JP5084315B2 - Sanitary washing device and toilet device - Google Patents

Description

  The present invention relates to a sanitary washing device and a toilet device, and more specifically, to a sanitary washing device for washing, for example, a “buttock” of a user sitting on a Western-style sitting toilet with water and a toilet device equipped with the same.

The sanitary washing apparatus accommodates a water discharge nozzle for jetting washing water so that it can freely move forward and backward, and can be installed on a sitting toilet to wash a “buttock” of a user sitting on a toilet seat with warm water. In such a sanitary washing apparatus, a technique is disclosed in which when the human body is detected, the accumulated water in the tank is forcibly drained to prevent the accumulated water contaminated with microorganisms from being injected into the human body. (Patent Document 1).
JP 2001-279775 A

By the way, sanitary washing apparatuses have been rapidly spread in recent years, and are being installed not only in ordinary homes and office buildings but also in aircraft. In the case of an aircraft, sterilization may be performed by passing water containing chlorine or the like through a water storage tank and a water supply pipe provided in the aircraft. It is desirable that the water storage tank, water discharge nozzle, etc. of the sanitary washing device can be sterilized in accordance with this sterilization treatment. However, it has been found that when sterilizing water is supplied to a conventional sanitary washing apparatus, the heater for generating hot water is automatically energized, and the heated heater is corroded by the sterilizing water.
The present invention has been made from such a point of view, and provides a sanitary washing device capable of executing sterilization of a water storage tank, a water discharge nozzle, etc. in accordance with sterilization processing performed in an aircraft, and a toilet device equipped with the same. It is.

According to one aspect of the present invention, a water discharge nozzle for injecting water, a water storage tank with a built-in heater, a water level detection unit for detecting the water level of water stored in the water storage tank, and a water supply source to the water storage tank A water supply pipe for supplying water, an electromagnetic on-off valve for opening and closing a flow path of water flowing through the water supply pipe, a supply pipe for supplying water from the water storage tank to the water discharge nozzle, opening and closing of the electromagnetic on-off valve, A control unit that controls power supplied to the heater, and the control unit opens the electromagnetic on-off valve to supply normal water from the water supply source to the water storage tank and is stored in the water storage tank. When the water level detecting unit detects that the normal water has reached a predetermined water level, the electromagnetic on-off valve is closed and power is supplied to the heater until the temperature of the normal water in the water storage tank reaches a target value. First water supply Detection and over-de, the supply sterilizing water to the water storage tank solenoid valve from the water supply source is opened condition, it said that the sterilizing water stored in the water storage tank reaches a predetermined water level by the water level detection unit Then, the electromagnetic on-off valve is closed, and the second water supply mode in which power is not supplied to the heater can be executed even if the temperature of the sterilizing water in the water storage tank does not reach the target value. A sanitary washing device is provided.

  According to another aspect of the present invention, the control unit includes a toilet bowl having a bowl, an on-off valve provided between the bowl and the drain pipe, and the sanitary washing device. In the second water supply mode, there is provided a toilet device characterized in that the water staying in the bowl is drained to the drain pipe by outputting a control signal for opening the on-off valve.

  ADVANTAGE OF THE INVENTION According to this invention, the sanitary washing apparatus which could perform sterilization of a water storage tank, a water discharge nozzle, etc. according to the sterilization process implemented in an aircraft, and a toilet apparatus provided with the same can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view of a toilet apparatus according to an embodiment of the present invention.
This toilet device includes a Western-style seat toilet 950 and a sanitary washing device 10 installed thereon. The Western-style toilet 950 is a “vacuum” toilet that is installed in an aircraft lavatory, for example, and has a structure in which an on-off valve attached to the bottom of the bowl is opened in order to drain the toilet. However, the present invention is not limited to this, and the toilet 950 may be a so-called “low tank type”, or may be a “direct pressure type” that is directly connected to a water supply source such as a water supply and allows flush water to flow.

  The sanitary washing device 10 installed on the toilet 950 includes a main body 12, and a toilet seat 14 and a toilet lid 16 that are pivotally supported by the main body 12 so as to be openable and closable. However, the toilet lid 16 may not be provided. From the main body 12, the water discharge nozzle 410 extends into the bowl of the toilet 950 in response to the user's switch operation, etc., and water is sprayed from the water discharge port provided near the tip of the toilet 950, so that the user's “wet” It can be washed. In the present specification, the term “water” refers to not only cold water, but also heated water and tap water containing trace amounts of sterilizing components (hereinafter referred to as normal water), as will be described later. In addition, sterilized water having a large amount of sterilizing components is also included.

FIG. 2 is a block diagram of the sanitary washing device 10 of the present embodiment.
FIG. 3 is a schematic diagram showing a water channel system of the sanitary washing device 10. 2 and the subsequent drawings, the same elements as those described above with reference to the previous drawings are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in FIG. 3, the sanitary washing device 10 includes a water supply pipe 110 connected to a water supply source 20 such as a water supply tank and reaching the water storage tank 200, and a supply pipe 111 extending from the water storage tank 200 to the nozzle unit 400. . A stop cock 112 is first provided on the upstream side of the water supply pipe 110. The stop cock 112 can be manually opened and closed, and can shut off the water channel at any time, for example, when attaching and removing the sanitary washing device 10 or during maintenance and inspection. The stop cock 112 may be provided in the sanitary washing device 10 or may be provided on the supply port side of the water supply source 20 as a separate element from the sanitary washing device 10.

