JP2011252371A - Sanitary washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sanitary washing device which can be used right after sterilization.SOLUTION: The sanitary washing device that is attached to a toilet bowl has a discharge port and comprises: a nozzle for washing a user's body by jetting water from the discharge port; a channel for guiding water supplied from a water supply source to the discharge port; a sterile water generating means which is provided midway through the channel and capable of generating sterile water; a heating means which is provided at the upstream of the sterile water generating means and capable of heating water supplied from the water supply source; a sterilization switch into which an instruction of sterilization operation to sterilize the nozzle with the sterile water is input; and a control section for executing control to perform the sterilization operation and to supply water heated by the heating means to the channel when the instruction is input into the sterilization switch.

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.

  The cleaning nozzle that cleans the body of the user sitting on the toilet seat, such as the “tail”, is exposed (advanced) at least partially from the casing to which the functional parts such as the cleaning nozzle and hot water tank are attached. Inject washing water into Therefore, there is a possibility that dirty water and filth may adhere to the cleaning nozzle. On the other hand, there is a sanitary washing device for washing away and removing sewage and dirt attached to the washing nozzle before and after body washing. Thereby, the washing nozzle is kept clean.

  However, when the sanitary washing apparatus is used for public use, an unspecified number of users use the washing nozzle. Therefore, there are relatively many users who are concerned about the cleanliness of the cleaning nozzle.

  Therefore, there is a sanitary washing device with a configuration in which high-temperature hot water is discharged to the outer surface of the discharge port of the butt nozzle and the bidet nozzle, which are human body washing nozzles, by pressing the sterilization switch on the remote control ( Patent Document 1). The sanitary washing device described in Patent Document 1 cleans and disinfects at least the outer surface of the human body washing nozzle with hot water at 45 to 70 ° C. Moreover, the human body washing nozzle has an antibacterial substance that suppresses the growth of microorganisms.

  However, there are cases where sufficient sterilization effect and bactericidal effect cannot be expected by sterilization with hot water. In addition, high temperature hot water is stored in the flow path from the hot water unit to the human body washing nozzle after high temperature washing sterilization, so when using the human body washing nozzle, it is necessary to remove the hot hot water. There is. It takes time to cool the flow path to a temperature suitable for washing the human body, excluding hot hot water in the flow path. Therefore, there is a problem that the user of the sanitary washing apparatus cannot use the sanitary washing apparatus immediately after the high temperature washing sterilization.

  In addition, there is a sanitary cleaning device configured to be capable of nozzle cleaning with a plurality of nozzle cleaning water having different physical properties and steam (Patent Document 2). When performing the nozzle cleaning in the sanitary cleaning device described in Patent Document 2, it is performed by pressing the nozzle cleaning switch on the remote controller. However, in the sanitary washing apparatus described in Patent Document 2, since nozzle cleaning is performed with nozzle cleaning water having a plurality of physical properties different in steam and temperature, the same problem as described above with respect to Patent Document 1 occurs.

JP-A-2005-90030 Japanese Patent No. 4175142

  This invention is made | formed based on recognition of this subject, and it aims at providing the sanitary washing apparatus which can be used immediately after sterilization.

  1st invention is the sanitary washing apparatus attached to a toilet bowl, Comprising: The nozzle which has a water outlet, injects water from the said water outlet, and wash | cleans a user's body, The water supplied from a water supply source Is provided in the middle of the flow path, and is provided upstream of the sterilized water generating means and supplied from the water supply source. Heating means capable of heating water, a sterilization switch for inputting an instruction for sterilization operation for sterilizing the nozzle with the sterilizing water, and when the instruction is input to the sterilization switch, the sterilization operation is executed, A sanitary washing apparatus comprising: a control unit that executes control for supplying water heated by a heating unit into the flow path.

  According to this sanitary washing device, when an instruction for a sterilization operation is input to the sterilization switch, the control unit executes the sterilization operation and supplies the water heated by the heating means into the flow path to execute the control. Therefore, the nozzle is sterilized with the sterilizing water generated by the sterilizing water generating means, and the flow path downstream of the sterilizing water generating means is replaced with the water heated by the heating means. Thereby, the user can use the sanitary washing apparatus immediately after the sterilization of the nozzle.

