JP6111884B2 - Sanitary washing device and toilet device - Google Patents

Description

  The present invention relates to a sanitary washing device and a toilet device.

  Residential sanitary washing devices and non-residential (public) sanitary washing devices are required to save energy, reduce power consumption, and save water.

  In public sites, a plurality of sanitary washing devices are often installed for one electrical wiring or one breaker. Therefore, even if multiple sanitary washing devices are used at the same time, the power consumption per unit time (power consumption) is instantaneous in the public field so that the power consumption does not exceed the allowable power consumption of electrical wiring and breakers. A sanitary washing apparatus having a hot water storage type heat exchanger that is lower than the power consumption of the type heat exchanger is often used.

  However, the amount of heat released during standby of the hot water storage type heat exchanger is larger than the amount of heat released during standby of the instantaneous heat exchanger. Therefore, the total power consumption of the sanitary washing apparatus including the hot water storage type heat exchanger is higher than the total power consumption of the sanitary cleaning apparatus including the instantaneous heat exchanger. There is room for improvement in terms of saving energy or reducing power consumption.

  Consider a case where a public sanitary washing apparatus is equipped with an instantaneous heat exchanger in order to save energy or reduce power consumption. When multiple sanitary washing devices with conventional instantaneous heat exchangers are installed on the public site, even if multiple sanitary washing devices are used at the same time, the total power consumption is acceptable for the electrical wiring or breaker. It must be set not to exceed the power. In some cases, there has been a problem that a large cost is required for facility construction, such as changing the electrical wiring or breaker to one having a large allowable power.

  In the sanitary washing apparatus equipped with the instantaneous heat exchanger as described above, there is a problem that the cold water remaining without being heated in the flow path at the start of washing is jetted to the part to be washed and the user feels uncomfortable. It was. Various inventions have been made to prevent such problems (see, for example, Patent Documents 1 and 2).

  Patent Document 1 discloses that when washing a human body part, warm washing water is jetted from the beginning by draining cooling water from a washing nozzle in advance when it is detected that a user uses a toilet. The technique which can be started immediately after the instruction | indication of local cleaning is disclosed.

  Patent Document 2 discloses a technique in which a preheating operation and a pre-cleaning supply operation are performed before a cleaning operation in a sanitary cleaning device using an instantaneous heat exchanger. According to this technique, the wash water heated moderately at the start of the washing operation is ejected to the portion to be washed, and the cold water is prevented from being ejected. As a result, discomfort to the human body at the start of cleaning is prevented.

Japanese Patent No. 3200922 Japanese Patent No. 4354679

  When using a sanitary washing device equipped with a momentary heat exchanger in a public field within a range that does not exceed the allowable power consumption of the breaker, in order to heat the washing water to a temperature where the user does not feel uncomfortable, It is necessary to reduce the amount of washing water. However, the time required to replace the cold water staying in the product flow path with warm water that does not cause discomfort to the user under conditions of low water supply temperature and environmental temperature typified by winter is The smaller the amount of flowing water, the longer. Therefore, there is a problem for the user that the user waits until the actual cleaning starts after pressing the cleaning start button, or the cleaning starts at a temperature lower than the set temperature, and the user feels cold and uncomfortable.

  In addition, in the sanitary washing device, in order to provide a feeling of washing according to various preferences of the user, there are a plurality of water discharge holes, and the water landing ranges from each water discharge hole to the human body local area or different flow rates are washed. Can squirt water. In such a sanitary washing apparatus equipped with a nozzle having a plurality of water discharge holes, when the local cleaning is started or when the water discharge hole from which the washing water is jetted is switched, the cold water staying in the other channel is discharged. Therefore, there is a problem of giving the user a cool feeling.

  The present invention has been made in view of the circumstances as described above, and even when the water discharge holes are switched in a nozzle having a plurality of water discharge holes, cold water is discharged to give the user a cool feeling. An object of the present invention is to provide a sanitary washing device and a toilet device that can quickly start local washing without waiting even after a user operates a washing start button.

  The sanitary washing device according to the present invention is provided with a nozzle having a first water discharge hole and a second water discharge hole, a flow path for supplying cleaning water to the nozzle, the flow path, and the cleaning water at a predetermined temperature. A sanitary washing apparatus comprising a heat exchanger that raises the temperature to a temperature and a control unit that controls the supply of cleaning water to the first water discharge hole and the second water discharge hole. When water discharge is started from one of the first water discharge hole and the second water discharge hole, water is discharged from the other water discharge hole for a predetermined time. With such a configuration, since the cleaning operation can be started even before all the water in the nozzle channel is replaced with a temperature suitable for local human body cleaning, the user waits after operating the cleaning start button. Even when the water discharge hole for ejecting the washing water is switched to the other water discharge hole, the cold water staying in the flow path leading to the water discharge hole is discharged, so the user feels cold. There is nothing. Therefore, the sanitary washing device can be used comfortably.