  A strainer 114, an electromagnetic on-off valve 120, and a pressure regulating valve 130 are provided downstream of the stop cock 112. The strainer 114 is a filter of about 80 mesh, for example, and removes foreign matters mixed in the water supply. The electromagnetic on-off valve 120 is, for example, an electromagnetic valve that is normally closed, that is, in a closed state when not energized, and controls the supply of water based on a command from the control unit 500 (see FIG. 2). The pressure regulating valve 130 has a role of adjusting to a predetermined pressure range when the feed water pressure is high.

  A safety valve 140 is provided downstream of the pressure regulating valve 130. The safety valve 140 opens when the water channel pressure rises and drains water into the bowl of the toilet 950. By providing the safety valve 140, it is possible to prevent water leakage from occurring inside the sanitary washing device 10 even when the pressure in the secondary water channel increases due to, for example, a failure of the pressure regulating valve 130.

A water storage tank 200 is provided downstream of the safety valve 140. The water storage tank 200 includes a heater and a temperature sensor (not shown). The controller 500 controls the electric power supplied to the heater based on the output from the temperature sensor provided in the water storage tank 200, and makes the water supplied to the water storage tank 200 hot water having a predetermined temperature. The capacity of the water storage tank 200 can be about 700 milliliters, for example.
The water level stored in the water storage tank 200 can be detected by the water level detection unit 250. The water level detection unit 250 does not need to be attached to the water storage tank 200, and may be provided in the supply pipe 111, the flow rate adjustment valve unit 300, or the nozzle unit 400 on the downstream side thereof.

  A nozzle unit 400 is connected downstream of the water storage tank 200 from a vacuum breaker 210, a check valve 220, and a vacuum breaker 230 via a flow rate adjustment valve unit 300. The check valve 220 prevents the backflow of water from the nozzle unit 400 to the water channel when the pressure in the water channel decreases. The vacuum breakers 210 and 230 provided before and after that promote the drainage of the water passages on the primary side and the secondary side of the check valve 220. The flow rate adjusting valve unit 300 switches the water supply to the water discharge nozzle 410 and the nozzle cleaning chamber 490 (see FIG. 2) provided in the nozzle unit 400 and adjusts the water flow. A pulsation unit that pulsates water may be provided on the secondary side of the flow rate adjustment valve unit 300.

  As shown in FIG. 2, the nozzle unit 400 includes a water discharge nozzle 410, a nozzle motor 480 that extends and retracts the water discharge nozzle 410, and a nozzle cleaning chamber that sprays water on the outer periphery of the water discharge nozzle 410 to clean its body. 490. The operations of these elements are controlled by the control unit 500.

  In addition, a signal from a seating sensor 600 that detects that a user is sitting on the toilet seat 14, information on a switch operation by a remote controller, and the like are input to the control unit 500.

  Furthermore, a notification unit 800 may be provided. The notification unit 800 is controlled by the control unit 500, and has a role of notifying the user of the operating state of the sanitary washing device 10, messages to the user, questions, and the like by light or sound.

FIG. 4 is a flowchart showing the operation executed in the sanitary washing device of this embodiment.
Hereinafter, for example, the case where the sanitary washing device 10 is mounted on an aircraft and the preparation for starting is started after the aircraft is parked and stored in the hangar will be described as an example. Normally, when the aircraft is stored in the hangar, the water in the water supply tank provided in the aircraft is drained to an empty state, and the water in the water storage tank 200 of the sanitary washing device 10 is also drained in an empty state. It is said that. When starting such an aircraft, a maintenance / inspection operator first turns on the main power of the aircraft, and then turns on the power of the sanitary washing apparatus 10.

  When the sanitary washing device 10 is powered on (step S100), an initial process is first executed (step S200). Here, when the sanitary washing apparatus 10 is provided with a power switch, the power is turned on when the power switch is turned on or when the power plug 30 (see FIG. 2) is inserted into the outlet. It can be. In the case where the sanitary washing apparatus 10 is not provided with a power switch, it can be assumed that the power is turned on when the power plug 30 is inserted into the outlet.

  The initial process (step S200) includes, for example, an operation for confirming and setting the operation reference point of the movable part. Specifically, for example, the water discharge nozzle 410 is driven by the nozzle motor 480 and moved to the operation reference point, and the water discharge nozzle 410 is accommodated in the main body 12. Further, the rotor of the flow rate adjustment valve provided in the flow rate adjustment valve unit 300 is operated and moved to the normal standby position.

  When a series of initial processing is completed, automatic water supply is started (step S300). That is, the control unit 500 (FIG. 2) opens the electromagnetic on-off valve 120 and starts introducing water from the water supply tank 20 provided in the aircraft into the water storage tank 200 via the water supply pipe 110.

  Here, when the aircraft is normally started, normal water is poured into the water supply tank 20 in the aircraft from the water supply valve 22 (FIG. 3). On the other hand, when sterilizing the in-machine water tank 20 or the water pipe connected thereto, for example, highly concentrated sterilized water containing about 100 ppm of chlorine is injected into the water tank 20 from the water supply valve 22. . Therefore, during normal startup, normal water is introduced into the water storage tank 200 of the sanitary washing device 10. On the other hand, when carrying out the sterilization treatment of the aircraft, sterilized water containing chlorine or the like is introduced into the water storage tank 200 of the sanitary washing device 10.

  At the time of normal startup, the maintenance / inspection operator only has to turn on the sanitary washing device 10. On the other hand, when the sterilization treatment with the sterilizing water is performed, the sterilization mode of the sanitary washing device 10 is turned on. The on / off of the sterilization mode can be set, for example, by a switch operation of a maintenance / inspection operator. Specifically, for example, the sterilization mode can be turned on when the operator operates a switch provided on the main body 12 (FIG. 1) of the sanitary washing device 10 or a remote controller.

