JP6988228B2 - Sanitary cleaning equipment - Google Patents

Description

Aspects of the invention generally relate to sanitary cleaning equipment.

In sanitary cleaning equipment, scale may precipitate in the water supply channel from the water supply source to the spout such as a nozzle. For example, in areas where hard water is used, scale is likely to precipitate. If scale is deposited in the water supply channel, the water supply channel may be blocked and water may not be discharged from the spout. In order to prevent this, a method is known in which the precipitated scale is dissolved by a removing agent (removing liquid) put into the water supply channel by the user to remove the scale.

Japanese Unexamined Patent Publication No. 7-324565

When removing the scale deposited in the water supply channel, a filling operation is performed in which the water supply channel is filled with the removing agent by flowing the charged removing agent from the water supply channel to the spout. Further, after the filling operation, a discharge operation is performed in which water is flowed from the water supply channel to the spout and the removing agent is discharged from the water supply channel. In such a filling operation and a discharging operation, the removing agent may be discharged from the spout. Therefore, if there is a user in the toilet room where the sanitary cleaning device is installed during the filling operation or the discharging operation, there is a possibility that the removing agent may be accidentally applied to the user.

The present invention has been made based on the recognition of such a problem, and an object of the present invention is to provide a sanitary cleaning device capable of suppressing the removal agent from being applied to the user.

The first invention is a sanitary cleaning device provided in a toilet room, which comprises a nozzle for discharging water, a water supply channel for supplying the water to the nozzle, a tank provided in the water supply channel, and the water supply channel. A removing agent charging section capable of charging the removing agent that dissolves the scale deposited in the tank into the tank, and a filling operation of filling the removing agent charged in the tank on the downstream side of the water supply channel from the tank. A control unit that executes a scale removal mode having a standby operation of waiting for a predetermined time after the filling operation and a discharging operation of discharging the removing agent from the water supply channel after the waiting operation, and detecting a human body in the toilet room. The control unit comprises a human body detecting means for detecting the human body, and the control unit suspends the execution of the scale removing mode when the human body detecting means detects the human body during the execution of the scale removing mode. It is a cleaning device.

According to this sanitary cleaning device, when the human body detecting means detects the human body in the toilet room, the scale removal mode is temporarily stopped, so that the removing agent is ejected from the nozzle when the user is in the toilet room. Can be prevented. As a result, it is possible to prevent the removing agent from being accidentally applied to the user.

A second aspect of the invention is the sanitary cleaning device according to the first aspect, further comprising a toilet seat, wherein the human body detecting means is a seating detecting means for detecting the seating of a user on the toilet seat.

According to this sanitary cleaning device, the scale removal mode is continued until the user sits down, so that the scale removal mode is set as compared with the case where the scale removal mode is paused by detecting the user's entry or approach, for example. The frequency of pausing is low. As a result, it is possible to suppress a long time until the completion of the scale removal mode. In addition, according to this sanitary cleaning device, the scale removal mode is continued until the user is seated, so that the scale removal mode is used as compared with the case where the user's entry or approach is detected and the scale removal mode is temporarily stopped. If a person enters the toilet room just before the end of the scale removal mode, there is a high possibility that the sanitary cleaning device can clean the local area. Therefore, usability can be improved.

A third aspect of the invention is the sanitary cleaning device according to the first aspect, further comprising a toilet seat, wherein the human body detecting means is a toilet seat opening / closing detecting means for detecting the opening / closing of the toilet seat by a user.

According to this sanitary cleaning device, the scale removal mode is continued until the user opens and closes the toilet seat. Therefore, the scale removal mode is compared with the case where the scale removal mode is temporarily stopped by detecting the user's entry or approach. Mode pauses infrequently. As a result, it is possible to suppress a long time until the completion of the scale removal mode. In addition, according to this sanitary cleaning device, the scale removal mode is continued until the user opens and closes the toilet seat, so that the scale removal mode is temporarily stopped by detecting the user's entry or approach. If the user enters the toilet room just before the end of the scale removal mode, there is a high possibility that the sanitary cleaning device can clean the local area. Therefore, usability can be improved.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the control unit stops the human body detecting means from detecting the human body when the filling operation or the discharging operation is temporarily stopped. The sanitary cleaning device is characterized in that the filling operation or the discharging operation during the temporary stop is restarted after a lapse of a predetermined time.

According to this sanitary cleaning device, the filling operation or the discharging operation is performed at a timing when the user is farther from the nozzle, as compared with the case where the filling operation or the discharging operation is restarted immediately after the human body detecting means stops detecting the human body. It will be resumed. As a result, it is possible to further suppress the application of the removing agent to the user.

A fifth aspect of the invention is the casing in which the nozzle is housed, the casing having an opening for advancing the nozzle to the outside of the casing, and the casing in any one of the first to fourth aspects. The control unit further includes a shutter that opens and closes the opening in accordance with the advancement and retreat of the nozzle, and the control unit has the tip of the nozzle located outside the casing during the discharge operation or the filling operation. It is a sanitary cleaning device characterized in that the nozzle is arranged so that the spout of the nozzle does not protrude from the shutter.

According to this sanitary cleaning device, since the water discharge port of the nozzle does not protrude from the shutter during the discharge operation or the filling operation, it is possible to suppress the removal agent from the nozzle from being discharged in front of the shutter. Therefore, it is possible to further suppress the application of the removing agent to the user. Further, since the tip of the nozzle is located outside the casing, the user can easily visually recognize that the filling operation or the discharging operation is being executed. As a result, it is possible to prevent the user from inadvertently approaching the sanitary cleaning device. Therefore, it is possible to further suppress the application of the removing agent to the user.

A sixth aspect of the invention is the hygiene aspect of any one of the first to fifth aspects, wherein the control unit continues the standby operation while the human body detecting means detects the human body. It is a cleaning device.

According to this sanitary cleaning device, since the standby operation is continued even while the human body detecting means is detecting the human body, it is possible to suppress a long time until the completion of the scale removal mode. Therefore, usability can be improved.

According to a seventh aspect of the present invention, in any one of the first to sixth aspects, the control unit retracts the nozzle when the human body detecting means detects the human body during the filling operation or the discharging operation. It is a sanitary cleaning device characterized by.

According to this sanitary cleaning device, since the nozzle is retracted to move away from the user, it is possible to further suppress the removal agent from being applied to the user.

According to the aspect of the present invention, there is provided a sanitary cleaning device capable of suppressing the removal agent from being applied to the user.

It is a perspective view which shows the toilet apparatus provided with the sanitary cleaning apparatus which concerns on embodiment. It is a block diagram which illustrates the composition of the main part of the sanitary cleaning apparatus which concerns on embodiment. It is a top view which illustrates the casing of the sanitary cleaning apparatus which concerns on embodiment. It is a flowchart which illustrates the scale removal mode of the sanitary cleaning apparatus which concerns on embodiment. It is a flowchart which illustrates the scale removal mode of the sanitary cleaning apparatus which concerns on embodiment. 6 (a) and 6 (b) are sectional views illustrating a water discharge portion of the sanitary cleaning device according to the embodiment. It is a schematic diagram which illustrates the open type tank of the sanitary cleaning apparatus which concerns on embodiment. 8 (a) and 8 (b) are schematic views illustrating a flow path switching portion of the sanitary cleaning device according to the embodiment. 9 (a) and 9 (b) are timing charts illustrating the operation of the flow path switching unit of the sanitary cleaning device according to the embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing, similar components are designated by the same reference numerals and detailed description thereof will be omitted as appropriate.
FIG. 1 is a perspective view showing a toilet device provided with the sanitary cleaning device according to the embodiment.
As shown in FIG. 1, the toilet device includes a Western-style sitting toilet bowl (hereinafter simply referred to as a “toilet bowl” for convenience of explanation) 800, and a sanitary cleaning device 100 provided on the Western-style sitting toilet bowl (hereinafter simply referred to as “toilet bowl”) 800. The toilet bowl 800 may be a "floor-standing type" installed on the floor of the toilet room, or may be a "wall-mounted type" installed on the wall surface or lining of the toilet room. The sanitary cleaning device 100 includes a casing 400, a toilet seat 200, and a toilet lid 300. The toilet seat 200 and the toilet lid 300 are pivotally supported with respect to the casing 400 so as to be openable and closable.