  In the sanitary washing device according to the present invention, preferably, when the controller starts water discharge from the first water discharge hole, water discharge is performed for a predetermined time from the first water discharge hole at a flow rate equal to or lower than a set flow rate. In addition, the water is discharged at a flow rate that does not reach the user from the second water discharge hole. With such a configuration, the amount of cleaning water ejected from the first water spouting hole that cleans the human body part is guided to the second water spouting hole during the control (hereinafter referred to as soft start) that gradually increases after the ejection starts. The temperature of the washing water staying in the flow path can be raised. Therefore, even if it is a case where a water discharge hole is switched to another water discharge hole, it can prevent giving a cool feeling to a user.

  In the sanitary washing device according to the present invention, preferably, the control unit sums a flow rate of the cleaning water supplied to the first water discharge hole and a flow rate of the cleaning water supplied to the second water discharge hole. To be constant. With such a configuration, there is no fluctuation in the total flow rate flowing in the sanitary washing apparatus during the soft start control, and the temperature of the washing water heated by the instantaneous heat exchanger can be stabilized.

  In the sanitary washing device according to the present invention, preferably, the control unit sums a flow rate of the cleaning water supplied to the first water discharge hole and a flow rate of the cleaning water supplied to the second water discharge hole. Is substantially the same as the set flow rate. With such a configuration, even when shifting from soft start control to local cleaning, there is no fluctuation in the total flow rate flowing in the sanitary cleaning device, and the temperature of the cleaning water heated by the instantaneous heat exchanger is set. It can be stabilized.

Further, in the sanitary washing device according to the present invention, it is preferable that the control unit, when switching the water discharge to the second jetting port from the first jetting port, stops water discharge from the first water discharge port Then, the position of the nozzle is finely adjusted, and then water discharge from the second water discharge hole is started. Thereby, it can prevent giving a user the uncomfortable feeling by the change of a landing position.

  A toilet device according to the present invention has the above-described sanitary washing device and a toilet. With such a configuration, when water is discharged from the other water discharge holes at the time of soft start of the specific water discharge holes, cold water is discharged from both water discharge holes. Therefore, even if the user later switches the water discharge hole to another water discharge hole, the user does not feel cold. Therefore, the toilet device can be used comfortably.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is a case where a water discharge hole is switched, it can prevent cold water being discharged and giving a user a cool feeling.

The schematic perspective view which shows the toilet apparatus provided with the sanitary washing apparatus which concerns on one Embodiment of this invention. The figure which shows the principal part structural example of the sanitary washing apparatus which concerns on one Embodiment of this invention. The perspective view which shows the stator and rotor which comprise the flow volume switching valve and flow-path switching valve which concern on one Embodiment of this invention. The figure which shows an example of the stator which concerns on one Embodiment of this invention. The figure which shows an example of the rotor which concerns on one Embodiment of this invention. The flowchart which shows the control logic of the control part which concerns on one Embodiment of this invention. The flowchart which shows the control logic of the control part which concerns on one Embodiment of this invention. The flowchart which shows the control logic of the control part which concerns on one Embodiment of this invention. The flowchart which shows the control logic of the control part which concerns on one Embodiment of this invention. The time chart which concerns on the specific example which performed the control logic of the control part which concerns on one Embodiment of this invention. The figure for demonstrating the water discharge in the sanitary washing apparatus which concerns on one Embodiment of this invention. The figure for demonstrating the water discharge in the sanitary washing apparatus which concerns on one Embodiment of this invention. The figure for demonstrating the water discharge in the sanitary washing apparatus which concerns on one Embodiment of this invention. The figure for demonstrating the water discharge in the sanitary washing apparatus which concerns on one Embodiment of this invention. The figure for demonstrating the water discharge in the sanitary washing apparatus which concerns on one Embodiment of this invention. The figure for demonstrating the water discharge in the sanitary washing apparatus which concerns on one Embodiment of this invention.

  A sanitary washing device according to the present invention includes a nozzle having a first water discharge hole and a second water discharge hole, a flow path for supplying cleaning water to the nozzle, and a flow path for raising the wash water to a predetermined temperature. A sanitary washing apparatus comprising: a heat exchanger for heating; and a control unit that controls supply of cleaning water to the first water discharge hole and the second water discharge hole, wherein the control unit is a first water discharge hole When water discharge is started from one of the water discharge holes and the second water discharge hole, water is discharged from the other water discharge hole for a predetermined time. Thereby, even if it is a case where a water discharge hole is switched, cold water is discharged and it prevents giving a user a cool feeling. Embodiments of the present invention will be described below.

[Overview of sanitary washing equipment]
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. FIG. 2 is a diagram illustrating a configuration example of a main part of a sanitary washing device according to an embodiment of the present invention. In addition, in FIG. 2, the principal part structure of a waterway system and an electrical system is represented collectively.

  A toilet apparatus 1 shown in FIG. 1 includes a Western-style seat toilet (hereinafter simply referred to as “toilet bowl”) 800 and a sanitary washing apparatus 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 for realizing washing of a local part of a user sitting on the toilet seat 200 and the like. Further, for example, the casing 400 is provided with a human body detection sensor 403 that detects the human body of the user and a seating detection sensor 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.

  The tip of the nozzle 473 is provided with a plurality of water discharge holes 474a, 474b, 474c (hereinafter simply referred to as “water discharge holes 474” when referring to any one or two or more). The nozzle 473 can inject water from the water discharge hole 474 and wash the local area of the user sitting on the toilet seat 200.

