JP2017125312A - Sanitary washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sanitary washing device capable of stably supplying hot water at proper temperature, in the case where hot water and water are supplied separately.SOLUTION: A sanitary washing device includes: a mixing valve for generating mixed water in which hot water is mixed with water; a nozzle for performing washing by jetting the mixed water toward a human body private part; a water side pressure regulating valve provided on the upstream side of the mixing valve and for regulating a pressure of the water supplied to the mixing valve; a hot water side pressure regulating valve provided on the upstream side of the mixing valve and for regulating a pressure of the hot water supplied to the mixing valve; a safety valve provided on the downstream side of the mixing valve; and a flow passage which is a flow passage of the mixed water and which includes a first branch part provided on the downstream side of the safety valve, a nozzle side water passage branched from the first branch part and for guiding the mixed water to the nozzle and a first water discharge passage branched from the first branch part and for discharging the mixed water to the outside.SELECTED DRAWING: Figure 3

Description

  Aspects of the invention generally relate to a sanitary washing apparatus.

  A sanitary washing apparatus installed in a toilet sprays washing water from a nozzle to a user's local area to wash the local area. At this time, if the temperature of the sprayed cleaning water is too low, the user may feel uncomfortable. Therefore, it is desirable for the sanitary washing device to inject warm water at an appropriate temperature during local washing.

  As a method for supplying hot water, in a facility where a large number of toilets are installed, for example, a hot water supply method called a central hot water supply method is adopted. In the central hot water supply system, water is heated by a heating device installed at one place to generate hot water. The generated hot water is guided to each toilet room by piping or the like. In addition to hot water, room temperature water is led to each toilet room by a pipe such as a water pipe. At this time, a mixing valve (hot water mixing valve) is used for the sanitary washing device. The mixing valve generates hot water (mixed water) by mixing hot water and room temperature water. Thereby, it becomes possible to inject warm water having an appropriate temperature in the local cleaning.

  For example, Patent Document 1 discloses a configuration of a sanitary washing device in which water and hot water are mixed by a thermo valve. In the sanitary washing device disclosed in Patent Document 1, a pressure reducing valve with a relief valve is provided on the downstream side of the thermo valve.

Utility Model Registration No. 2596157

  When a pressure reducing valve for adjusting the pressure is provided downstream of the thermo valve as in Patent Document 1, the pressure of hot water supplied to the thermo valve and the pressure of water supplied to the thermo valve are adjusted to a predetermined pressure. Can not do it. Thereby, the temperature of the mixed water supplied downstream from the thermo valve may change, and the temperature stability may decrease.

  The present invention has been made on the basis of recognition of such a problem, and an object of the present invention is to provide a sanitary washing device capable of stably supplying warm water at an appropriate temperature when hot water and water are separately supplied. And

  1st invention is provided in the upstream of the mixing valve which produces | generates the mixed water which mixed hot water and water, the nozzle which injects the said mixed water toward a human body part, and wash | cleans, and the said mixing valve A water-side pressure regulating valve that adjusts the pressure of the water supplied to the mixing valve; and a hot water-side pressure regulating valve that is provided upstream of the mixing valve and adjusts the pressure of the hot water supplied to the mixing valve; A safety valve provided on the downstream side of the mixing valve, a flow path of the mixed water, a first branch part provided on the downstream side of the safety valve, and a branch from the first branch part to the nozzle A sanitary washing apparatus comprising: a nozzle-side water channel that guides the mixed water; and a flow path that includes a first drainage channel that branches from the first branch portion and discharges the mixed water to the outside. is there.

According to this sanitary washing device, since the water-side pressure regulating valve 17 and the hot water-side pressure regulating valve 27 are provided upstream of the mixing valve 30, the hot water supply pressure and the water supply pressure in the mixing valve 30 deviate from the assumed pressures. Can be suppressed. Thereby, it can suppress that the temperature of mixed water deviates from preset temperature, and can improve temperature stability.
In addition, since a safety valve is provided on the downstream side of the mixing valve 30, for example, even if a malfunction occurs in the hot water side pressure regulating valve, the hot water can be prevented from flowing out from an unexpected part. Moreover, the member located downstream from the safety valve can be protected. Since the safety valve is provided downstream of the mixing valve and upstream of the first branch portion, the number of safety valves can be reduced to one and the number of members can be reduced.

  A second invention is the sanitary washing apparatus according to the first invention, further comprising an electrolyzer that is provided downstream of the safety valve and generates functional water from the mixed water.

  According to this sanitary washing device, the electrolytic cell is provided downstream of the hot water side pressure regulating valve, the water side pressure regulating valve, the mixing valve, and the safety valve. Accordingly, the functional water generated in the electrolytic cell is not diluted by the mixing valve, and the functional water can be efficiently supplied to the nozzle side.

  According to a third invention, in the first or second invention, the first drainage channel is provided on a toilet having a bowl, is located on the rear side of the toilet, and the mixed water is provided rearward of the toilet. On the other hand, the sanitary washing device is characterized in that it is discharged from the first drainage channel into the bowl.

  According to this sanitary washing device, when the mixed water is discharged from the first drainage channel to the bowl, the mixed water flows toward the rear of the toilet bowl. Thereby, it can prevent that the mixed water discharged | emitted from the 1st drainage channel falls on the sealing water in a bowl vigorously, and can suppress that water jumps to the outer side of a toilet bowl.