FIG. 5 is a schematic diagram illustrating a specific example of the remote controller.
The remote controller 900 of this specific example includes a “tail” switch 902, a “soft” switch 904, a “bidet” switch 906, a “stop” switch 908, a “dry” switch 910, and the like. When the “wet” switch 902, “soft” switch 904 or “bidet” switch 906 is operated, the water discharge nozzle advances from the main body 12 and water is sprayed to the “butt” of the user. When the “dry” switch 910 is operated, the hot air damper is opened, and the hot air blows out toward the “buttock”. When the “stop” switch 908 is operated, cleaning by the water discharge nozzle and hot air drying are stopped.

  For example, when the worker presses the “stop” switch 908 continuously for 10 seconds or longer, the entire display unit 912 blinks for 2 seconds, and the worker further presses the “bidet” switch 906 for 5 seconds or longer. When pressed, the entire display unit 912 blinks again, and the sterilization mode can be turned on.

  In addition to the operation of the remote control 900 by the operator, for example, the sterilization mode can be set by outputting a signal from the aircraft control unit to the sanitary washing device 10 informing that the waterway system of the aircraft is being sterilized. It is possible to turn it on.

  Returning to FIG. 4 and continuing the description, when automatic water supply is started (step S300), the control unit 500 determines whether or not the sterilization mode is turned on (step S400). If the sterilization mode is not turned on (step S400: no), the normal water is supplied instead of the sterilization water, so the first water supply mode is executed. That is, it is determined whether the water storage tank 200 is full (step S500). Specifically, for example, the water level detection unit 250 provided in the water storage tank 200 determines whether or not the water level stored in the water storage tank 200 is at a predetermined level. In the present specification, “full water” does not necessarily mean a state where the water storage tank 200 is completely filled with water, but may be a state where water of a predetermined level or more is stored. That's fine.

  When the water storage tank 200 is not full (step S500: no), the automatic water supply is continued. On the other hand, when the water storage tank 200 is full (step S500: yes), the automatic water supply is terminated (step S600), and electric power is supplied to the heater attached to the water storage tank 200 to start heating the stored water. (Step S700). And it transfers to normal control (step S800). Thereby, sanitary washing apparatus 10 will be in a usable state. That is, for example, when the user operates the operation unit 900 (see FIG. 2), control for discharging water from the water discharge nozzle 410 is started accordingly.

On the other hand, when the sterilization mode is turned on (step S400: yes), the sanitary washing device 10 is supplied with sterilization water containing not chlorine but normal chlorine, so the second water supply mode. Migrate to That is, the control unit 500 determines whether or not the water storage tank 200 is full (step S410). Here, similarly to step S500, for example, the water level detector 250 provided in the water storage tank 200 can determine whether or not the water level stored in the water storage tank 200 is at a predetermined level.
When the water storage tank 200 is not full (step S410: no), the automatic water supply is continued. On the other hand, when the water storage tank 200 is full (step S410: yes), the automatic water supply is terminated (step S430). Then, it waits for a predetermined time to sufficiently fill the water channel system with sterilizing water, and further replaces the sterilizing water with normal water that does not include the sterilizing component introduced from the water supply tank 20 through the water supply pipe 110. (Step S440). Thereafter, heating is started by supplying electric power to the heater attached to the water storage tank 200 (step S700). And it transfers to normal control (step S800). Thereby, sanitary washing apparatus 10 will be in a usable state. The reason for replacing the water channel system with normal water in step S440 is to wash the water channel system to which the sterilizing water adheres. Therefore, the normal water introduced into the water channel system is not performed without performing steps S700 and S800. The sterilization mode may be terminated by discharging.

  As described above, according to the present embodiment, when normal water that does not include a sterilizing component is supplied to the sanitary washing device 10, the first water supply mode is executed, and the heater is used when the water storage tank 200 is full. Turn on to produce warm water. On the other hand, when sterilizing water containing chlorine or the like is supplied to the sanitary washing device 10, the second water supply mode is executed. In this case, the heater is not turned on even when the water storage tank 200 is full. After the sterilization, the sterilized water is replaced with normal water, and then the heater is turned on. If the heater is turned on while sterilizing water containing chlorine or the like is introduced into the water storage tank 200, the heater or other parts may be corroded. On the other hand, in this embodiment, since the heater is not turned on in a state where sterilizing water is introduced, corrosion and deterioration of parts such as the heater can be prevented. And the water system, such as the water supply pipe 110 of the sanitary washing apparatus 10, the water storage tank 200, the supply pipe | tube 111, and the water discharge nozzle 410, can be sterilized with sterilization water, and a clean state can be maintained.

  During the execution of the first water supply mode and the second water supply mode (step S400), for example, the alarm unit 800 notifies the user that the sanitary washing device 10 is being prepared or is being sterilized. You may notify suitably by these.

FIG. 6 is a flowchart showing a specific example of the standby / replacement (step S400) step.
When the standby / replacement step is started, a timer is first activated to determine whether or not the time T3 has elapsed (step S442). That is, the time T3 corresponds to a time for waiting in a state where the sterilizing water is introduced into the sanitary washing device 10.

  During this time, an aircraft maintenance / inspection operator replaces the sterilized water filled in the water tank 20 in the machine with normal water. That is, first, the sterilizing water filled in the water supply tank 20 is drained through the drain valve 24. Alternatively, the sterilizing water in the water supply tank 20 may be drained through another device (for example, a faucet for washing hands) that receives water from the water supply tank 20. Further, the operator pours water into the water supply tank 20.

