JP2014066051A - Sanitary washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sanitary washing device which surely generates hypochlorite having a high concentration and which can shift to a sterilization operation quickly after washing a private part.SOLUTION: A sanitary washing device includes: a concentration part capable of collecting chloride ions contained in water flowing in a water supply channel and releasing the collected chloride ions; and an electrolysis part provided in a water supply channel on the downstream side of the concentration part, having a pair of electrodes for electrolysis, and electrolyzing water flowing in the water supply channel. The sanitary washing device can execute: a private part washing mode in which water is discharged from a washing nozzle toward a human body private part; and a sterilization and washing mode in which a voltage is applied to the electrodes for electrolysis, water containing chloride ions supplied from the concentration part is electrolyzed, and thus generated hypochlorite is supplied. The concentration part collects chloride ions contained in the water flowing in the water supply channel during execution of the private part washing mode.

Description

  The present invention relates to a sanitary washing device for washing a local part of a human body, and in particular, electrolyzes water containing chloride ions to generate chlorine at the anode, and disinfects sterilized water containing hypochlorous acid by reaction of this chlorine and water. The present invention relates to a sanitary washing device to be generated.

  A sanitary washing device for washing a human body part (such as a buttocks) with water discharged from a nozzle is widely used. As a sanitary washing device having a function of washing the nozzle itself, for example, a device described in Patent Document 1 is known. In the apparatus described in Patent Document 1, it is disclosed that after washing a human body part, tap water is electrolyzed in an electrolytic cell, and the nozzle is washed with sterilized water containing hypochlorous acid generated thereby ( See especially paragraphs 0036-0043).

Japanese Patent No. 3487447 JP 2009-274028 A

  The apparatus described in Patent Document 1 uses tap water as water supplied into the electrolytic cell, but the chloride ion concentration of tap water varies greatly depending on the region. For this reason, when this apparatus is used in an area where the chloride ion concentration of tap water is low, high concentration hypochlorous acid cannot be generated in the electrolytic cell, and the nozzle is not sufficiently cleaned. There is a fear.

  On the other hand, the technique described in Patent Document 2 is known as a technique for generating high-concentration hypochlorous acid by increasing the chloride ion concentration of water. The device described in Patent Document 2 includes chlorination means for killing or sterilizing microorganisms in untreated seawater, and the chlorination means is a concentration that increases the concentration of chloride ions contained in untreated seawater. Means, and is disposed downstream of the concentration means, and electrolyzes seawater with an increased chloride ion concentration to generate hypochlorous acid.

  However, in the case where a technique for increasing the chloride ion concentration of water to produce high-concentration hypochlorous acid is applied to a sanitary washing device as in the device described in Patent Document 2, the human body part is quickly washed. However, the optimum design for shifting to the sterilization operation and preparing for the next use has not been sufficiently studied so far.

  The present invention has been made on the basis of recognition of such problems, and it is intended to provide a sanitary washing apparatus that can reliably produce high-concentration hypochlorous acid and can quickly shift to a sterilization operation after local washing. Is.

  In order to achieve the above object, the present invention is a sanitary washing device that is attached to a toilet and cleans a human body local part, and includes a cleaning nozzle having a spout for discharging water toward the human body local part, and a water supply source A water supply channel that leads water supplied from the water to the water discharge port of the cleaning nozzle, and collection of chloride ions contained in the water that is provided in the water supply channel and flows through the water supply channel, and of the collected chloride ions A detachable concentrating part, provided in the water supply channel downstream of the concentrating part, having a pair of electrolysis electrodes, and applying the voltage between the pair of electrolysis electrodes, An electrolysis unit that electrolyzes the flowing water, a flow method of water in the water supply channel, and a control unit that controls the concentration unit and the electrolysis unit. A local cleaning mode for discharging water and the electrolysis A sterilization washing mode for supplying hypochlorous acid generated by electrolyzing water containing chloride ions supplied from the concentration unit by applying a voltage to the electrode, and the concentration unit, Chloride ions contained in water flowing through the water supply channel are collected during execution of the local cleaning mode.

