JP5471847B2 - Sanitary washing device - Google Patents

Description

  Aspects of the present invention generally relate to a sanitary washing apparatus, and more specifically, to a sanitary washing apparatus for washing a user's “butt” or the like seated on a Western-style seated toilet with water.

  There is a control method for a hot water cleaning apparatus that controls the hot water cleaning apparatus to be in a stopped state when the temperature detected by the temperature detection sensor becomes equal to or higher than a predetermined upper limit temperature for a predetermined time or longer (Patent Document 1). Further, for example, there is a sanitary washing device having a function of sterilizing a nozzle that sprays water on the body of a user sitting on a toilet seat, a function of sterilizing a bowl of a toilet bowl, and the like.

  Here, for example, when the temperature detection sensor detects that the temperature of the washing water for washing the body of the user sitting on the toilet seat is abnormal, the control method described in Patent Document 1 is used. When control for stopping the sanitary washing device is executed, the user cannot use the function of the sanitary washing device. In this case, the user cannot use the function of the sanitary washing device, but can use the toilet. Therefore, it becomes easy to produce the reproduction | regeneration of the microbe suppressed by the function which disinfects the nozzle and the bowl of a toilet bowl.

  More specifically, for example, methylobacterium called pink slime or bacteria such as black mold may adhere to the nozzle or the bowl, and the bacteria may propagate in the nozzle or the bowl. When the bacteria propagate, for example, when a collection of bacteria called biofilms and their secretions (slimming, black stains) are formed, the sanitary washing device recovers the abnormality and executes the sterilization operation. However, it is difficult to remove the biofilm.

JP 2001-227035 A

  The present invention has been made based on recognition of such a problem, and an object of the present invention is to provide a sanitary washing device that can suppress the growth of bacteria even when the function is stopped due to an abnormality.

  1st invention is the sanitary washing apparatus installed in a toilet bowl, Comprising: The nozzle which has a water outlet, sprays water from the said water outlet, and wash | cleans a user's body, The sterilization which can produce | generate sterilization water A water generating means, a control for sterilizing the nozzle with the sterilizing water generated by the sterilizing water generating means, and a control for stopping the function of washing the user's body when it is determined that there is an abnormality. A sanitary washing apparatus comprising: a control unit that may execute control for sterilizing the nozzle with the sterilizing water even when it is determined that there is an abnormality.

  According to this sanitary washing device, the control unit sterilizes the nozzle with the sterilizing water generated by the sterilizing water generating means, and the control to stop the function of cleaning the user's body when it is determined that there is an abnormality. Execute. Further, the control unit can sterilize the nozzle even when it is determined that there is an abnormality that stops the function of washing the body. Therefore, even when the function of washing the body is stopped, it is possible to prevent bacteria from growing in the flow path, the nozzle spout, and the nozzle body. As a result, after the state where there is an abnormality that stops the function of washing the body changes to the state where there is no abnormality, the inside of the flow path, the nozzle spout, and the body of the nozzle are kept clean. be able to.

  The second invention is a sanitary washing device that is installed in a toilet and sprays water to wash a user's body, and includes a sterilizing water generating means capable of generating sterilizing water, and the sterilizing water generating means. A control for sterilizing the toilet with the generated sterilizing water and a control for stopping the function of washing the user's body when it is determined that there is an abnormality, and even when it is determined that there is an abnormality, A sanitary washing apparatus comprising: a control unit that may execute control for sterilizing the toilet bowl with sterilized water.

  According to this sanitary washing device, the control unit controls the sterilization of the toilet with the sterilized water generated by the sterilized water generating means, and the control for stopping the function of cleaning the user's body when it is determined that there is an abnormality. And execute. Further, the control unit can sterilize the toilet even when it is determined that there is an abnormality that stops the function of washing the body. Therefore, even when the function of washing the body stops, it is possible to suppress the propagation of bacteria inside the flow path and the surface of the bowl of the toilet bowl. Thereby, after the state with the abnormality that stops the function of washing the body changes to the state without the abnormality, the inside of the flow path and the surface of the bowl of the toilet bowl can be kept clean.

  Further, the third invention further comprises a human body detecting means for detecting a human body in the first or second invention, and when the control unit determines that there is the abnormality, the human body detecting means is a human body. When this is detected, the sanitary washing apparatus is characterized in that the sterilization control is executed with the sterilizing water.

  According to this sanitary washing device, when it is determined that there is an abnormality that stops the function of washing the body, the control unit sterilizes at least one of the nozzle and the toilet only when the human body detecting means detects the human body. can do. More specifically, when the control unit determines that there is an abnormality that stops the function of cleaning the body, the control unit of the nozzle and the toilet is used only after the user uses at least one of the sanitary cleaning device and the toilet. At least one of them can be sterilized. Therefore, the frequency | count of sterilization of a nozzle and a toilet bowl can be reduced rather than the case where there is no abnormality which stops the function which wash | cleans a body. Thereby, the burden of the sanitary washing apparatus in which abnormality has occurred can be reduced.

  According to a fourth aspect of the present invention, in the first or second aspect, when the control unit does not determine that there is an abnormality, the sterilization by the sterilizing water generating unit is periodically performed, and the abnormality In the sanitary washing apparatus, the sterilization is periodically performed at a longer time interval when it is determined that there is an abnormality than when the abnormality is not determined.

  According to this sanitary washing device, when the control unit determines that there is an abnormality that stops the function of cleaning the body, at least one of the nozzle and the toilet at a longer time interval than when it is determined that there is no abnormality. Sterilize regularly. Therefore, the burden on the sanitary washing device in which an abnormality has occurred can be reduced.

  The fifth aspect of the present invention further includes a toilet flushing switch for inputting a toilet flushing instruction for flowing flush water to the toilet according to any one of the first to third aspects, wherein the controller When it is determined that there is a sanitary washing apparatus, the control for sterilizing with the sterilizing water is executed in response to the input of the instruction to the toilet bowl washing switch.

  According to this sanitary washing device, when it is determined that there is an abnormality that stops the function of washing the body, the control unit sterilizes at least one of the nozzle and the toilet when the user instructs toilet cleaning. That is, when it is determined that there is an abnormality that stops the function of washing the body, the control unit can sterilize at least one of the nozzle and the toilet only when the user instructs toilet cleaning.

  When the user instructs toilet cleaning, the sterilizing water adhering to the surface of the bowl of the toilet is flushed with the cleaning water for cleaning the toilet. Therefore, the control unit can hold the sterilized water in a state of being attached to the surface of the bowl by sterilizing the toilet after the user instructs toilet cleaning. Thereby, it is possible to further suppress the growth of bacteria in the nozzle and the toilet while reducing the burden on the sanitary washing device in which an abnormality has occurred. In addition, after reducing the burden on the sanitary washing device in which an abnormality has occurred and changing the state where there is an abnormality that stops the function of washing the body to a state in which there is no abnormality, the nozzle and toilet are more clean Can be kept in.

  According to a sixth aspect of the present invention, in the first or second aspect of the invention, the control unit performs control to sterilize with the sterilizing water when the control unit changes to a state in which the abnormality is not determined after the determination. It is the sanitary washing apparatus characterized by performing.

  According to this sanitary washing device, the control unit sterilizes at least one of the nozzle and the toilet bowl when it is determined that there is an abnormality that stops the function of washing the body and then it is determined that there is no abnormality. Therefore, the nozzle and the toilet bowl can be kept clean for the next person who uses the sanitary washing device and the toilet bowl, respectively.

  According to the aspect of the present invention, there is provided a sanitary washing device capable of suppressing the growth of bacteria even when the function is stopped due to an abnormality.

It is a perspective schematic diagram showing the toilet apparatus provided with the sanitary washing apparatus concerning embodiment of this invention. It is a block diagram showing the principal part structure of the sanitary washing apparatus concerning this embodiment. It is a flowchart for demonstrating the disinfection mode determination of this embodiment. It is a flowchart for demonstrating the normal mode of this embodiment. It is a timing chart for demonstrating the disinfection operation | movement of the nozzle in normal mode. It is a timing chart for demonstrating the sterilization operation | movement of the toilet bowl in normal mode. It is a flowchart for demonstrating the abnormal mode of this embodiment. It is a timing chart for demonstrating the disinfection operation | movement of the nozzle and toilet bowl in abnormal mode. It is a timing chart which illustrates the example of the sterilization operation | movement of the sanitary washing apparatus concerning this embodiment. It is a timing chart which illustrates other examples of sterilization operation of the sanitary washing device concerning this embodiment. 12 is a timing chart illustrating still another specific example of the sterilization operation of the sanitary washing device according to the embodiment. 12 is a timing chart illustrating still another specific example of the sterilization operation of the sanitary washing device according to the embodiment. 12 is a timing chart illustrating still another specific example of the sterilization operation of the sanitary washing device according to the embodiment. 12 is a timing chart illustrating still another specific example of the sterilization operation of the sanitary washing device according to the embodiment. It is a flowchart for demonstrating the abnormal mode in case a body washing function is stopped by warm water temperature abnormality. It is a timing chart which illustrates the example of sterilization operation in case a body washing function is stopped by warm water temperature abnormality. 12 is a timing chart illustrating still another specific example of the sterilization operation of the sanitary washing device according to the embodiment. 12 is a timing chart illustrating still another specific example of the sterilization operation of the sanitary washing device according to the embodiment. 12 is a timing chart illustrating still another specific example of the sterilization operation of the sanitary washing device according to the embodiment. It is a conceptual schematic diagram showing the concept of operation | movement of the sanitary washing apparatus concerning this embodiment, and the state of a flow path. It is a conceptual schematic diagram showing the other concept of the operation | movement of the sanitary washing apparatus concerning this embodiment, and the state of a flow path. It is a timing chart which illustrates the example of operation | movement of the sanitary washing apparatus concerning this embodiment. It is a cross-sectional schematic diagram which illustrates the specific example of the electrolytic cell unit of this embodiment. It is a perspective schematic diagram which illustrates the example of the nozzle unit of this embodiment. It is a cross-sectional schematic diagram which illustrates the specific example of the sterilization water spouting port of this embodiment.