  Therefore, the time T3 can be appropriately determined based on the time for holding the sterilizing water in the water supply tank 20 and the time for replacing the sterilizing water with normal water, and can be set to about 1 hour, for example. . If the sterilizing water is filled in the water channel system of the sanitary washing device for such a time, the water channel system can be sufficiently sterilized with the sterilizing water.

If time T3 passes (step S442: yes), automatic water supply will be started (step S444). That is, the controller 500 opens the electromagnetic on-off valve 120 and introduces normal water that does not contain a sterilizing component into the water storage tank 200. When normal water is poured into the water storage tank 200, the filled sterilizing water is pushed downstream and drained from a water outlet provided in the water discharge nozzle 410. This drainage falls into the bowl of the toilet 950.
Then, the controller 500 determines whether or not the sterilized water in the water storage tank 200 has been replaced with a predetermined amount of normal water (step S446). This can be done by time, for example. That is, it is possible to determine whether or not a predetermined time has elapsed since the start of automatic water supply. Further, as will be described in detail later, when automatic water supply is performed by intermittently opening the electromagnetic on-off valve 120, the determination may be made based on the number of times the electromagnetic on-off valve 120 is opened.
When it is determined that a predetermined amount of normal water has been introduced into the water storage tank 200 (step S446: yes), the automatic water supply is terminated (step S448).

  As described above, according to this example, the sanitary washing device 10 automatically executes the standby / replacement step, and replaces the sterilized water filled in the water storage tank 200, the water supply pipe 110, etc. with normal water. be able to.

FIG. 7 is a flowchart showing a second specific example of the step of standby / replacement (step S400).
In this specific example, when the standby / replacement step is started, the control unit 500 determines whether or not a replacement instruction has been issued (step S450). Here, the replacement command can be executed by, for example, operating the remote controller 900 by an aircraft maintenance / inspection operator. Specifically, for example, the replacement may be instructed by the operator pressing the “tail” switch 902 (FIG. 5). Alternatively, for example, the replacement can be instructed by outputting a signal indicating that the water channel system of the aircraft has been replaced with normal water from the control unit of the aircraft to the sanitary washing device 10.
Thereafter, it can be performed in the same manner as described above with reference to FIG.

  As described above, according to the present embodiment, after sterilizing water is introduced into the sanitary washing apparatus 10 and waiting for sterilization treatment, the sterilizing water is replaced with normal water automatically or by a switch operation or the like. Can do. As a result, the sanitary washing device 10 can be used again safely and cleanly.

  Here, in the automatic water supply (steps S300, S430, and S444) in the present embodiment, the electromagnetic on-off valve 120 may be continuously kept open, but may be intermittently opened.

FIG. 8 is a timing chart showing a specific example in which the electromagnetic on-off valve 120 is opened intermittently.
That is, the electromagnetic on-off valve 120 is intermittently opened by repeating the open state at time T1 and the closed state at time T2.

In this way, it is possible to fill the water storage tank 200 while suppressing heating of the electromagnetic on-off valve 120. That is, in order to fill the water storage tank 200, it may be considered that the electromagnetic on-off valve 120 is kept open. However, for example, water supply from the water supply tank 20 to which the sanitary washing device 10 is connected may be delayed. For example, in the sterilization process described above with reference to FIG. 4, the sanitary washing device 10 may be turned on first, and then sterilized water may be poured into the water supply tank 20 of the aircraft. Similarly, in the replacement process described above with reference to FIG. 6 or FIG. 7, normal water may be poured into the water supply tank 20 of the aircraft after the automatic water supply of the sanitary washing device 10 is started (step S444). Or although the sterilization water and the normal water are supplied to the sanitary washing apparatus 10, the water pressure may be low.
In such a case, if the normally closed electromagnetic on-off valve 120 is maintained in an open state, the electromagnetic on-off valve 120 may be heated by energization for a long period of time, which may hinder its operation.

  On the other hand, according to the specific example shown in FIG. 8, the normally closed electromagnetic on-off valve 120 is intermittently opened, thereby suppressing the heating of the electromagnetic on-off valve 120 and the water storage tank 200. It is possible to continue the state in which sterilizing water or normal water can be introduced over a long period of time. That is, even when the water supply to the sanitary washing device 10 is delayed or when normal water is supplied to the water storage tank 200 little by little in a state where the water pressure is low, the water storage tank 200 is suppressed while suppressing the heating of the electromagnetic on-off valve 120. Ordinary water can be supplied to fill up.

  Note that the open time T1 and the closed time T2 of the electromagnetic on-off valve 120 shown in FIG. 8 can be appropriately determined according to the structure of the electromagnetic on-off valve 120, heat-resistant temperature, environmental temperature, operating conditions, and the like. As a specific example, for example, the open time T1 can be about 1 minute, and the closed time T2 can be about 9 minutes. In consideration of the structure and operating conditions of a general electromagnetic on-off valve, heating of the electromagnetic on-off valve 120 can be more reliably prevented by controlling the time T2 in the closed state to be longer than the time T1 in the open state. desirable.

  Further, the time T1 and the time T2 do not need to be constant, and may be variable. For example, as will be described in detail later, the time T2 may be increased for each opening / closing operation. For example, if the temperature of the electromagnetic on-off valve 120 is detected and the temperature of the electromagnetic on-off valve 120 increases based on the result, the time T1 may be shortened or the time T2 may be lengthened. Similarly, the temperature of the atmosphere in which the sanitary washing device 10 is installed is detected, and based on the result, when the ambient temperature is high, the time T1 is set short or the time T2 is set long to execute automatic water supply. May be.

