.0. That is, when (ρ / ρ0)> 2.0, it is determined that the nanofilter 21 is abnormal for some reason, and control is performed by stopping the operation of the electrolytic cell 3 and the pressure pump 23 in step S10. It complete | finishes and the supply of the water by the electrolyzed water generating apparatus 1 is stopped. In this embodiment, even when it is determined that there is an abnormality, the notification unit 103 notifies the user.

  As shown in FIG. 3, the display unit 102 includes a power button 104, an electrolysis mode display unit 105, a flow rate display unit 106, and the like in addition to the notification unit 103 described above. The notification unit 103 is provided with a first notification column 103A that notifies the deterioration state of the nanofilter 21, and the first notification column 103A includes a lamp group 103Aa that notifies the usage amount of the nanofilter 21 according to the number of lights. A replacement lamp 103Ab that notifies the replacement and a cleaning lamp 103Ac that notifies the cleaning are provided.

  Accordingly, when it is determined YES in step S7 of the flowchart, the replacement lamp 103Ab is turned on to notify, and when it is determined to be cleaned in step S5, the cleaning lamp 103Ac is turned on to notify. If it is determined in step S9 that there is an abnormality, the replacement lamp 103Ab and the cleaning lamp 103Ac are both blinked and notified.

  The display unit 102 is provided with other lamps and buttons. The description thereof will be given to the second embodiment described below.

  With the above configuration, according to the electrolyzed water generating apparatus 1 of the present embodiment, tap water that is raw water is converted into the first prefilter 22, the pressure pump 23, the first activated carbon filter 24, the second prefilter 25, and the nano After passing through the water purification unit 2 arranged in the order of the filter 21 and the second activated carbon filter 26, purified water is generated, and the purified water is further filtered by the microfilter 28, and a part thereof is introduced into the cathode chamber 33 of the electrolytic cell 3. Alkaline ionized water that is said to be good for health can be generated.

  At this time, in this embodiment, the water quality of the purified water introduced into the electrolytic cell 3 by the water quality detection unit 100 using the electrolytic cell 3, that is, the quality of the purified water that has passed through the purified water unit 2 including the nanofilter 21 is changed to the electrode plate 34, It can be detected by the conductivity ρ obtained from the ratio between the current value I applied to the voltage 35 and the voltage value V. Then, the initial conductivity ρ0 stored in the storage unit 101 by the control circuit 41 is compared with the current conductivity ρ to determine the deterioration state according to the cause of the nanofilter 21, and the determined deterioration state is caused by In response, the information is displayed on the display unit 102 and notified by the notification unit 103.

  Therefore, in this embodiment, since maintenance / inspection information such as the cleaning and replacement timing of the nanofilter 21 is notified by the notification unit 103, the degradation state of the nanofilter 21 is not dependent on human judgment and the cause of the degradation. Can be announced accurately according to As a result, the degradation state of the nanofilter 21 corresponding to the cause, that is, whether the cleaning is required or the replacement needs to be accurately performed, and the unnecessary expensive nanofilter 21 does not need to be replaced. It becomes economical.

  Moreover, in this embodiment, since the electrolyzer 3 provided in the electrolyzed water generating apparatus 1 is used as the water quality detection unit 100, there is no need to newly provide the water quality detection unit 100, which is economical from this point.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is an overall configuration diagram schematically showing the electrolyzed water generating apparatus according to the present embodiment, FIG. 5 is a flowchart for determining the deterioration state of the water purification unit including the nanofilter, and FIG. It is explanatory drawing which shows the determination table of the washing | cleaning and replacement | exchange of a nano filter used with the flowchart shown in a table format.

  FIG. 7 is an explanatory diagram showing, in a tabular form, a prefilter replacement determination table provided in the purification unit used in the flowchart shown in FIG. 5, and FIG. 8 is a diagram of the nano provided in the purification unit used in the flowchart shown in FIG. It is explanatory drawing which shows the determination table of replacement | exchange of filters other than a filter in a table format.

  The electrolyzed water generating device 1A of the present embodiment is mainly different from the electrolyzed water generating device 1 of the first embodiment in that the water quality detection unit 100 includes a flow sensor 5 disposed on the upstream side of the nanofilter 21 and a nanometer. A pressure pump 23 arranged upstream of the filter 21 is added, the flow rate detected by the flow sensor 5 is used as a water quality judgment value, and the driving current value Ip of the pressure pump 23 is used as a water quality judgment value. It is in.

  That is, in the first embodiment, the electrolytic cell 3 is used for the water quality detection unit 100, and the degradation state of the nanofilter 21 is determined based on the conductivity ρ obtained from the current value I and the voltage value V applied thereto. In the embodiment, by adding the flow sensor 5 and the pressure pump 23 to the electrolytic cell 3, the deterioration state of the prefilters 22 and 25 and the activated carbon filters 24 and 26 other than the nanofilter 21 of the water purification unit 2 can be obtained. Judgment is now possible.