  In a fourth aspect based on the third aspect, the first drainage channel is provided at an end portion on the downstream side, and has a rectifying section that slopes downward toward the rear of the toilet and rectifies the mixed water. This is a sanitary washing device.

  According to this sanitary washing device, the flow direction of the mixed water discharged to the bowl is controlled by the rectifying section provided at the downstream end of the first drainage channel. Thereby, when mixed water is discharged | emitted by a bowl, it becomes easy to flow toward the back of a toilet bowl, and water splash can be suppressed more.

  According to a fifth invention, in any one of the first to fourth inventions, an electromagnetic valve that controls supply of the water to the mixing valve, and an electromagnetic valve that controls supply of the hot water to the mixing valve; A toilet seat heater that warms a toilet seat, and the power consumption of the sanitary washing device is lower than the sum of the maximum power consumption of the plurality of solenoid valves and the maximum power consumption of the toilet seat heater, The sanitary washing apparatus further includes a control unit that controls operations of the plurality of electromagnetic valves and operations of the toilet seat heater.

  According to this sanitary washing device, the control unit controls the operation of the plurality of electromagnetic valves, the operation of the toilet seat heater, and the like so that the power consumption of the sanitary washing device is reduced. Thereby, the function of the sanitary washing apparatus can be used comfortably even within limited power. Moreover, safety can be further enhanced by limiting power consumption.

  According to the aspect of the present invention, it is possible to provide a sanitary washing device capable of stably supplying warm water having an appropriate temperature when hot water and water are separately supplied.

It is a perspective view showing the toilet apparatus provided with the sanitary washing apparatus concerning embodiment of this invention. It is a top view which illustrates the inside of the sanitary washing apparatus concerning an embodiment. It is a block diagram which illustrates a water channel in a sanitary washing device concerning an embodiment. It is a figure which illustrates the electrolytic cell used for the functional water production | generation part of the sanitary washing apparatus which concerns on embodiment. It is sectional drawing which illustrates the mixing valve of the sanitary washing apparatus which concerns on embodiment. FIG. 6A and FIG. 6B are a plan view and a cross-sectional view illustrating a part of the sanitary washing device according to the embodiment. FIG. 7A to FIG. 7D are a perspective view and a cross-sectional view illustrating the drainage member according to the embodiment. It is a top view which illustrates the toilet seat of the sanitary washing apparatus concerning an embodiment. It is a circuit diagram which illustrates the sanitary washing apparatus concerning an embodiment. It is a flowchart which illustrates operation | movement of the control part of the sanitary washing apparatus which concerns on embodiment. It is a block diagram which illustrates the water channel of another sanitary washing apparatus concerning an embodiment. It is a circuit diagram which illustrates another sanitary washing apparatus concerning an embodiment. It is a flowchart which illustrates operation | movement of the control part of another sanitary washing apparatus which concerns on 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 perspective view showing a toilet apparatus provided with a sanitary washing device according to an embodiment of the present invention.
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.

  Here, in the specification of the present application, the upper side is “upward” when viewed from the user sitting on the toilet seat 200, and the lower side is “downward” when viewed from the user sitting on the toilet seat 200. Further, the front is viewed as “front” when viewed from the user sitting on the toilet seat 200 with his back to the opened toilet lid 300, and the rear is defined as “rear” when viewed from the user sitting on the toilet seat 200. Further, the right side as viewed from the user sitting on the toilet seat 200 is “right side”, and the left side as viewed from the user sitting on the toilet seat 200 is “left side”.

  The casing 400 incorporates a local cleaning function unit that realizes cleaning of a user who sits on the toilet seat 200, such as a “butt”. Further, for example, in the casing 400, an entrance detection sensor 402 (human body detection means) for detecting a user entering the toilet room, a human body detection sensor 403 (human body detection means) for detecting a user in front of the toilet seat 200, A seating detection sensor 404 (human body detection means) that detects the seating of the user on the toilet seat 200 is provided.

  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, the nozzle 473 (washing nozzle) is advanced into the bowl 801 of the toilet 800. be able to. In the sanitary washing device 100 shown in FIG. 1, the nozzle 473 has entered the bowl 801. The nozzle 473 is moved back and forth by any means such as a driving force by a motor.

  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 and warm water from the water outlet 474 provided in the front-end | tip part.

  Note that 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.

  Also, the casing 400 has a “warm air drying function” that heats the toilet seat 200 and blows warm air toward the “buttock” of the user sitting on the toilet seat 200, and a “deodorizing unit”. ”And“ indoor heating unit ”may be appropriately provided. For example, the deodorizing unit 481 includes a filter impregnated with electrolytic water or the like and a deodorizing fan 482 (see FIG. 2). Odor in the toilet room is sucked into the casing 400 by the operation of the deodorizing fan 482 and passes through the filter. Thereby, malodorous components are absorbed or decomposed by the electrolyzed water. At this time, an exhaust port from the deodorizing unit and an exhaust port from the indoor heating unit are appropriately provided on the side surface or the back surface of the casing 400. However, in the embodiment, the toilet seat heater, the hot air drying function, the deodorizing unit, the room temperature heating unit, and the like are not necessarily provided.