Inside the casing 400, there is a built-in body cleaning function unit that realizes cleaning of the "buttocks" of the user sitting on the toilet seat 200. Further, for example, the casing 400 is provided with a seating detection sensor 404 that detects that the user has sat on the toilet seat 200. When the seating detection sensor 404 detects a user sitting on the toilet seat 200, when the user operates an operation unit 500 (see FIG. 2) such as a remote controller, a cleaning nozzle (for convenience of the following description, simply "nozzle"). 473) can be advanced into the bowl 801 of the toilet bowl 800. In the sanitary cleaning device 100 shown in FIG. 1, the nozzle 473 represents a state in which the nozzle 473 has advanced into the bowl 801.

The nozzle 473 discharges water toward the local part of the human body to clean the local part of the human body. A plurality of spouts 31 (bidet washing spout 31a, buttocks washing spout 31b, etc.) are provided at the tip of the nozzle 473. The nozzle 473 can inject water from the bidet washing spout 31a provided at the tip thereof to wash a female local part of a woman sitting on the toilet seat 200. Alternatively, the nozzle 473 can inject water from the buttocks washing spout 31b provided at the tip thereof to wash the "buttocks" of the user sitting on the toilet seat 200.

In the specification of the present application, the term "water" includes not only cold water but also heated hot water. Further, in the present specification, "forward", "rear", "upper", and "lower" refer to the direction seen from the user sitting on the toilet seat 200 with his back to the open toilet lid 300. ..

FIG. 2 is a block diagram illustrating a configuration of a main part of the sanitary cleaning device according to the embodiment.
FIG. 2 also shows the main components of the water channel system and the electrical system.
FIG. 3 is a plan view illustrating the casing of the sanitary cleaning device according to the embodiment.
In FIG. 3, the casing 400 and the inside thereof are schematically shown.
The sanitary cleaning device 100 has a water discharge unit 470 that discharges water. The water discharge unit 470 has a nozzle 473 (cleaning nozzle), a nozzle cleaning chamber 478, and a spray nozzle 479. The water discharge portion 470 is arranged (or stored) in the casing 400.

The sanitary cleaning device 100 has a water supply channel 20 arranged in the casing 400. The water supply channel 20 supplies water supplied from a water supply source 10 such as a water supply or a water storage tank to a water discharge unit 470. That is, the water supply channel 20 guides the water discharged from the water discharge unit 470 to the water discharge unit 470.
The water supply channel 20 includes a solenoid valve 431, a pressure regulating valve 432, a check valve 433, an open tank 434 (backflow prevention mechanism), a cleaning pump 436, a heat exchanger unit 440, and a flow rate sensor 442 (flow rate detection) described below. Means), electrolytic cell unit 450, vacuum breaker 452, flow path switching section 472 (flow path switching means), and a plurality of pipes connecting these sections are provided.

A solenoid valve 431 is provided on the upstream side of the water supply channel 20. The solenoid valve 431 is a solenoid valve that can be opened and closed, and controls the supply of water based on a command from the control unit 405 provided inside the casing 400. In other words, the solenoid valve 431 opens and closes the water supply channel 20. By opening the solenoid valve 431, the water supplied from the water supply source 10 flows to the downstream side.

A pressure regulating valve 432 is provided downstream of the solenoid valve 431. The pressure regulating valve 432 adjusts the pressure in the water supply channel 20 to a predetermined pressure range when the water supply pressure is high. A check valve 433 is provided downstream of the pressure regulating valve 432. The check valve 433 suppresses the backflow of water to the upstream side of the check valve 433 when the pressure in the water supply channel 20 drops.

An open tank 434 (backflow prevention mechanism) is provided downstream of the check valve 433. The open tank 434 is provided on the path of the water supply channel 20 and stores the water flowing in through the check valve 433 inside. Further, the open tank 434 physically blocks the flow of water from the downstream side to the upstream side of the open tank 434 in the water supply channel 20 by forming an air gap inside. In other words, the open tank 434 cuts off the portion downstream and the portion upstream of the open tank 434 of the water supply channel 20. As a result, the open tank 434 reliably prevents the washing water in the nozzle 473 and the sewage collected in the bowl 801 from flowing back to the water supply source 10 (clean water) side.

A cleaning pump 436 is provided downstream of the open tank 434. The cleaning pump 436 drains the water stored in the open tank 434. The cleaning pump 436 pumps out the water stored in the open tank 434. As a result, the cleaning pump 436 supplies the water stored in the open tank 434 to the water supply channel 20 downstream of the open tank 434. The cleaning pump 436 is connected to the control unit 405. The drive and stop of the drive of the cleaning pump 436 are controlled by the control unit 405. The cleaning pump 436 may be any pump capable of draining the water stored in the open tank 434.

A heat exchanger unit 440 (heating unit) is provided downstream of the cleaning pump 436. The heat exchanger unit 440 has a heater and heats the water supplied from the open tank 434 via the cleaning pump 436 to raise the temperature to, for example, a specified temperature. That is, the heat exchanger unit 440 produces hot water.

The heat exchanger unit 440 is an instantaneous heating type (instantaneous type) heat exchanger using, for example, a ceramic heater, and defines water in a shorter time than a hot water storage heating type heat exchanger using a hot water storage tank. The temperature can be raised to the temperature. The heat exchanger unit 440 is not limited to the instantaneous heating type heat exchanger, and may be a hot water storage heating type heat exchanger. Further, the heating unit is not limited to the heat exchanger, and may be one using another heating method, for example, one using microwave heating.

The heat exchanger unit 440 is connected to the control unit 405. The control unit 405 raises the temperature of water to the temperature set by the operation unit 500 by controlling the heat exchanger unit 440 in response to the operation of the operation unit 500 by the user, for example.

A flow rate sensor 442 is provided downstream of the heat exchanger unit 440. The flow rate sensor 442 detects the flow rate of water flowing through the water supply channel 20. The flow rate sensor 442 is connected to the control unit 405. The flow rate sensor 442 inputs the flow rate detection result to the control unit 405.

An electrolytic cell unit 450 is provided downstream of the flow rate sensor 442. The electrolytic cell unit 450 produces a liquid (functional water) containing hypochlorous acid from tap water by electrolyzing the tap water flowing inside. The electrolytic cell unit 450 is connected to the control unit 405. The electrolytic cell unit 450 generates functional water based on the control by the control unit 405.

The functional water generated in the electrolytic cell unit 450 may be, for example, a solution containing metal ions such as silver ions and copper ions. Alternatively, the functional water generated in the electrolytic cell unit 450 may be a solution containing electrolytic chlorine, ozone, or the like. Alternatively, the functional water generated in the electrolytic cell unit 450 may be acidic water or alkaline water.

A vacuum breaker (VB) 452 is provided downstream of the electrolytic cell unit 450. The vacuum breaker 452 has, for example, a flow path for flowing water, an intake port for taking air into the flow path, and a valve mechanism for opening and closing the intake port. The valve mechanism closes the intake port when water is flowing in the flow path, and opens the intake port when the flow of water is stopped to take in air into the flow path. That is, the vacuum breaker 452 takes in air into the water supply channel 20 when there is no water flow in the water supply channel 20. For the valve mechanism, for example, a float valve is used.