  More specifically, as shown in FIG. 2, the sanitary washing device 100 according to the present embodiment supplies the wash water supplied from the water supply source 10 such as a water supply or a water storage tank to the water discharge hole 474 of the nozzle 473. It has the flow path 20 which leads as much as possible. 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.

  A heat exchanger unit 440 that raises the temperature of the cleaning water to a predetermined temperature is provided downstream of the electromagnetic valve 431. The heat exchanger unit 440 has a heater (not shown), for example, a sheathed heater or a ceramic, whose heating amount changes according to the supplied electric power and heats the wash water that has passed through the electromagnetic valve 431 to make warm water at a predetermined temperature. Has a heater and the like. The heat exchanger unit 440 is instantaneous heating means for heating the cleaning water that is cold water that has passed through the electromagnetic valve 431.

  An electrolytic cell unit (electrolytic cell) 450 capable of generating sterilizing water is provided downstream of the heat exchanger unit 440. The nozzle 473 and the flow path 20 on the downstream side of the electrolytic cell unit 450 are sterilized by the sterilizing water generated in the electrolytic cell unit 450.

  Downstream of the electrolytic cell unit 450, a flow rate switching valve 471 that adjusts the water flow (flow rate), a flow path switching valve 472 that opens, closes, and switches water supply to the nozzle 473 and the nozzle cleaning chamber (nozzle cleaning means) 478. , Is provided. 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.

  Note that the flow path 20 is branched into a first water discharge flow path 21, a second water discharge flow path 22, and a third water discharge flow path 23 downstream of the flow path switching valve 472. The first water discharge channel 21, the second water discharge channel 22, and the third water discharge channel 23 communicate with the first water discharge hole 474a, the second water discharge hole 474b, and the third water discharge hole 474c, respectively. The flow rate switching valve 471 and the flow path switching valve 472 control the supply of cleaning water to the water discharge holes 474a, 474b, 474c based on a command from the control unit 405. Details of the control contents will be described later.

  As described above, the nozzle 473 can wash the local area of the user sitting on the toilet seat 200 by spraying water. A first water discharge hole 474a, a second water discharge hole 474b, and a third water discharge hole 474c are provided at the tip of the nozzle 473. In the present embodiment, the first water discharge hole 474a is a bidet cleaning water discharge hole for performing local washing of women, and the second water discharge hole 474b and the third water discharge hole 474c are respectively a water landing range or a flow velocity of the human body local area. A description will be given as a water discharge hole for anal washing that ejects different washing water. Note that the number of water discharge holes may be two, or four or more. Moreover, the use of each water discharge hole is not restricted to said case.

  Further, the nozzle 473 can receive a driving force from the nozzle motor 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.

  A sterilizing water spouting nozzle for discharging sterilizing water generated in the electrolytic cell unit 450 from the flow path switching valve 472 to the surface of the bowl 801 of the toilet bowl 800 may be provided separately from the nozzle 473. In this case, a sterilizing water spouting nozzle (not shown) is provided in the flow path 20 on the downstream side of the electrolytic cell unit 450. The sanitary washing apparatus 100 is generally installed on the toilet bowl 800 and used. Therefore, when a sterilizing water spouting nozzle for discharging sterilizing water is provided on the surface of the bowl 801, the sanitary washing device 100 is also effective as a device for sterilizing bacteria present on the surface of the bowl 801 of the toilet bowl 800. Can be used.

  The control unit 405 is supplied with electric power from the power supply circuit 401 and detects an entrance detection sensor 402 that detects the user entering the toilet room, a human body detection sensor 403 that detects a user in front of the toilet seat 200, and the toilet seat 200. Based on a signal from a seating detection sensor 404 that detects the user's seating on the operation unit 500 or the like, an electromagnetic valve 431, a heat exchanger unit 440, an electrolytic cell unit 450, a flow rate switching valve 471, and a flow path switching valve The operation of 472 and the nozzle motor 476 can be controlled. In particular, by controlling the operation of the flow path switching valve 472, the supply of cleaning water to each water discharge hole 474a, 474b, 474c is controlled.

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

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

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

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

  Also, the casing 400 has various mechanisms such as a “warm air drying function”, a “deodorizing unit”, and an “indoor heating unit” for blowing hot air toward a local area of a user sitting on the toilet seat 200 and drying. It 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.

[Configuration of flow rate switching valve and flow path switching valve]
FIG. 3 is a perspective view showing a stator and a rotor constituting a flow rate switching valve and a flow path switching valve according to an embodiment of the present invention.

  The stator 600 and the rotor 700 shown in FIG. 3 are components that perform the valve functions of the flow rate switching valve 471 and the flow path switching valve 472 of FIG. In FIG. 3, the components other than the stator 600 and the rotor 700 among the components of the flow rate switching valve 471 and the flow path switching valve 472 are not shown.

  Such a stator 600 and the rotor 700 are provided on the flow path 20, and particularly on the downstream side of the stator 600, the flow path 20 includes the first water discharge flow path 21, the second water discharge flow path 22, and the third water discharge flow path 23. And branch to the bypass channel. Hereinafter, the starter 600 and the rotor 700 will be described in detail in this order.