  In the present invention, the collection of chloride ions by the concentration unit is performed during the execution of the local cleaning mode. Since it is not necessary for the water discharged from the washing nozzle to contain chloride ions to clean the human body part, it is hygienic to collect chloride ions from this water that is led to the water outlet of the washing nozzle. There is no problem with the function of the cleaning device. In addition, after washing the human body by executing the local washing mode, it quickly shifts to the sterilizing washing mode in which water with increased chloride ion concentration is electrolyzed to produce sterilized water containing high concentration hypochlorous acid. can do. That is, according to the present invention, it is possible to quickly generate and supply sterilized water after washing the human body part of the user.

  In the present invention, it is preferable that the water supply channel is a bypass channel in which the main channel and a junction that is branched from the main channel at a branching portion and is provided downstream are joined to the main channel and the concentration unit is provided. And have.

In the local cleaning mode, if the flow rate of water flowing through the concentrating part is high, it is difficult to collect chloride ions contained in the water. The acid may not be obtained.
In order to solve this problem, if the flow rate of water flowing through the concentrating unit is reduced by reducing the flow rate of water discharged from the cleaning nozzle, this causes problems such as deterioration of the cleaning performance and deterioration of the user's feeling of cleaning. To do.

  In the present invention, the water supply path has a main flow path and a bypass flow path that branch at the branch portion, and the concentration section is provided in the bypass flow path. As a result, the water supplied from the water supply source is diverted into the main flow path and the bypass flow path at the branching section, and the chloride ions are sufficiently collected by flowing the low flow rate water through the concentration section of the bypass flow path. Can be easily. Further, since the main flow path and the bypass flow path are joined at the joining portion and the joined water is discharged from the washing nozzle, the flow rate of the water supplied from the washing nozzle to the human body part does not decrease. Therefore, while suppressing the deterioration of the cleaning performance and the deterioration of the user's cleaning feeling in the local cleaning mode, chloride ions are reliably collected in the concentrating unit, and in the subsequent sterilization cleaning mode, a high concentration hypochlorous acid It becomes possible to produce sterilized water containing an acid.

  In the present invention, preferably, the bypass flow channel is branched with an inclination with respect to the water supply channel upstream from the branch portion, and the concentration portion includes a pair of concentration electrodes, By applying a voltage between the electrodes, chloride ions contained in the water flowing through the concentrating part are collected, and provided in a position closer to the branch part than the merging part in the bypass channel. Yes.

  In the present invention, the bypass flow path is inclined and branched with respect to the water supply channel upstream of the branch portion. Therefore, the water flowing into the bypass channel from the branch part is greatly disturbed by flowing through the inclined channel. And this disturbance of water becomes so large that it is near a branch part.

  Here, when applying a voltage to the concentration electrode to collect chloride ions of the water flowing through the concentration section, the greater the disturbance of the water flowing through the concentration section, the closer the chloride ions are to the concentration electrode. Increases and facilitates the collection of chloride ions. Therefore, as in the present invention, by providing the concentrating part at a position closer to the branching part than the merging part in the bypass channel, it is possible to reliably collect sufficient chloride ions by utilizing the turbulence of water. It becomes possible.

  According to the sanitary washing device of the present invention, it is possible to provide a sanitary washing device that can reliably produce high-concentration hypochlorous acid and can quickly shift to a sterilization operation after washing a human body part.

It is a perspective view which shows the toilet bowl in which the sanitary washing apparatus which is one Embodiment of this invention was installed. It is a flow-path system diagram of the sanitary washing apparatus shown in FIG. It is a schematic diagram for demonstrating the electrolytic vessel used for the sanitary washing apparatus shown in FIG. It is a flowchart which shows the procedure which determines a 1st voltage. It is a figure which shows the relationship between electrical conductivity and a 1st voltage. It is a flow-path system figure in local cleaning mode. It is a flow-path system diagram in sterilization washing mode.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  FIG. 1 is a perspective view showing a toilet having a sanitary washing device according to an embodiment of the present invention. As shown in the figure, the sanitary washing device 100 is placed on a flush toilet 110 and used. Then, when the user operates a “wet” switch or the like provided on a remote controller (not shown), the cleaning nozzle 14 previously stored in the casing 101 advances into the bowl portion 111 of the toilet 110 and is cleaned. A human body local part (such as a buttocks) can be washed with water discharged upward from a water outlet 141 provided at the tip of the nozzle 14. When the user who has finished cleaning the human body portion operates a “stop” switch or the like provided on the remote controller, the sanitary cleaning device 100 stops water discharge, and the cleaning nozzle 14 moves backward to enter the casing 101. Stored and ready for next use.