  Further, in a second invention according to the first invention, a branch path that branches from the flow path and guides water supplied from the water supply source to the surface of the nozzle, and a nozzle driving means that advances and retreats the nozzle, And the sterilization operation includes an operation of sterilizing the surface of the nozzle by causing the sterilizing water to flow through the branch passage while the nozzle driving means advances and retracts the nozzle. Device.

  According to this sanitary washing device, the sterilization operation includes an operation of sterilizing the surface of the nozzle by passing the sterilization water through the branch passage while moving the nozzle forward and backward by the nozzle driving means. Also, for example, when the toilet lid is open, or when the toilet lid is not provided, such as a public sanitary washing device, the user may advance or retract during the sterilization operation. The state to do can be visually observed. Therefore, the user can easily confirm that the sterilization operation of the nozzle is reliably performed, and can use the sanitary washing device with more peace of mind.

  In a third aspect based on the first aspect, the control unit performs control to maintain the sterilizing water in a state in which the sterilizing water is filled after the sterilization operation is performed. This is a sanitary washing device.

  According to this sanitary washing device, after the sterilization operation is performed, the sterilizing water is maintained in a state of being filled in the flow path. That is, the sterilizing water is held in the flow path downstream of the sterilizing water generating means, and the sterilizing effect is maintained longer by the held sterilizing water. Therefore, it is possible to sterilize the flow path downstream of the sterilizing water generating means more efficiently.

  According to a fourth aspect, in the third aspect, the control unit receives the sterilizing water filled in the flow path when an instruction to wash the body by spraying water from the nozzle is input. It is a sanitary washing device characterized by executing control for discharging water.

  According to this sanitary washing device, when an instruction to wash the body is input, the sterilized water filled in the flow path is discharged. Therefore, when the body such as the “butt” of the user sitting on the toilet seat is washed, the sterilizing water can be prevented from being sprayed onto the user's body.

  In addition, a fifth aspect of the present invention further comprises seating detection means for detecting the seating of the user in the second invention, and the sterilization switch is provided when the seating detection means detects the seating of the user. When the instruction of the sterilization operation is input, the control unit causes the sterilization operation to be executed without moving the nozzle back and forth.

  According to this sanitary washing device, when an instruction for sterilization operation is input to the sterilization switch while the seating detection means detects the seating of the user, the control unit executes the sterilization operation without moving the nozzle forward and backward. Let If the control unit advances and retracts the nozzle while the user is seated to sterilize, the user's excrement may be applied to the nozzle or the seated user may be sprayed with sterilized water. Therefore, in the fifth aspect, when the user is seated, the control unit causes the sterilization operation to be performed without moving the nozzle back and forth. Thereby, it can suppress that a user's excrement is applied to a nozzle, or sterilizing water is applied to the seated user.

  In addition, the sixth invention further includes a notifying means for notifying execution of the sterilization operation when an instruction of the sterilization operation is input to the sterilization switch in any one of the first to fifth inventions. This is a sanitary washing device characterized by.

  According to this sanitary washing device, the notification means notifies the execution of the sterilization operation when an instruction for the sterilization operation is input to the sterilization switch. Therefore, the user can confirm whether the nozzle has been sterilized or whether the nozzle is being sterilized by the notification means. Thereby, it can suppress that a user performs sterilization of a nozzle many times wastefully, and it can suppress that sterilization water is used wastefully.

  According to the aspect of the present invention, a sanitary washing apparatus that can be used immediately after sterilization is provided.