The vacuum breaker 452 takes in air into the water supply channel 20 as described above, thereby promoting drainage of a portion downstream of the vacuum breaker 452 of the water supply channel 20, for example. The vacuum breaker 452 facilitates drainage of the nozzle 473, for example. As described above, the vacuum breaker 452 drains the water in the nozzle 473 and takes in the air in the nozzle 473, so that, for example, the washing water in the nozzle 473 and the sewage collected in the bowl 801 can be used as the water supply source 10 ( Suppresses backflow to the clean water) side.

A flow path switching portion 472 is provided downstream of the vacuum breaker 452. The flow path switching unit 472 opens / closes / switches the water supply to the nozzle 473 and the nozzle cleaning chamber 478. In this example, the flow path switching unit 472 also functions as a flow rate adjusting unit that adjusts the flow rate. However, the flow rate adjusting unit and the flow path switching unit may be separate units. The flow path switching unit 472 is connected to the control unit 405 and is controlled by the control unit 405.

A water discharge unit 470 (nozzle 473, nozzle cleaning chamber 478, and spray nozzle 479) is provided downstream of the flow path switching unit 472. The nozzle 473 receives a driving force from the nozzle motor 476 and moves in and out of the bowl 801 of the toilet bowl 800. That is, the nozzle motor 476 advances and retreats the nozzle 473 based on the command from the control unit 405.

As shown by the solid line in FIG. 3, the nozzle 473 is housed in the casing 400 when not in use. As shown by the broken line in FIG. 3, the nozzle 473 discharges water from the spout 31 in a state of advancing forward and downward from the casing 400 to clean the human body local part.

The nozzle cleaning chamber 478 cleans the outer peripheral surface (body) of the nozzle 473 by injecting functional water or water from the spout 32 provided inside the nozzle cleaning chamber 478. The spray nozzle 479 sprays the washing water and the functional water into a mist from the spout 33 provided at the tip thereof into the bowl 801. In this example, a spray nozzle 479 is provided separately from the nozzle 473 for cleaning the human body. Not limited to this, the nozzle 473 may be provided with a spout for spraying the mist-like liquid onto the bowl 801.

Further, downstream of the flow path switching portion 472, a buttocks cleaning flow path 21, a soft cleaning flow path 22, and a bidet cleaning flow path 23 are provided. The tail cleaning flow path 21 and the soft cleaning flow path 22 guide the water supplied from the water supply source 10 via the water supply channel 20 and the functional water generated in the electrolytic cell unit 450 to the tail cleaning spout 31b. The bidet cleaning flow path 23 guides the water supplied from the water supply source 10 via the water supply channel 20 and the functional water generated in the electrolytic cell unit 450 to the bidet cleaning spout 31a.

Further, a bypass flow path 24 and a spray flow path 25 are provided downstream of the flow path switching portion 472. The bypass flow path 24 guides the water supplied from the water supply source 10 through the water supply channel 20 and the functional water generated in the electrolytic cell unit 450 to the spout 32 of the nozzle cleaning chamber 478. The spray flow path 25 guides the water supplied from the water supply source 10 via the water supply channel 20 and the functional water generated in the electrolytic cell unit 450 to the spout 33 of the spray nozzle 479.

By controlling the flow path switching unit 472, the control unit 405 controls each of the flow paths of the buttocks cleaning flow path 21, the soft cleaning flow path 22, the bidet cleaning flow path 23, the bypass flow path 24, and the spray flow path 25. Switch between opening and closing.

Further, the sanitary cleaning device 100 has a human body detecting means 406. The human body detecting means 406 detects a human body in a toilet room provided with a sanitary cleaning device 100. The control unit 405 acquires the detection result of the human body detecting means 406. In the specification of the present application, the "detection of the human body in the toilet room" by the human body detecting means 406 includes not only the detection of the presence of the user in the toilet room but also the detection of the movement of the user in the toilet room. For example, in the range of "detection of the human body in the toilet room", the user enters and leaves the toilet room, the user approaches and leaves the toilet bowl 800, the toilet seat 200 is opened and closed, and the toilet lid 300 is opened and closed. Detection is also included.

As the human body detecting means 406, a room entry detection sensor 403, a seating detection sensor 404, and an open / close detection sensor 402 are provided.
As the room entry detection sensor 403, for example, a focal light sensor, a microwave sensor, an ultrasonic sensor, or a distance measuring sensor (infrared projection type sensor) can be used. In this example, the pyroelectric sensor provided in the casing 400 is used for the room entry detection sensor 403. The entry detection sensor 403 can immediately detect, for example, that the user has opened the door of the toilet room and entered the room. This makes it possible to detect whether or not the user has entered the toilet room.

The seating detection sensor 404 can detect whether or not the user is seated on the toilet seat 200. The seating detection sensor 404 detects the user's seating and leaving. As the seating detection sensor 404, a microwave sensor, a distance measuring sensor (infrared projection type sensor), an ultrasonic sensor, a tact switch, a capacitance switch (touch sensor), or a strain sensor can be used. In this example, the seating detection sensor 404 uses a distance measuring sensor provided in the casing 400.

When contact type sensors such as a tact switch, an electrostatic sensor and a strain sensor are used, these contact type sensors are provided on the toilet seat 200. When the user sits on the toilet seat 200, the tact switch is pressed by the weight of the user. Alternatively, the user comes into contact with the electrostatic sensor. Alternatively, pressure is applied to the strain sensor by the weight of the user. The seating of the user can be detected by the electric signals from these sensors.

The open / close detection sensor 402 is, for example, a micro switch, and detects the open / closed state of the toilet seat 200 or the toilet lid 300. In this example, the open / close detection sensor 402 detects the open / closed state of the toilet seat 200. For example, when the toilet seat 200 is opened from the toilet bowl 800 by a certain angle or more, the open / close detection sensor 402 detects the open state of the toilet seat 200.

The control unit 405 includes a control circuit such as a microcomputer. The control unit 405 is supplied with electric power from the power supply circuit 401, and based on signals from the human body detection means 406, the open tank 434, the flow rate sensor 442, the operation unit 500, and the like, the solenoid valve 431 and the cleaning pump are used. It controls the operation of the 436, the heat exchanger unit 440, the electrolytic cell unit 450, the flow path switching unit 472, the nozzle motor 476, and the like.

Further, the sanitary cleaning device 100 may be provided with a toilet bowl cleaning valve unit 510. The toilet bowl cleaning valve unit 510 has a role of controlling the supply of cleaning water flowing to the toilet bowl 800. The operation of the toilet bowl cleaning valve unit 510 is controlled by, for example, the control unit 405. The user can wash the toilet bowl by operating the operation unit 500 and sending a signal to the control unit 405.

The sanitary cleaning device 100 may be provided with a toilet lid opening / closing unit 511 and a toilet seat opening / closing unit 512. The toilet lid opening / closing unit 511 has a motor or the like and is connected to the toilet lid 300. The toilet seat opening / closing unit 512 has a motor or the like and is connected to the toilet seat 200. The operation of the toilet lid opening / closing unit 511 and the toilet seat opening / closing unit 512 is controlled by the control unit 405. The user can electrically open and close each of the toilet seat 200 and the toilet lid 300 by operating the operation unit 500 and sending a signal to the control unit 405.

Further, the casing 400 is appropriately provided with a "warm air drying function", a "deodorizing function", an "indoor heating function", etc., which blow warm air toward the "buttocks" of the user sitting on the toilet seat 200 to dry them. It may have been. At this time, an exhaust port from the deodorizing unit and an exhaust port from the room heating unit are appropriately provided on the side surface of the casing 400. However, these additional function units do not necessarily have to be provided.