  FIG. 2 is a flow path system diagram of a sanitary washing device according to an embodiment of the present invention. In the drawing, elements not related to sanitary washing and sterilizing water generation are not shown, but the sanitary washing apparatus of this embodiment has a well-known configuration necessary for washing a human body part. I have.

  As shown in FIG. 2, the flow path system 10 includes an upstream flow path 16, a main flow path 17, a bypass flow path 18, and a downstream flow that constitute a water supply path that guides water from a water supply source 12 such as a water pipe to the cleaning nozzle 14. A path 19 is provided. The upstream channel 16 is a channel that communicates the water supply source 12 with the main channel 17 and the bypass channel 18. The downstream flow path 19 is a flow path that connects the main flow path 17, the bypass flow path 18, and the cleaning nozzle 14.

  The main flow path 17 and the bypass flow path 18 are provided so as to branch at the branch portion 20 and join at the junction portion 21. The bypass flow path 18 is inclined and communicated with the upstream flow path 16 by about 90 degrees, and is provided with a concentration tank 6 that is a concentration section. The concentration tank 6 is provided in the bypass flow path 18 at a position closer to the branch portion 20 than the junction portion 21.

  In the downstream flow path 19, an electrolytic cell 1 that is an electrolysis unit and a cleaning valve 28 are provided in order from the upstream side. A branch portion 22 is provided downstream of the electrolytic cell 1 in the downstream flow path 19 and upstream of the cleaning valve 28. A drainage channel 23 that branches off from the downstream channel 19 at the branching portion 22 and extends downward is provided. A discharge valve 30 is provided in the discharge channel 23.

  A cleaning nozzle 14 is provided on the downstream side of the cleaning valve 28 in the downstream flow path 19. The cleaning nozzle 14 is provided with a plurality of water outlets 141 for discharging water toward a human body part, and a flow path for guiding water to the water outlet 141 is provided therein. The cleaning nozzle 14 is connected to the motor 29 via a speed reducer (not shown). By driving the motor 29, the cleaning nozzle 14 is configured to be able to advance and retract in the direction of arrow N between a position where the cleaning nozzle 14 has advanced into the bowl portion 111 of the toilet 110 and a position where it is stored in the casing 101. Yes. At the position where the cleaning nozzle 14 is housed in the casing 101, the cleaning cover 102 of the casing 101 is disposed above the water outlet 141, and the cleaning nozzle 14 is caused by the water discharged from the water outlet 141 and splashed by the cleaning cover 102. It can clean its own outer surface.

  The electrolytic bath 1, the concentration bath 6, the cleaning valve 28, the motor 29, and the discharge valve 30 are connected so as to be able to communicate with the control unit 24. The washing valve 28 opens and closes based on a command from the control unit 24 and controls the inflow of water downstream from the branching unit 22 of the downstream flow path 19. Further, the control valve 28 is configured not only to open and close the flow path 19 but also to adjust the opening degree. The larger the opening degree of the cleaning valve 28, the larger the flow rate and flow velocity.

  The discharge valve 30 opens and closes based on a command from the control unit 24 and controls the inflow of water into the discharge passage 23. A discharge mechanism 32 is configured by the discharge flow path 23 and the discharge valve 30. In the present embodiment, the downstream flow path 19 is branched and the discharge flow path 23 is provided. However, the present invention is not limited to this, and an opening may be provided only on the lower surface of the downstream flow path 19. Further, in the present embodiment, the discharge valve 30 is provided in the discharge flow path 23 and thereby the water flow flowing through the discharge flow path 23 is controlled. However, the present invention is not limited to this, and the discharge flow path 23 is used by using a pump or the like. It is also possible to control the flow of water flowing through. The discharge valve 30 is opened when measuring the electrical conductivity of water in the electrolytic cell 1. The water discharged from the discharge valve 30 is discharged to the bowl portion of the toilet 120.

  The control unit 24 can control a water supply valve (not shown) provided in the water supply source 12 to adjust the amount of water flowing through the upstream flow path 16. The control unit 24 is configured to control the timing of applying a voltage to the pair of concentrating electrodes arranged in the concentrating tank 6 and to change the voltage. Similarly, the control part 24 controls the timing which applies a voltage to a pair of electrode for electrolysis arrange | positioned in the electrolytic cell 1, The voltage is also comprised variably.