In addition, as shown in a partially enlarged view in FIG. 8, the drive voltage (or current) waveform for opening the electromagnetic on-off valve 120 does not supply continuous and constant power, but power is intermittent. Alternatively, the waveform may be supplied automatically. Specifically, as illustrated in FIG. 8, for example, the first 255 milliseconds can be supplied with power, and thereafter, the power supply can be turned on and off repeatedly every 1 millisecond. In this case, the electromagnetic on-off valve 120 transitions to the open state by the first 255 millisecond power supply. And the open state of the electromagnetic on-off valve 120 is maintained by the subsequent alternating signal of 1 millisecond. In this way, it is possible to suppress an increase in the temperature of the electromagnetic on-off valve 120 during the time T1, as compared with the case where power is continuously supplied.
FIG. 9 is a flowchart showing a modified example of the operation for intermittently opening the electromagnetic on-off valve 120.
In this modification, the time T2 when the electromagnetic on-off valve 120 is closed is lengthened each time the opening / closing operation is repeated. The electromagnetic on-off valve 120 tends to increase in temperature due to current flowing each time it is opened. On the other hand, in this modified example, heating of the electromagnetic on-off valve 120 can be suppressed by gradually increasing the time T2 of the closed state. Alternatively, for example, the time T1 when the electromagnetic on-off valve 120 is open may be shortened each time the opening / closing operation is repeated.

FIG. 10 is a flowchart showing a modification example of the present embodiment.
In this modified example, in the second water supply mode, the toilet drainage is executed after standby / replacement (step S440) (step S460). That is, when the sanitary washing device 10 is mounted on an aircraft, the installed toilet 950 is a so-called “vacuum” toilet. FIG. 11 is a schematic diagram showing a vacuum toilet.
An opening / closing valve 940 is provided at the bottom of the bowl 930 of the toilet 950, and can be freely opened and closed between the decompressed drainage passage 970. When the on-off valve 940 is closed, the airtightness and liquid tightness are substantially maintained. On the other hand, when the on-off valve 940 is opened, water in the bowl 930 is sucked and discharged to the drainage passage 970.

  During standby / replacement (step S460), as described above with reference to FIGS. 6 and 7, sterilizing water containing chlorine or the like is drained from the water discharge port of the water discharge nozzle 410 of the sanitary washing device 10 to the bowl 930 of the toilet 950. Is done. In the case of the vacuum toilet 950, the state in which the sterilizing water stays in the bowl 930 is maintained unless the on-off valve 940 is opened. Since the sterilizing water is corrosive, it is desirable not to contact the toilet 950 formed of stainless steel or the like for a long time. Also, from the viewpoint of the influence on the human body, it is better not to leave the sterilized water in the bowl 930.

  On the other hand, according to this modification, after the standby / replacement (step S440), the control signal is output from the control unit 500 to open the on-off valve 940 and drain the sterilized water retained in the bowl 930 ( Step S460). By carrying out like this, the influence of the sterilization water with respect to the corrosion of the toilet bowl 950 or a human body can be suppressed.

FIG. 12 is a flowchart illustrating a second modification of the present embodiment.
In this modified example, in the second water supply mode, after the water storage tank 200 is full (step S410: yes), the introduction of sterilizing water is continued for a time T4 (step S420). In this way, sterilizing water can be supplied to the water discharge nozzle 410 and discharged from the water discharge port. That is, as described above with reference to FIG. 2, whether or not the water storage tank 200 is full in step S410 can be detected by the water level detection unit 250 attached to the water storage tank 200. For example, when a float switch is used as the water level detection unit 250, when the float switch is turned on, the water level of the water storage tank 200 has reached the water level at which the float switch operates, but the water storage tank 200 is not necessarily completely sterilized. It is not always filled with water.

The water supply port to the water storage tank 200 is usually provided vertically below the water storage tank 200, while the water outlet from the water storage tank 200 to the flow rate adjustment valve unit 300 (FIG. 3) is provided in the water storage tank 200. It is often provided in the vertical upper part. This is because water is introduced from the lower side of the water storage tank 200 and hot water in the water storage tank 200 is pushed upward.
That is, when the water storage tank 200 is not completely filled with the sterilizing water, the sterilizing water is not supplied to the water discharge nozzle 410 on the downstream side.

  On the other hand, in this modified example, after determining that the water level is full based on the output from the water level detection unit 250, the water is further supplied to the water outlet of the water discharge nozzle 410 by continuing automatic water supply for a predetermined time T4. Can supply. As a result, the sterilization treatment can be completely performed up to the water discharge port of the water discharge nozzle 410 to clean it.

Next, as a third modification of the present embodiment, a sanitary washing device 10 that can drain the sterilized water filled in the water storage tank 200 to the upstream side will be described.
FIG. 13 is a block diagram showing the configuration of the water channel system of the sanitary washing device 10 of this modification.
In this modified example, a second flow path 150 that bypasses a part of the water supply pipe (first flow path) 110 is provided, and an open / close valve (second flow path open / close valve) 160 is provided in the second flow path 150. It has been. In the case of the specific example shown in FIG. 13, the second flow path 150 includes the primary side (upstream side) of the electromagnetic on-off valve 120 and the secondary side of the pressure regulating valve 130 in the water supply pipe (first flow path) 110. The side (downstream side) is connected.