Embodiments of the present invention will be described below with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
FIG. 1 is a schematic perspective view showing a toilet apparatus provided with a sanitary washing device according to an embodiment of the present invention.
Moreover, FIG. 2 is a block diagram showing the principal part structure of the sanitary washing apparatus concerning this embodiment. In addition, FIG. 2 represents together the principal part structure of the waterway system and the electrical system.

  The toilet device shown in FIG. 1 includes a Western-style seat toilet (hereinafter simply referred to as “toilet” for convenience of explanation) 800 and a sanitary washing device 100 provided thereon. The sanitary washing 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 freely opened and closed.

  Inside the casing 400 is incorporated a body washing function unit that implements washing of a user who sits on the toilet seat 200 such as a “butt”. In addition, for example, the casing 400 is provided with a seating detection sensor (human body detection means) 404 that detects that a user is sitting on the toilet seat 200. When the seating detection sensor 404 detects a user sitting on the toilet seat 200, when the user operates the operation unit 500 such as a remote controller, for example, a cleaning nozzle (hereinafter simply referred to as “nozzle”) 473. Can be advanced into the bowl 801 of the toilet bowl 800. In the sanitary washing device 100 shown in FIG. 1, the nozzle 473 has entered the bowl 801.

  One or a plurality of water discharge ports 474 are provided at the tip of the nozzle 473. And the nozzle 473 can wash | clean the "buttock" etc. of the user who sat on the toilet seat 200 by injecting water from the spout 474 provided in the front-end | tip part. In the present specification, “water” includes not only cold water but also heated hot water.

  More specifically, as shown in FIG. 2, the sanitary washing device 100 according to the present embodiment is a flow that guides water supplied from a water supply source 10 such as a water supply or a water storage tank to a water outlet 474 of a nozzle 473. It has a path 20. An electromagnetic valve 431 is provided on the upstream side of the flow path 20. The electromagnetic valve 431 is an electromagnetic valve that can be opened and closed, and controls the supply of water based on a command from the control unit 405 provided in the casing 400. The flow path 20 is a secondary side downstream from the electromagnetic valve 431.

A hot water heater 441 is provided downstream of the electromagnetic valve 431. The hot water heater 441 heats the supplied water to make predetermined hot water. In addition, about warm water temperature, a user can set by operating the operation part 500, for example.
An electrolytic cell unit (sterilizing water generating means) 450 capable of generating sterilizing water is provided downstream of the hot water heater 441. The electrolytic cell unit 450 will be described in detail later.

  Downstream of the electrolytic cell unit 450, a flow rate switching valve 471 that adjusts the water flow (flow rate) and a flow path switching valve 472 that opens, closes, and switches water supply to the nozzle 473 and the nozzle cleaning chamber 478 are provided. Yes. The flow rate switching valve 471 and the flow path switching valve 472 may be provided as one unit. Subsequently, a nozzle 473 is provided downstream of the flow rate switching valve 471 and the flow path switching valve 472.

The nozzle 473 can advance and retract into the bowl 801 of the toilet bowl 800 under the driving force from the nozzle motor 476. That is, the nozzle motor 476 can advance and retract the nozzle 473 based on a command from the control unit 405.
And the control part 405 is supplied with electric power from the power supply circuit 401, and detects a user who is in front of the toilet seat 200 or an entrance detection sensor (human body detection means) 402 that detects a user entering the toilet room. Based on signals from a detection sensor (human body detection means) 403, a seating detection sensor 404 that detects the seating of the user on the toilet seat 200, an operation unit 500, and the like, an electromagnetic valve 431, a hot water heater 441, an electrolytic cell, etc. Operations of the unit 450, the flow rate switching valve 471, the flow path switching valve 472, and the nozzle motor 476 can be controlled.

  The seating detection sensor 404 can detect a human body existing above the toilet seat 200 immediately before the user sits on the toilet seat 200 or a user seated on the toilet seat 200. In other words, the seating detection sensor 404 can detect not only a user seated on the toilet seat 200 but also a user existing above the toilet seat 200. As such a seating detection sensor 404, for example, an infrared light emitting / receiving distance measuring sensor or the like can be used.

  In addition, the human body detection sensor 403 can detect a user in front of the toilet bowl 800, that is, a user present at a position spaced forward from the toilet seat 200. That is, the human body detection sensor 403 can detect a user who enters the toilet room and approaches the toilet seat 200. As such a human body detection sensor 403, for example, an infrared light projecting / receiving distance measuring sensor or the like can be used.

  The room entry detection sensor 402 can detect a user immediately after opening a toilet room door or entering a toilet room, or a user existing in front of the door. That is, the entrance detection sensor 402 can detect not only a user who has entered the toilet room, but also a user before entering the toilet room, that is, a user existing in front of the door outside the toilet room. As such a room entry detection sensor 402, a pyroelectric sensor, a microwave sensor such as a Doppler sensor, or the like can be used. When using a sensor that uses the microwave Doppler effect or a sensor that detects the object to be detected based on the amplitude (intensity) of the microwave transmitted and reflected, the user's The presence can be detected. That is, the user before entering the toilet room can be detected.

  In the toilet apparatus shown in FIG. 1, a recessed portion 409 is formed on the upper surface of the casing 400, and the entrance detection sensor 402 is provided so that a part of the recessed portion 409 is embedded. In the state where the toilet lid 300 is closed, the entrance detection sensor 402 detects the entrance of the user through the transmission window 310 provided near the base. For example, when the room entry detection sensor 402 detects a user, the control unit 405 can automatically open the toilet lid 300 based on the detection result of the room entry detection sensor 402. In addition, the seating detection sensor 404 and the human body detection sensor 403 are provided in a central portion in front of the casing 400. However, the installation form of the seating detection sensor 404, the human body detection sensor 403, and the entrance detection sensor 402 is not limited to this, and can be changed as appropriate. Further, all of the seating detection sensor 404, the human body detection sensor 403, and the entrance detection sensor 402 are not necessarily required. For example, only the seating detection sensor 404 may be provided.

  Also, the casing 400 is provided with various types of devices such as a “warm air drying function”, a “deodorizing unit”, and an “indoor heating unit” for blowing and drying hot air toward a “butt” of a user sitting on the toilet seat 200. A mechanism may be provided as appropriate. At this time, an exhaust port 407 from the deodorizing unit and an exhaust port 408 from the indoor heating unit are appropriately provided on the side surface of the casing 400. However, in the present invention, the sanitary washing function unit and other additional function units are not necessarily provided.

Next, the operation of the sanitary washing device according to the present embodiment will be described with reference to the drawings.
FIG. 3 is a flowchart for explaining the sterilization mode determination of the present embodiment.
First, the control unit 405 determines whether or not there is an abnormality that stops the function of cleaning the body of the user sitting on the toilet seat 200 (body cleaning function) (step S101).

Here, an abnormality that stops the body washing function will be described.
For example, if a hot water thermistor that detects the temperature of the water heated by the hot water heater 441 is disconnected, the control unit 405 cannot determine the temperature of the water heated by the hot water heater 441. It becomes impossible to control. Then, the control unit 405 determines that there is an abnormality that stops the body washing function (step S101: YES), prohibits the operation of the hot water heater 441, the electromagnetic valve 431, and the like and stops the body washing function. When it is determined that there is an abnormality that stops the body washing function (step S101: YES), the control unit 405 executes the abnormality mode (step S105). The abnormal mode will be described later in detail.

  The control unit 405 determining that there is an abnormality that stops the body washing function is not limited to when the hot water thermistor is disconnected. For example, a limiter thermistor for confirming that the temperature of the water heated by the hot water heater 441 is safe, an incoming thermistor for detecting the temperature of water supplied to the inside of a heat exchange unit (not shown) having the hot water heater 441, and the like. Even in the case of disconnection, the control unit 405 determines that there is an abnormality that stops the body washing function.

Or, for example, when the temperature of water changes due to sudden fluctuations in the water supply pressure, or when the temperature of the water becomes high due to some component abnormality, when a hot water thermistor or limiter thermistor detects the temperature change or high temperature. In addition, the control unit 405 determines that there is an abnormality that stops the body washing function.
Alternatively, for example, when it is detected that water has frozen, the control unit 405 determines that there is an abnormality that stops the body washing function.

  Further, the control unit 405 determining that there is an abnormality that stops the body washing function is not limited to the case where the abnormality related to the water temperature as described above occurs. As described above with reference to FIGS. 1 and 2, when the seating detection sensor 404 detects a user sitting on the toilet seat 200, the nozzle 473 can advance into the bowl 801 and spray water. Therefore, if the seating detection sensor 404 fails, the nozzle 473 cannot advance into the bowl 801. Also in this case, the control unit 405 determines that there is an abnormality that stops the body washing function.