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 conceptual schematic diagram for demonstrating 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 timing chart showing the specific example of operation | movement of the sanitary washing apparatus concerning this embodiment. It is a timing chart showing the other specific example of operation | movement of the sanitary washing apparatus concerning this embodiment. It is a timing chart showing the other specific example of operation | movement of the sanitary washing apparatus concerning this embodiment. It is a timing chart showing the other specific example of operation | movement of the sanitary washing apparatus concerning 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”. Further, for example, the casing 400 is provided with a seating detection sensor (sitting detection means) 404 that detects that the 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 heat exchanger unit (heating means) 440 is provided downstream of the electromagnetic valve 431. The heat exchanger unit 440 includes a hot water heater 441. 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. When the user presses the sterilization switch 510 provided in the operation unit 500, the control unit 405 executes control for causing the electrolytic cell unit 450 to generate sterilizing water. The sterilizing water generated in the electrolytic cell unit 450 is sprayed from the water outlet 474 of the nozzle 473 or is sprayed toward the water outlet 474 of the nozzle 473 and the outer peripheral surface (body). Thereby, the flow path 20 downstream from the electrolytic cell unit 450, the branch path 22 described later, the portion of the water discharge port 474 of the nozzle 473, and the outer peripheral surface are sterilized by sterilizing water. That is, the sterilization switch 510 receives an instruction for the sterilization operation of the nozzle 473. Then, the user can sterilize the nozzle 473 with the intention of the user by pressing the sterilization switch 510 and instructing the sterilization of the nozzle 473. 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 receives a driving force from a nozzle motor (nozzle driving means) 476 and can advance or retreat into the bowl 801 of the toilet bowl 800. That is, the nozzle motor 476 can advance and retract the nozzle 473 based on a command from the control unit 405. On the other hand, the nozzle cleaning chamber 478 can sterilize or clean the outer peripheral surface of the nozzle 473 by spraying sterilizing water or water from a water discharge portion 479 (see FIG. 5) provided therein.

  Here, a branch path 22 that connects the flow path switching valve 472 and the nozzle cleaning chamber 478 is provided downstream of the flow path switching valve 472. That is, the branch path 22 branches from the flow path 20. The branch path 22 can guide water supplied from the water supply source 10 and sterilized water generated in the electrolytic cell unit 450 to the nozzle cleaning chamber 478. That is, the control unit 405 controls the flow path switching valve 472 to guide water or sterilizing water to the water discharge port 474 of the nozzle 473 through the flow path 20, or to discharge the water discharge part 479 of the nozzle cleaning chamber 478 through the branch path 22. Can guide water or sterilized water. Then, the water and the sterilized water guided to the water discharge part 479 of the nozzle cleaning chamber 478 through the branch path 22 are jetted toward the water discharge port 474 of the nozzle 473 and the outer peripheral surface.

  The control unit 405 is supplied with electric power from the power supply circuit 401 and detects an entrance detection sensor (entrance detection means) 402 that detects a user entering the toilet room, or a human body detection sensor that detects a user in front of the toilet seat 200. (Human body detection means) 403, a seating detection sensor 404 for detecting the seating of the user on the toilet seat 200, a signal from the operation unit 500, the electromagnetic valve 431, the hot water heater 441, and the electrolytic cell unit 450 In addition, the operations of 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 execute control to 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.

  As shown in FIG. 2, the sanitary washing device 100 includes a notification unit 600. The notification unit 600 notifies that the nozzle 473 has been sterilized based on a command from the control unit 405 after the nozzle 473 is sterilized. Alternatively, the notification unit 600 notifies that the nozzle 473 is sterilized based on a command from the control unit 405 during sterilization of the nozzle 473. That is, when the sterilization operation instruction is input to the sterilization switch 510, the notification unit 600 notifies the execution of the sterilization operation. Examples of the notification method include a method using sound, light, display, and the like. Further, the notification unit 600 may be provided as a part of the operation unit 500 or the casing 400, or may be provided as a separate body from the operation unit 500 or the casing 400. According to this, the user can confirm whether the nozzle 473 has been sterilized or whether the nozzle 473 is being sterilized by the notification unit 600. Therefore, it is possible to prevent the user from performing sterilization of the nozzle 473 many times, and it is possible to suppress the use of sterilized water.

  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 this embodiment will be described with reference to the drawings. FIG. 3 is a conceptual schematic diagram for explaining the operation of the sanitary washing device according to the present embodiment. FIG. 4 is a schematic cross-sectional view illustrating a specific example of the electrolytic cell unit of this embodiment.
FIG. 5 is a schematic perspective view illustrating a specific example of the nozzle unit of this embodiment.
In addition, FIG. 3 represents an example of operation | movement until a user leaves a toilet room after leaving a toilet room, and operation | movement of the sanitary washing apparatus at that time as a time series.