  The on-off valve 160 provided in the second flow path 150 is closed when the water pressure on the primary side (the side close to the water supply tank) is high, and is opened when the water pressure on the primary side decreases. As the on-off valve 160, a pressure-responsive on-off valve that transitions to a closed state when water pressure of a predetermined value or more is received from the primary side can be used. That is, if the water pressure supplied from the water supply tank 20 is equal to or higher than a predetermined value, the on-off valve 160 is closed and the second flow path 150 is shut off. Therefore, the water supplied from the water supply tank 20 is supplied to the nozzle unit 400 via the water supply pipe 110, and the normal operation of the sanitary washing device 10 becomes possible.

  On the other hand, when the water pressure supplied from the water supply tank 20 decreases, the on-off valve 160 is opened. Then, the primary side and the secondary side of the electromagnetic on-off valve 120 are communicated. That is, as represented by an arrow A in FIG. 13, water is drained from the secondary side of the electromagnetic on-off valve 120 of the water supply pipe 110 to the primary side of the electromagnetic on-off valve 120 of the water supply pipe 110 through the second flow path 150. can do. Therefore, the water remaining in the section from the secondary side of the electromagnetic opening / closing valve 120 to the check valve 220 can be discharged toward the water supply tank 20 via the second flow path 150. The water inlet to the water storage tank 200 is provided vertically below the water storage tank 200 as described above. Therefore, the sterilizing water in the water storage tank 200 can be reliably and easily discharged through the second flow path 110.

  Here, in this specific example, the second flow path 150 is connected to the primary side of the electromagnetic on-off valve 120 and the secondary side of the pressure regulating valve 130. In this way, the primary pressure from the water supply tank 20 and the secondary pressure reduced by the pressure regulating valve 130 can be applied to the on-off valve 160, respectively. Therefore, it is possible to operate the on-off valve 160 more reliably and smoothly by using the pressure difference between the two.

  The water remaining on the secondary side of the check valve 220 is appropriately discharged from the water outlet of the nozzle unit 400 to the bowl of the toilet 950. At this time, the vacuum breaker 230 takes in air, thereby facilitating drainage.

When the aircraft is sterilized, as described above, the maintenance / inspection operator injects sterilized water into the water tank 20 in the machine via the water supply valve 22 and waits for a predetermined time. The sterilizing water can be drained through.
According to this modified example, the sterilizing water in the water storage tank 200 can be drained in the direction of the water supply tank 20 at this time. Moreover, in this case, when the water pressure in the water supply tank 20 decreases regardless of whether or not power is supplied to the sanitary washing device 10, the sterilizing water remaining in the water channel of the sanitary washing device 10 or the sterilizing water in the water storage tank 200 is removed. The water can be discharged in the direction of the water supply tank 20. That is, it is not necessary to perform draining operation by an operator, and it is not necessary to provide a special drainage mechanism, and drainage and drainage treatment of sterilizing water can be performed using the already provided water supply pipe.

FIG. 14 is a block diagram showing another specific example of this modification.
In this specific example, the second flow path 150 is connected between the electromagnetic on-off valve 120 and the pressure regulating valve 130. For example, when draining from the primary side to the secondary side of the pressure regulating valve 130 is satisfactory, the entire drain of the first flow path 110 can be smoothly performed according to the specific example described above with reference to FIG. On the other hand, if the drainage from the primary side to the secondary side of the pressure regulating valve 130 is not so good, but the drainage from the secondary side to the primary side is good, the modification example shown in FIG. It is possible to reliably drain water from the secondary side of the electromagnetic on-off valve 120.

FIG. 15 is a flowchart showing steps of standby / replacement (step S440) in this modification.
In this variation, in the standby / replacement step, the maintenance / inspection operator first drains the sterilizing water in the water supply tank 20 of the aircraft through the drain valve 24 (step S452). Then, the pressure on the primary side of the on-off valve 160 provided in the second flow path 150 of the sanitary washing device 10 decreases. When the pressure on the primary side falls below a predetermined value, the on-off valve 160 is opened, and the sterilizing water stored in the water storage tank 200 is drained from the water supply tank 20 toward the drain valve 24 via the second flow path 150. (Step S454).

  Thereafter, when the operator pours normal water into the water supply tank 20 (step S456) and issues a replacement command (step S450), automatic water supply is started (step S444). Thereafter, as described above with reference to FIGS. 6 and 7, the water storage tank 200 and the water channel system of the sanitary washing device 10 are replaced with ordinary water.

FIG. 16 is a flowchart showing another specific example of the step of standby / replacement (step S440) in this modification.
Also in this specific example, the sterilizing water stored in the water storage tank 200 is drained from the water supply tank 20 toward the drain valve 24 via the second flow path 150 (step S454). Then, the water level of the water storage tank 200 falls. If the control part 500 determines the fall of a water level based on the main force from the water level detection part 250 (FIG. 2), for example (step S454: yes), it will start automatic water supply (step S444). That is, the controller 500 opens the electromagnetic on-off valve 120 continuously or intermittently. At this time, if sterilizing water is being drained from the water storage tank 200, drainage to the upstream side is promoted via the electromagnetic on-off valve 120.

  When the maintenance / inspection operator pours normal water into the water supply tank 20 (step S456), the normal water is introduced into the water storage tank 200 of the sanitary washing device 10. Thereafter, as described above with reference to FIGS. 6 and 7, the water storage tank 200 and the water channel system of the sanitary washing device 10 are replaced with ordinary water. In this specific example, even if it takes time for the water to be poured into the water supply tank 20 after the automatic water supply is started (step S444), for example, as described above with reference to FIGS. If the electromagnetic on-off valve 120 is opened intermittently, heating of the electromagnetic on-off valve 120 can be prevented.