  As shown in FIG. 4, the flow rate sensor 5 is provided in the main passage P <b> 0 between the second pre-filter 25 and the nanofilter 21, measures the flow rate Q introduced into the nanofilter 21, and outputs it to the control circuit 41. It is supposed to be. The control circuit 41 stores the initial flow rate Q0 at the start of use of the water purification unit 2 in the storage unit 101, and calculates the flow rate ratio (Q / Q0) with the current flow rate Q after use. The cleaning, replacement, or abnormality of the nanofilter 21 is determined according to the flow rate ratio (Q / Q0) and the conductivity ratio (ρ / ρ0) described in the first embodiment.

  The pressure pump 23 is provided in the water purification unit 2 as described in the first embodiment, and the pressure pump 23 is operated by applying a constant voltage, but the water purification unit 2 is clogged. The load applied to the motor of the pressurizing pump 23 is changed by the pressure increase due to the above. The control circuit 41 measures the current value Ip that fluctuates with the load of the motor at this time, stores the initial current value Ip0 at the start of use of the water purification unit 2 in the storage unit 101, and uses the current value after use. A current ratio (Ip / Ip0) with the current value Ip is calculated. The use state of the first pre-filter 22 and the second pre-filter 25 is determined according to the current ratio (Ip / Ip0) and the flow rate ratio (Q / Q0) measured by the flow rate sensor 5.

  Further, the control circuit 41 calculates the integrated flow rate Qt by integrating the flow rate measured by the flow sensor 5, and according to the integrated flow rate Qt, the first prefilter 22, the first activated carbon filter 24, and the second prefilter 25. And the use condition of the 2nd activated carbon filter 26 is determined.

  That is, in the control circuit 41, the control is executed based on the flowchart shown in FIG. 5. When the control of the control circuit 41 is started along with water flow, first, in step S20, the first implementation is performed. Similar to the configuration, the initial current value I0 and the initial voltage value V0 applied to the electrode plates 34 and 35 are measured. Based on this, in the next step S21, the initial conductivity ρ0 = f (I0, V0) is calculated, and the initial conductivity ρ0 is stored in the storage unit 101.

  In the next step S22, the initial flow rate Q0 is measured by the flow sensor 5, and the initial current value Ip0 of the pressurizing pump 23 is measured. In step S23, these Q0 and Ip0 are stored in the storage unit 101.

  In step S24, the current value I and voltage value V applied to the electrode plates 34 and 35 of the electrolytic cell 3, the current flow rate Q of the flow sensor 5, and the current value of the pressurizing pump 23 are displayed. Ip is measured, and the conductivity ρ {= f (I, V)} of the electrolytic cell 3 is calculated in step S25.

  In step S26, the conductivity ratio (= ρ / ρ0) between the conductivity ρ obtained in step S25 and the initial conductivity ρ0 stored in step S21, the flow rate Q measured in step S24, and the initial flow rate stored in step S23. Based on the flow rate ratio (= Q / Q0) with Q0, the deterioration state (cleaning, replacement and abnormality) of the nanofilter 21 is determined using the determination table (Table 1) shown in FIG. In step S27, the determination result is displayed on the display unit 102 (see FIG. 3), and the notification unit 103 notifies the determination result.

  In this case, since the flow rate ratio (= Q / Q0) is used in addition to the conductivity ratio (= ρ / ρ0), the deterioration state of the nanofilter 21 is determined only by the conductivity ratio (= ρ / ρ0). Compared with the first embodiment, the deterioration state can be known in more detail.

  Next, in step S28, the current ratio (Ip / Ip0) between the current value Ip measured in step S24 and the initial current value Ip0 stored in step S23, the flow rate Q measured in step S24, and stored in step S23. Based on the flow rate ratio (= Q / Q0) with the initial flow rate Q0, the combined use state of the first prefilter 22 and the second prefilter 25 using the determination table (Table 2) shown in FIG. Exchange) is determined. In step S29, the determination result is displayed on the display unit 102 (see FIG. 3) and notified by the notification unit 103.

  In this case, it is possible to know the usage states of the first pre-filter 22 and the second pre-filter 25 that are not determined in the first embodiment. In Table 2, when the water quality is worse than the general normal water quality, the first pre-filter 22 and the second pre-filter 25 are set to reach the end of their service life earlier than the normal water quality. Safety measures for purification performance are taken.

  Next, in step S30, the determination table (Table 3) shown in FIG. 8 is based on the integrated flow rate Qt obtained by integrating the flow rate from the initial flow rate Q0 measured in step S22 to the current flow rate Q measured in step S24. Is used to determine the use state (exchange) of the first prefilter 22, the first activated carbon filter 24, and the second prefilter 25 and the use state (exchange) of the second activated carbon filter 26. In step S31, the determination result is displayed on the display unit 102 (see FIG. 3) and notified by the notification unit 103.

  In this case, the use state of the first prefilter 22, the first activated carbon filter 24, and the second prefilter 25 that are not determined in the first embodiment, and the use state of the second activated carbon filter 26 are known. it can.

  When the nanofilter 21 is normal at step S26, when the first prefilter 22 and the second prefilter 25 are normal at step S28, and when the first prefilter 22 and the first activated carbon filter 24 are at step S30. If it is determined that the second pre-filter 25 and the second activated carbon filter 26 are normal, the process returns to step S24.