  As shown in FIG. 3, when the user enters the toilet room, the entrance detection sensor 402 detects the user immediately after entering the room by opening the door of the toilet room, for example (timing t1). Subsequently, when the user is seated on the toilet seat 200, the seating detection sensor 404 detects, for example, the user seated on the toilet seat 200 (timing t2). Subsequently, the user presses a butt cleaning switch (not shown) provided in the operation unit 500 to clean the body such as “wet” (timing t3). Subsequently, when the user leaves the toilet seat 200, the seating detection sensor 404 does not detect the user seated on the toilet seat 200 (timing t4). Subsequently, when the user leaves the toilet room, the entrance detection sensor 402 does not detect the user in the toilet room (timing t5).

  In the sanitary washing device 100 according to the present embodiment, the user can sterilize the nozzle 473 by pressing the sterilization switch 510 and instructing sterilization of the nozzle 473 at a desired timing. That is, the timing at which the user instructs the sterilization of the nozzle 473 may be a period T1 from when the entrance detection sensor 402 detects the user until the seating detection sensor 404 detects the user. Alternatively, the timing may be a period T2 from when the seating detection sensor 404 detects the user until the user instructs body washing. Alternatively, the timing may be a period T3 from when the user instructs body washing until the seating detection sensor 404 does not detect the user. Alternatively, the timing may be a period T4 from when the seating detection sensor 404 no longer detects the user until the room entry detection sensor 402 no longer detects the user.

  When the user presses the sterilization switch 510 at the timing of at least one of the periods T1, T2, T3, and T4, the control unit 405 of the present embodiment generates sterilizing water in the electrolytic cell unit 450 and executes the sterilization operation. Let Further, the control unit 405 executes warm water preparation for supplying water heated by the hot water heater 441 into the flow path 20. In the hot water preparation, the control unit 405 controls the hot water heater 441 to discharge water from the water outlet 474. That is, in the warm water preparation, the water in the flow path 20 is discharged from the water outlet 474, and the water in the flow path 20 downstream of the heat exchanger unit 440 is replaced with water heated in the heat exchanger unit 440. It is. Thereby, the flow path 20 on the downstream side of the heat exchanger unit 440 can be warmed. Therefore, it is possible to prevent cold water from being sprayed on the user's “buttock” or the like when washing the user ’s “buttock” sitting on the toilet seat 200.

  In the present embodiment, when the user presses the sterilization switch 510, the control unit 405 causes the nozzle 473 to perform a sterilization operation and prepares hot water. Therefore, the nozzle 473 is sterilized with the sterilizing water generated by the electrolytic cell unit 450, and the flow path 20 on the downstream side of the electrolytic cell unit 450 is replaced with water heated by the hot water heater 441. Thus, the user can use the sanitary washing device 100 immediately after the nozzle 473 is sterilized.

Here, the electrolytic cell unit 450 of the present embodiment will be described with reference to the drawings.
As shown in FIG. 4, the electrolytic cell unit 450 includes an anode plate 451 and a cathode plate 452 inside thereof, and can electrolyze tap water flowing through the inside by controlling 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. The nozzle unit 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. Here, the nozzle unit of the present embodiment will be described with reference to the drawings.

  As illustrated in FIG. 5, 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 with respect to the mounting base 475, and the outer peripheral surface of the nozzle 473 can be sterilized or cleaned by spraying sterilizing water or water from a water discharge portion 479 provided therein. 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, referring back to FIG.
First, a case where the user presses the sterilization switch 510 in the period T1 will be described. In this case, the user sterilizes the nozzle 473 by pressing the sterilization switch 510 before sitting on the toilet seat 200. Therefore, the user can sterilize the nozzle 473 in advance before using the sanitary washing device 100. Further, as described above with reference to FIG. 5, in the sterilization operation of the nozzle 473 of the present embodiment, the outer peripheral surface of the nozzle 473 can be sterilized by spraying sterilizing water from the water discharger 479 when the nozzle 473 advances and retreats. .