  Alternatively, for example, when a toilet lid driving device that opens and closes the toilet lid 300 is provided, the control unit 405 can automatically open the toilet lid 300 based on the detection result of the entrance detection sensor 402. . Therefore, if the toilet lid driving device, the electric opening / closing board, or the entrance detection sensor 402 breaks down, the control unit 405 cannot automatically open the toilet lid 300. Also in this case, the control unit 405 determines that there is an abnormality that stops the body washing function.

  On the other hand, if the control unit 405 does not determine that there is an abnormality that stops the body washing function (step S101: NO), the control unit 405 executes the normal mode without stopping the body washing function (step S103).

FIG. 4 is a flowchart for explaining the normal mode of the present embodiment.
First, the control unit 405 determines whether or not the user has finished using the sanitary washing device 100 (step S201). When it is determined that the user has not finished using the sanitary washing device 100 (step S201: NO), the control unit 405 continues to execute the determination of step S201 (step S201).

  On the other hand, when it is determined that the user has finished using the sanitary washing device 100 (step S201: YES), the control unit 405 determines whether the sterilization start waiting time Ta has elapsed (step S203). . When the control unit 405 determines that the sterilization start waiting time Ta has not elapsed (step S203: NO), the control unit 405 continues to execute the determination of step S203 (step S203).

On the other hand, when it is determined that the sterilization start waiting time Ta has elapsed (step S203: YES), the control unit 405 starts sterilization of the nozzle 473 and the toilet bowl 800 (step S205).
Here, the sterilization operation of the nozzle 473 and the toilet bowl 800 in the normal mode will be described with reference to a timing chart.

FIG. 5 is a timing chart for explaining the sterilization operation of the nozzle in the normal mode.
When the user starts body washing (timing t11) and finishes the body washing (timing t12), the control unit 405 starts energization of the electrolytic cell unit 450 and starts generating sterilizing water (timing t12). . And the control part 405 sterilizes the nozzle 473 by controlling the electromagnetic valve 431, the flow volume switching valve 471, and the flow-path switching valve 472, and passing sterilization water (timing t12-t14). More specifically, the control unit 405 passes the sterilizing water through the flow path 20 and injects the sterilizing water from the water discharge port 474 and the water discharge unit 479 of the nozzle cleaning chamber 478 (see FIGS. 2 and 24). By doing so, the inside of the flow path 20, the portion of the water discharge port 474, and the outer peripheral surface (body) of the nozzle 473 can be sterilized.

  Subsequently, when the seating detection sensor 404, the room entry detection sensor 402, the human body detection sensor 403, etc. (hereinafter referred to as “human body detection means” for convenience of explanation) no longer detects a human body (timing t13), the sterilization start waiting time Ta is increased. When the time has elapsed, the control unit 405 controls the electromagnetic valve 431, the flow rate switching valve 471, and the flow path switching valve 472 to sterilize the nozzle 473 again by passing sterilizing water (timing t15 to t16). That is, in the timing chart shown in FIG. 5, when the human body detecting unit stops detecting the human body, the control unit 405 determines that the user has finished using the sanitary washing device 100.

  Further, when the sterilization start waiting time Ta elapses after the sterilization of the nozzle 473 is finished (timing t16), the control unit 405 controls the electromagnetic valve 431, the flow rate switching valve 471, and the flow path switching valve 472 to supply the sterilizing water. The nozzle 473 is sterilized again by passing water (timing t17 to t18). That is, in the normal mode, the control unit 405 periodically sterilizes the nozzle 473 after finishing body washing.

FIG. 6 is a timing chart for explaining the sterilization operation of the toilet in the normal mode.
When the sterilization start waiting time Ta elapses after the human body detecting means no longer detects the human body (timing t21), the control unit 405 controls the electromagnetic valve 431, the flow rate switching valve 471, and the flow path switching valve 472 to supply the sterilizing water. The toilet bowl 800 is sterilized by passing water (timing t22 to t23). More specifically, the control unit 405 passes the sterilizing water through the flow path 20 and injects the sterilizing water from the sterilizing water spout 411 (see FIG. 25) toward the bowl 801 of the toilet bowl 800. Thus, the surface of the bowl 801 of the toilet bowl 800 can be sterilized.

  Subsequently, when the sterilization start waiting time Ta elapses after the sterilization of the toilet bowl 800 is finished (timing t23), the control unit 405 controls the electromagnetic valve 431, the flow rate switching valve 471, and the flow path switching valve 472 to control the sterilizing water. The toilet bowl 800 is sterilized again by passing water (timing t24 to t25). That is, in the normal mode, the control unit 405 periodically sterilizes the toilet bowl 800 in the same manner as the sterilization operation of the nozzle 473.

FIG. 7 is a flowchart for explaining the abnormal mode of the present embodiment.
In the abnormal mode, the control unit 405 sets the waiting time until the sterilization is started to the sterilization start waiting time Tb longer than the sterilization start waiting time Ta in the normal mode (step S303). The sterilization start waiting time Tb is, for example, about twice as long as the sterilization start waiting time Ta in the normal mode.

The operations in steps S301 and S305 are the same as the operations in steps S201 and S205 described above with reference to FIG. That is, when it is determined that the sterilization start waiting time Tb has elapsed (step S303: YES), the control unit 405 starts sterilization of the nozzle 473 and the toilet bowl 800 (step S305).
Here, the sterilization operation of the nozzle 473 and the toilet bowl 800 in the abnormal mode will be described with reference to a timing chart.

FIG. 8 is a timing chart for explaining the sterilization operation of the nozzle and the toilet in the abnormal mode.
The sterilization operation (timing t31 to t35) in the normal mode is the same as the sterilization operation of the nozzle 473 and the toilet bowl 800 described above with reference to FIGS.

  Subsequently, it is assumed that the control unit 405 determines that there is an abnormality that stops the body washing function after the user starts body washing (timing t36). Then, the control unit 405 stops the body washing function. Further, as described above with reference to FIG. 3, the control unit 405 changes the mode of the sterilization operation from the normal mode to the abnormal mode, and executes the abnormal mode.

  When the sterilization start waiting time Tb elapses after the human body detecting means no longer detects the human body (timing t37), the control unit 405 controls the electromagnetic valve 431 and the flow rate switching even though there is an abnormality that stops the body washing function. The nozzle 473 and the toilet bowl 800 are sterilized by controlling the valve 471 and the flow path switching valve 472 and passing the sterilizing water (timing t38 to t39). Subsequently, when the sterilization start waiting time Tb elapses after the sterilization of the toilet bowl 800 is finished (timing t39), the control unit 405 controls the electromagnetic valve 431, the flow rate switching valve 471, and the flow path switching valve 472 to control the sterilizing water. The nozzle 473 and the toilet bowl 800 are sterilized again by passing water (timing t40 to t41).

  According to this embodiment, the control unit 405 can execute sterilization of the nozzle 473 and the toilet bowl 800 even when it is determined that there is an abnormality that stops the body washing function. Therefore, even when the body washing function is stopped, bacteria are prevented from breeding inside the flow path 20, the portion of the water outlet 474 of the nozzle 473, the body of the nozzle 473, and the surface of the bowl 801 of the toilet bowl 800. be able to. Thereby, after the state where there is an abnormality that stops the body washing function is changed to a state where there is no abnormality, the inside of the flow path 20, the portion of the water discharge port 474 of the nozzle 473, the body of the nozzle 473, and the toilet 800 The surface of the bowl 801 can be kept clean.

  As described above, the sterilization start waiting time Tb in the abnormal mode is longer than the sterilization start waiting time Ta in the normal mode. Therefore, when it is determined that there is an abnormality that stops the body washing function, the control unit 405 can periodically sterilize the nozzle 473 and the toilet bowl 800 with a time interval longer than that in the normal mode. Thereby, the burden of the sanitary washing device 100 in which an abnormality has occurred can be reduced.

Next, a specific example of the sterilization operation of the sanitary washing device according to the present embodiment will be described with reference to the drawings.
FIG. 9 is a timing chart illustrating a specific example of the sterilization operation of the sanitary washing device according to this embodiment.

  In this specific example, the control unit 405 does not periodically sterilize the nozzle 473 like the sterilization operation of the toilet bowl 800. According to this, since the frequency | count of sterilization of the nozzle 473 can be reduced, even when abnormality arises in the sanitary washing apparatus 100, the burden of the sanitary washing apparatus 100 in which the abnormality has occurred can be reduced.

  If it is not determined that there is an abnormality that stops the body washing function, the control unit 405 executes the normal mode. In the normal mode of this specific example, when 24 hours elapses after the human body detecting unit stops detecting the human body (timing t51), the control unit 405 sterilizes the toilet bowl 800 (timing t52 to t53). Subsequently, when 24 hours have elapsed since the sterilization of the toilet bowl 800 has ended, the control unit 405 sterilizes the toilet bowl 800 again (timing t54 to t55).

  Subsequently, when the control unit 405 determines that there is an abnormality that stops the body washing function after the user starts body washing, the control unit 405 stops the body washing function (timing t56). In addition, the control unit 405 changes the mode of the sterilization operation from the normal mode to the abnormal mode, and executes the abnormal mode. Then, when 48 hours elapse after the human body detecting means no longer detects the human body (timing t57), the control unit 405 sterilizes the toilet bowl 800 even though there is an abnormality that stops the body washing function (timing t58 to t58). t59). Subsequently, when 48 hours have elapsed since the sterilization of the toilet bowl 800 has ended, the control unit 405 sterilizes the toilet bowl 800 again (timing t60 to t61).