The water supplied from the water supply source to the water supply channel 20 (for example, tap water) may contain sodium, calcium, potassium, magnesium and the like. Therefore, scales (for example, calcium carbonate) containing sodium, calcium, potassium, magnesium and the like as main components may precipitate in the water supply channel 20. When the scale is deposited, the water supply channel 20 may be clogged by the scale. Therefore, in the embodiment, the control unit 405 executes a scale removal mode in which the scale deposited in the water supply channel 20 is dissolved by the removing agent charged into the sub tank 706 (see FIG. 7) of the open tank 434. .. This makes it possible to eliminate and prevent clogging of the scale.

The remover is, for example, an acidic liquid that dissolves the scale deposited in the water supply channel 20. The remover includes, for example, phosphoric acid, lactic acid, hydrochloric acid or citric acid. As the removing agent, one containing sulfamic acid or acetic acid may be used. As shown in FIG. 3, for example, the open tank 434 is provided with a removing agent charging portion 434a (for example, an opening) capable of charging the removing agent into the sub tank 706. The place where the removing agent charging portion 434a is provided and the tank into which the removing agent is charged are not limited to the open tank 434 (sub tank 706). For example, in the case of a hot water storage type sanitary cleaning device, the removing agent charging unit 434a may be provided in the hot water storage tank, and the removing agent may be charged into the hot water storage tank.

FIG. 4 is a flowchart illustrating the scale removal mode of the sanitary cleaning device according to the embodiment.
In FIG. 4, the operation of the user and the operation of the sanitary cleaning device 100 (control unit 405) are shown together. The process represented by the alternate long and short dash line represents the operation of the user, and the process represented by the solid line represents the operation of the sanitary cleaning device 100.

As shown in FIG. 4, the scale removal modes include a filling operation (first to third filling operations a1 to a3), a standby operation (first to third standby operations b1 to b3), and a discharge operation c1. And have.

The filling operation (first to third filling operations a1 to a3) is an operation of filling the removing agent charged in the sub tank 706 on the downstream side of the sub tank 706 of the water supply channel 20. That is, in the filling operation, the control unit 405 controls the cleaning pump 436 and the like to remove the removing agent from the inside of the sub tank 706 to the water supply channel 20 on the downstream side and each water discharge port (water discharge port 31a, 31b, 32, 33). Supply. As a result, the water supply channel 20 is filled with the removing agent on the downstream side of the sub tank 706.

The standby operation (first to third standby operations b1 to b3) is an operation of waiting for a predetermined time after at least the first filling operation a1. During this predetermined time, the remover dissolves the scale. This predetermined time is arbitrary, but is determined based on, for example, the speed at which the removing agent dissolves the scale, and is about 10 minutes to 1 hour.

The discharge operation is an operation of discharging the removing agent from the water supply channel 20 after the first to third standby operations b1 to b3. That is, in the discharge operation, the control unit 405 controls the solenoid valve 431, the cleaning pump 436, the flow path switching unit 472, and the like to the water supply channel 20 and each water discharge port (water discharge port 31a, 31b, 32, 33). Supply water from the water supply source 10. As a result, the removing agent remaining in the water supply channel 20 is washed away.

As shown in FIG. 4, the user operates the operation unit 500 and inputs the removal operation start to the control unit 405 (step S101). As a result, the control unit 405 starts executing the scale removal mode.

The control unit 405 drains water from the sub tank 706 (step S102). After that, the control unit 405 notifies the user that the drainage is completed by using the notification means 501 (see FIG. 2). Any means such as a speaker, a display, and an LED can be used for the notification means 501. In this example, the notification means is a display and a speaker provided in the operation unit 500. The notification means 501 may be provided separately from the operation unit 500.

After that, the user charges the removing agent from the removing agent charging unit 434a (step S103). For example, the user puts in a liquid removing agent diluted with water or the like using a funnel or the like.

After that, the user operates the operation unit 500 and inputs the completion of the addition of the removing agent to the control unit 405 (step S104).

Then, the control unit 405 executes the first filling operation a1 (step S105). When the first filling operation a1 is completed, the control unit 405 notifies the user by using the notification means. After that, the user inputs the addition of the removing agent and the completion of the addition in the same manner as in steps S103 and S104 (steps S106 and S107).

When the charging of the removing agent is completed, the control unit 405 sequentially performs the first standby operation b1, the second filling operation a2, the second standby operation b2, the third filling operation a3, and the third standby operation b3. (Steps S108 to S112).

After that, the control unit 405 executes the discharge operation c1 (step S113), and ends the execution of the scale removal mode (step S114).
As a result, the scale deposited in the water supply channel 20 can be removed.

FIG. 5 is a flowchart illustrating the scale removal mode of the sanitary cleaning device according to the embodiment.
As shown in FIG. 5, the control unit 405 starts executing the scale removal mode in step S201. Step S201 is the same as step S101 described with respect to FIG.

After that, the control unit 405 starts the removal operation (step S202), and performs steps S102 and S105 described with respect to FIG. In addition, the user executes steps S103, S104, S106, and S107 described with respect to FIG.

After receiving the signal of the completion of charging of the removing agent in step S107, the control unit 405 starts the execution of steps S108 to S113 described with respect to FIG. When the human body detecting means 406 detects a human body in the toilet room after step S105 (for example, during execution of steps S108 to S113), the control unit 405 suspends (interrupts) the execution of the scale removal mode. ) (Step S204). In this example, the seating detection sensor 404 is used as the human body detecting means 406.

The control unit 405 continues the paused state of the scale removal mode while the human body detecting means 406 detects the human body in the toilet room (step S205: YES). When the human body detecting means 406 stops detecting the human body in the toilet room (step S205: NO), the control unit 405 restarts the scale removal mode.

The control unit 405 continues executing the scale removal mode while the human body detecting means 406 does not detect the human body in the toilet room (step S203: NO). Steps S203 to S205 are continued until steps S108 to S113 described with reference to FIG. 4 are completed (step S206: NO).

When the steps S108 to S113 described with respect to FIG. 4 are completed (step S206: YES), the control unit 405 ends the execution of the scale removal mode (step S207).

As described above, the control unit 405 suspends the execution of the scale removal mode while the human body detecting means 406 detects the human body during the execution of the scale removal mode. As a result, it is possible to prevent the removing agent from being discharged from the water discharge portion 470 (nozzle 473 or the like) when the user is in the toilet room, and it is possible to suppress the occurrence of a situation in which the removing agent accidentally hits the user.

The temporary stop of the scale removal mode means that the filling operation during execution or the discharging operation during execution is interrupted, and that the filling operation and the discharging operation are not started.
For example, while the human body detecting means 406 is detecting the human body, even if the scale removal mode is in the paused state, the standby operation (first to third standby operations b1 to b3) may be continued. good. In other words, the control unit 405 may continue to count the waiting time in the standby operation even while the human body detecting means 406 detects the human body. By continuing the standby operation in this way, it is possible to suppress a long time until the completion of the scale removal mode, and it is possible to improve usability.

Further, when restarting the filling operation, the interrupted second filling operation a2 or the third filling operation a3 may be executed from the beginning.

Further, as described above, in this example, the human body detecting means 406 is a sitting detection sensor 404. That is, the control unit 405 suspends the execution of the scale removal mode while the seating detection sensor 404 detects that the user is seated on the toilet seat 200. Then, when the seating detection sensor 404 does not detect the user's seating (detects the leaving), the control unit 405 resumes the execution of the scale removal mode.