  At this time, when the toilet lid 300 is open, or when the toilet lid 300 is not provided as in a public sanitary washing device, for example, the user advances the nozzle 473 during the sterilization operation. The state of retreating can be visually observed. Therefore, the user can easily confirm that the sterilization operation of the nozzle 473 is reliably performed, and can use the sanitary washing device 100 with more peace of mind.

  In addition, before the user sits on the toilet seat 200, the control unit 405 causes the nozzle 473 to perform a sterilization operation and performs warm water preparation so that the water in the flow path 20 is discharged from the spout 474. Is not executed depending on the seating of the user. That is, when the user presses the sterilization switch 510, the warm water preparation is executed together with the sterilization operation. Therefore, the control unit 405 does not bother to execute the waste water operation based on the user's seating. According to this, the hot water preparation can be shortened, and the sanitary washing device 100 can be used immediately after the nozzle 473 is sterilized. Moreover, since water is not discharged unnecessarily, water can be saved.

  Next, a case where the user presses the sterilization switch 510 in the period T2 will be described. In this case, the user sterilizes the nozzle 473 by pressing the sterilization switch 510 before performing body washing while sitting on the toilet seat 200. Therefore, the user can disinfect the nozzle 473 in advance before performing body washing while sitting on the toilet seat 200. Thereby, the user can perform body washing using the nozzle 473 in a cleaner state.

  At this time, the user is seated on the toilet seat 200. That is, the seating detection sensor 404 detects a state where the user is seated on the toilet seat 200. Therefore, if the control unit 405 advances the nozzle 473 to the outside of the casing 400 to sterilize the outer peripheral surface, the user's excrement may be applied to the nozzle 473 or the user seated on the toilet seat 200 may be sterilized with water. There is. Therefore, when the user presses the sterilization switch 510 in the period T2, the control unit 405 sterilizes the portion of the spout 474 by discharging the sterilizing water from the spout 474 without moving the nozzle 473 back and forth. Alternatively, the control unit 405 sterilizes the outer peripheral surface by moving the nozzle 473 back and forth such that the nozzle 473 is not exposed to the outside of the casing 400. According to this, it is possible to prevent the user's excrement from being applied to the nozzle 473 or the user seated on the toilet seat 200 from being sterilized water. Further, when the nozzle 473 is advanced and retracted to such an extent that the nozzle 473 is not exposed to the outside of the casing 400, it is narrower than the case where the nozzle 473 is exposed to the outside of the casing 400, but only the portion of the water outlet 474 is sterilized. It is possible to sterilize a wider outer peripheral surface than the case of doing so.

Next, a case where the user presses the sterilization switch 510 in the period T3 and the period T4 will be described.
In this case, the user sterilizes the nozzle 473 by pressing the sterilization switch 510 after washing the body. Therefore, the user can sterilize the nozzle 473 for the user who uses the sanitary washing apparatus 100 next time, for example.

  Further, in the period T3, the user is seated on the toilet seat 200. That is, the seating detection sensor 404 detects a state where the user is seated on the toilet seat 200. Therefore, when the user presses the sterilization switch 510 in the period T3, the control unit 405 sterilizes the portion of the spout 474 by discharging the sterilizing water from the spout 474 without moving the nozzle 473 back and forth. Alternatively, the control unit 405 sterilizes the outer peripheral surface by moving the nozzle 473 back and forth such that the nozzle 473 is not exposed to the outside of the casing 400. According to this, it is possible to prevent the user's excrement from being applied to the nozzle 473 or the user seated on the toilet seat 200 from being sterilized water.

Here, the modification of operation | movement of the sanitary washing apparatus 100 concerning this embodiment is demonstrated.
When the user presses the sterilization switch 510 after performing body washing, that is, when the user presses the sterilization switch 510 at the timing of at least one of the period T3 and the period T4, the control unit 405 Only the sterilization operation of the nozzle 473 may be executed, and the hot water preparation need not be executed. Alternatively, when the user presses the sterilization switch 510 at least at the timings of the period T3 and the period T4, the control unit 405 does not stop until a predetermined time elapses after the user presses the sterilization switch 510. May execute only the sterilization operation of the nozzle 473 and not execute the warm water preparation. These are because it is unlikely that the user performs body washing again immediately after the user has performed body washing. In other words, it is not necessary to carry out warm water preparation immediately after washing the body.