[About the stator]
FIG. 4 is a diagram illustrating an example of a stator according to an embodiment of the present invention. FIG. 4A shows the surface of the stator 600. FIG. 4B shows the back surface of the stator 600.

  As shown in FIG. 3, the stator 600 is a disk-shaped member having a predetermined thickness. As shown in FIGS. 3 and 4, the stator 600 has six through holes 601, 602, 603 a, 603 b, 603 c, and 604 formed in a plane perpendicular to the water flow direction.

  The through hole 601 is a through hole that communicates with the first water discharge passage 21, and a stepped recess 611 is formed in the circumferential direction on the surface side of the through hole 601. In the following description, the through hole 601 is also referred to as a first water discharge channel hole 601.

  The through hole 602 is a through hole that communicates with the second water discharge passage 22, and a stepped recess 612 is formed in the circumferential direction on the surface side of the through hole 602. The recess 612 includes a recess 612a that is formed up to the same radial position as a later-described through hole 603b and is recessed toward the axis X side. In the following description, the through hole 602 is also referred to as a second water discharge channel hole 602.

  The through holes 603 a, 603 b, and 603 c are through holes that communicate with the third water discharge channel 23. A stepped recess 613 is formed in the circumferential direction on the surface side of the through hole 603a. The through-hole 603b is a small through-hole having a substantially quadrangular prism shape formed at a radial position closer to the rotation axis X than the through-hole 603a. The through-hole 603c is a substantially cylindrical small through-hole formed at a radial position closer to the rotation axis X than the through-hole 603b. In the following description, when referring to any one of the through holes 603a, 603b, 603c, it is also referred to as a third water discharge channel hole 603.

The through-hole 604 is a through-hole that communicates with a nozzle cleaning chamber 478 that cleans a nozzle that performs human body local cleaning from the outside, and is formed in a substantially cylindrical shape. The through hole 604 is formed at the same diameter position as the through holes 601 , 602 , and 603 a . In the following description, the through hole 604 is also referred to as a bypass channel hole 604.

  As described above, the stator 600 has the first water discharge channel hole 601, the second water discharge channel hole 602, the third water discharge channel hole 603, and the bypass channel hole 604. Next, the rotor 700 will be described.

[About rotor]
FIG. 5 is a diagram illustrating an example of a rotor according to an embodiment of the present invention. FIG. 5 shows the surface of the rotor 700. Note that the rear surface of the rotor 700 is not shown because it is the same as the front surface.

  As shown in FIG. 3, the rotor 700 is a disk-like member having a predetermined thickness and the same diameter as the stator 600. As shown in FIGS. 3 and 5, the rotor 700 has three through holes 701, 702, 703 and a notch 704 formed in a plane perpendicular to the water flow direction.

  The rotor 700 is overlapped with the stator 600 and rotates on the stator 600 about the rotation axis X. Specifically, it is driven to rotate by a drive motor (not shown) that operates based on a command from the control unit 405 (see FIG. 2).

  The through hole 701 is a small through hole having a substantially quadrangular prism shape formed at a radial position corresponding to the through hole 603 b of the stator 600. The through hole 701 can communicate with the recess 612a or the through hole 603b when the rotor 700 is rotated.

  The through hole 702 is a small through hole having a substantially quadrangular prism shape formed at a symmetrical position of the through hole 701 across the rotation axis X. This through hole 702 can also communicate with the recess 612a or the through hole 603b when the rotor 700 is rotated.

  The through hole 703 is a small substantially cylindrical through hole provided at a radial position corresponding to the through hole 603 c of the stator 600. The through hole 703 can communicate with the through hole 603c when the rotor 700 is rotated.

  The notch 704 is a notch formed on the periphery of the rotor 700. The notch 704 can communicate with the recesses 611, 612, 613 or the bypass channel hole 604 when the rotor 700 is rotated.

  As shown above, the rotor 700 is formed with through holes 701, 702, 703 and a notch 704.

  The areas of the holes and the like formed in the stator 600 and the rotor 700 are set according to the required water amounts of the water discharge channels 21, 22, and 23, and are not equally divided. Furthermore, the flow rate and the water flow to the water discharge channels 21, 22, and 23 are adjusted by rotating the through holes 701, 702, 703 and the notch 704 of the rotor 700, and the flow channel holes 601 to 604 of the stator 600. This is done by changing the cross-sectional area of the flow path.

  In particular, in the present embodiment, the flow rate and water flow to the water discharge channels 21, 22, and 23 are adjusted by the step-shaped depressions 611, 612, and 613. That is, since each hollow part 611, 612, 613 is comprised by the step shape of 4 steps | paragraphs, the flow volume adjustment which concerns on this embodiment can be set in four steps. Moreover, the change of the amount of water discharge in the arbitrary setting angles of the rotor 700 can be decreased by these hollow parts 611, 612, and 613. In addition, the structure of each hollow part 611, 612, 613 is not limited to a staircase shape, It may be a slope shape where a flow-path cross-sectional area changes gently. Thereby, the amount of water discharge which can be adjusted is not limited to four steps.

[Control logic of control unit]
6A, 6B, 6C, and 6D are flowcharts illustrating control logic of a control unit according to an embodiment of the present invention. The control unit 405 executes the control logic shown below. In the following description, each component in FIG. 2 will be referred to as appropriate.