In this way, when the execution of the scale removal mode is suspended based on the detection result of the seating detection sensor 404, the scale removal mode is continued until the user is seated. Therefore, for example, the user's entry is detected. The descaling mode is paused less frequently than when the descaling mode is paused. As a result, it is possible to suppress a long time until the completion of the scale removal mode.

Further, in the scale removing mode, since the water supply channel 20 is filled with the removing agent, the sanitary cleaning device 100 cannot clean the human body local part with water. Here, for example, when the user enters the room or the approach to the toilet bowl is detected and the scale removal mode is temporarily stopped, if the user enters the room immediately before the end of the scale removal mode, the scale removal mode is set in the time until sitting. The descaling mode will be paused even if is terminated. In this case, the user cannot clean the local area with the sanitary cleaning device, which may be inconvenient. On the other hand, when the execution of the scale removal mode is suspended based on the detection result of the seating detection sensor 404, the scale removal mode is continued until the user sits down, so that the user is in the scale removal mode. Even if the user enters the toilet room immediately before the end, there is a high possibility that the sanitary cleaning device 100 can clean the local area, and the usability can be improved.

Further, the human body detecting means 406 may be an open / close detection sensor 402. That is, for example, the control unit 405 suspends the execution of the scale removal mode while the open / close detection sensor 402 detects the state in which the toilet seat 200 is opened by the user. Then, when the toilet seat 200 is closed, the control unit 405 resumes the execution of the scale removal mode. In this way, when the execution of the scale removal mode is suspended based on the detection result of the open / close detection sensor 402, the scale removal mode is continued until the user opens the toilet seat 200, so that the user enters or approaches the room. Compared to the case where the scale removal mode is paused by detecting Can be made to.

Further, for example, when the human body detecting means 406 stops detecting the human body while the filling operation or the discharging operation is temporarily stopped (step S205: NO), the human body detecting means 406 detects the human body. After a predetermined time has elapsed from the time when it disappears, the filling operation or the discharging operation during the temporary stop is restarted. As a result, the filling operation or the discharging operation is restarted at a timing when the user is farther from the water discharge portion, as compared with the case where the filling operation or the discharging operation is restarted immediately after the human body detecting means 406 stops detecting the human body. .. As a result, it is possible to further suppress the application of the removing agent to the user. The predetermined time is arbitrary, but can be set to, for example, about 5 seconds.

Further, when the human body detecting means 406 detects a human body during the filling operation or the discharging operation, the control unit 405 retracts the nozzle 473. For example, the control unit 405 arranges the water discharge unit 470 (nozzle 473) at the scale removal position described later with respect to FIG. 6B during the filling operation or the discharge operation, and the water discharge unit during the temporary stop of the scale removal mode. The 470 is arranged in the storage position described later with respect to FIG. 6A. Since the nozzle 473 is separated from the user by retracting, it is possible to prevent the user from being exposed to the removing agent discharged from the nozzle 473. Further, by retracting the nozzle 473 and storing it in the casing 400, it is possible to prevent foreign matter from adhering to the nozzle 473 and the casing.

6 (a) and 6 (b) are sectional views illustrating a water discharge portion of the sanitary cleaning device according to the embodiment.
The cross sections shown in FIGS. 6 (a) and 6 (b) correspond to the A1-A1 line cross sections shown in FIG.
FIG. 6A illustrates a state in which the water discharge unit 470 (nozzle 473 and nozzle cleaning chamber 478) is in the storage position. The control unit 405 arranges the water discharge unit 470 at the storage position shown in FIG. 6A when the sanitary cleaning device 100 is not in use. The non-use time is, for example, when the local part of the human body is not washed or when the scale removal mode is not executed.

FIG. 6B illustrates a state in which the water discharge portion 470 (nozzle 473 and nozzle cleaning chamber 478) is in the scale removal position. The control unit 405 arranges the water discharge unit 470 at the scale removal position shown in FIG. 6B during at least a part of the scale removal mode being executed.

The casing 400 has an opening 407 for advancing the nozzle 473 to the outside of the casing 400. The opening 407 is provided in front of the casing 400, and the nozzle 473 can advance forward from the opening 407 when cleaning the human body local part. A shutter 408 (nozzle damper) is rotatably provided in the opening 407. The shutter 408 opens and closes the opening 407 according to the advance and retreat of the nozzle 473.

As shown in FIG. 6A, when the water discharge portion 470 is arranged in the storage position, the nozzle 473 and the nozzle cleaning chamber 478 are retracted into the casing 400 and are retracted from the opening 407 and the shutter 408. Is also located behind. At this time, the shutter 408 is closed so as to close the opening 407. Further, the nozzle cleaning chamber 478 is located at the tip of the nozzle 473.

As shown in FIG. 6B, when the water discharge portion 470 is arranged at the scale removal position, the nozzle 473 advances forward from the casing 400. At this time, the nozzle cleaning chamber 478 rotates by receiving a force from the nozzle 473 and protrudes forward from the casing 400. Further, the shutter 408 is in an open state by being rotated by receiving a force from the nozzle 473.

In at least a part of the state where the water discharge unit 470 is in the scale removal position, the remover is discharged from the water discharge unit 470 toward the outside of the casing 400. For example, as shown by the arrow AB shown in FIG. 6B, the spout 32 of the nozzle cleaning chamber 478 discharges water or a removing agent toward the outside of the casing 400 at the scale removing position. For example, the remover is discharged downward and backward into the bowl 801 of the toilet bowl 800. On the other hand, in the storage position shown in FIG. 6A, the water discharge port 32 of the nozzle cleaning chamber 478 discharges water toward the inside of the casing 400 as shown by the arrow AA.

If the removing agent excessively adheres to the metal member (motor or the like) or the resin member arranged inside the casing 400, these members may easily deteriorate. On the other hand, according to the embodiment, by arranging the water discharge unit at the scale removal position while the control unit 405 is executing the scale removal mode, it is possible to prevent the removing agent from being applied to the members in the casing. As a result, deterioration of the member can be suppressed.

In the embodiment, the control unit 405 performs the filling operation (first to third filling operations a1 to a3), the standby operation (first to third standby operations b1 to b3), and at least a part of the discharging operation c1. , The water discharge portion 470 is set as the scale removal position.

For example, the removing agent is most likely to be caught on the member in the casing 400 during the discharging operation when the removing agent is discharged from the water supply channel 20 and the scale removal mode is terminated. Therefore, the control unit 405 arranges the water discharge unit 470 at the scale removal position during the discharge operation. As a result, it is possible to prevent the removing agent from being applied to the members in the casing 400 during the discharging operation.

Further, during the filling operation, the removing agent may be unintentionally discharged from the spout. Therefore, the control unit 405 arranges the water discharge unit 470 at the scale removal position during the filling operation (at least one of the first to third filling operations a1 to a3). As a result, it is possible to prevent the removing agent from being applied to the members in the casing 400 during the filling operation.

On the other hand, during the standby operation, the removing agent is less likely to be discharged from the water discharge unit 470 than during the filling operation and the discharging operation. For example, during the standby operation (at least one of the first to third standby operations b1 to b3), the control unit 405 arranges the water discharge unit 470 at the storage position and stores the nozzle 473 in the casing 400. .. As a result, the head (water head) of the nozzle 473 can be made smaller during the standby operation as compared with the state where the nozzle 473 is advanced from the casing 400. Therefore, it is possible to suppress the leakage of the removing agent during the standby operation, and it is easy to keep the filling, so that the scale can be removed efficiently.

During the standby operation, the nozzle 473 may be further retracted from the storage position. Further, during the standby operation, the direction in which the nozzle 473 extends may be brought closer to horizontal by the rotation of the nozzle 473 or the like. This can further prevent the remover from leaking.