  According to this example, as described above with reference to FIG. 8, the sterilization start waiting time in the abnormal mode (48 hours in this example) is longer than the sterilization start waiting time in the normal mode (24 hours in this example). . Therefore, when it is determined that there is an abnormality that stops the body washing function, the control unit 405 can periodically sterilize the toilet bowl 800 with a time interval longer than that in the normal mode. Thereby, the burden of the sanitary washing device 100 in which an abnormality has occurred can be reduced.

FIG. 10 is a timing chart illustrating another specific example of the sterilization operation of the sanitary washing device according to this embodiment.
In this specific example, the control unit 405 periodically sterilizes the nozzle 473 similarly to the sterilization operation of the toilet bowl 800. That is, the control unit 405 sterilizes the nozzle 473 and the toilet bowl 800 at timings t72 to t73 and timings t74 to t75 in the normal mode of this specific example. In the abnormal mode of this specific example, when 48 hours have elapsed since the human body detecting unit no longer detects the human body (timing t77), the control unit 405 has an abnormality that stops the body washing function. The nozzle 473 and the toilet bowl 800 are sterilized (timing t78 to t79). Subsequently, when 48 hours elapse after the sterilization of the nozzle 473 and the toilet bowl 800 is completed, the control unit 405 sterilizes the nozzle 473 and the toilet bowl 800 again (timing t80 to t81).

  According to this specific example, since the number of times of sterilization of the nozzle 473 can be increased, the nozzle 473 can be kept in a cleaner state. Further, with respect to other effects, the same effects as those described above with reference to FIG. 9 can be obtained.

In this specific example, the time interval (24 hours, 48 hours) for periodically sterilizing the nozzle 473 and the time interval (24 hours, 48 hours) for periodically sterilizing the toilet 800 are: Although they are the same as each other, they are not limited to this. The time interval for periodically executing the sterilization of the nozzle 473 and the time interval for periodically executing the sterilization of the toilet bowl 800 may be different from each other. According to this, the control unit 405 can periodically perform sterilization at time intervals according to the usage environments of the nozzle 473 and the toilet bowl 800. Therefore, it is possible to further suppress the growth of bacteria in the nozzle 473 and the toilet bowl 800. Thereby, after the state with abnormality which stops a body washing | cleaning function changes to the state without the abnormality, the nozzle 473 and the toilet bowl 800 can be maintained in a cleaner state.
Moreover, about the time interval (24 hours, 48 hours) which performs regularly disinfection of the nozzle 473 and the toilet bowl 800, it can change suitably.

FIG. 11 is a timing chart illustrating still another specific example of the sterilization operation of the sanitary washing device according to this embodiment.
In this specific example, the control unit 405 does not periodically sterilize the nozzle 473 like the sterilization operation of the toilet bowl 800, as in the specific example described above with reference to FIG.

  In the normal mode of this specific example, when the user starts body washing (timing t91) and finishes the body washing (timing t92), the control unit 405 starts energization of the electrolytic cell unit 450, and sterilizing water. Generation is started (timing t92). Then, the control unit 405 sterilizes the nozzle 473 (timing t92 to t94).

  Subsequently, when 24 hours have elapsed since the human body detecting unit no longer detects the human body (timing t93), the control unit 405 sterilizes the toilet bowl 800 (timing t95 to t96). Subsequently, when 24 hours have elapsed since the sterilization of the toilet bowl 800 is completed, the control unit 405 sterilizes the toilet bowl 800 again (timing t97 to t98).

  Subsequently, if the control unit 405 determines that there is an abnormality that stops the body washing function after the user starts body washing again, the control unit 405 stops the body washing function (timing t99). In addition, the control unit 405 changes the mode of the sterilization operation from the normal mode to the abnormal mode, and executes the abnormal mode. And even if 5 minutes have passed since the human body detecting means no longer detects the human body (timing t100), the control unit 405 does not sterilize the toilet bowl 800 (timing t101).

  On the other hand, if the human body detecting means detects the human body again (timing t102) and then no longer detects the human body (timing t103) and 5 minutes have elapsed, the control unit 405 has an abnormality that stops the body washing function. Nevertheless, the toilet bowl 800 is sterilized (timing t104 to t105). That is, in the abnormal mode of this specific example, the control unit 405 sterilizes the toilet bowl 800 only after the user uses at least one of the sanitary washing device 100 and the toilet bowl 800. The operation at timings t106 to t109 is similar to the operation described above with respect to timings t102 to t105.

  According to this specific example, in the abnormal mode, the control unit 405 sterilizes the toilet bowl 800 only after the user uses at least one of the sanitary washing device 100 and the toilet bowl 800. Therefore, the number of times of sterilization of the nozzle 473 can be reduced as compared with the normal mode. Thereby, the burden of the sanitary washing device 100 in which an abnormality has occurred can be reduced.

FIG. 12 is a timing chart illustrating still another specific example of the sterilization operation of the sanitary washing device according to this embodiment.
In this specific example, the control unit 405 periodically sterilizes the nozzle 473 similarly to the sterilization operation of the toilet bowl 800. That is, in the normal mode of this specific example, the control unit 405 sterilizes the nozzle 473 and the toilet bowl 800 at the timings t115 to t116 and the timings t117 to t118. In the abnormal mode of this specific example, when the human body detecting unit detects the human body again (timing t122), and after 5 minutes have passed since the human body is not detected (timing t123), the control unit 405 Despite the abnormality that stops the cleaning function, the nozzle 473 and the toilet bowl 800 are sterilized (timing t124 to t125). The operation from timing t126 to t129 is the same as the operation described above with respect to timing t122 to t125. Other operations are the same as those described above with reference to FIG.

  According to this specific example, as described above with reference to FIG. 10, the number of times of sterilization of the nozzle 473 can be increased, so that the nozzle 473 can be kept in a cleaner state. Further, with respect to other effects, the same effects as those described above with reference to FIG. 11 can be obtained.

  In the specific examples shown in FIG. 11 and FIG. 12, the time interval (5 minutes) from when the human body detecting unit stops detecting the human body until the toilet 800 and the nozzle 473 are sterilized can be changed as appropriate. . Moreover, about the time interval (24 hours) which regularly sterilizes the nozzle 473 and the toilet bowl 800 in a normal mode, it can change suitably.

FIG. 13 is a timing chart illustrating still another specific example of the sterilization operation of the sanitary washing device according to this embodiment.
The operation at timings t131 to t139 in this specific example is the same as the operation at timings t91 to t99 described above with reference to FIG.

  Subsequently, when the user instructs toilet flushing to flow flush water into the toilet bowl 800 (timing t140) and the toilet cleaning is completed (timing t141), when the predetermined time T1 has elapsed, the control unit 405 has a body washing function. The toilet bowl 800 is sterilized in spite of an abnormality that stops the operation (timing t142 to t143). About the completion | finish of toilet bowl washing | cleaning, the timing at the time of completion | finish of toilet bowl washing | cleaning can be set, for example by presetting the washing | cleaning time from the instruction | indication of the toilet bowl washing start. That is, in the abnormal mode of this specific example, the control unit 405 sterilizes the toilet 800 when the user instructs toilet cleaning. The control unit 405 can determine the start and end of toilet flushing according to an instruction input by a user to a toilet flushing switch (not shown) provided in the operation unit 500 (see FIG. 2), for example.

  Subsequently, even when the human body detecting unit detects the human body again (timing t144) and then stops detecting the human body (timing t145), the user does not instruct the toilet bowl cleaning. Therefore, the control unit 405 does not sterilize the toilet bowl 800 in this case. Subsequently, the human body detection means detects the human body again (timing t146), and the user instructs toilet cleaning (timing t147). After that, when the human body detecting unit does not detect the human body and the predetermined time T1 has elapsed after the toilet cleaning is finished (timing t148), the control unit 405 sterilizes the toilet 800 again (timing t149 to t150).

  According to this specific example, in the abnormal mode, the control unit 405 sterilizes the toilet 800 when the user instructs toilet cleaning. When the user instructs toilet cleaning, the sterilizing water adhering to the surface of the bowl 801 is flushed with the cleaning water for cleaning the toilet bowl 800. Therefore, the control unit 405 can hold the sterilized water in a state where it is attached to the surface of the bowl 801 by sterilizing the toilet bowl 800 after the user instructs toilet cleaning. Thereby, it is possible to further suppress the growth of bacteria in the toilet bowl 800 while reducing the burden on the sanitary washing device 100 in which an abnormality has occurred. In addition, while reducing the burden on the sanitary washing device 100 in which an abnormality has occurred, the state in which there is an abnormality that stops the body washing function changes to a state in which there is no abnormality, and then the toilet bowl 800 is kept in a cleaner state. be able to.