  As described above, according to this modification, when the maintenance / inspection operator drains the sterilized water stored in the water supply tank 20 of the aircraft, the sterilized water in the water storage tank 200 of the sanitary washing device 10 is supplied to the water supply tank. It can drain automatically in 20 directions. Moreover, in this case, when the water pressure in the water supply tank 20 decreases regardless of whether or not power is supplied to the sanitary washing device 10, the sterilizing water remaining in the water channel of the sanitary washing device 10 or the sterilizing water in the water storage tank 200 is removed. The water can be discharged in the direction of the water supply tank 20.

FIG. 17 is a schematic cross-sectional view illustrating the structure of an on-off valve 160 that can be used in this modification.
The on-off valve 160 of this specific example includes a housing 161 and a pressure receiving body 162 that is movably accommodated therein. The housing 161 has a first connection port 161A connected to the primary side of the electromagnetic on-off valve 120 and a second connection port 161B connected to the secondary side of the electromagnetic on-off valve 120. A spring 165 is provided between the first connection port 161 </ b> A and the pressure receiving body 162. The spring 165 applies an urging force so as to pull the pressure receiving body 162 toward the first connection port 161A. Further, the housing 161 is provided with a packing 164 for sealing the contact surface with the pressure receiving body 162 in a liquid-tight manner.

  FIG. 17A shows a state in which a predetermined water pressure is applied to the first connection port 161A. That is, this corresponds to the case where a predetermined water pressure is supplied from the water supply tank 20 in the modified example described above with reference to FIGS. At this time, the pressure receiving body 162 moves in the direction of the second connection port 161 </ b> B against the urging force of the spring 165 by the water pressure supplied from the water supply tank 20, and press-contacts the packing 164. As a result, the second connection port 161B is closed and the second flow path 150 is blocked. That is, as described above with reference to FIGS. 13 and 14, the normal use state is established, and the water supplied from the water supply tank 20 is supplied to the nozzle unit 400 via the water supply pipe 110. The water pressure required for the pressure receiving body 162 to shut off the second connection port 161B may correspond to the water pressure required for the operation of the sanitary washing device 10, for example, about 0.05 megapascal (MPa). Can be set.

  On the other hand, FIG. 17B shows a case where the supply water pressure is lowered. That is, when the water supply tank 20 is drained and the supply water pressure is reduced, the pressure receiving body 162 moves in the direction of the first connection port 161 </ b> A by the urging force of the spring 165. Then, the 2nd connection port 161B will be in an open state. The pressure receiving body 162 is provided with a water passage 162A, and the first connection port 161A and the second connection port 161B communicate with each other. That is, the second flow path 150 is in a communicating state, and water can be drained from the secondary side of the electromagnetic on-off valve 120 toward the primary side.

FIG. 18 is a schematic cross-sectional view illustrating a second specific example of the on-off valve 160 that can be used in this modification.
The on-off valve 160 of this specific example includes a housing 161 and a pressure receiving body 167 accommodated therein. The housing 161 has first to fourth connection ports 166A, 166B, 166C, 166D. The first connection port 166A and the second connection port 166B are connected to the primary side of the electromagnetic on-off valve 120. The third connection port 166C is connected to the secondary side of the electromagnetic on-off valve 120. On the other hand, a vacuum breaker (atmospheric suction valve) 168 is connected to the fourth connection port 166D.

  The pressure receiving body 167 can be configured as a valve body that can slide in the housing 166, or a diaphragm or membrane that can move its sealing surface.

  FIG. 18A shows a state in which a predetermined water pressure is applied to the first connection port 166A and the second connection port 166B. That is, this corresponds to the case where a predetermined water pressure is supplied from the water supply tank 20 in the modified example described above with reference to FIGS. When a predetermined water pressure is applied to the first connection port 166A and the second connection port 166B, water may initially flow into the housing 166 from these connection ports 166A, 166B. Therefore, the pressure received from the second connection port 166B side is higher than the pressure received by the pressure receiving body 167 from the first connection port 166A side. For this reason, the pressure receiving body 167 moves in the direction of the first connection port 166A, and the first connection port 166A is closed. As a result, the second flow path 150 is blocked. That is, as described above with reference to FIGS. 13 and 14, the normal use state is established, and the water supplied from the water supply tank 20 is supplied to the nozzle unit 400 via the water supply pipe 110.

  On the other hand, when the water supply tank 20 is drained and the water pressure is reduced, the pressure receiving body 167 receives the pressure of the water flowing in from the third connection port 166C and leaves the first connection port 166A, and then from the third connection port 166C to the first. A flow path to the connection port 166A is formed in the housing 166. At the same time, water remaining in the housing 166 is drained from the second connection port 166B. At this time, by taking in air from the vacuum breaker 168, drainage through the second connection port 166B is promoted. When a “floating type” atmospheric suction valve that opens and closes by a float having buoyancy with respect to water is used as the vacuum breaker 168, the water level in the space on the second connection port 166B side in the housing 166 decreases. Since the intake of air from the vacuum breaker 168 can be promoted, drainage can be further promoted.

  In this specific example, an urging force in a direction toward or away from the first connection port 166A may be applied to the pressure receiving body 167. Further, it is possible to open and close the on-off valve 160 by a pressure difference between the primary side and the secondary side without applying an urging force such as a spring to the pressure receiving body 167.

The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. For example, the features of the specific examples described above with reference to FIGS. 1 to 18 can be combined as appropriate within the technically possible range, and these are also included in the scope of the present invention.
Further, the structure of the sanitary washing device and the content of its operation are not limited to those described above with reference to FIGS. 1 to 18, and those skilled in the art can implement the present invention in the same manner by appropriately modifying the design. What can obtain an effect is also included in the scope of the present invention as long as it includes the gist of the present invention. For example, the water discharge nozzle may advance or retreat due to water pressure, or may have a multistage structure that can slide inside one or a plurality of cylinder bodies.