  The controller 24 applies a first voltage between the pair of concentrating electrodes of the concentrating tank 6 and releases the applied voltage in order to attract and collect chloride ions to the anode of the concentrating electrode. Thus, the collected chloride ions can be desorbed. Moreover, the control part 24 controls the voltage applied between a pair of electrodes for electrolysis of the electrolytic cell 1, and the voltage which produces | generates the voltage for a measurement mentioned later and hypochlorous acid or hypochlorite ion is applied. To control.

  FIG. 3 is a schematic diagram for explaining the electrolytic cell 1 and the concentration vessel 6. As shown in the figure, the concentration tank 6 has a pair of concentration electrodes 2a and 4a, and is configured so that a voltage can be applied between the concentration electrodes 2a and 4a. The concentration tank 6 only collects chloride ions. Moreover, the electrolytic cell 1 has a pair of electrodes 2b and 4b for electrolysis, and electrolyzes water by applying a voltage between these electrodes 2b and 4b for electrolysis.

When tap water is electrolyzed, reactions of formulas (1) and (2) occur, and oxygen is generated from the anode and hydrogen is generated from the cathode.
Anode: 2H ₂ O → 4H ⁺ + O ₂ + 4e ⁻ (1)
Cathode: 4H ₂ O + 4e ⁻ → 2H ₂ + 4OH ⁻ (2)

Here, by using an electrode coated with platinum / iridium (Pt · IrO 2) as an electrode catalyst, chlorine is generated at the anode as shown in Formula (3).
Anode: 2Cl ⁻ → Cl ₂ + 2e ⁻ (3)

Chlorine becomes chlorine, hypochlorous acid (HClO), and hypochlorite ion (ClO ⁻ ) depending on pH (see Formulas 4 and 5). Hypochlorous acid (HClO) and hypochlorite ion (ClO ⁻ ) have bactericidal power.
Anode: Cl ₂ + H ₂ O → HClO + H ₂ + Cl ⁻ (4)
Anode: HClO → ClO ⁻ + H ⁺ (5)

  Since chloride ions in tap water are attracted to the anode before reaching the reaction of formula (3), chloride ions are applied to the anode surface by applying a voltage that does not cause the reaction of formula (3). It can be collected unreacted.

  Next, the procedure for determining the first voltage by the control unit 24 will be described with reference to FIG. FIG. 4 is a flowchart showing a procedure for determining the first voltage. The flow shown in FIG. 4 is performed at the first energization after the installation of the apparatus or periodically.

  In step S11, the discharge valve 30 is opened to flow from the upstream flow path 16 through the main flow path 17 and the bypass flow path 17 and from the downstream flow path 19 through the electrolytic cell 1 to the discharge flow path 23. In step S12, the electrical conductivity of water is measured using the pair of electrolysis electrodes 2b and 4b provided in the electrolytic cell 1.

  In step S13, the first voltage is determined based on the measured electrical conductivity. FIG. 5 shows an example of the relationship between the electrical conductivity and the first voltage. Such a correspondence relationship is set in advance and stored in the memory of the control unit 24. As illustrated in FIG. 5, it is assumed that the lower the electrical conductivity of water, the lower the chloride ion concentration contained in the supplied water.

  In step S14, the first voltage V1 determined in step S13 is stored in the memory. In step S15, the discharge valve 30 is closed.

  Subsequently, an operation mode of the sanitary washing device 100 will be described with reference to FIGS. 6 and 7. FIG. 6 is a flow path system diagram in the local cleaning mode, and FIG. 7 is a flow path system diagram in the sterilization cleaning mode.

  The local cleaning mode shown in FIG. 6 is an operation mode executed for the user to clean the human body local area after defecation. After the defecation, when the user operates a “wet” switch or the like provided on a remote controller (not shown), the control unit 24 first drives the motor 29, and the washing nozzle 14 previously stored in the casing 101 is placed in the toilet bowl. Advancing into the 110 bowl portion 111.