  First, in step S1, the control unit 405 determines whether or not a seating detection signal from the seating detection sensor 404 has been received (S1). When the seating detection signal is not received (NO in S1), the process of step S1 is repeated until the seating detection signal is received.

  When the seating detection signal is received (YES in S1), the control unit 405 proceeds to step S2, starts the warm water preparation control shown in FIG. 6B, and stays in the flow path 20 of the sanitary washing device 100 when not in use. Chilled water is discharged. 6B, the solenoid valve 431, the heat exchanger unit 440, the flow rate switching valve 471, and the flow path switching valve 472 are controlled, and water discharge is started from all the water discharge holes 474a, 474b, 474c of the nozzle 473. At the same time, the temperature of the cleaning water in the flow path 20 is increased (S21).

  Then, it progresses to step S22 and the control part 405 determines whether it reached | attained predetermined | prescribed warm water temperature (for example, 30 degree | times which is a setting value) (S22). If the predetermined hot water temperature has not been reached (NO in S22), the process proceeds to step S23, and the control unit 405 determines whether or not a predetermined hot water preparation time (for example, a set value of 12 seconds) has elapsed. (S23). If the predetermined hot water preparation time has not elapsed (NO in S23), the process of step S22 and the process of step S23 are repeated.

  When the predetermined hot water temperature is reached (YES in S22), or when the predetermined hot water preparation time has elapsed (YES in S23), the control unit 405 proceeds to step S24, and the electromagnetic valve 431, the heat exchanger unit 440, The flow rate switching valve 471 and the flow path switching valve 472 are controlled to stop the water discharge from all the water discharge holes 474a, 474b, 474c started in step S21 and the temperature rise of the fluid in the flow path 20 (S24).

  Returning to FIG. 6A and proceeding to step S3, the control unit 405 determines whether or not a seating detection signal from the seating detection sensor 404 has been received, and determines whether or not an instruction to start cleaning is given by the operation unit 500 ( S3). If the seating detection signal is not received, or if there is no instruction to start cleaning (NO in S5), the process of step S3 is performed until the seating detection signal is received and there is an instruction to start cleaning, that is, until the cleaning start condition is satisfied. repeat.

  When the cleaning start condition is satisfied (YES in S3), the flow path 20 of the sanitary cleaning device 100 that has decreased from the reception of the seating detection signal from the seating detection sensor 404 until the cleaning start instruction is given from the operation unit 500 is performed. In order to discharge the cold water staying inside, the control unit 405 performs the hot water preparation control process (S4) again.

  After the hot water preparation control process (S4) ends, the control unit 405 proceeds to step S5, and advances the nozzle 473 to the specified advance position (S5). In step S5, the nozzle motor 476 that operates based on a command from the control unit 405 advances the nozzle 473 into the bowl 801 as shown in FIG.

  In step S6, the control unit 405 performs a soft start control process illustrated in FIG. 6C. In step S31 of FIG. 6C, the control unit 405 controls the electromagnetic valve 431, the heat exchanger unit 440, the flow rate switching valve 471, and the flow path switching valve 472, and among the water discharge holes 474a, 474b, and 474c of the nozzle 473. Water is discharged from a specific water discharge hole (for example, water discharge hole 474c) at an instantaneous flow rate equal to or less than a predetermined instantaneous flow rate, and water is discharged from other water discharge holes (for example, water discharge hole 474b) at a small instantaneous flow rate (S31).

  Subsequently, the process proceeds to step S32, and the control unit 405 determines whether or not a predetermined soft start time (for example, a set value of 1 second) has elapsed (S32). If the predetermined soft start time has not elapsed (NO in S32), the process of step S32 is repeated.

  That is, in step S32, when the control unit 405 starts water discharge from a specific water discharge hole among the water discharge holes 474a, 474b, and 474c, a predetermined amount until the flow rate from the specific water discharge hole becomes a predetermined instantaneous flow rate. During the time, a small amount of water is discharged from other water discharge holes. Thus, by discharging water from other water discharge holes at the time of soft start of a specific water discharge hole, cold water is discharged from both water discharge holes. Therefore, even if the user later switches the water discharge hole to another water discharge hole, the user does not feel cold. Therefore, the sanitary washing device 100 can be used comfortably.

In addition, although this embodiment demonstrated the case where the sanitary washing apparatus 100 had the three water discharge holes 474a, 474b, 474c, it is not restricted to this case. For example, when the sanitary washing device 100 has two water discharge holes, in step S32, when water discharge is started from any one specific water discharge hole ( first water discharge hole), the other water discharge hole ( second discharge hole) The water is discharged from the water discharge holes) for a predetermined time.

  Further, it is preferable to discharge water from a specific water discharge hole at a flow rate equal to or less than a predetermined instantaneous flow rate for the predetermined time, and to discharge water from the other water discharge holes at a small flow rate that does not reach the user. . In this way, by performing water discharge that is not felt by the user from other water discharge holes during the soft start, the temperature of the cleaning water staying in the flow path leading to the other water discharge holes can be increased. Thereby, even if it is a case where a water discharge hole is switched to another water discharge hole, it can prevent giving a cool feeling to a user.