  Here, the notification unit 103 provided in the display unit 102 illustrated in FIG. 3 includes the first prefilter 22, the first activated carbon filter 24, and the second prefilter 25 in addition to the notification column 103 </ b> A of the nanofilter 21. A second notification column 103B for notifying the deterioration state and a third notification column 103C for notifying the deterioration state of the second activated carbon filter 26 are provided.

  Similarly to the first notification column 103A, the second notification column 103B and the third notification column 103C are provided with lamp groups 103Ba and 103Ca that notify the usage amount by the number of lighting, and replacement lamps 103Bb and 103Cb that notify the replacement. ing. In addition, reset switches 103Ad, 103Bc, and 103Cc that reset the lamp groups 103Aa, 103Ba, and 103Ca after replacement or cleaning are provided corresponding to the respective columns 103A, 103B, and 103C.

  In the determination table of Table 1 shown in FIG. 6, “cleaning” means the cleaning lamp 103Ac, and “replacement” means the replacement lamp 103Ab. Further, “all extinguished” means that both the cleaning lamp 103Ac and the replacement lamp 103Ab are not lit, and the abnormality is notified by blinking both the lamps 103Ac and 103b.

  In the determination table of Table 2 shown in FIG. 7, “replacement” means the replacement lamp 103Bb, and “all off” means that the replacement lamp 103Bb is not turned on.

  Further, in the determination table of Table 3 shown in FIG. 8, lighting in the columns of the first prefilter, the first activated carbon, and the second prefilter is to turn on the replacement lamp 103Bb, and to turn off is to replace it. The lamp 103Bb is not turned on. Moreover, lighting in the column of the second activated carbon means that the replacement lamp 103Cb is turned on, and “off” means that the replacement lamp 103Cb is not turned on.

  With the above configuration, according to the electrolyzed water generating apparatus 1A of the present embodiment, the water quality detection unit 100 is added to the electrolyzer 3 used in the first embodiment, and the flow sensor 5 and the pressure pump 23 are used. The electrical conductivity ρ of the electrolytic cell 3, the flow rate Q detected by the flow sensor 5, and the drive current value Ip of the pressurizing pump 23 are used as water quality determination values. Thereby, while being able to know in detail the deterioration state of the nanofilter 21, the use state of prefilters such as the first prefilter 22 and the second prefilter 25 that could not be determined in the first embodiment, and The usage state of each upstream filter of the nanofilter 21 including the first prefilter 22, the first activated carbon filter 24, the second prefilter 25, and the like, and the downstream side of the nanofilter 21 such as the second activated carbon filter 26 It is possible to know the usage status of the filters.

  Therefore, it is possible to provide the user with a sense of security that the state of the water purification unit 2 provided in the electrolyzed water generating apparatus 1A can be visually recognized in more detail by the display unit 102 and the notification unit 103. Moreover, it becomes possible to wash | clean each filter in the step before water purification performance deteriorates, and since each filter can be utilized according to the actual condition of use, it becomes more economical.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

  For example, the number of arrangement | positioning, arrangement | positioning parts, and the kind of a pre filter, an activated carbon filter, etc. of a water purification part can be set arbitrarily.

DESCRIPTION OF SYMBOLS 1, 1A Electrolyzed water production | generation apparatus 2 Water purification part 21 Nano filter 3 Electrolytic tank 31 Electrolytic diaphragm 32 Anode chamber 33 Cathode chamber 34 Anode plate (anode)
35 Cathode plate (cathode)
41 Control circuit (control unit)
DESCRIPTION OF SYMBOLS 100 Water quality detection part 101 Memory | storage part 102 Display part 103 Notification part V Voltage value applied to an electrolytic cell I Current value applied to an electrolytic tank ρ Conductivity Q Flow rate Ip Driving current value of a pressure pump

Claims (2)

An electrolyzed water generating apparatus comprising: a water purifying unit using at least a nanofilter; and an electrolytic cell that generates alkaline ionized water by introducing purified water that has passed through the water purifying unit into at least a cathode chamber,
A water quality detection unit for detecting the quality of the purified water that has passed through the water purification unit;
A storage unit for storing an initial water quality at the start of use of the water purification unit detected by the water quality detection unit;
A control unit for comparing the initial water quality stored in the storage unit and the current water quality detected by the water quality detection unit to determine the deterioration state of the nanofilter;
A display unit for displaying a degradation state of the nanofilter determined by the control unit;
Based on the degradation state of the nanofilter determined by the control unit, and a notification unit that notifies the maintenance inspection information of the nanofilter ,
The water quality detection unit is disposed at the upstream side of the nanofilter and the detected flow rate is a water quality determination value, and the pressure sensor is disposed upstream of the nanofilter and the drive current value is a water quality determination value. An electrolyzed water generating device comprising: a pump.   The water quality detection unit is the electrolytic cell in which the conductivity determined by the voltage value and the current value applied to the anode of the anode chamber and the cathode of the cathode chamber partitioned by the electrolytic diaphragm is a water quality determination value. The electrolyzed water generating apparatus according to claim 1, wherein

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