  Next, the control unit 24 opens the cleaning valve 28 to cause water to flow from the water supply source 12 to the upstream flow path 16. The water that has flowed through the upstream flow path 16 is branched at the branching section 20 and flows into the main flow path 17 and the bypass flow path 18. By this diversion, the diameter and length of each flow path are set so that the flow rate of water in the bypass flow path 18 is smaller than the flow speed of water flowing in the upstream flow path 16 and the main flow path 17. The water flowing into the bypass channel 18 from the branch part 20 flows in the vicinity of the concentration electrodes 2 a and 4 a of the concentration tank 6 provided in the bypass channel 18.

  The water that has flowed through the main flow path 17 and the bypass flow path 18 merges at the merge section 21 provided downstream thereof, and then flows into the downstream flow path 19. The water that has flowed into the downstream flow path 19 passes through the electrolytic cell 1, the branch portion 22, and the cleaning valve 28 in this order, reaches the cleaning nozzle 14, and is discharged from the water outlet 141 that is opened at the tip of the cleaning nozzle 14. Used for local cleaning.

  During execution of the local cleaning mode, the control unit 24 applies the first voltage between the concentrating electrodes 2a and 4a without applying a voltage between the electrolyzing electrodes 2b and 4b shown in FIG. Control as follows. Thereby, the chloride ion contained in the water which flows through the bypass flow path 18 is attracted to the surface of the electrode 4a for concentration which is an anode, and is collected. At this time, the first voltage applied between the concentrating electrodes 2a and 4a is set to such a magnitude that chloride ions can be collected unreacted on the surface of the concentrating electrode 4a.

  As described above, the flow rate of the water flowing through the bypass flow path 18 is smaller than the flow speed of the water flowing through the upstream flow path 16 and the main flow path 17 due to the water flowing through the upstream flow path 16 being diverted at the branch portion 20. Therefore, chloride ions can be efficiently collected on the surface of the concentration electrode 4a.

  Further, since the bypass flow path 18 is inclined and communicated with the upstream flow path 16 by approximately 90 degrees, the water flowing from the upstream flow path 16 through the branch portion 20 into the bypass flow path 18 is Disturbance is caused by flowing through the inclined channel. Thereby, the flow of water in the concentration tank 6 provided at a position close to the branch portion 20 is also disturbed, and the chance of chloride ions approaching the surface of the concentration electrode 4a of the concentration tank 6 increases. Chloride ions can be collected more efficiently.

  Furthermore, since the water that has flowed through the main flow path 17 and the bypass flow path 18 is merged at the merge section 21 provided downstream thereof, the flow rate of the water that has flowed into the upstream flow path 16 from the water supply source 12 is reduced. Without being discharged, the water can be discharged from the water outlet 141 of the cleaning nozzle 14 toward the local body part. Therefore, according to the local cleaning mode of the present embodiment, it is possible to achieve both the cleaning performance and the user's feeling of cleaning and the collection of chloride ions in the concentration electrode 4a at a high level.

  The sterilization cleaning mode shown in FIG. 7 is an operation mode that is executed after the execution of the local cleaning mode, and is executed for cleaning the outer surface of the cleaning nozzle 14 with sterilizing water containing hypochlorous acid. When the user operates a “stop” switch or the like provided on a remote controller (not shown) during the execution of the local cleaning mode, the control unit 24 first closes the cleaning valve 28 and water from the water outlet 141 of the cleaning nozzle 14. Stop dispensing. Next, the control unit 24 drives the motor 29 to retract the cleaning nozzle 14 that has been advanced into the bowl portion 111 of the toilet 110 until then.

  When the retreated cleaning nozzle 14 is accommodated in the casing 101, the control unit 24 opens the cleaning valve 28 again and allows water to flow from the water supply source 12 into the upstream flow path 16. The water that has flowed through the upstream flow path 16 is branched at the branching section 20 and flows into the main flow path 17 and the bypass flow path 18. The water flowing into the bypass channel 18 from the branch part 20 passes through the vicinity of the concentration electrodes 2 a and 4 a of the concentration tank 6 provided in the bypass channel 18.

  The water that has flowed through the main flow path 17 and the bypass flow path 18 merges at the merge section 21 provided downstream thereof, and then flows into the downstream flow path 19. The water that has flowed into the downstream flow path 19 flows in the order of the electrolytic cell 1, the branch portion 22, and the cleaning valve 28, reaches the cleaning nozzle 14, and is discharged from the water outlet 141 provided at the tip of the cleaning nozzle 14. The water discharged from the water outlet 141 bounces off the cleaning cover 102 of the casing 101 disposed above, and the outer surface of the cleaning nozzle 14 itself is cleaned with the water.