  Furthermore, it is preferable that the sum total of the instantaneous flow rate of the cleaning water supplied to the specific water discharge hole and the instantaneous flow rate of the cleaning water supplied to the other water discharge holes is constant. Thereby, the temperature of the wash water heated by the heat exchanger unit 440 can be stabilized because the instantaneous flow rate passing through the heat exchanger unit 440 becomes constant.

  Further, the sum of the instantaneous flow rate of the cleaning water supplied to the specific water discharge hole and the instantaneous flow rate of the cleaning water supplied to the other water discharge holes is substantially the same as the set flow rate of the local cleaning (main cleaning). With such a configuration, even when shifting from soft start control to local cleaning, the instantaneous flow rate passing through the heat exchanger unit 440 becomes constant, so that the temperature of the cleaning water heated by the heat exchanger unit 440 can be reduced. It can be stabilized.

  When the predetermined soft start time has elapsed (YES in S32), the control unit 405 proceeds to step S33, controls the flow rate switching valve 471 and the flow path switching valve 472, and stops water discharge from other water discharge holes ( S33).

  Thereafter, the process proceeds to step S34, and the control unit 405 controls the flow rate switching valve 471 and the flow path switching valve 472 to increase the instantaneous flow rate from the specific water discharge hole by a predetermined flow rate. (S34). At this time, it is preferable that the flow rate to be increased is substantially the same as the flow rate change amount of the cleaning water spent for the water pressure adjustment in one stage in the water flow adjustment during the main cleaning.

  Then, it progresses to step S35 and the control part 405 determines whether the instantaneous flow volume from a specific water discharge hole reached | attained the setting flow volume (S35). Here, the set flow rate indicates a flow rate corresponding to the washing water flow set by the user or a flow rate corresponding to the standard water flow set in advance by the sanitary washing apparatus. When the instantaneous flow rate from the specific water discharge hole has not reached the set flow rate (NO in S35), the processing from step S34 is repeated.

  When the instantaneous flow rate from the specific water discharge hole reaches the set flow rate in step S35 (YES in S35), the control unit 405 ends the soft start control, and discharges water at a constant set instantaneous flow rate from only the specific water discharge hole. Continue (S7).

  Thereafter, the process proceeds to step S8, and the control unit 405 determines whether or not there is an instruction to switch the water discharge hole by the operation unit 500 (S8). When there is no water discharge hole switching instruction (NO in S8), the control unit 405 determines whether or not there is an instruction to end cleaning by the operation unit 500 (S10). If there is no instruction to end cleaning (NO in S10), the processes in steps S8 and S10 are repeated until there is an instruction to end cleaning.

  When there is an instruction to switch the water discharge hole in step S8 (YES in S8), the control unit 405 proceeds to step S9, that is, step S41 in FIG. 6D, and finely adjusts the position of the nozzle 473 (S41). In step S41, for example, when switching from the water discharge hole 474c to the water discharge hole 474b in the sanitary washing device 100 shown in FIG. 1, the nozzle 473 is slightly retracted so that the water discharge hole 474b is disposed at the position of the water discharge hole 474c. In step S41, the rotor 700 (see FIG. 3) is rotated to switch the water discharge from the water discharge hole 474b.

  Thereafter, the process proceeds to step S42, where the solenoid valve 431, the heat exchanger unit 440, the flow rate switching valve 471, and the flow path switching valve 472 are controlled, and the water discharge holes after switching among the water discharge holes 474a, 474b, 474c of the nozzle 473 ( For example, water is discharged from the water discharge hole 474b) at an instantaneous flow rate equal to or less than a predetermined instantaneous flow rate, and water is discharged from other water discharge holes (for example, the water discharge hole 474c before switching) at a small instantaneous flow rate. (S42). The control after step S42 is a soft start in the water discharge hole after switching, and the processing of steps S43 to S46 is the same as steps S32 to S35 of FIG.

  In addition, as shown in the above steps S41 and S42, when switching the water discharge hole, after stopping the water discharge from the water discharge hole before switching, finely adjust the position of the nozzle 473, and then from the water discharge hole after switching The water discharge is started. That is, the nozzle 473 is not operated so as to be temporarily retracted out of the bowl 801. Thereby, it can prevent giving a user the uncomfortable feeling by the change of a landing position.

  After the soft start process at the water discharge hole after switching is completed, the process proceeds to step S11, and the control unit 405 discharges water from the water discharge hole after switching only at a specified instantaneous flow rate (S11).

  When the operation unit 500 gives an instruction to end cleaning (S10), the control unit 405 proceeds to step S12, controls the electromagnetic valve 431, stops water discharge, and stops the temperature rise of the cleaning water in the flow path 20. (S12).

  Then, it progresses to step S13 and the control part 405 retracts the nozzle 473 to a regular standby position (S13). In step S <b> 13, the nozzle motor 476 that operates based on a command from the control unit 405 moves the nozzle 473 back from the bowl 801.

  Through the processing described above, the control unit 405 according to the present embodiment controls switching of water discharge holes and water discharge from the water discharge holes.