FIG. 2 is a plan view illustrating the inside of the sanitary washing device according to the embodiment.
FIG. 2 shows a local cleaning function unit built in the casing 400. The sanitary washing device 100 includes a water supply pipe 91, a hot water supply pipe 92, a water supply connection part 10, a hot water supply connection part 20, a water side valve unit 15, a hot water side valve unit 25, a mixing valve 30, and a safety valve part 40. A switching unit 50 (switching valve unit), an auto clean unit 60 (functional water generating unit 61), a nozzle unit 470, a control unit 480, and a deodorizing unit 481. These are arranged on the case plate 401 of the casing 400. The case plate 401 has a plate shape or a plate shape extending in a substantially horizontal direction. The case plate 401 may have a portion inclined with respect to the horizontal direction for drainage or the like as appropriate. In FIG. 2, some elements in the casing 400 are omitted for convenience.

  The control unit 480 is a control circuit (microcomputer) including an IC element. The control unit 480 controls operations of electromagnetic valves and motors included in the water side valve unit 15, the hot water side valve unit 25, the nozzle unit 470, the deodorizing unit 481 (deodorizing fan 482), and the like. Further, the control unit 480 controls operations of the human body detection means, the toilet seat heater, the auto clean unit 60, and the like.

FIG. 3 is a block diagram illustrating a water channel in the sanitary washing device according to the embodiment.
The water supply pipe 91 is connected to a water supply source (not shown) such as a water supply or a water storage tank via the water side piping section 14. The water side piping unit 14 includes a strainer 11, a check valve 12 provided on the downstream side of the strainer 11, and a water stop valve 13 provided on the downstream side of the check valve 12. The downstream end of the water supply pipe 91 is connected to the water supply connection unit 10. Thereby, the water supply pipe 91 supplies water to the sanitary washing device 100. A water side valve unit 15 is provided on the downstream side of the water supply connector 10. The water side valve unit 15 includes a water supply electromagnetic valve 16 and a water side pressure regulating valve 17 on the downstream side thereof. A mixing valve 30 is provided on the downstream side of the water side valve unit 15. By opening and closing the water supply electromagnetic valve 16, it is possible to switch between a state in which water is supplied to the mixing valve 30 and a state in which the supply of water is stopped. The water side pressure regulating valve 17 includes, for example, a valve (piston) provided in a cylinder and biased by a spring or the like. The opening degree of the valve changes in accordance with the pressure of water flowing into the cylinder and the urging force of a spring or the like. Thereby, the water side pressure regulation valve 17 adjusts the pressure of the water supplied to the mixing valve 30.

  On the other hand, the hot water supply pipe 92 is connected to a hot water supply source (not shown) such as a heating device via the hot water side piping section 24. The hot water side piping section 24 includes a strainer 21, a check valve 22 provided on the downstream side of the strainer 21, and a stop cock 23 provided on the downstream side of the check valve 22. The downstream end of the hot water supply pipe 92 is connected to the hot water supply connection portion 20. Thereby, the hot water supply connection part 20 supplies the heated hot water to the sanitary washing device 100. A hot water side valve unit 25 is provided on the downstream side of the hot water supply connection portion 20. The hot water side valve unit 25 includes a hot water supply electromagnetic valve 26 and a hot water side pressure regulating valve 27 on the downstream side thereof. A mixing valve 30 is provided on the downstream side of the hot water side valve unit 25. By opening and closing the hot water supply electromagnetic valve 26, it is possible to switch between a state in which hot water is supplied to the mixing valve 30 and a state in which the supply of hot water is stopped. The hot water side pressure regulating valve 27 includes, for example, a valve (piston) provided in a cylinder and biased by a spring or the like. The opening degree of the valve changes according to the pressure of hot water flowing into the cylinder and the urging force of a spring or the like. Thereby, the hot water side pressure regulating valve 27 adjusts the pressure of the hot water supplied to the mixing valve 30.

  The mixing valve 30 mixes the supplied hot water and water to generate mixed water. Thereby, warm water (mixed water) at an appropriate temperature can be supplied to the downstream side, and can be ejected from the nozzle 473. In the present specification, “warm water” refers to mixed water in which water supplied from a water supply pipe and hot water supplied from a hot water supply pipe are mixed at an arbitrary ratio. Unless otherwise specified, the temperature of the hot water is not limited.

  In this example, the mixing valve 30 is provided with temperature detection means. Thereby, the mixing valve 30 can adjust the temperature of warm water automatically. For example, the mixing valve 30 is a wax-type temperature control valve that uses a wax element as temperature detection means. In the embodiment, the mixing valve 30 is not limited to the wax-type temperature control valve, and any hot water / water mixing valve can be used. For example, bimetal or an arbitrary temperature sensor can be used as the temperature detecting means.

  A safety valve unit 40 is provided on the downstream side of the mixing valve 30. The safety valve unit 40 includes a thermistor 41 and a safety valve 42. The safety valve 42 includes, for example, a valve (piston) provided in a cylinder and biased by a spring or the like. When the pressure of the hot water flowing into the cylinder becomes higher than a predetermined value, the valve opens, and the hot water is guided to the case plate 401 side as indicated by an arrow A4 shown in FIGS. Accordingly, the hot water is drained from the opening provided in front of the case plate 401 to the outside (for example, the bowl 801).

  The hot water flow path 110 included in the sanitary washing device 100 includes a first branch part 51 provided on the downstream side of the mixing valve 30 and the safety valve part 40, a nozzle side water path 55, and a first drainage path 81. The nozzle-side water channel 55 and the first drainage channel 81 are respectively provided on the downstream side of the first branch part 51 and branch from the first branch part 51.