FIG. 14 is a timing chart illustrating still another specific example of the sterilization operation of the sanitary washing device according to this embodiment.
In this specific example, the control unit 405 periodically sterilizes the nozzle 473 similarly to the sterilization operation of the toilet bowl 800. That is, the control unit 405 sterilizes the nozzle 473 and the toilet bowl 800 at the timings t155 to t156 and the timings t157 to t158 in the normal mode of this specific example. Further, in the abnormal mode of this specific example, when the user instructs toilet cleaning (timing t160) and the toilet cleaning is completed (timing t161), the control unit 405 performs body washing. Despite the abnormality that stops the function, the nozzle 473 and the toilet bowl 800 are sterilized (timing t162 to t163). The operation at timings t167 to t170 is similar to the operation described above with respect to timings t160 to t163. Other operations are the same as those described above with reference to FIG.

  According to this specific example, as described above with reference to FIG. 10, the number of times of sterilization of the nozzle 473 can be increased, so that the nozzle 473 can be kept in a cleaner state. Further, with respect to other effects, the same effects as those described above with reference to FIG. 13 can be obtained.

Next, the case where the control unit 405 determines that there is an abnormality that stops the body washing function when an abnormality relating to the temperature of water occurs will be described as an example.
FIG. 15 is a flowchart for explaining an abnormal mode when the body washing function is stopped due to a hot water temperature abnormality.

  First, the control unit 405 determines whether or not the temperature of water heated by the hot water heater 441 is normal as a sterilization operation based on the detected temperature of a hot water thermistor, for example (step S401). When the controller 405 determines that the temperature of the water heated by the hot water heater 441 is not normal as a sterilization operation (step S401: NO), the controller 405 continues to execute the determination of step S401 (step S401).

  On the other hand, when the control unit 405 determines that the temperature of the water heated by the hot water heater 441 is normal as the sterilization operation (step S401: YES), the control unit 405 starts sterilization of the nozzle 473 and the toilet bowl 800 (step S403). ).

FIG. 16 is a timing chart illustrating a specific example of the sterilization operation when the body washing function is stopped due to a hot water temperature abnormality.
In this specific example, when the controller 405 determines that the temperature of the water heated by the hot water heater 441 is not normal as the sterilization operation, the control unit 405 stops the functions of body washing and sterilization.

  First, the operation at timings t171 to t179 in this example is the same as the operation at timings t91 to 99 described above with reference to FIG. However, at timing t179, the control unit 405 determines that there is an abnormality that stops the body washing function due to an abnormal hot water temperature, and stops the functions of body washing and sterilization (timing t179).

  Subsequently, even when the user instructs toilet cleaning (timing t180) and the toilet cleaning is completed (timing t181), the control unit 405 does not sterilize the toilet 800 (timing t182). ). This is because at timing t179, it is determined that there is an abnormality that stops the body washing function due to an abnormal hot water temperature, and the sterilization function is stopped.

  Subsequently, it is assumed that the human body detection means detects the human body again (timing t183), and then the user instructs toilet cleaning (timing t184). In this case, the human body detection means does not detect the human body (timing t185), and even when the toilet bowl cleaning is finished (timing t186), the control unit 405 does not sterilize the toilet bowl 800. This is because, similarly to the timing t182, it is determined that there is an abnormality that stops the body washing function due to an abnormal hot water temperature, and the sterilization function is stopped.

  Subsequently, when the control unit 405 determines that the temperature of the water heated by the hot water heater 441 is normal as the sterilization operation, the control unit 405 releases the stop of the sterilization function (timing t187). Subsequently, the operation at timings t188 to t190 is similar to the operation described above with respect to the timings t183 to t186. Then, when the predetermined time T2 has elapsed since the toilet cleaning was finished (timing t190), the control unit 405 sterilizes the toilet 800 even though there is an abnormality that stops the body cleaning function (timing t191 to t192).

  That is, in the abnormal mode of this specific example, when the control unit 405 determines that the temperature of the water heated by the hot water heater 441 is not normal as the sterilization operation, the control unit 405 determines that the temperature is normal. The suspension of the sterilization function is canceled while the body washing function is stopped. And when predetermined time T2 passes after toilet bowl washing | cleaning complete | finished, the control part 405 sterilizes the toilet bowl 800, although there exists abnormality which stops a body washing function.

  In this specific example, the control unit 405 determines that the body washing function is to be stopped due to a hot water temperature abnormality, and the function of the sterilization operation is also stopped. In other words, the control unit 405 stops the function of the sterilization operation at the water temperature at which the body washing function is stopped. On the other hand, in the sterilization operation, the sterilization water is not directly applied to the body, so the temperature of the water that stops the function of the sterilization operation can be set to a higher temperature. In this case, the sterilization operation can be performed without delay after the body washing function is stopped, and effective sterilization can be performed. When the hot water temperature is abnormal, the hot water heater 441 normally stops. Therefore, in this case, the sterilization operation can be performed without affecting the hot water temperature.

  According to this specific example, in the abnormal mode, when the user instructs toilet cleaning, the control unit 405 sterilizes the toilet 800 with sterilized water at a more suitable temperature. When the user instructs toilet cleaning, the sterilizing water adhering to the surface of the bowl 801 is flushed with the cleaning water for cleaning the toilet bowl 800. Therefore, after the user instructs toilet cleaning, the control unit 405 sterilizes the toilet bowl 800 with sterilized water at a more suitable temperature, so that the sterilized water is more reliably retained in a state where it is attached to the surface of the bowl 801. can do. Further, since the control unit 405 sterilizes the toilet bowl 800 with sterilized water at a more suitable temperature, even when the user is in the vicinity of the sanitary washing device 100 or the toilet bowl 800, the toilet bowl 800 is sterilized while further ensuring safety. can do. Further, with respect to other effects, the same effects as those described above with reference to FIG. 13 can be obtained.

FIG. 17 is a timing chart illustrating still another specific example of the sterilization operation of the sanitary washing device according to this embodiment.
In this specific example, the control unit 405 periodically sterilizes the nozzle 473 similarly to the sterilization operation of the toilet bowl 800. That is, in the normal mode of this specific example, the control unit 405 sterilizes the nozzle 473 and the toilet bowl 800 at timings t205 to t206 and timings t207 to t208. Further, in the abnormal mode of this specific example, when a predetermined time T2 has elapsed since the toilet cleaning was completed (timing t220), the control unit 405 has the nozzle 473 and the nozzle 473, regardless of the abnormality that stops the body cleaning function. The toilet bowl 800 is sterilized (timing t221 to t222). Other operations are the same as those described above with reference to FIG.

  According to this specific example, as described above with reference to FIG. 10, the number of times of sterilization of the nozzle 473 can be increased, so that the nozzle 473 can be kept in a cleaner state. Further, with respect to other effects, the same effects as those described above with reference to FIG. 16 can be obtained.

  Note that the specific example described above with reference to FIGS. 16 and 17 shows the operation of stopping the sterilization function when the control unit 405 determines that the temperature of the water heated by the hot water heater 441 is not normal as the sterilization operation. And specific examples respectively applied to the specific examples described above with reference to FIG. However, the present invention is not limited to this, and the operation in which the function of sterilization is stopped and released based on the temperature of the water heated by the hot water heater 441 is applied to the specific examples described above with reference to FIGS. Also good. Even in this case, the same effects as those described above with reference to FIGS. 16 and 17 can be obtained.

FIG. 18 is a timing chart illustrating still another specific example of the sterilization operation of the sanitary washing device according to this embodiment.
The operation at timings t231 to t239 in this specific example is the same as the operation at timings t91 to 99 described above with reference to FIG. The operation at timings t240 to t242 in this specific example is the same as the operation at timings t57 to t59 described above with reference to FIG.

  Subsequently, when the control unit 405 determines that there is an abnormality that stops the body washing function and then changes to a state where it is not determined that there is an abnormality (timing t244), the control unit 405 cancels the stop of the body washing function and releases the nozzle 473 and the toilet bowl. 800 is sterilized (timing t244 to t255). That is, the control unit 405 sterilizes the nozzle 473 and the toilet bowl 800 as the return mode when it is determined that the body cleaning function has been recovered from the abnormality that stops the body washing function (timing t244 to t255).

  Further, since the stop of the body washing function is released, after the human body detecting means detects the human body (timing t246), the user can perform body washing (timing t247 to t248). Further, when the body washing is finished (timing t248), the control unit 405 sterilizes the nozzle 473 as the normal mode (timing t248 to t249).

  According to this example, the control unit 405 determines that there is an abnormality that stops the body washing function, and then sterilizes the nozzle 473 and the toilet bowl 800 when the state changes to a state where it is not determined that there is an abnormality. Nozzle 473 and toilet bowl 800 can be kept clean for the next person who uses 100 and toilet bowl 800, respectively.

  Further, as in the specific example shown in FIG. 18, the body washing function is stopped by temporarily turning off the sanitary washing device 100 (timing t243) and then turning on the sanitary washing device 100 again (timing t244). After determining that there is an abnormality to be performed, the state may change to a state in which it is not determined that there is an abnormality. In this case, it is more preferable that the control unit 405 stores that there is an abnormality that stops the body washing function. If it does so, the control part 405 will judge whether it returned from the past abnormality when the power supply of the sanitary washing apparatus 100 was turned on again, and when it has returned, the nozzle 473 and the toilet bowl 800 can be sterilized. . Also in this case, the nozzle 473 and the toilet bowl 800 can be kept clean for the next person who uses the sanitary washing device 100 and the toilet bowl 800, respectively.