  At this time, the control unit 24 does not apply a voltage between the concentrating electrodes 2a and 4a shown in FIG. Thereby, it flows into the concentration tank 6 through the bypass channel 18 and is collected on the surface of the concentration electrode 4a (anode) by the water flowing in the vicinity of the concentration electrode 4a (anode) during execution of the local cleaning mode. Chloride ions are desorbed and flowed downstream. Therefore, water containing a large amount of chloride ions flows downstream of the concentration tank 6 in the bypass channel 18 and heads toward the junction 21.

  This water containing a large amount of chloride ions merges with the water flowing through the main channel 17 at the junction 21 and flows into the downstream channel 19, and further enters the electrolytic cell 1 provided in the downstream channel 19. Inflow.

  At this time, the control unit 24 applies a voltage between the electrodes 2b and 4b for electrolysis shown in FIG. Therefore, in the electrode 4b (anode) for electrolysis, hypochlorous acid can be reliably generated using water containing a large amount of the above-mentioned chloride ions, and the outer surface of the cleaning nozzle 14 itself can be sterilized. it can.

  The control unit 24 sterilizes the outer surface of the cleaning nozzle 14 and then closes the cleaning valve 28 and stops the application of voltage between the electrolysis electrodes 2b and 4b to end the sterilization cleaning mode. Since the outer surface is sterilized by executing the sterilization cleaning mode, the cleaning nozzle can be kept clean and ready for the next use.

  In the present embodiment, the sterilizing water containing hypochlorous acid generated in the electrolytic cell is discharged from the water outlet of the cleaning nozzle, and the outer surface of the cleaning nozzle is cleaned. Is not limited to this. For example, a sanitary cleaning device casing or the like is provided with a water outlet separate from that of the cleaning nozzle, and the sterilizing water is discharged from the water outlet to the bowl portion of the toilet, and the bowl portion is sterilized. Also good.

1 Electrolysis tank (electrolysis section)
2, 4 Electrode 6 Concentration tank (concentration part)
DESCRIPTION OF SYMBOLS 10 Flow path system 14 Cleaning nozzle 17 Main flow path 18 Bypass flow path 20 Branch part 21 Merge part 22 Drain flow path 28 Washing valve 30 Discharge valve 32 Discharge mechanism 100 Sanitary washing apparatus 110 Toilet bowl 141 Spout

Claims (3)

A sanitary washing device that is attached to a toilet and cleans the human body part,
A cleaning nozzle with a spout for discharging water toward the human body part;
A water supply channel for leading water supplied from a water supply source to the water outlet of the washing nozzle;
A concentration unit provided in the water supply channel, capable of collecting chloride ions contained in water passing through the water supply channel, and capable of desorbing the collected chloride ions;
An electrolysis unit that is provided in the water supply channel downstream of the concentration unit, has a pair of electrolysis electrodes, and electrolyzes water flowing through the water supply channel by applying a voltage between the pair of electrolysis electrodes; ,
A flow of water in the water supply channel, and a control means for controlling the concentration unit and the electrolysis unit,
The control means electrolyzes water containing chloride ions supplied from the concentrating unit by applying a voltage to the electrode for electrolysis by applying a local cleaning mode in which water is discharged from the cleaning nozzle toward a local body part. And sterilization cleaning mode to supply hypochlorous acid generated by
The said concentration part collects the chloride ion contained in the water which flows through the said water supply channel during execution of the said local cleaning mode, The sanitary washing apparatus characterized by the above-mentioned.   The water supply path has a main flow path, and a bypass flow path that is branched from the main flow path at a branching portion and merges with the main flow path at a merging portion provided on the downstream side, and the concentration portion is provided. The sanitary washing device according to claim 1. The bypass flow path is inclined and branched with respect to the water supply channel upstream from the branch part,
The concentrating part has a pair of concentrating electrodes and collects chloride ions contained in water flowing through the concentrating part by applying a voltage between the pair of concentrating electrodes, The sanitary washing device according to claim 2, wherein the sanitary washing device is provided in a position closer to the branch portion than the junction portion in the bypass flow path.

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