  However, in the case where the user performs body washing again immediately after the user performs body washing, the control unit 405 causes the warm water to be ejected from the water discharge port 474 of the nozzle 473 after performing the draining water operation. Alternatively, when another user enters the room and sits on the toilet seat 200 immediately after the user leaves the toilet room, the control unit 405 detects the other user seated on the toilet seat 200. Then, the waste water operation is executed. Therefore, in any case, it is possible to prevent cold water from being sprayed on the user's “buttock” or the like.

Next, a specific example of the operation of the sanitary washing device according to the present embodiment will be described with reference to the drawings.
FIG. 6 is a timing chart showing a specific example of the operation of the sanitary washing device according to the present embodiment.

  When the user presses the sterilization switch 510, the control unit 405 opens the electromagnetic valve 431 and causes the electrolytic cell unit 450 to start generating sterilizing water (timing t11). The sterilizing water generated in the electrolytic cell unit 450 passes through the flow path 20 or the branch path 22 and is jetted from the water discharge port 474 of the nozzle 473 or the water discharge unit 479 of the nozzle cleaning chamber 478. Accordingly, the flow path 20 and the branch path 22 on the downstream side of the electrolytic cell unit 450, the portion of the water discharge port 474 of the nozzle 473, and the outer peripheral surface are sterilized with the sterilizing water. That is, the sterilization operation of the nozzle 473 is performed.

  When the control unit 405 ends the generation of the sterilizing water in the electrolytic cell unit 450, the control unit 405 causes the hot water heater 441 to start heating water (timing t12). At this time, since the electromagnetic valve 431 remains open, the water heated by the hot water heater 441 passes through the flow path 20 and is discharged from the water outlet 474 of the nozzle 473. Thereby, the flow path 20 downstream from the heat exchanger unit 440 is warmed. That is, warm water preparation is performed. In addition, at timing t12 to t13, the flow path 20 on the downstream side of the electrolytic cell unit 450 is replaced with water that does not contain a sterilizing component such as hypochlorous acid. Subsequently, the controller 405 causes the hot water heater 441 to finish heating the water and closes the electromagnetic valve 431 (timing t13).

  According to this specific example, when the sterilization operation of the nozzle 473 is performed, the hot water preparation is performed following the operation. Therefore, the nozzle 473 is sterilized with the sterilizing water generated by the electrolytic cell unit 450, and subsequently, the flow path 20 on the downstream side of the electrolytic cell unit 450 is replaced with water heated by the hot water heater 441. Thus, the user can use the sanitary washing device 100 immediately after the nozzle 473 is sterilized.

FIG. 7 is a timing chart showing another specific example of the operation of the sanitary washing device according to the present embodiment.
In this specific example, the hot water preparation is not performed after the sterilization operation of the nozzle 473, and the execution time of the sterilization operation of the nozzle 473 and the execution time of the hot water preparation overlap.

  When the user presses the sterilization switch 510, the control unit 405 opens the electromagnetic valve 431 and causes the electrolytic cell unit 450 to start generating sterilizing water (timing t21). The operation at this timing is the same as the operation at the timing t11 in the specific example described above with reference to FIG.

  Subsequently, the control unit 405 causes the hot water heater 441 to start heating the water before the electrolytic cell unit 450 ends the generation of the sterilizing water (timing t22). According to this, after the control unit 405 causes the hot water heater 441 to start heating water, sterilizing water is generated with the water heated by the hot water heater 441. That is, after the control unit 405 causes the hot water heater 441 to start heating water, sterilized water of hot water is generated in the electrolytic cell unit 450. Thereby, the density | concentration of the hypochlorous acid of the sterilization water produced | generated in the electrolytic cell unit 450 can be raised more. And the fall of the sterilization power of sterilization water can be suppressed, and the sterilization effect of sterilization water can be maintained longer. Therefore, the sterilization efficiency of the sterilizing water can be further increased.

  Subsequently, the control unit 405 causes the electrolytic cell unit 450 to end the generation of sterilizing water (timing t23). Thereafter, the controller 405 causes the hot water heater 441 to finish heating the water and closes the electromagnetic valve 431 (timing t24). At timings t23 to t24, the flow path 20 on the downstream side of the electrolytic cell unit 450 is replaced with warm water that does not contain a sterilizing component such as hypochlorous acid.