FIG. 19 is a timing chart illustrating still another specific example of the sterilization operation of the sanitary washing device according to this embodiment.
In this specific example, the control unit 405 periodically sterilizes the nozzle 473 similarly to the sterilization operation of the toilet bowl 800. That is, the control unit 405 sterilizes the nozzle 473 and the toilet bowl 800 at the timings t255 to t256 and the timings t257 to t258 in the normal mode of this specific example. In the abnormal mode of this specific example, when 48 hours have elapsed since the human body detecting means no longer detects the human body (timing t260), the control unit 405 has an abnormality that stops the body washing function. The nozzle 473 and the toilet bowl 800 are sterilized (timing t261 to t262). Other operations are the same as those described above with reference to FIG.

  According to this specific example, as described above with reference to FIG. 10, the number of times of sterilization of the nozzle 473 can be increased, so that the nozzle 473 can be kept in a cleaner state. As for other effects, the same effects as those described above with reference to FIG. 18 can be obtained.

FIG. 20 is a conceptual schematic diagram illustrating the concept of the operation of the sanitary washing device and the state of the flow path according to the present embodiment.
Note that the state of the flow channel shown in FIG. 20 represents the internal state of the flow channel 20 on the downstream side of the electrolytic cell unit 450.
Here, a case where the nozzle 473 has a plurality of water discharge ports 474 will be described as an example.

  First, when the seating detection sensor 404 detects a user seated on the toilet seat 200 (timing t301), the control unit 405 opens the electromagnetic valve 431 and executes “waste water” (timing t301 to t302). Thereby, the cold water in the flow path 20 is drained, and warm water is prepared. At this time, the control unit 405 does not energize the electrolytic cell unit 450 and does not generate sterilizing water. Moreover, the execution time of “waste water” is, for example, about 6 to 15 seconds.

  Subsequently, when the user presses a “wet cleaning switch” (not shown) provided in the operation unit 500 (timing t302), the control unit 405 executes pre-cleaning (timing t302 to t303). More specifically, the control unit 405 controls the flow rate switching valve 471 and the flow path switching valve 472 to discharge water from all of the plurality of water discharge ports 474 and wash these water discharge ports 474. Also at this time, the control unit 405 does not energize the electrolytic cell unit 450 and does not generate sterilizing water. Therefore, the plurality of water outlets 474 are physically cleaned with water discharged by the water outlet 474 itself (including water reflected by the inner wall of the nozzle cleaning chamber). The execution time of the pre-cleaning is about 2 to 10 seconds, for example.

  Subsequently, the control unit 405 controls the flow rate switching valve 471 and the flow path switching valve 472 to cause the nozzle 473 to advance into the bowl 801 while ejecting water from the water discharger 479 provided in the nozzle cleaning chamber 478. . Therefore, the body of the nozzle 473 is cleaned with water sprayed from the water discharger 479 of the nozzle cleaning chamber 478 (timing t303 to t304). Also at this time, the control unit 405 does not energize the electrolytic cell unit 450 and does not generate sterilizing water. Therefore, the body of the nozzle 473 is physically cleaned with water sprayed from the water discharger 479 of the nozzle cleaning chamber 478. In addition, the execution time of the trunk cleaning at this time is, for example, about 1.2 to 2.5 seconds.

  Subsequently, the control unit 405 controls the flow rate switching valve 471 and the flow path switching valve 472 to inject water from the spout 474 for “wet washing”, and to remove the “butt” of the user seated on the toilet seat 200. Cleaning is performed (timing t304 to t305). At this time, the control unit 405 does not energize the electrolytic cell unit 450 and does not generate sterilizing water. Therefore, sterilizing water is not sprayed on the user's body.

  Subsequently, when the user presses a “stop switch” (not shown) by the operation unit 500 (timing t305), the control unit 405 performs pressure relief (timing t305 to t306). And the control part 405 accommodates the nozzle 473 in the casing 400, spraying water from the water discharging part 479 provided in the nozzle washing room 478 by controlling the flow volume switching valve 471 and the flow path switching valve 472 ( Timing t306 to t307). The body cleaning operation at timings t305 to t307 is the same as the body cleaning operation at timings t303 to t304.

  Subsequently, in a state where the nozzle 473 is housed in the casing 400, the control unit 405 controls the flow rate switching valve 471 and the flow path switching valve 472 to discharge water from all the plurality of water discharge ports 474, and The post-cleaning of the water outlet 474 is executed (timing t307 to t308). The post-cleaning operation is the same as the pre-cleaning operation at the timings t302 to t303, and the plurality of water discharge ports 474 are physically caused by water discharged by the water discharge ports 474 themselves (including water reflected by the inner wall of the nozzle cleaning chamber). Washed.

  Subsequently, for example, when 25 seconds elapses after the user leaves the toilet seat 200 (timing t308) (timing t309), the control unit 405 energizes the electrolytic cell unit 450 to generate sterilizing water. Then, the control unit 405 controls the flow rate switching valve 471 and the flow path switching valve 472 to discharge sterilizing water from all of the plurality of water outlets 474 and to perform pre-sterilization of these water outlets 474 (timing) t309 to t310). At this time, since the sterilizing water is discharged from the water outlet 474, the plurality of water outlets 474 are sterilized by the sterilizing water discharged by the water outlet 474 itself (including the sterilized water reflected by the inner wall of the nozzle cleaning chamber). . The execution time of the pre-sterilization is about 3 seconds, for example.

  Subsequently, the control unit 405 controls the flow rate switching valve 471 and the flow path switching valve 472 to advance the nozzle 473 into the bowl 801 while spraying sterilizing water from the water discharger 479 provided in the nozzle cleaning chamber 478. Then, it is stored in the casing 400 (timing t310 to t311). Therefore, the body of the nozzle 473 is cleaned with the sterilizing water sprayed from the water discharger 479 of the nozzle cleaning chamber 478. Note that the body cleaning execution time at this time is, for example, about 5 seconds.

  Subsequently, the control unit 405 controls the flow rate switching valve 471 and the flow path switching valve 472 to discharge sterilizing water from all of the plurality of water outlets 474 and to perform post-sterilization of these water outlets 474 ( Timing t311 to t312). The post-sterilization operation is the same as the pre-sterilization operation at timings t309 to t310, and the plurality of water outlets 474 are sterilized by the water discharged from the water outlet 474 itself (including water reflected by the inner wall of the nozzle cleaning chamber). Sterilized.

  Subsequently, after being left for a while, the control unit 405 drains the water in the flow path 20 in about 30 seconds (timing t313 to t314). Then, for example, when 8 hours have passed as the non-use time for body washing, the control unit 405 performs periodic sterilization of the nozzle 473. More specifically, similarly to the pre-sterilization at the timings t309 to t310 and the post-sterilization at the timings t311 to t312, the control unit 405 controls the flow rate switching valve 471 and the flow path switching valve 472, thereby The sterilizing water is discharged from the water outlet 474, and the pre-sterilization and the post-sterilization of these water outlets 474 are executed (timing t315 to t316, t316 to t317). Thereby, the inside of the flow path 20, the portion of the water discharge port 474 of the nozzle 473, and the body of the nozzle 473 can be kept clean. Subsequently, the control unit 405 drains water in the flow path 20 in about 30 seconds, for example (timing t317 to t318).

FIG. 21 is a conceptual schematic diagram showing another concept of the operation of the sanitary washing device and the state of the flow path according to the present embodiment.
Note that the state of the flow channel shown in FIG. 21 represents the state inside the flow channel 20 on the downstream side of the electrolytic cell unit 450, similarly to the conceptual schematic diagram shown in FIG.
In the embodiment described above with reference to FIG. 20, the case where body washing is performed as a series of operations after the user has been seated on the toilet seat 200 has been described as an example. On the other hand, in the embodiment shown in FIG. 21, a case where body washing is not executed as a series of operations after the user has been seated on the toilet seat 200 will be described as an example.

The operation of “waste water” at timings t331 to t332 is the same as the operation of “waste water” at timings t301 to t302 described above with reference to FIG.
Subsequently, since the user does not perform body washing as a series of operations after sitting on the toilet seat 200, the control unit 405 stands by with the electromagnetic valve 431 closed (timing t332 to t333).

  Subsequently, when, for example, 5 seconds elapses after the user leaves the toilet seat 200 (timing t333) (timing t334), the control unit 405 drains the water in the flow path 20 in, for example, approximately 30 seconds ( Timing t334 to t335). For example, when 8 hours elapse as a non-use time for body washing (timing t336), the control unit 405 performs periodic sterilization of the nozzle 473 (timing t336 to t338). The operation of “periodic sterilization” at timings t336 to t338 is the same as the operation of “periodic sterilization” at timings t315 to t317 described above with reference to FIG. Subsequently, the control unit 405 drains water in the flow path 20 in about 30 seconds, for example (timing t338 to t339).

  According to the present embodiment, the control unit 405 performs periodic sterilization of the nozzle 473 regardless of whether or not body washing is performed as a series of operations after the user is seated on the toilet seat 200. Therefore, the inside of the flow path 20, the portion of the water discharge port 474 of the nozzle 473, and the body of the nozzle 473 can be more reliably kept clean.

FIG. 22 is a timing chart illustrating a specific example of the operation of the sanitary washing device according to this embodiment.
First, when the seating detection sensor 404 detects a user seated on the toilet seat 200 (timing t401), the control unit 405 changes the flow rate switching valve 471 and the flow path switching valve 472 from “origin” to “SC (self-cleaning)”. The water discharge from all the water outlets 474 for switching, “wet cleaning” and “bidet cleaning” is enabled. The flow rate (water volume) at this time is, for example, about 450 cc / min.