Further, as shown in FIG. 6B, when the water discharge portion 470 is arranged at the scale removal position, the tip 473f of the nozzle 473 is located outside the casing 400. By advancing the nozzle 473 from the casing 400 in this way, it is possible to further suppress the removal agent from being applied to the members in the casing 400.

Further, as shown in FIG. 6B, when the water discharge portion 470 is arranged at the scale removal position, at least one of the water discharge port 31 of the nozzle 473 (for example, the bidet washing water discharge port 31a and the buttocks washing water discharge port 31b). ) Does not protrude forward from the shutter 408. In other words, the spout 31 is located behind the front end 408f of the shutter 408. As a result, it is possible to prevent the removing agent from being ejected toward the front of the shutter. Therefore, even if the filling operation or the discharging operation is executed while the user is in the toilet room, it is possible to suppress the removal agent from being applied to the user.

Further, when the tip 473f of the nozzle 473 is located outside the casing 400, the user can easily recognize that, for example, a filling operation or a discharging operation is being performed by looking at the nozzle 473. As a result, it is possible to prevent the user from inadvertently approaching the sanitary cleaning device, and it is possible to further prevent the user from being exposed to the removing agent.

FIG. 7 is a schematic diagram illustrating an open tank of the sanitary cleaning device according to the embodiment.
As shown in FIG. 7, the open tank 434 (backflow prevention mechanism) has a sub tank 706 provided in the water supply channel 20. The water that has passed through the solenoid valve 431 flows into the sub tank 706 of the open tank 434 from the inflow port 701 via the inlet pipe 710.

Further, the open tank 434 has an discharge port 703 (overflow port) and an outlet 702. The discharge port 703 discharges excess water exceeding the full water level H2 of the sub tank 706 to the outside of the sub tank 706. That is, the water flowing into the sub tank 706 is stored in the sub tank 706, but when the water level exceeds the full water level H2, the surplus water is indicated by an arrow OF from the discharge port 703 provided on the front surface of the open tank 434. Leaks to the outside (overflow).

An air gap A1 is formed between the inflow port 701 and the discharge port 703, and even if the water level in the open tank 434 rises, the stored water does not reach the inflow port 701. This prevents backflow of sewage from the open tank 434 to the upstream. In addition, there is a distance of height A2 from the discharge port 703 to the rim surface of the toilet bowl 800, which also functions as an air gap, and sewage splashes inside the bowl and enters the open tank 434 from the discharge port 703. It suppresses the occurrence of such a situation.

The outflow port 702 causes the water (and the removing agent) in the sub tank 706 to flow out to the downstream side of the sub tank 706 of the water supply channel 20. Specifically, a cleaning pump 436 is connected downstream of the outlet pipe 712 connected to the outlet 702, and the cleaning pump 436 pumps water in the sub tank 706 from the outlet 702 and downstream. Supply. Further, the cleaning pump 436 can also adjust the flow rate (water force).

With the above configuration, the water stored in the sub tank 706 of the open tank 434 is pumped out by the cleaning pump 436, and the flow rate pumped out is adjusted by the cleaning pump 436. When the flow rate of water flowing out from the inflow port 701 into the sub tank 706 is pumped out by the cleaning pump 436 and the flow rate of the water flowing out from the outflow port 702 is relatively small, it is stored in the sub tank 706. The water level of the existing water rises and exceeds the full water level H2, and flows out as surplus water from the discharge port 703 as shown by the arrow OF. This excess water is discharged into the bowl 801 of the toilet bowl 800, and is discharged together with the water in the bowl 801 when the toilet bowl 800 is drained.

Further, the sub tank 706 is provided with a water level sensor 707 that detects the water level in the sub tank 706. The water level sensor 707 is, for example, a float switch. As the water level sensor 707, any sensor capable of detecting the water level in the sub tank 706 can be used.

The water level sensor 707 can detect that the water level in the sub tank 706 is the drought water level H1. The drought water level H1 means a water level that is substantially the same as the height of the outlet 702. Here, "substantially the same" means that, for example, the difference between the drought water level H1 and the water level H0 (height of the upper end of the outlet 702) is 25 mm or less, preferably 21 mm or less. The drought water level H1 is preferably the same as or slightly higher than the water level H0. For example, the difference between the drought water level H1 and the water level H0 is 10 mm or more and 25 mm or less.

The outlet 702 is provided at the bottom (or near the bottom) of the sub tank 706. For example, the difference between the water level H0 (the height of the upper end of the outlet 702) and the height of the bottom of the sub tank 706 is 5 mm or less, preferably 2 mm or less. When the water level in the sub tank is the drought water level H1, the sub tank 706 is almost empty.

For example, in step S102 described with respect to FIG. 4, the control unit 405 controls the cleaning pump 436 and the like to lower the water level in the sub tank to the drought water level H1.

Further, for example, the sub tank 706 is provided with a sensor (for example, a water level sensor 707) capable of detecting the upper limit water level H3 indicating the upper limit of the input amount of the removing agent. In step S104 described with respect to FIG. 4, when the user inputs the removing agent and the water level reaches the upper limit water level H3, the control unit 405 notifies by using the notification means. As a result, it is possible to prevent the removing agent from overflowing from the sub tank 706.

Further, in step S105 described with respect to FIG. 4, the control unit 405 continues the filling operation (first filling operation a1) until the water level sensor 707 detects that the water level in the sub tank 706 is the drought water level H1. do. That is, the control unit 405 continues to supply the removing agent in the sub tank 706 to the downstream thereof until the water level in the sub tank 706 reaches the drought water level H1. As a result, most of the added remover (for example, almost all) can be filled to the downstream side, so that the remover can be used efficiently and the scale can be removed efficiently.

On the other hand, when the water level in the sub tank 706 drops to the height of the outlet 702 of the sub tank 706 (water level H0), if the cleaning pump 436 continues to operate, air flows from the outlet 702 to the water supply channel 20. It will be mixed and the efficiency of scale removal will be reduced. On the other hand, according to the embodiment, when the water level in the sub tank 706 becomes the drought water level H1, the filling operation is stopped, so that it is possible to prevent air from being mixed into the water supply channel 20 from the outlet 702 thereafter. This makes it possible to suppress a decrease in the efficiency of scale removal.

Similarly, in step S111, the control unit 405 continues the filling operation (third filling operation a3) until the water level sensor 707 detects that the water level in the sub tank 706 is the drought water level H1.

8 (a) and 8 (b) are schematic views illustrating a flow path switching portion of the sanitary cleaning device according to the embodiment.
As shown in FIG. 8A, the water supply channel 20 includes a first flow path 41, a plurality of second flow paths 42 (buttock cleaning flow path 21, soft cleaning flow path 22, bidet cleaning flow path 23, bypass). It has a flow path 24 and a flow path for spraying 25). The first flow path 41 is a portion of the water supply channel 20 provided on the upstream side of the flow path switching portion 472. Each of the plurality of second flow paths 42 is a portion of the water supply channel 20 provided on the downstream side of the flow path switching portion 472.

Each of the plurality of second channels is connected to a plurality of spouts of the spout portion 470.
That is, as described with respect to FIG. 2, the buttocks cleaning flow path 21 and the soft cleaning flow path 22 are connected to the buttocks cleaning spout 31b, and the bidet cleaning flow path 23 is connected to the bidet cleaning spout 31a. The bypass flow path 24 is connected to the water discharge port 32, and the spray flow path 25 is connected to the water discharge port 33.

The flow path switching unit 472 includes a fixed disk (stator) 80, a movable disk (rotor) 82, a housing 84, and a drive mechanism 86.

The fixed disk 80 is, for example, disk-shaped and has a front surface 80a (a surface facing the upstream side) and a back surface 80b (a surface facing the downstream side) opposite the front surface 80a.