  The first branching unit 51 is provided with a switching unit 50 (switching valve unit). The switching unit 50 includes a solenoid valve 150. Thereby, the 1st branch part 51 switches the flow path of the warm water supplied from the mixing valve 30. That is, the state where the warm water flows into the nozzle-side water channel 55 and the state where the warm water flows into the first drainage channel 81 are switched by ON / OFF of the electromagnetic valve 150. Hot water does not have to flow through both the nozzle-side water channel 55 and the first waste water channel 81 at the same time.

  A negative pressure breaking device 153 is provided in the first drainage channel 81. The warm water that has flowed into the first drainage channel 81 is guided to the case plate 401 side as indicated by an arrow A5 shown in FIGS. 2 and 3, and is externally provided from an opening provided in front of the case plate 401 (for example, the bowl 801). Thrown away.

  For example, when the user uses the sanitary washing device 100, the water side valve unit 15 and the hot water side valve unit 25 are opened according to the output of the seating detection sensor 404. At this time, the flow path of hot water or hot water and the hot water remaining in the flow path may be cold. Moreover, the mixing valve 30 can adjust the temperature of the hot water by flowing a predetermined amount or more of water and hot water through the mixing valve 30. For this reason, immediately after the user starts using, the temperature of the hot water supplied from the mixing valve 30 may be low for the user. Therefore, the sanitary washing device 100 discards a predetermined amount of hot water to the first drainage channel 81 after detecting the seating of the human body. For example, in the mixing valve 30, the warm water is caused to flow into the first drainage channel 81 until the warm water reaches an appropriate temperature.

  Thereafter, for example, when the user performs the local cleaning, the operation unit 500 is operated, whereby the flow path is switched by the electromagnetic valve 150. Thereby, the hot water flows into the nozzle side water channel 55. The nozzle-side water channel 55 includes a second branch portion 52, a water conduit 70, and a second water drainage channel 82. The water conduit 70 and the second drainage channel 82 are respectively provided on the downstream side of the second branch portion 52 and branch from the second branch portion 52.

  The second drainage channel 82 guides the warm water to the case plate 401 side, and discards the warm water from the opening provided in front of the case plate 401 to the outside (for example, the bowl 801) as indicated by an arrow A6. The water conduit 70 guides hot water to the nozzle portion 470 (nozzle 473).

The nozzle unit 470 includes a flow rate switching valve 471, a flow path switching valve 472, and a nozzle 473. The flow rate switching valve 471 and the flow path switching valve 472 can adjust the water flow in the nozzle 473 and switch the water discharge port 474 for discharging water.
As described above, warm water (mixed water) having an appropriate temperature can be ejected from the nozzle 473.

  An auto clean unit 60 and a negative pressure breaking device 154 are provided on the water conduit 70 on the downstream side of the second branch portion 52. The auto clean unit 60 includes a functional water generator 61 that generates functional water from hot water. The functional water is, for example, sterilized water having a sterilizing function. For example, the functional water generator 61 includes an electrolytic cell, and generates functional water containing hypochlorous acid by electrolyzing tap water (hot water) flowing inside the electrolytic cell. The auto clean unit 60 supplies functional water to the nozzle part 470 after the sanitary washing device 100 is used. Thereby, the outer peripheral surface (body) of the nozzle 473 can be sterilized.

  “Functional water” refers to a solution containing more disinfecting components such as hypochlorous acid than tap water. Moreover, the functional water produced | generated in the functional water production | generation part 61 may be the solution containing metal ions, such as silver ion and copper ion, the solution containing electrolytic chlorine, ozone, etc. The functional water may be acidic water or alkaline water. In the embodiment, the sterilizing water generating unit is not limited to the electrolytic cell. For example, the sterilized water may be generated by dissolving a sterilizing agent or a sterilizing solution in water.

Drawing 4 is a figure which illustrates the electrolytic cell used for the functional water generating part of the sanitary washing device concerning an embodiment.
As shown in FIG. 4, the electrolytic cell 450 includes an anode plate 451 and a cathode plate 452. When the electrolytic cell 450 is energized and a voltage is applied between the anode plate 451 and the cathode plate 452, tap water (mixed water) flowing inside the electrolytic cell 450 can be electrolyzed. 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 450 changes to a liquid containing hypochlorous acid. Hypochlorous acid functions as a sterilizing component, and a solution containing the hypochlorous acid, that is, sterilized water, can efficiently remove or decompose dirt due to ammonia or the like.

FIG. 5 is a cross-sectional view illustrating a mixing valve of the sanitary washing device according to the embodiment.
In this example, the mixing valve 30 includes a spring 32, a wax element 33, and a spring 34. The wax element 33 receives a biasing force from the spring 32 and the spring 34.

  Water flows into the mixing valve 30 from the water side valve unit 15 as indicated by arrow A1, and hot water flows from the hot water side valve unit 25 as indicated by arrow A2. Hot water and water are mixed in the mixing valve 30. The mixed water (hot water) thus mixed is supplied downstream as indicated by an arrow A3. Here, the volume of the wax in the wax element 33 changes according to the temperature of the hot water. For example, as the temperature of hot water increases, the volume of wax expands. Then, the length of the wax element 33 (piston position) changes, and the opening degree of the hot water inlet and the opening degree of the water inlet change. As a result, the flow rate of hot water flowing into the mixing valve 30 and the flow rate of water change. Accordingly, the temperature of the hot water changes. In this way, the hot water flow rate and the water flow rate are automatically adjusted until the temperature of the hot water reaches a predetermined temperature (set temperature). The set temperature is determined by adjusting the thermal response characteristics of the wax element 33, the elastic force of the spring, and the like.