  According to this specific example, as described above, since sterilized water of hot water is generated in a part of the sterilization operation of the nozzle 473, the nozzle 473 can be sterilized more efficiently. Moreover, since warm water preparation is performed partially overlapping with the sterilization operation of the nozzle 473, the user can use the sanitary washing device 100 immediately after the sterilization of the nozzle 473.

FIG. 8 is a timing chart showing still another specific example of the operation of the sanitary washing device according to the present embodiment.
In this specific example, the execution time of warm water preparation is included in the execution time of the sterilization operation of the nozzle 473.

  When the user presses the sterilization switch 510, the control unit 405 opens the electromagnetic valve 431 and causes the electrolytic cell unit 450 to start generating sterilizing water (timing t31). The operation at this timing is the same as the operation at the timing t11 in the specific example described above with reference to FIG.

  Subsequently, the control unit 405 starts the operation of the hot water heater 441 before causing the electrolytic cell unit 450 to finish generating the sterilizing water (timing t32). Thereby, after the control part 405 makes the warm water heater 441 start heating water, the sterilization water of warm water is produced | generated in the electrolytic cell unit 450. FIG. This is as described above with reference to FIG. Subsequently, the control unit 405 ends the generation of the sterilizing water in the electrolytic cell unit 450 and the heating of the water in the hot water heater 441, and closes the electromagnetic valve 431 (timing t33).

  According to this example, the flow path 20 on the downstream side of the heat exchanger unit 440 is warmed by the sterilizing water with warm water (timing t32 to t33). Therefore, when the user presses the sterilization switch 510 in at least one of the period T1 and the period T2 (see FIG. 3), the hot water is kept until the user presses the butt cleaning switch after the sterilization switch 510 is pressed. The sterilizing water is maintained in a state of being filled in the flow path 20. Thereby, the flow path 20 on the downstream side of the electrolytic cell unit 450 is sterilized while being warmed by the hot water sterilizing water. That is, the sterilizing water is held in the flow path 20 on the downstream side of the electrolytic cell unit 450, and the sterilizing effect is maintained longer by the held sterilizing water. Therefore, the flow path 20 on the downstream side of the electrolytic cell unit 450 can be sterilized more efficiently.

  Further, in this specific example, when the user presses the buttocks washing switch or the like, the control unit 405 discharges the hot water sterilized water held in the flow path 20 on the downstream side of the electrolytic cell unit 450, and the hypoxia. Replace with warm water that does not contain sterilizing ingredients such as chloric acid. Thereby, when washing the “butt” of the user sitting on the toilet seat 200, it is possible to prevent the sterilizing water from being sprayed on the “butt” of the user.

  At this time, the time for discharging the hot water sterilized water retained in the flow path 20 and replacing it with hot water not containing the sterilizing component is shorter than the operation time for warm water preparation. In the case of warm water preparation, it is necessary to warm the flow path 20 or cool it down to a temperature suitable for body washing. On the other hand, when replacing with warm water containing no sterilizing component, This is because it is sufficient if there is sufficient time to pass hot water not included to the water outlet 474 of the nozzle 473. That is, in this specific example, the flow path 20 on the downstream side of the heat exchanger unit 440 is warmed by the hot water sterilizing water in the sterilization operation of the nozzle 473, so that it is sterilized when the butt washing switch or the like is pressed. It is sufficient to pass hot water that does not contain components to the water outlet 474 of the nozzle 473. Therefore, even when sterilizing water is retained in the flow path 20 on the downstream side of the electrolytic cell unit 450, the user can use the sanitary washing device 100 immediately after the nozzle 473 is sterilized.

FIG. 9 is a timing chart showing still another specific example of the operation of the sanitary washing device according to the present embodiment.
In this specific example, the execution time of the hot water preparation and the execution time of the sterilization operation of the nozzle 473 are the same.