FIG. 8B is a plan view illustrating a fixed disk. The fixed disk 80 has a plurality of ports (openings). For example, the fixed disk 80 is provided with a mist port P1, a bidet port P2, a first bypass port P3, a self-cleaning port P4, a soft cleaning port P5, a second bypass port P6, and a tail cleaning port P7. ..

The mist port P1 is connected to the spray flow path 25. The bidet port P2 is connected to the bidet cleaning flow path 23. The first bypass port P3 is connected to the bypass flow path 24. The self-cleaning port P4 is connected to the buttocks cleaning flow path 21, the soft cleaning flow path 22, and the bidet cleaning flow path 23. The soft cleaning port P5 is connected to the soft cleaning flow path 22. The second bypass port P6 is connected to the bypass flow path 24. The buttocks cleaning port P7 is connected to the buttocks cleaning port P7.

The movable disc 82 has, for example, a disk shape having a diameter similar to that of the fixed disc 80. The movable disc 82 is provided on the upstream side of the fixed disc 80. The movable disc 82 abuts on the front surface 80a of the fixed disc 80. The movable disk 82 slides and rotates on the front surface 80a with the direction orthogonal to the front surface 80a as an axis (hereinafter, referred to as a rotation axis RA). The movable disc 82 has an opening corresponding to one port of the fixed disc 80. For example, when the opening of the movable disk 82 overlaps one port of the fixed disk 80, another port of the fixed disk 80 is blocked by the movable disk 82. This allows water to pass through only one port that overlaps the opening of the movable disk 82.

The flow path switching unit 472 selectively switches the port through which water can pass by rotating the movable disk 82. Thereby, depending on the port to be selected, water or a removing agent may be added to at least one of the buttocks cleaning flow path 21, the soft cleaning flow path 22, the bidet cleaning flow path 23, the bypass flow path 24, and the spray flow path 25. Can be selectively supplied.

The housing 84 has, for example, a cylindrical shape and accommodates a fixed disc 80 and a movable disc 82 in an internal space. The housing 84 rotatably supports the movable disc 82. The internal space on the upstream side of the movable disk 82 of the housing 84 is connected to the electromagnetic pump 54 via a pipe or the like. The water or the removing agent supplied via the electromagnetic pump 54 is supplied from the internal space of the housing 84 to each flow path via the movable disk 82 and the fixed disk 80.

The drive mechanism 86 has an electric motor such as a motor or a solenoid, and rotates the movable disk 82 by supplying a driving force to the movable disk 82. The drive mechanism 86 is connected to the control unit 405 and rotates the movable disk 82 based on the control of the control unit 405. The control unit 405 drives the drive mechanism 86 to rotate the movable disk 82, and selects one of the ports of the fixed disk 80 to switch the destination of the water or the removing agent. The drive mechanism 86 may be any mechanism capable of rotating the movable disk 82 without causing water leakage.

As described above, the flow path switching unit 472 selectively connects the first flow path 41 and at least one of the plurality of second flow paths 42.

9 (a) and 9 (b) are timing charts illustrating the operation of the flow path switching unit of the sanitary cleaning device according to the embodiment.
9 (a) shows the port selected by the flow path switching unit 472 in the first filling operation a1 (or the third filling operation a3), and FIG. 9 (b) shows the second filling operation a2. Represents a port selected by the flow path switching unit 472. The vertical axis represents the selected port and the horizontal axis represents time.

As shown in FIG. 9A, when the control unit 405 starts the first filling operation a1 (or the third filling operation a3), the control unit 405 controls the flow path switching unit 472 to control the mist port P1 and the bypass port. P2, the first bypass port P3, the self-cleaning port P4, the soft cleaning port P5, the second bypass port P6, and the buttocks cleaning port P7 are selected in this order (first control CN1). After that, the control unit 405 controls the flow path switching unit 472, and the buttocks cleaning port P7, the second bypass port P6, the soft cleaning port P5, the self-cleaning port P4, the first bypass port P3, the bidet port P2, and the mist. Port P1 is selected in this order (second control CN2).

The control unit 405 alternately repeats the first control CN1 and the second control CN2. In the first control CN1 and the second control CN2, the port switching is, for example, time control. That is, the length of time that each port is selected is predetermined for each port. When the drought water level H1 is detected in the middle of the first control CN1 or the second control CN2, the control unit 405 ends the first filling operation a1 (or the third filling operation a3). The order in which the ports are selected is not limited to the illustrated example. For example, either one of the first control CN1 and the second control CN2 may be repeated.

The ports selected in this way are sequentially switched, and the first control CN1 and the second control CN2 are repeated. As a result, the flow path switching unit 472 sequentially switches the second flow path 42 connected to the first flow path 41, and connects the first flow path 41 to at least one of the plurality of second flow paths 42 a plurality of times.

In the plurality of second flow paths 42, the degree of clogging of the scale differs depending on the flow path. In this case, if one second flow path 42 is filled with the removing agent and then the next second flow path 42 is filled with the removing agent, the filling operation time is set longer or the flow rate of the removing agent is increased. It may be necessary to set it. In this case, if the capacity of the sub tank 706 is small, the water level in the sub tank 706 may become the drought water level H1 before all the second flow paths 42 are filled with the removing agent. On the other hand, according to the embodiment, the flow path switching unit 472 sequentially switches the second flow path 42 connected to the first flow path 41, and a plurality of the first flow path 41 and the second flow path 42 are used. By connecting once, the removing agent can be divided into small portions and evenly supplied to each of the plurality of second flow paths 42.

In the second filling operation a2, for example, the first control CN1 is executed only once, as shown in FIG. 9B. That is, the flow path switching unit 472 sequentially switches the ports to be selected in the second filling operation a2, and selects each port once.

Further, in the standby operation (first to third standby operations b1 to b3), the control unit 405 is a second flow path other than the cleaning flow path used for cleaning the human body local part among the plurality of second flow paths 42. The flow path switching unit 472 is controlled so as to connect the 42 and the first flow path 41.

The cleaning flow path used for cleaning the human body is, for example, the buttocks cleaning flow path 21, the soft cleaning flow path 22, or the bidet cleaning flow path 23. These cleaning channels supply water to a cleaning spout (a bidet cleaning spout 31a or a buttocks cleaning spout 31b) that discharges water toward a local part of the human body. The second flow path 42 other than the cleaning flow path is, for example, a bypass flow path 24 and a spray flow path 25.

In this example, the control unit 405 controls the flow path switching unit 472 so as to select the first bypass port P3 during the standby operation. As a result, the flow path switching unit 472 connects the bypass flow path 24 and the first flow path 41 during the standby operation.

During the standby operation, for example, the removing agent in the second flow path 42 that is not connected to the first flow path 41 due to the negative pressure in the water supply channel 20 is in the second flow path 42 connected to the first flow path 41. It is harder to leak to the outside than the remover of. According to the embodiment, by connecting the second flow path 42 other than the cleaning flow path and the first flow path 41 during the standby operation, it is possible to suppress the outflow of the removing agent from the cleaning flow path. This makes it possible to more reliably remove the scale that interferes with the function of cleaning the human body locally of the sanitary cleaning device 100.

Further, in the standby operation (first to third standby operations b1 to b3), the control unit 405 has the second lowest speed at which the removing agent flows out from the water supply channel 20 among the plurality of second flow paths 42. The flow path switching unit 472 is controlled so as to connect the flow path 42 and the first flow path 41. At this time, the removing agent flows out from the spout that communicates with the connected second flow path 42.