  Subsequently, when the switching of the flow rate switching valve 471 and the flow path switching valve 472 is completed (timing t402), the control unit 405 opens the electromagnetic valve 431 and sets the hot water heater 441 to the “water draining mode”. Thereby, the cold water in the flow path 20 is drained, and warm water is prepared. Then, the control unit 405 closes the electromagnetic valve 431 after changing the setting of the hot water heater 441 from the “water draining mode” to the “heat retention control mode” (timing t403 to t404). This is because the hot water heater 441 generates residual heat even after being set to “OFF”. That is, the reason why the electromagnetic valve 431 is closed after the controller 405 changes the setting of the hot water heater 441 is to prevent so-called “post-boiling”.

  Subsequently, when the user presses a “wet washing switch” (not shown) provided in the operation unit 500 (timing t405), the control unit 405 moves the flow rate switching valve 471 and the flow path switching valve 472 from “origin” to “SC”. ", The electromagnetic valve 431 is opened, and the hot water heater 441 is set to" pre-cleaning mode, main cleaning mode, post-cleaning mode ". Thereby, the pre-cleaning of the nozzle 473 is performed. Subsequently, the control unit 405 switches the flow rate switching valve 471 and the flow path switching valve 472 from “SC” to “bypass 2”, and enables water to be injected from the water discharger 479 provided in the nozzle cleaning chamber 478 (timing). t406).

  Subsequently, the control unit 405 advances the nozzle 473 housed in the casing 400 to the “wet washing” position (timing t407 to t408). At this time, since the control unit 405 opens the electromagnetic valve 431, the body of the nozzle 473 is washed with water sprayed from the water discharger 479.

  Subsequently, the control unit 405 switches the flow rate switching valve 471 and the flow path switching valve 472 from “bypass 2” to “wet water flow 5”, and starts main cleaning (wet cleaning) (timing t408 to t410). For example, when the user changes the setting of the water flow in “wet washing” from “water flow 5” to “water flow 3” using the operation unit 500, the control unit 405 includes the flow rate switching valve 471 and the flow path switching valve 472. Is switched from “Toshiri water force 5” to “Toshiri water force 3” (timing t410 to t411). Then, the control unit 405 continues the main cleaning in “water force 3” (timing t411 to t412).

  In the operation at timings t401 to t412, the control unit 405 does not energize the electrolytic cell unit 450 and does not generate sterilizing water. Therefore, in the pre-cleaning (timing t405 to t406) and the body cleaning (timing t407 to t408), the nozzle 473 is physically cleaned with water. Further, in “wet washing” (timing t408 to t412), the “butting” of the user seated on the toilet seat 200 is washed with water sprayed from the water outlet 474 of the nozzle 473.

  When the user presses a “stop switch” (not shown) by the operation unit 500, the control unit 405 switches the flow rate switching valve 471 and the flow path switching valve 472 from “wetting water force 3” to “bypass 2”, and the nozzle cleaning chamber 478. The water can be ejected from the water discharger 479 provided at (timing t412). Subsequently, the control unit 405 stores the nozzle 473 that has advanced to the “wet washing” position in the casing 400 (timing t413 to t414). At this time, since the control unit 405 opens the electromagnetic valve 431 and does not energize the electrolytic cell unit 450, the body of the nozzle 473 is physically caused by water sprayed from the water discharge unit 479 of the nozzle cleaning chamber 478. To be washed.

  Subsequently, in a state where the nozzle 473 is housed in the casing 400, the control unit 405 switches the flow rate switching valve 471 and the flow path switching valve 472 from “bypass 2” to “SC”, and performs “wet cleaning” and “bidet cleaning”. The post-cleaning is performed by discharging water from all of the water outlets 474 for the “t” (timing t414 to t415). Also at this time, the control unit 405 opens the electromagnetic valve 431 and does not energize the electrolytic cell unit 450, so the portion of the water outlet 474 of the nozzle 473 is physically washed with water.

  As described above, the sanitary washing device 100 according to the present embodiment physically performs body washing and post-washing of the nozzle 473 with the supplied water. Thereby, the sewage and filth adhering to the nozzle 473 can be washed away and removed.

  Subsequently, after the user performs “wet-drying” appropriately and leaves the toilet seat 200 (timing t416), when a predetermined time (here, 25 seconds) elapses, the control unit 405 includes the flow rate switching valve 471 and the flow path. The switching valve 472 is switched from “origin” to “SC” to enable water discharge from all the water discharge ports 474 for “wet cleaning” and “bidet cleaning” (timing t417). Further, the control unit 405 opens the electromagnetic valve 431 and sets the hot water heater 441 to “the pre-cleaning mode, the main cleaning mode, and the post-cleaning mode” (timing t417). Furthermore, the control unit 405 starts energization of the electrolytic cell unit 450 and starts generating sterilizing water (timing t418). Thereby, the pre-sterilization of the nozzle 473 with the sterilizing water generated in the electrolytic cell unit 450 is performed. In addition, after the control unit 405 opens the electromagnetic valve 431 (timing t417), the energization to the electrolytic cell unit 450 is started (timing t418), and there is no water between the electrodes provided in the electrolytic cell unit 450. This is to prevent energization in the state.

  Subsequently, the control unit 405 switches the flow rate switching valve 471 and the flow path switching valve 472 from “SC” to “origin” (timing t419). After that, the control unit 405 advances the nozzle 473 stored in the casing 400 to the “most advanced” position (timing t420 to t421). At this time, since the control unit 405 opens the electromagnetic valve 431 and energizes the electrolytic cell unit 450, the body of the nozzle 473 is sterilized by the sterilizing water sprayed from the water discharge unit 479 of the nozzle cleaning chamber 478. The Subsequently, the control unit 405 stores the nozzle 473 that has advanced to the “most advanced” position in the casing 400 (timing t421 to t422). Also at this time, since the control unit 405 opens the electromagnetic valve 431 and energizes the electrolytic cell unit 450, the body of the nozzle 473 is caused by the sterilizing water sprayed from the water discharge unit 479 of the nozzle cleaning chamber 478. Sterilized.

  Subsequently, the control unit 405 switches the flow rate switching valve 471 and the flow path switching valve 472 from “origin” to “SC” again, and discharges water from all the water outlets 474 for “wet cleaning” and “bidet cleaning”. (Timing t422). At this time, since the control unit 405 opens the electromagnetic valve 431 and energizes the electrolytic cell unit 450, the portion of the water discharge port 474 of the nozzle 473 is sterilized by the sterilizing water discharged from the water discharge port 474 itself. . That is, the post-sterilization of the nozzle 473 with the sterilizing water generated in the electrolytic cell unit 450 is performed (timing t422 to t423).

  Subsequently, when the post-sterilization is finished, the control unit 405 stops energization of the electrolytic cell unit 450, and switches the flow rate switching valve 471 and the flow path switching valve 472 from “SC” to “origin” (timing t423).

  Subsequently, when a predetermined time (in this case, 8 hours) has passed as a non-use time for body washing, the control unit 405 switches the flow rate switching valve 471 and the flow path switching valve 472 from “origin” to “SC” again, Water discharge from all the water discharge ports 474 for “wet cleaning” and “bidet cleaning” is enabled (timing t424). Further, the control unit 405 opens the electromagnetic valve 431 and sets the hot water heater 441 to the “pre-cleaning mode, main cleaning mode, and post-cleaning mode” (timing t424). Furthermore, the control unit 405 starts energization of the electrolytic cell unit 450 and starts generating sterilizing water (timing t425). Thereby, the periodic sterilization of the nozzle 473 with the sterilizing water generated in the electrolytic cell unit 450 is performed (timing t424 to t426).

Next, a specific example of the electrolytic cell unit 450 of the present embodiment will be described with reference to the drawings.
FIG. 23 is a schematic cross-sectional view illustrating a specific example of the electrolytic cell unit of this embodiment.

As shown in FIG. 23, the electrolytic cell unit 450 includes an anode plate 451 and a cathode plate 452 therein, and can electrolyze tap water flowing through the inside by controlling the energization from the control unit 405. Here, tap water contains chlorine ions. This chloride ion is contained as salt (NaCl) or calcium chloride (CaCl ₂ ) in a water source (for example, groundwater, dam water, river water, etc.). Therefore, hypochlorous acid is produced by electrolyzing the chlorine ions. As a result, the water electrolyzed in the electrolytic cell unit 450 changes to a liquid containing hypochlorous acid.

  Hypochlorous acid functions as a sterilizing component, and a solution containing the hypochlorous acid, that is, sterilizing water, can efficiently remove or decompose or sterilize dirt caused by ammonia or the like. Here, in the present specification, “sterilizing water” refers to a solution containing more sterilizing components such as hypochlorous acid than tap water (also simply referred to as “water”).

  As described above, the tap water supplied from the heat exchanger unit 440 is electrolyzed in the electrolytic cell unit 450 to become a solution containing hypochlorous acid, and is led to the nozzle unit 470. The nozzle unit 470 includes a flow rate switching valve 471, a flow path switching valve 472, and a nozzle 473. The flow path switching valve 472 can guide the sterilizing water supplied from the electrolytic cell unit 450 to the water outlet 474 of the nozzle 473 or the nozzle cleaning chamber 478 (see FIGS. 2 and 24).