[Concrete example]
Subsequently, a specific example of the processing of FIGS. 6A to 6D will be described. FIG. 7 is a time chart according to a specific example in which the control logic of the control unit according to the embodiment of the present invention is executed. In FIG. 7, the horizontal axis represents time, and the vertical axis represents water temperature. Moreover, FIGS. 8-13 is a figure for demonstrating the water discharge in the sanitary washing apparatus which concerns on one Embodiment of this invention.

  In this specific example, the operation of first discharging water from the water discharge hole 474c and then switching the water discharge hole from the water discharge hole 474c to the water discharge hole 474b will be described.

  At time T0, the control unit 405 receives a seating detection signal from the seating detection sensor (YES in S1), and starts warm water preparation control (S2).

  FIG. 8A shows the positional relationship between the stator 600 and the rotor 700 at time T0. In FIG. 8A, the stator 600 is indicated by a dotted line, and the rotor 700 is indicated by a solid line (the same applies to FIGS. 9 to 13).

  As shown in FIG. 8A, the notch 704 of the rotor 700 communicates with a recess 611 that communicates with the first water discharge channel hole 601. The through hole 702 of the rotor 700 communicates with a recess 612 a that communicates with the second water discharge channel hole 602. The through hole 703 of the rotor 700 communicates with a through hole 603c that is one of the third water discharge channel holes 603. Thus, the stator 600 and the rotor 700 are in communication with each other for the water discharge passage holes 601, 602, and 603.

  Therefore, as shown in FIG.8 (b), water discharge is performed from all the water discharge holes 474a, 474b, 474c. In addition, as shown in FIG. 7, the temperature of the wash water discharged from the water discharge holes 474a, 474b and 474c rises to 30 degrees between times T0 and T1. Moreover, in the specific example shown in FIG. 7, while receiving the washing | cleaning start instruction from the operation part 500 during the time T0 to T1, it is assumed that reception of the seating detection signal is continuing (YES in S3, S4), Cleaning has started.

  After that, at time T1 when a predetermined warm water preparation time has elapsed, the control unit 405 advances the nozzle 473 to the specified advance position (S5), and then performs the process of step S6, here, soft start of the water discharge hole 474c. Start (S6).

  FIG. 9A shows the positional relationship between the stator 600 and the rotor 700 at time T1. As shown in FIG. 9A, the through hole 701 of the rotor 700 communicates with a recess 612 a that communicates with the second water discharge channel hole 602. The notch 704 of the rotor 700 communicates with a recess 613 that communicates with a through hole 603a that is one of the third water discharge channel holes 603. Accordingly, the stator 600 and the rotor 700 are communicated with each other in the second water discharge channel hole 602 and the third water discharge channel water discharge hole 603.

  Therefore, as shown in FIG. 9B, water is discharged from the two water discharge holes, the second water discharge hole 474b and the third water discharge hole 474c. In addition, the water discharge flow rate from the 3rd water discharge hole 474c is larger than the water discharge flow rate from the 2nd water discharge hole 474b, and especially the water discharge flow rate from the 2nd water discharge hole 474b is a flow volume of a grade which does not land on a user. Therefore, the user can use the sanitary washing device 100 without being aware of the water discharged from the second water discharge hole 474b. Moreover, as shown in FIG. 7, the temperature of the wash water discharged from the second water discharge hole 474b and the third water discharge hole 474c during the time T1 to T2 rises to 35 degrees. When the predetermined time has elapsed (S32), the control unit 405 rotates the rotor 700. Accordingly, the rotor 700 is maintained while the communication between the notch 704 of the rotor 700 shown in FIG. 9A and the recess 613 leading to the through hole 603a which is one of the third water discharge channel holes 603 is maintained. Communication between the through hole 701 and the recess 612a leading to the second water discharge passage hole 602 is released, and water discharge from the second water discharge hole 474b is stopped.

  The control unit 405 further rotates the rotor 700 to thereby form a notch 704 in the rotor 700 shown in FIG. 9A and a hollow portion that communicates with a through hole 603a that is one of the third water discharge channel holes 603. The cross-sectional area of the flow path formed by communication with 613 changes, and the instantaneous flow rate of the cleaning water discharged from the third water discharge hole 474c increases (S34).

  Thereafter, at time T2, the control unit 405 ends the soft start process (YES in S35), and starts the process of step S7, here, main cleaning by the water discharge hole 474c (S7).

  FIG. 10A shows the positional relationship between the stator 600 and the rotor 700 at time T2. As shown in FIG. 10A, the notch 704 of the rotor 700 communicates with a recess 613 that communicates with a through hole 603 a that is one of the third water discharge channel holes 603. That is, the stator 600 and the rotor 700 communicate with each other only in the third water discharge channel hole 603.

  Therefore, as shown in FIG.10 (b), water discharge is performed only in the 3rd water discharge hole 474c. In addition, as shown in FIG. 7, the temperature of the wash water discharged from the 3rd water discharge hole 474c rises to 40 degree | times between time T2-T3.

  Thereafter, at time T3, the control unit 405 receives an instruction to switch the water discharge hole to the water discharge hole 474b during the process of step S7 (YES in S8), and finely adjusts the position of the nozzle 473 (S41).