The rate at which the removing agent flows out from the water supply channel 20 (milliliter / sec) depends on the pressure loss in the second flow path 42 connected to the first flow path 41 and the head (head). As described above, in this example, the bypass flow path 24 and the first flow path 41 are connected during the standby operation. In the standby operation, the speed at which the removing agent flows out when the bypass flow path 24 and the first flow path 41 are connected is such that the second flow path 42 other than the bypass flow path 24 and the first flow path 41 are connected. It is lower than the rate at which the remover flows out when it is done. As a result, the removing agent is less likely to leak from the water supply channel 20 during the standby operation, so that the removing agent can function more effectively.

The flow rate sensor 442 described with respect to FIG. 2 can detect the flow rate of water flowing through at least one of the plurality of second flow paths 42. That is, the flow rate sensor 442 can detect the flow rate of the second flow path 42 connected to the first flow path 41 by the flow path switching unit 472.

When scale is deposited in the second flow path 42, the flow rate in the second flow path 42 decreases. Therefore, when the flow rate detected by the flow rate sensor 442 drops to a predetermined value or less, the control unit 405 operates the notification means 501. As a result, the notification means 501 notifies the user of the timing of adding the removing agent.

The predetermined value of the flow rate for notifying the closing timing is arbitrary, but is set based on, for example, the flow rate before at least one of the second flow paths 42 is clogged with the scale. Further, any means such as a speaker, a display, and an LED can be used as the notification means for notifying the closing timing.

Since the scale removal mode is performed after the user puts the removing agent into the sub tank 706, the timing at which the scale removal mode is executed depends on the user. Since the easiness of scale precipitation differs depending on the region, the timing at which the user should add the remover varies depending on the environment. If the user decides the timing to execute the scale removal mode only by feeling, the scale cannot be removed at an appropriate timing, and the removing agent may not function effectively. On the other hand, according to the embodiment, it is possible to notify the user of the timing of adding the removing agent at an appropriate timing before at least one of the plurality of second flow paths 42 is clogged with the scale, which is effective. Can function as a remover.

Further, for example, the flow rate used by the control unit 405 to determine the notification of the closing timing is the second flow having at least one of the smallest cross-sectional area and the smallest conductance among the plurality of second flow paths 42. The flow rate of the road 42. That is, the charging timing is notified based on the flow rate of the second flow path 42 in which the scale is easily clogged. For example, the control unit 405 causes the notification means 501 to notify the charging timing based on the flow rate in the spray flow path 25 detected by the flow rate sensor 442. As a result, it is possible to notify the user of the timing of adding the removing agent at a more appropriate timing before the scale is clogged.
The cross-sectional area of the second flow path 42 is, for example, a cross-sectional area in a plane perpendicular to the direction in which water flows. If the cross-sectional area changes along the direction of water flow, use the minimum value.

Further, the scale containing sodium, calcium, potassium, magnesium and the like as main components may adhere to the cathode side of the electrolytic cell unit 450 for electrolysis. Therefore, when the integrated operation time of the electrolytic cell unit 450 exceeds a predetermined time, the control unit 405 may operate the notification means 501 to notify the user of the timing of charging the removing agent. The operation integrated time is an integrated value of the time when a voltage is applied between the electrodes for electrolysis. Further, the predetermined time for notifying the closing timing is arbitrary, but is set to, for example, a time shorter than the integrated operation time until at least one of the second flow paths 42 is clogged with the scale.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. The above-mentioned embodiments which have been appropriately designed by those skilled in the art are also included in the scope of the present invention as long as they have the features of the present invention. For example, the shape, size, material, arrangement, installation form, and the like of each element included in the sanitary cleaning device are not limited to those exemplified, and can be appropriately changed.
Further, the elements included in each of the above-described embodiments can be combined as long as technically possible, and the combination thereof is also included in the scope of the present invention as long as the features of the present invention are included.

10 water supply source, 20 water supply channel, 21 tail cleaning channel, 22 soft cleaning channel, 23 bidet cleaning channel, 24 bypass channel, 25 spray channel, 31 spout, 31a bidet cleaning spout, 31b cleaning spout Water spout, 32 spout, 33 spout, 41 1st flow path, 42 2nd flow path, 54 electromagnetic pump, 80 fixed disk, 80a front, 80b back, 82 movable disk, 84 housing, 86 drive mechanism, 100 sanitary cleaning Equipment, 200 toilet seat, 300 toilet lid, 400 casing, 401 power supply circuit, 402 open / close detection sensor, 403 entry detection sensor, 404 seating detection sensor, 405 control unit, 406 human body detection means, 407 opening, 408 shutter, 408f front end, 431 Electromagnetic valve, 432 pressure control valve, 433 check valve, 434 open tank, 434a remover inlet, 436 cleaning pump, 440 heat exchanger unit, 442 flow sensor, 450 electrolytic tank unit, 452 vacuum breaker, 470 water discharge Part, 472 Flow path switching part, 473 nozzle, 473f tip, 476 nozzle motor, 478 nozzle cleaning chamber, 479 spray nozzle, 500 operation unit, 501 notification means, 510 toilet cleaning valve unit, 511 toilet lid opening / closing unit, 512 toilet seat opening / closing Unit, 701 inlet, 702 outlet, 703 outlet, 706 sub-tank, 707 water level sensor, 710 inlet pipe, 712 outlet pipe, 800 toilet bowl, 801 bowl, CN1 1st control, CN2 2nd control, H0 water level, H1 drought Water level, H2 full water level, H3 upper limit water level, P1 mist port, P2 bidet port, P3 first bypass port, P4 self-cleaning port, P5 cleaning port, P6 second bypass port, P7 cleaning port, RA rotation axis, a1 a3 1st to 3rd filling operation, b1 to b3 1st to 3rd standby operation, c1 discharge operation

Claims (6)

It is a sanitary cleaning device installed in the toilet room.
A nozzle that discharges water and
A water supply channel that supplies the water to the nozzle,
The tank provided in the water supply channel and
A removing agent charging section capable of charging a removing agent that dissolves the scale deposited in the water supply channel into the tank, and a removing agent charging section.
A filling operation of filling the removing agent charged into the tank on the downstream side of the tank of the water supply channel, a standby operation of waiting for a predetermined time after the filling operation, and a standby operation of waiting for the removing agent after the waiting operation. A control unit that executes a scale removal mode, which has a discharge operation for discharging from a water supply channel, and
The human body detecting means for detecting the human body in the toilet room and
A casing for accommodating the nozzle and having an opening for advancing the nozzle to the outside of the casing.
A shutter that opens and closes the opening of the casing according to the advance and retreat of the nozzle, and
Equipped with
When the human body detecting means detects the human body during the execution of the scale removal mode, the control unit suspends the execution of the scale removal mode .
The control unit is characterized in that the nozzle is arranged so that the tip of the nozzle is located outside the casing and the spout of the nozzle does not protrude from the shutter during the discharge operation or the filling operation. Sanitary cleaning equipment. With more toilet seats
The hygienic cleaning device according to claim 1, wherein the human body detecting means is a seating detecting means for detecting the sitting of the user on the toilet seat. With more toilet seats
The sanitary cleaning device according to claim 1, wherein the human body detecting means is a toilet seat opening / closing detecting means for detecting the opening / closing of the toilet seat by a user. When the human body detecting means stops detecting the human body while the filling operation or the discharging operation is temporarily stopped, the control unit performs the filling operation or the discharging operation during the suspension after a predetermined time has elapsed. The sanitary cleaning device according to any one of claims 1 to 3, wherein the sanitary cleaning device is restarted. The sanitary cleaning device according to any one of claims 1 to 4 , wherein the control unit continues the standby operation while the human body detecting means detects the human body. The hygienic cleaning according to any one of claims 1 to 5 , wherein the control unit retracts the nozzle when the human body detecting means detects the human body during the filling operation or the discharging operation. Device.

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