Next, a specific example of the nozzle unit of the present embodiment will be described with reference to the drawings.
FIG. 24 is a schematic perspective view illustrating a specific example of the nozzle unit of the present embodiment.

  As illustrated in FIG. 24, the nozzle unit 470 of the present embodiment includes a mounting base 475 as a base, a nozzle 473 supported by the mounting base 475, and a nozzle motor 476 that moves the nozzle 473. The nozzle 473 is slidable with respect to the mounting base 475 by a driving force transmitted from the nozzle motor 476 via a transmission member 477 such as a belt, as indicated by an arrow A shown in FIG. That is, the nozzle 473 can move straight in the axial direction (advance / retreat direction) of the nozzle 473 itself. The nozzle 473 can be moved forward and backward from the casing 400 and the mounting base 475.

  Further, the nozzle unit 470 of the present embodiment is provided with a nozzle cleaning chamber 478. The nozzle cleaning chamber 478 is fixed to the mounting base 475, and sterilizes or cleans the outer peripheral surface (body) of the nozzle 473 by spraying sterilizing water or water from a water discharge portion 479 provided therein. it can. That is, when the control unit 405 generates sterilizing water by energizing the anode plate 451 and the cathode plate 452 of the electrolytic cell unit 450, the body of the nozzle 473 is sterilized by the sterilizing water sprayed from the water discharge unit 479. The On the other hand, when the control unit 405 does not energize the anode plate 451 and the cathode plate 452 of the electrolytic cell unit 450, the body of the nozzle 473 is physically washed with water sprayed from the water discharger 479.

  More specifically, in a state where the nozzle 473 is accommodated in the casing 400, the portion of the water discharge port 474 of the nozzle 473 is substantially accommodated in the nozzle cleaning chamber 478. Therefore, the nozzle cleaning chamber 478 can sterilize or clean the portion of the water discharge port 474 of the nozzle 473 in the housed state by injecting sterilizing water or water from the water discharge portion 479 provided therein. In addition, the nozzle cleaning chamber 478 can sterilize or clean not only the portion of the water discharge port 474 but also the outer peripheral surface of the other portion by spraying water or sterilizing water from the water discharge portion 479 when the nozzle 473 advances and retreats. .

  Further, the nozzle 473 of this embodiment sterilizes or cleans the portion of the water outlet 474 by discharging sterilizing water or water from the water outlet 474 of the nozzle 473 itself in a state where the nozzle 473 is housed in the casing 400. be able to. Further, in the state where the nozzle 473 is housed in the casing 400, the portion of the water outlet 474 of the nozzle 473 is almost housed in the nozzle cleaning chamber 478, so that the sterilized water discharged from the water outlet 474 of the nozzle 473 or The water is reflected by the inner wall of the nozzle cleaning chamber 478 and is applied to the portion of the water discharge port 474. Therefore, the portion of the water discharge port 474 of the nozzle 473 is sterilized or cleaned by sterilizing water or water reflected from the inner wall of the nozzle cleaning chamber 478.

Next, a specific example of the sterilizing water spout 411 for injecting sterilizing water toward the bowl 801 of the toilet bowl 800 will be described with reference to the drawings.
FIG. 25 is a schematic cross-sectional view illustrating a specific example of the sterilizing water spouting port of this embodiment.
In addition, FIG. 25 is a cross-sectional schematic diagram when the toilet apparatus provided with the sanitary washing device 100 according to the present embodiment is viewed from the front.

  The sanitary washing device 100 according to the present embodiment includes a sterilizing water spout 411 that allows the sterilizing water to flow into or spray the bowl 801. The sterilizing water spout 411 is attached to the lower surface of the casing 400, for example. However, the installation position of the sterilizing water outlet 411 is not limited to this, and may be provided on the front surface of the casing 400, the upper part of the toilet bowl 800, the vertical center part of the toilet bowl 800, and the like. In addition, a spreader, a movable nozzle, or the like may be appropriately provided in the sterilizing water spouting port 411 in order to cause the sterilizing water to flow or spray the entire bowl 801.

  As described above, according to the present embodiment, the control unit 405 can sterilize the nozzle 473 even when it is determined that there is an abnormality that stops the body washing function. Alternatively, the control unit 405 can sterilize the toilet bowl 800 even when it is determined that there is an abnormality that stops the body washing function. Therefore, even when the body washing function is stopped, bacteria are prevented from breeding inside the flow path 20, the portion of the water outlet 474 of the nozzle 473, the body of the nozzle 473, and the surface of the bowl 801 of the toilet bowl 800. be able to. Thereby, after the state where there is an abnormality that stops the body washing function is changed to a state where there is no abnormality, the inside of the flow path 20, the portion of the water discharge port 474 of the nozzle 473, the body of the nozzle 473, and the toilet 800 The surface of the bowl 801 can be kept clean.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. As long as the features of the present invention are provided, those skilled in the art appropriately modified the design of the above-described embodiments are also included in the scope of the present invention. For example, the shape, size, material, arrangement, etc. of each element provided in the sanitary washing device 100 and the installation form of the nozzle 473, the nozzle washing chamber 478, and the sterilizing water outlet 411 are not limited to those illustrated. It can be changed as appropriate.
Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  Further, the sterilizing water generated in the electrolytic cell unit 450 may be a solution containing metal ions such as silver ions and copper ions. Alternatively, the sterilizing water generated in the electrolytic cell unit 450 may be a solution containing electrolytic chlorine, ozone, or the like. Alternatively, the sterilizing water generated in the electrolytic cell unit 450 may be acidic water or alkaline water. Alternatively, the sterilizing water generating means is not limited to the electrolytic cell. That is, the sterilizing water may be sterilizing water generated by dissolving a sterilizing agent and a sterilizing liquid in water.

  Further, in the embodiment of the present invention, when the control unit 405 determines that there is an abnormality that stops the body washing function, for example, the sterilization start waiting time is set to a longer time, or the human body detection means detects the human body. The sterilization operation is executed only after the detection or the sterilization operation is executed only after the user performs toilet cleaning, thereby reducing the burden on the sanitary washing device 100 in which an abnormality has occurred. Even when the body washing function is stopped, the nozzle 473 and the toilet bowl 800 can be kept clean. However, the control unit 405 is not limited to this, and the control unit 405 controls the flow rate switching valve 471 and the flow path switching valve 472 to reduce the flow rate of water supplied to the electrolytic cell unit 450. By increasing the concentration of the sterilizing water generated in 450, the burden on the sanitary washing device 100 in which an abnormality has occurred may be reduced. Also by this, the nozzle 473 and the toilet bowl 800 can be kept clean.

  10 water supply source, 20 flow path, 100 sanitary washing device, 200 toilet seat, 300 toilet lid, 310 transmission window, 400 casing, 401 power supply circuit, 402 entrance detection sensor, 403 human body detection sensor, 404 seating detection sensor, 405 control unit, 407 exhaust port, 408 discharge port, 409 recessed portion, 411 sterilizing water spout, 431 solenoid valve, 440 heat exchanger unit, 441 hot water heater, 450 electrolytic cell unit, 451 anode plate, 452 cathode plate, 470 nozzle unit, 471 flow rate switching valve, 472 flow path switching valve, 473 nozzle, 474 water outlet, 475 mounting base, 476 nozzle motor, 477 transmission member, 478 nozzle cleaning chamber, 479 water discharging unit, 500 operation unit, 800 Western-style toilet bowl, 801 bowl

Claims (6)

A sanitary washing device installed in a toilet,
A nozzle that has a water outlet, and jets water from the water outlet to wash the user's body;
Sterilizing water generating means capable of generating sterilizing water;
A control for sterilizing the nozzle with the sterilizing water generated by the sterilizing water generating means and a control for stopping the function of washing the user's body when it is determined that there is an abnormality, the abnormality is present. A control unit that may execute control to sterilize the nozzle with the sterilizing water even when it is determined,
A sanitary washing device characterized by comprising: A sanitary washing device that is installed in a toilet and sprays water to wash the user's body,
Sterilizing water generating means capable of generating sterilizing water;
A control for sterilizing the toilet bowl with the sterilized water generated by the sterilized water generating means and a control for stopping the function of washing the user's body when it is determined that there is an abnormality are performed. A control unit that may execute control to sterilize the toilet with the sterilizing water even when it is determined,
A sanitary washing device characterized by comprising: It further comprises a human body detecting means for detecting a human body,
The said control part performs the control which performs the said disinfection with the said disinfecting water, when the said human body detection means detects a human body, when it determines that the said abnormality exists, The hygiene of Claim 1 or 2 characterized by the above-mentioned. Cleaning device.   If the controller does not determine that there is an abnormality, it periodically executes the sterilization by the sterilizing water generating means, and if it determines that there is an abnormality, does not determine that there is an abnormality The sanitary washing apparatus according to claim 1 or 2, wherein the sterilization is periodically performed at a longer time interval. Further comprising a toilet flushing switch for inputting a toilet flushing instruction for flushing flushing water to the toilet;
The said control part performs control which carries out the said sterilization with the said sterilizing water according to the input of the said instruction | indication to the said toilet bowl washing | cleaning switch, when it judges that the said abnormality exists. The sanitary washing device according to any one of the above.   3. The sanitary washing according to claim 1, wherein the control unit executes the control of sterilizing with the sterilizing water when the control unit determines that the abnormality is present and then changes to a state where the abnormality is not determined. apparatus.