  The opening degree of the hot water and the water inlet of the mixing valve 30 also varies depending on the pressure of the hot water supplied to the mixing valve 30 (hot water supply pressure) and the pressure of the water supplied to the mixing valve 30 (water supply pressure). That is, the flow rate of hot water and the flow rate of water change. For this reason, if at least one of the hot water supply pressure and the water supply pressure is different from the pressure assumed when the set temperature is determined, the flow rate of hot water and the flow rate of water deviate from the assumed flow rate. As a result, the temperature of the hot water may deviate from the set temperature.

  On the other hand, in the embodiment, the water side pressure regulating valve 17 and the hot water side pressure regulating valve 27 are provided on the upstream side of the mixing valve 30. For this reason, each of the hot water supply pressure and the water supply pressure in the mixing valve 30 can be prevented from deviating from the assumed pressure. Thereby, it can suppress that the temperature of warm water deviates from preset temperature, and can improve temperature stability. Accordingly, it is possible to stably supply hot water having an appropriate temperature.

  For example, it is conceivable that the mixing valve 30 or a member downstream of the mixing valve 30 receives a higher water pressure when a malfunction such as a failure occurs in either the water side pressure regulating valve 17 or the hot water side pressure regulating valve 27. For example, when a problem occurs in the hot water side pressure regulating valve 27, hot water may flow out from a portion receiving a high water pressure on the downstream side of the mixing valve 30.

  On the other hand, in the embodiment, a safety valve 42 is provided on the downstream side of the mixing valve 30. Thereby, for example, even if a malfunction occurs in the hot water side pressure regulating valve 27, it is possible to prevent the hot water from flowing out from an unexpected part. In addition, a member located downstream of the safety valve 42 can be protected.

  For example, the structure which arrange | positions the safety valve 42 upstream from the mixing valve 30 can also be considered. However, in this case, two safety valves, a water side and a hot water side, are required. In addition, when the safety valve 42 is provided on the downstream side of the first branch portion 51, a plurality of safety valves may be required depending on the number of branched flow paths. On the other hand, in the embodiment, the safety valve 42 is provided downstream of the mixing valve 30 and upstream of the first branch portion 51. Thereby, the number of safety valves can be set to one and the number of members can be suppressed.

  In addition, as described with reference to FIG. 3, in the embodiment, the electrolytic cell 450 (functional water generating unit 61) is provided on the downstream side of the water side pressure regulating valve 17, the hot water side pressure regulating valve 27, the mixing valve 30, and the safety valve 42. Yes. On the other hand, for example, a configuration in which the electrolytic cell 450 is provided on the upstream side of the mixing valve 30 is also conceivable. However, in this case, the functional water generated by the electrolytic cell 450 is diluted with the mixing of hot water and water in the mixing valve. On the other hand, in the embodiment, the functional water generated in the electrolytic cell 450 is not diluted in the mixing valve 30, and the functional water can be efficiently supplied to the nozzle side. Moreover, since the pressure, flow rate, temperature, and the like of the mixed water in the electrolytic cell 450 can be controlled to a predetermined state by the pressure regulating valves 17 and 27 and the mixing valve 30, the stability of the generation (concentration, etc.) of functional water is improved. Can be improved.

FIG. 6A and FIG. 6B are a plan view and a cross-sectional view illustrating a part of the sanitary washing device according to the embodiment.
As shown in FIG. 6A, the toilet bowl 800 includes a concave bowl 801 that is recessed downward. The bowl 801 is connected to a drain pipe (not shown), and allows waste or the like to flow through the drain pipe. The case plate 401 (casing 400) is provided on the toilet bowl 800 and is located on the rear side of the toilet bowl 800. The first drainage channel 81, the first branch portion 51, the nozzle-side channel 55 and the like are provided on the case plate 401.

  FIG. 6B is a cross-sectional view taken along line S1-S2 shown in FIG. The downstream end of the first drainage channel 81 is located on the rear side in the bowl 801. The 1st drainage channel 81 has the drainage member 180 provided in the edge part of the downstream. The first drainage channel 81 includes a tubular member 190 that connects the first branch portion 51 and the drainage member 180.

  The drainage member 180 is a bent tubular member. That is, the drainage member 180 includes a first portion 181 that extends in the first direction D1 and a second portion 182 that continues from the first portion 181 and extends in the second direction D2. An opening 401e is provided at the front end of the case plate 401, and the second portion 182 of the drainage member 180 is inserted into the opening 401e. The tip of the second portion 182 is concealed by a front wall portion 401f that forms a part of the opening 401e.

  On the outer periphery of the drainage member 180, for example, a hook-shaped engagement portion 180a is provided. The engaging portion 180 a engages with the case plate 401. Thereby, the position and orientation (posture) of the drainage member 180 with respect to the case plate 401 are fixed.

  The first portion 181 forms a downward slope from the rear to the front. The second portion 182 forms a downward slope from the front to the rear. Thereby, the hot water is discharged from the first drainage channel 81 to the bowl 801 toward the rear of the toilet bowl 800.