  FIG. 11A shows the positional relationship between the stator 600 and the rotor 700 at time T3. As shown in FIG. 11A, the notch 704 of the rotor 700 communicates with the bypass channel hole 604 of the stator 600. That is, the stator 600 and the rotor 700 communicate with each other only in the bypass channel hole 604.

  Therefore, as shown in FIG.11 (b), the water discharge from each water discharge hole 474a, 474b, 474c is not performed. Note that, from time T3 to time T4, the time required for fine adjustment of the position of the nozzle 473 is preferably 2 seconds or less, and more preferably about 0.5 seconds or less (S21).

  Thereafter, at time T4, the control unit 405 starts the process of step S9, here, the soft start of the water discharge hole 474b (S42 to S46).

  FIG. 12A shows the positional relationship between the stator 600 and the rotor 700 at time T4. As shown in FIG. 12A, the notch 704 of the rotor 700 communicates with a recess 612 that communicates with the second water discharge channel hole 602. The through hole 702 of the rotor 700 communicates with a through hole 603 b that is one of the third water discharge channel holes 603. Accordingly, the stator 600 and the rotor 700 are communicated with each other in the second water discharge channel hole 602 and the third water discharge channel water discharge hole 603.

  Therefore, as shown in FIG.12 (b), water discharge is performed from two water discharge holes, the 2nd water discharge hole 474b and the 3rd water discharge hole 474c. In addition, the water discharge flow rate from the 2nd water discharge hole 474b is larger than the water discharge flow rate from the 3rd water discharge hole 474c, and especially the water discharge flow rate from the 3rd water discharge hole 474c is a flow volume of a grade which does not land on a user. Therefore, the user can use the sanitary washing device 100 without being aware of water discharged from the third water discharge hole 474c.

  Thereafter, at time T5, the control unit 405 ends the soft start process in the water discharge hole after switching, and starts the process in step S11, here, main cleaning by the water discharge hole 474b (S11).

  FIG. 13A shows the positional relationship between the stator 600 and the rotor 700 at time T5. As shown in FIG. 13A, the notch 704 of the rotor 700 communicates with a recess 612 that communicates with the second water discharge channel hole 602. That is, the stator 600 and the rotor 700 communicate with each other only in the second water discharge channel hole 602.

  Therefore, as shown in FIG.13 (b), water discharge is performed only in the 2nd water discharge hole 474b. In addition, as shown in FIG. 7, the temperature of the wash water discharged from the 2nd water discharge hole 474b rises to 40 degree | times between time T5-T6.

  As described above, in this specific example, water is first discharged from the third water discharge hole 474c, and then the water discharge hole is switched to the second water discharge hole 474b. At that time, as shown in FIG. 7, the temperature of the cleaning water discharged from the second water discharge hole 474b is increased more than before by discharging water from the second water discharge hole 474b at the time of soft start of the third water discharge hole 474c. I am letting. Therefore, even if it is a case where a water discharge hole is switched from the 3rd water discharge hole 474c to the 2nd water discharge hole 474b, it does not give a cool feeling to a user and can provide the comfortable toilet apparatus 1. FIG.

  As mentioned above, although embodiment of this invention was described, the said embodiment showed one of the application examples of this invention, and in the meaning which limits the technical scope of this invention to the specific structure of the said embodiment. Absent. Various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Toilet apparatus 20 Flow path 20a 1st water discharge flow path 20b 2nd water discharge flow path 20c 3rd water discharge flow path 100 Sanitary washing apparatus 405 Control part 440 Heat exchanger unit 473 Nozzle 474a 1st water discharge hole 474b 2nd water discharge hole 474c 1st Three spouts 800 toilet

Claims (5)

A nozzle having a first water discharge hole and a second water discharge hole for discharging washing water to a human body local part ;
A flow path for supplying cleaning water to the nozzle;
A heat exchanger provided in the flow path for raising the temperature of the washing water to a predetermined temperature;
A control unit for controlling the supply of washing water to the first water discharge hole and the second water discharge hole;
A sanitary washing device comprising:
Wherein the control unit, the nozzle is advanced into the bowl, said in control to gradually increase the first amount of water of water jetted hole or al spouting, from said first jetting port, said first water discharge port Water is discharged for a predetermined time until the flow rate from the specified instantaneous flow rate becomes a predetermined flow rate, and is discharged from the second water discharge hole at a flow rate that is smaller than the specified instantaneous flow rate and does not reach the user. Characteristic sanitary washing device. Wherein, according to claim 1, wherein the wash water flow rate supplied to the first water discharge port, characterized in that a constant total flow rate of the washing water supplied to the second water discharge port Sanitary washing device. The said control part makes the sum total of the flow volume of the wash water supplied to said 1st water discharge hole, and the flow volume of the wash water supplied to said 2nd water discharge hole substantially the same as a setting flow volume. sanitary washing apparatus according to 2. When switching the water discharge from the first water discharge hole to the second water discharge hole, the control unit finely adjusts the position of the nozzle after stopping the water discharge from the first water discharge hole, and then The sanitary washing device according to claim 1, wherein water discharge from the second water discharge hole is started. The toilet apparatus provided with the sanitary washing apparatus as described in any one of Claims 1 thru | or 4 , and a toilet bowl.

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