It is a model perspective view of the toilet apparatus concerning embodiment of this invention. It is a block diagram of the sanitary washing device concerning an embodiment of the invention. It is a block diagram showing the structure of the water channel system of the sanitary washing apparatus 10 of embodiment of this invention. It is a flowchart showing the operation | movement performed in the sanitary washing apparatus of this embodiment. It is a schematic diagram showing the specific example of a remote control. It is a flowchart showing the specific example of the step of standby and replacement (step S400). It is a flowchart showing the 2nd specific example of the step of standby / replacement (step S400). It is a timing chart showing the specific example which makes the electromagnetic on-off valve 120 open state intermittently. It is a flowchart showing the modification of the operation | movement which makes the electromagnetic opening-and-closing valve 120 an open state intermittently. It is a flowchart showing the modification of this embodiment. It is a schematic diagram showing a vacuum type toilet. It is a flowchart showing the 2nd modification of this embodiment. It is a block diagram showing the structure of the waterway system of the sanitary washing apparatus 10 of this modification. It is a block diagram showing another specific example of this modification. It is a flowchart showing the step of standby and replacement (step S440) in this modification. It is a flowchart showing another specific example of the step of standby / replacement (step S440) in this modification. It is a schematic cross section which illustrates the structure of the on-off valve 160 which can be used in this modification. It is a schematic cross section which illustrates the 2nd specific example of the on-off valve 160 which can be used in this modification.

Explanation of symbols

 DESCRIPTION OF SYMBOLS 10 Sanitary washing device, 12 Body part, 14 Toilet seat, 16 Toilet lid, 20 Water supply tank (water supply source), 22 Water supply valve, 24 Drain valve, 30 Power plug, 110 Water supply pipe (1st flow path), 111 Supply pipe, 112 Stop cock, 114 Strainer, 120 Electromagnetic on-off valve, 130 Pressure regulating valve, 140 Safety valve, 150 Flow path, 160 On-off valve, 161 Housing, 161A, 161B Connection port, 162 Pressure receiving body, 162A Water passage, 164 Packing, 165 Spring 166 housing, 166A, 166B, 166C, 166D connection port, 167 pressure receiver, 168 vacuum breaker, 200 water storage tank, 210 vacuum breaker, 220 check valve, 230 vacuum breaker, 250 water level detection unit, 300 flow rate adjustment valve unit, 400 nozzle unit, 410 water discharge nose 480 nozzle motor, 490 nozzle cleaning chamber, 500 control unit, 600 seating sensor, 800 notification unit, 900 remote control (operation unit), 902, 904, 906, 908, 910 switch, 912 display unit, 930 bowl, 940 open / close Valve, 950 Western-style toilet, 970 Drainage channel

Claims (6)

A water discharge nozzle for jetting water;
A water storage tank with a built-in heater;
A water level detection unit for detecting the level of water stored in the water storage tank;
A water supply pipe for supplying water from a water supply source to the water storage tank;
An electromagnetic on-off valve that opens and closes a flow path of water flowing through the water supply pipe;
A supply pipe for supplying water from the water storage tank to the water discharge nozzle;
A controller that controls opening and closing of the electromagnetic on-off valve and input power to the heater;
With
The controller is
When the supply of ordinary water to the water storage tank from the water supply source switch valve is opened condition, the ordinary water stored in the water storage tank reaches a predetermined water level is detected by the water level detection unit, wherein A first water supply mode in which the electromagnetic on-off valve is closed and power is supplied to the heater until the temperature of the normal water in the water storage tank reaches a target value;
Once the sterilizing water supplied to the water storage tank from the water supply source switch valve is opened condition, said that the sterilizing water stored in the water storage tank reaches a predetermined water level is detected by the water level detection unit, wherein A second water supply mode in which the electromagnetic on-off valve is closed and power is not supplied to the heater even if the temperature of the sterilizing water in the water storage tank does not reach the target value;
A sanitary washing device characterized in that In the second water supply mode, the control unit closes the electromagnetic on-off valve after the water level detection unit detects that the sterilized water stored in the water storage tank has reached a predetermined water level. The sanitary washing device according to claim 1, wherein the sterilizing water is further discharged from the water discharge nozzle through the supply pipe by further supplying sterilizing water from the water supply source to the water storage tank. In the second water supply mode, the control unit is configured to supply the new normal water from the water supply source to the water storage tank by opening the electromagnetic open / close valve again after the electromagnetic open / close valve is in the closed state, The sanitary washing device according to claim 1 or 2, wherein the sterilizing water stored in the water storage tank is replaced. The control unit intermittently controls the electromagnetic on-off valve when supplying normal water or sterilized water from the water supply source to the water storage tank in at least one of the first water supply mode and the second water supply mode. It is set as an open state, The sanitary washing apparatus as described in any one of Claims 1-3 characterized by the above-mentioned. A second flow path connecting the water supply pipe upstream of the electromagnetic on-off valve and the water supply pipe downstream of the electromagnetic on-off valve;
A second flow path opening / closing valve that is provided in the second flow path and transitions from a closed state to an open state when a supply pressure of water from the water supply source decreases;
The sanitary washing device according to any one of claims 1 to 4, further comprising: A toilet bowl having a bowl and an on-off valve provided between the bowl and the drain pipe;
The sanitary washing device according to any one of claims 1 to 5,
With
In the second water supply mode, the control unit outputs a control signal for opening the on-off valve to drain water staying in the bowl to the drain pipe.

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