  Here, as shown in FIG. 6B, a sealed water 801 w is provided inside the bowl 801. That is, a predetermined amount of water (sealed water) is stored in the bowl 801 when the toilet is not in use. Thereby, odor etc. can be prevented from flowing backward from the drain pipe through which excrement etc. flow. At this time, when the hot water falls from the first drainage channel 81 (drainage member 180) toward the sealed water 801w, the water splashes. Depending on the flow rate and momentum of the drainage, the water may splash to the outside of the toilet bowl 800.

  In contrast, in the embodiment, as described above, the hot water flows toward the rear of the toilet bowl 800 when being discharged from the first drainage channel 81 to the bowl 801. Thereby, it is possible to prevent the hot water discharged from the first drainage channel 81 from falling down on the sealed water in the bowl 801 vigorously, and to suppress the water from jumping to the outside of the toilet bowl 800.

FIG. 7A to FIG. 7D are a perspective view and a cross-sectional view illustrating the drainage member according to the embodiment.
FIG. 7A is a perspective view illustrating the drainage member 180. FIG.7 (b) is sectional drawing in the S3-S4 line | wire shown to Fig.7 (a). FIG. 7C is a cross-sectional view taken along line S5-S6 shown in FIG. FIG. 7D is a cross-sectional view taken along line S7-S8 shown in FIG.

  As shown in FIG. 7B and FIG. 7C, a partition portion 182 a is provided on the upstream side of the second portion 182. In this example, two partition portions 182a are provided, and each partition portion 182a is a plate extending in a direction perpendicular to the first direction D1 and the second direction D2. The plates are arranged parallel to each other. By such a partition part 182a, the flow path of the hot water is divided into a plurality of flow paths that are substantially parallel to each other. As shown in FIG. 7B and FIG. 7D, on the downstream side of the second portion 182, a rib 182b (convex portion) extending in the second direction D2 is provided on the inner peripheral surface of the pipe. It has been. In this example, four ribs 182b are provided.

  By providing the partition portion 182a and the rib 182b, the second portion 182 functions as a rectifying section that regulates the flow of hot water. For example, like the drainage member 180, if the pipe is bent, the direction in which the hot water flows is likely to be disturbed in the bent portion. For this reason, the direction of the hot water discharged from the drainage member 180 may be disturbed, making it difficult for the hot water to flow toward the rear of the toilet bowl 800. On the other hand, in the embodiment, a plurality of narrow flow paths extending in the second direction D2 are provided on the upstream side of the second portion 182 by the partition portion 182a. Since the flow path is narrow, the direction in which the hot water flows is aligned with the second direction D2. The divided hot water is collected by the rib 182b on the downstream side of the second portion 182.

  As described above, the second portion 182 (rectifying section) can adjust the flow of hot water. That is, it can suppress that the direction through which the hot water discharged from the second portion 182 flows is deviated from the second direction D2. Thereby, when warm water is discharged | emitted by the bowl 801, it becomes easy to flow toward the back of the toilet bowl 800, and can suppress water splash more. For example, even if the diameter of the drainage member 180 is small, warm water can be discharged while securing a flow rate.

  Note that the configuration of the rectification section (the number, arrangement, and shape of the partition portions 182a and ribs 182b) is not limited to this example, and can be changed as appropriate. For example, the partition part 182a may be net-like.

FIG. 8 is a plan view illustrating the toilet seat of the sanitary washing device according to the embodiment.
As already described, the toilet seat 200 may have the toilet seat heater 201. For example, as illustrated in FIG. 8, the toilet seat heater 201 includes a coil 202 and a conductor portion 203. The coil 202 and the conductor part 203 are provided inside the toilet seat 200.

  For example, the coil 202 is provided so as to go around the toilet seat 200. The conductor part 203 is provided so as to cover the coil 202 between the coil 202 and the seating surface. Thereby, the temperature of the toilet seat 200 can be raised by the principle of induction heating. That is, when a high frequency current is passed through the coil 202, a magnetic field that changes at a high frequency is generated. As a result, an eddy current is generated by a change in the magnetic field passing through the conductor portion 203, and the conductor portion 203 generates heat. Energization of coil 202 (operation of toilet seat heater 201) is controlled by control unit 480.

FIG. 9 is a circuit diagram illustrating the sanitary washing device according to the embodiment.
As illustrated in FIG. 9, each of the toilet seat heater 201, the electromagnetic valve 160, the deodorizing fan 482, and the control unit 480 is electrically connected to the power source 170.

  The toilet seat heater 201 includes a toilet seat thermistor 204 that detects the temperature of the toilet seat 200. The toilet seat heater and the toilet seat thermistor 204 are electrically connected to the control unit 480, respectively. The control unit 480 can adjust the temperature of the toilet seat 200 by controlling the power supplied to the toilet seat heater 201. For example, the control unit 480 switches the toilet seat heater 201 on and off.

  Deodorizing fan 482 is electrically connected to control unit 480. The control unit 480 can control the rotation speed of the deodorizing fan 482 by controlling the electric power supplied to the deodorizing fan 482.