  When the user presses the sterilization switch 510, the control unit 405 opens the electromagnetic valve 431 and causes the electrolytic cell unit 450 to start generating sterilizing water and to start heating the water in the hot water heater 441 (timing t41). As a result, hot water sterilizing water is generated in the electrolytic cell unit 450. Then, the sterilized water of hot water generated in the electrolytic cell unit 450 passes through the flow path 20 or the branch path 22 and is sprayed from the water discharge port 474 of the nozzle 473 or the water discharge unit 479 of the nozzle cleaning chamber 478. Thereby, the flow path 20 and the branch path 22 on the downstream side of the electrolytic cell unit 450, the portion of the water discharge port 474 of the nozzle 473, and the outer peripheral surface are sterilized with the sterilizing water of hot water. Subsequently, the control unit 405 ends the generation of the sterilizing water in the electrolytic cell unit 450 and the heating of the water in the hot water heater 441, and closes the electromagnetic valve 431 (timing t42).

  According to this specific example, when the user presses the sterilization switch 510 in at least one of the period T1 and the period T2 (see FIG. 3), the sterilizing water of the hot water is the case of the specific example described above with reference to FIG. It is maintained in a state where the flow path 20 is filled for a longer time. Therefore, the flow path 20 on the downstream side of the electrolytic cell unit 450 can be sterilized more efficiently. Also in this specific example, when the user presses the buttocks washing switch or the like, the control unit 405 discharges the sterilized water of the hot water held in the flow path 20 on the downstream side of the electrolytic cell unit 450, and hypochlorous acid. Replace with warm water that does not contain sterilizing ingredients. The user can use the sanitary washing device 100 immediately after the nozzle 473 is sterilized.

  As described above, according to the present embodiment, when the user presses the sterilization switch 510, the control unit 405 causes the nozzle 473 to perform the sterilization operation and prepares hot water. Therefore, the nozzle 473 is sterilized with sterilized water generated by the electrolytic cell unit 450, and the flow path 20 on the downstream side of the electrolytic cell unit 450 is replaced with water heated by the hot water heater 441. Thus, the user can use the sanitary washing device 100 immediately after the nozzle 473 is sterilized.

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 included in the sanitary washing device 100 and the like, the installation form of the sterilization switch 510, and the like are not limited to those illustrated, and 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.

  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, 431 solenoid valve, 440 heat exchanger unit, 441 hot water heater, 450 electrolyzer 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 discharge section, 500 operation section, 510 sterilization switch, 600 notification means, 800 toilet bowl, 801 bowl

Claims (6)

A sanitary washing device attached to a toilet,
A nozzle that has a water outlet, and jets water from the water outlet to wash the user's body;
A channel for guiding water supplied from a water supply source to the water outlet;
A sterilizing water generating means provided in the middle of the flow path and capable of generating sterilizing water;
A heating means provided upstream of the sterilizing water generating means and capable of heating water supplied from the water supply source;
A sterilization switch to which an instruction of sterilization operation for sterilizing the nozzle with the sterilizing water is input;
When the instruction is input to the sterilization switch, a control unit that executes the sterilization operation and executes control to supply water heated by the heating means into the flow path;
A sanitary washing device characterized by comprising: A branch path branched from the flow path and guiding water supplied from the water supply source to the surface of the nozzle;
Nozzle driving means for advancing and retracting the nozzle;
Further comprising
The sterilization operation includes an operation of sterilizing the surface of the nozzle by causing the sterilizing water to flow through the branch passage while the nozzle driving means advances and retracts the nozzle. Cleaning device.   The sanitary washing apparatus according to claim 1, wherein the control unit executes control to maintain the sterilizing water in a state in which the sterilizing water is filled in the flow path after the sterilization operation is performed.   The said control part performs control which discharges | emits the said sterilization water with which the said flow path was filled, if the instruction | indication which injects water from the said nozzle and wash | cleans the said body is input. The sanitary washing device according to 3. Further comprising seating detecting means for detecting the user's seating;
When an instruction for the sterilization operation is input to the sterilization switch while the seating detection unit detects the seating of the user, the control unit causes the sterilization operation to be performed without moving the nozzle back and forth. The sanitary washing device according to claim 2.   The sanitary washing apparatus according to any one of claims 1 to 5, further comprising notification means for notifying execution of the sterilization operation when an instruction for the sterilization operation is input to the sterilization switch.