  The solenoid valve 160 is one of the water supply solenoid valve 16, the hot water solenoid valve 26, and the solenoid valve 150 described with reference to FIG. In FIG. 9, only one solenoid valve 160 is shown for convenience, but in the embodiment, each of the plurality of solenoid valves (water supply solenoid valve 16, hot water supply solenoid valve 26, and solenoid valve 150) is the solenoid valve 160. As shown, the power source 170 and the control unit 480 are connected. The control unit 480 controls each operation (opening / closing) of the plurality of solenoid valves.

FIG. 10 is a flowchart illustrating the operation of the control unit of the sanitary washing device according to the embodiment. FIG. 10 illustrates an example of the operation of the control unit 480 in the configuration described with reference to FIG.
The control unit 480 can acquire information on the usage status of the toilet seat heater 201 and the deodorizing fan 482, and can calculate power consumption in the entire sanitary washing device 100 (step S101).

  For example, when the power consumption of the entire sanitary washing device 100 is higher than a predetermined power (rated power) (step S102: YES), the control unit 480 uses the power consumption of at least one of the toilet seat heater 201 and the deodorizing fan 482. A low value is set (step S103). Thereby, the power consumption in the sanitary washing apparatus 100 is made lower than the predetermined power.

  When at least one of the plurality of solenoid valves (water supply solenoid valve 16, hot water supply solenoid valve 26, and solenoid valve 150) is operated, the power consumption in the sanitary washing device 100 becomes higher than a predetermined power (step S104: YES). The control unit 480 sets power consumption in at least one of the toilet seat heater 201 and the deodorizing fan 482 to be low. Alternatively, the control unit 480 turns off at least one of the toilet seat heater 201 and the deodorizing fan 482 (step S105). Thereafter, at least one of the plurality of solenoid valves is driven (step S106). When the driving of the electromagnetic valve is finished, the control unit 480 returns the electric power in the toilet seat heater 201 and the deodorizing fan 482 to the state in step S104 (step S108). For example, the toilet seat heater 201 or the deodorizing fan 482 is turned on again.

As described above, the control unit 480 reduces the power consumption of at least one of the toilet seat heater 201 and the deodorizing fan 482 when operating the plurality of solenoid valves. Thereby, the power consumption in the sanitary washing apparatus 100 can be made lower than predetermined power.
In addition, when the power consumption in the sanitary washing apparatus 100 does not become higher than the predetermined power (step S104: NO), the solenoid valve may be driven without changing the power consumption of the toilet seat heater 201 and the deodorizing fan 482. (Step S107).

  As described above, the control unit 480 controls the operations of the plurality of solenoid valves, the toilet seat heater, and the deodorizing fan so that the power consumption of the sanitary washing device 100 is lower than the predetermined power. For example, the predetermined power (watt: W) is equal to or less than the sum of the maximum power consumption in the plurality of solenoid valves, the maximum power consumption in the toilet seat heater 201, and the maximum power consumption in the deodorizing fan 482. When the deodorizing fan 482 is not provided, the predetermined power is, for example, not more than the sum of the maximum power consumption in the plurality of solenoid valves and the maximum power consumption in the toilet seat heater 201. The maximum power consumption is the maximum value of power consumption under proper use conditions determined by the product (sanitary washing apparatus) standards.

  In facilities such as hotels where a large number of toilets are installed, there is a case where power that can be used in one sanitary washing device is limited. Even in such a case, the control unit 480 controls the operation of the plurality of solenoid valves, the operation of the toilet seat heater, and the like so that the power consumption of the sanitary washing device 100 is reduced. Thereby, the function of the sanitary washing apparatus 100 can be comfortably used even within limited power.

FIG. 11 is a block diagram illustrating a water channel of another sanitary washing device according to the embodiment.
The sanitary washing apparatus 100a shown in FIG. 11 is provided with a heat exchanger unit 130 instead of the mixing valve 30 as compared with the sanitary washing apparatus 100 described above. The heat exchanger unit 130 is provided between the water side valve unit 15 and the first branch portion 51. The heat exchanger unit 130 has a hot water heater 131. The hot water heater 131 heats the supplied water. The sanitary washing device 100 a does not have the hot water supply pipe 92, the hot water supply connection unit 20, and the hot water side valve unit 25. Except for the above, the configuration of the sanitary washing device 100a is the same as the configuration of the sanitary washing device 100, and thus detailed description thereof is omitted.

FIG. 12 is a circuit diagram illustrating another sanitary washing device according to the embodiment.
As shown in FIG. 12, in the sanitary washing device 100a, the hot water heater 131 is electrically connected to each of the power source 170 and the control unit 480. The hot water heater 131 is provided with a hot water thermistor 132 that detects the temperature of the heated water. The controller 480 can control the power supplied to the hot water heater 131 to adjust the temperature of the supplied water. For example, the control unit 480 switches the hot water heater 131 on and off. Other than the above, it is the same as the description related to FIG.

FIG. 13 is a flowchart illustrating the operation of the control unit of another sanitary washing device according to the embodiment. FIG. 13 illustrates an example of the operation of the control unit 480 in the configuration described with reference to FIG.
When the user operates the operation unit 500 to start local cleaning, the control unit 480 determines the power consumption of the sanitary cleaning device 100a from the usage statuses of the toilet seat heater 201, the hot water heater 131, and the deodorizing fan 482. Calculate (step S201).

  For example, when the power consumption in the sanitary washing device 100a is higher than a predetermined power (rated power) (step S202: YES), the controller 480 detects the temperature detected by the hot water thermistor 132 and the toilet seat thermistor 204. The temperature is read (step S203).

  The control unit 480 calculates a value (difference ΔT1) obtained by subtracting the temperature detected by the toilet seat thermistor 204 from the set temperature of the toilet seat 200. In addition, the control unit 480 calculates a value (difference ΔT2) obtained by subtracting the temperature detected by the hot water thermistor 132 from the set temperature of water (step S204). Note that the set temperatures of the toilet seat 200 and water can be appropriately set by the user operating the operation unit 500 or the like.

  When the difference ΔT1 is larger than the difference ΔT2 (step S205: YES), the control unit 480 turns off the hot water heater 131 or sets the power consumption in the hot water heater 131 low by pattern control (step S206).

  When the difference ΔT1 is equal to or smaller than the difference ΔT2 (step S205: NO), the control unit 480 turns off the toilet seat heater 201 or sets power consumption in the toilet seat heater 201 to be low by pattern control (step S207).

  After step S206 or S207, when the power consumption in the sanitary washing device 100a is higher than the predetermined power (step S208: YES), the control unit 480 turns off the deodorizing fan 482 or consumes the deodorizing fan 482. Is set low to reduce the rotation speed of the fan (step S209).

  As described above, for example, the control unit 480 controls the deodorizing fan 482, the toilet seat heater 201, the hot water heater 131, and the plurality of solenoid valves with a predetermined power or less. Thereby, the function of the sanitary washing device 100a can be comfortably used even within limited power.

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, dimensions, material, arrangement, installation form, and the like of each element included in the mixing valve, nozzle, pressure regulating valve, safety valve, flow path, 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.

  DESCRIPTION OF SYMBOLS 10 Water supply connection part, 11 Strainer, 12 Check valve, 13 Water stop valve, 14 Water side piping part, 15 Water side valve unit, 16 Water supply solenoid valve, 17 Water side pressure regulation valve, 20 Hot water supply connection part, 21 Strainer, 22 Check valve, 23 stop cock, 24 hot water side piping section, 25 hot water side valve unit, 26 hot water solenoid valve, 27 hot water side pressure regulating valve, 30 mixing valve, 32 spring, 33 wax element, 34 spring, 40 safety valve section, 41 thermistor, 42 safety valve, 50 switching section, 51 first branch section, 52 second branch section, 55 nozzle-side water channel, 60 auto-clean unit, 61 functional water generator, 70 water conduit, 81 first water drain channel, 82 first Double drainage channel, 91 water supply pipe, 92 hot water supply pipe, 100, 100a sanitary washing device, 110 flow path, 130 heat exchange Unit, 131 hot water heater, 132 hot water thermistor, 150 solenoid valve, 153, 154 negative pressure destruction device, 160 solenoid valve, 170 power supply, 180 drainage member, 180a engaging portion, 181 first portion, 182 second portion, 182a Partition part, 182b rib, 190 tubular member, 200 toilet seat, 201 toilet seat heater, 202 coil, 203 conductor part, 204 toilet seat thermistor, 300 toilet lid, 400 casing, 401 case plate, 401e opening, 401f front wall part, 402 entrance Detection sensor, 403 Human body detection sensor, 404 Seating detection sensor, 450 Electrolytic tank, 451 Anode plate, 452 Cathode plate, 470 Nozzle part, 471 Flow rate switching valve, 472 Flow path switching valve, 473 Nozzle, 474 Water outlet, 480 Control part 481 deodorizing unit, 482 deodorizing fan, 500 operation unit, 800 toilet, 801 bowl, 801w seal water

Claims (5)

A mixing valve that mixes hot water and water to produce mixed water;
A nozzle that performs cleaning by spraying the mixed water toward a human body part; and
A water-side pressure regulating valve provided on the upstream side of the mixing valve for adjusting the pressure of the water supplied to the mixing valve;
A hot water side pressure regulating valve provided on the upstream side of the mixing valve for adjusting the pressure of the hot water supplied to the mixing valve;
A safety valve provided downstream of the mixing valve;
A flow path of the mixed water,
A first branch provided downstream of the safety valve;
A nozzle-side water channel that branches from the first branch part and guides the mixed water to the nozzle;
A first drainage channel that branches off from the first branch part and discharges the mixed water to the outside;
A flow path including:
A sanitary washing device characterized by comprising:   The sanitary washing apparatus according to claim 1, further comprising an electrolyzer provided on a downstream side of the safety valve and generating functional water from the mixed water. The first drainage channel is provided on a toilet having a bowl, and is located on the rear side of the toilet,
The sanitary washing device according to claim 1 or 2, wherein the mixed water is discharged from the first drainage channel to the bowl toward the rear of the toilet.   The sanitary washing according to claim 3, wherein the first drainage channel is provided at an end portion on the downstream side, and has a rectifying section that inclines downward toward the rear of the toilet and rectifies the mixed water. apparatus. A plurality of solenoid valves including a solenoid valve that controls the supply of water to the mixing valve; and a solenoid valve that controls the supply of hot water to the mixing valve;
A toilet seat heater that warms the toilet seat;
The operation of the plurality of solenoid valves and the operation of the toilet seat heater are controlled so that the power consumption of the sanitary washing device is lower than the sum of the maximum power consumption of the plurality of solenoid valves and the maximum power consumption of the toilet seat heater. A control unit,
The sanitary washing device according to any one of claims 1 to 4, further comprising: