JP6288546B2 - Sanitary washing device - Google Patents

Description

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

  In a site where a non-residential (public) sanitary washing device is installed, a plurality of sanitary washing devices are generally connected to one system of electrical wiring or one breaker. For this reason, public sanitary washing apparatuses are generally equipped with hot water storage type heat exchangers instead of instantaneous heat exchangers so that a plurality of sanitary washing apparatuses can be used simultaneously. This is because the power consumption (power consumption) per unit time of the hot water storage type heat exchanger is lower than the power consumption (power consumption) per unit time of the instantaneous heat exchanger.

  However, the hot water storage type heat exchanger has a structure in which hot water is stored in a tank even when not in use. Therefore, the heat dissipation amount of the hot water storage type heat exchanger is larger than the heat dissipation amount of the instantaneous heat exchanger. Thereby, about the public hygiene washing | cleaning apparatus provided with the hot water storage type heat exchanger, there exists a subject that a running cost is comparatively high.

  On the other hand, in general, a plurality of sanitary washing apparatuses are not used at the same time for sanitary washing apparatuses for houses. Therefore, in general, a sanitary washing apparatus for homes includes an instantaneous heat exchanger whose running cost is relatively low. Thus, generally, the heat exchanger provided in the public sanitary washing device is different from the heat exchanger provided in the residential sanitary washing device. For this reason, for example, parts such as a heater cannot be shared. Then, there is a problem that the manufacturing cost increases and the part management cost increases.

  On the other hand, compared to residential sanitary washing devices, the rated power is assured so that an instant heat exchanger can be installed in public sanitary washing devices and multiple sanitary washing devices can be used simultaneously. One measure is to reduce (maximum power consumption per sanitary washing device). In this case, however, the amount of heat required for the heat exchanger to heat the specified amount of water to the specified temperature is insufficient. Therefore, even if a warm water preparation step such as “wet” is performed before the body is washed, water that has not been heated sufficiently remains in the flow path of the sanitary washing device. Then, the water is applied to the user at the start of body washing, and there is a problem that the user is uncomfortable. In addition, a warm water preparation process means the process of passing water in a flow path and starting a heat exchanger. On the other hand, when the heat exchanger heats a specified amount of water to a specified temperature, the heating time becomes longer than before the rated power is lowered. Then, the subject that the user waits for completion of a warm water preparation process becomes long.

Japanese Patent No. 3627525 Japanese Patent Laid-Open No. 2004-232401

  The present invention has been made on the basis of recognition of such a problem, and provides a sanitary washing device that can sufficiently raise the temperature of water or suppress discomfort to the user. Objective.

According to a first aspect of the present invention, there is provided a cleaning nozzle that has a water discharger and jets water from the water discharger to clean a user's body, a flow path that guides water supplied from a water supply source to the cleaning nozzle, and the flow An instantaneous heat exchanger for heating water supplied from the water supply source provided in a passage; water supply switching means for switching between water supply and water stoppage of the water supplied from the water supply source; A water temperature detecting means for detecting the temperature of the water heated by the heat exchanger, and a flow rate of water provided in the flow path and flowing in the flow path is less than the first flow rate and the first flow rate. A flow rate adjusting means that can be adjusted to any one of the two flow rates, an instruction means for instructing an operation of cleaning the body of the washing nozzle, and when the instruction means instructs the operation, the water supply switching means and The flow rate adjusting means is controlled to control the first flow rate and Wherein the water supply to the flow path starts in one of the flow rate of the second flow rate, the temperature of the water inside of the flow path which is detected by the coolant temperature detecting means and controls the instantaneous type heat exchanger Allowable to any of the control unit that executes the first hot water preparation step for raising the temperature to the first specified temperature, the first set power, and the second set power that is lower than the first set power An allowable power setting means for setting the power, and when the allowable power setting means sets the allowable power to the first set power, the control unit is configured to set the power at the first flow rate. When the first warm water preparation step is executed and the allowable power setting means sets the allowable power to the second set power, the control unit sets the first flow rate at the second flow rate. It is a sanitary washing apparatus characterized by performing a warm water preparation process.

  According to this sanitary washing device, in the first hot water preparation step, the flow rate of the water flowing through the flow path can be adjusted to one of the first flow rate and the second flow rate by the flow rate adjusting means. The water inside the path can be raised to the first specified temperature. Therefore, it is possible to suppress water that has not been heated to the first specified temperature from being jetted to the user, and to suppress discomfort to the user. Alternatively, when the water in the flow path is heated to the first specified temperature, the user is prevented from waiting for a long time, and the user can comfortably use the sanitary washing device. it can.

Furthermore, according to this sanitary washing device, the control unit controls the flow rate adjusting means according to the allowable power of the sanitary washing device set by the allowable power setting means, and adjusts the flow rate of the first hot water preparation step. Even when the allowable power is set to the second set power, the water inside the flow path can be raised to the first specified temperature. Therefore, it is possible to suppress water that has not been heated to the first specified temperature from being jetted to the user, and to suppress discomfort to the user.

According to a second aspect of the present invention, in the first aspect of the present invention, the control unit further includes detection means for detecting the user, and when the detection means detects the user, the control unit includes the water supply switching means and the flow rate adjustment means. control to start the water supply to the flow path, raising the temperature of the water inside of the flow path which is detected by the coolant temperature detecting means and controls the instantaneous type heat exchanger to a second predetermined temperature In the second hot water preparation step, when the allowable power setting means sets the allowable power to the first set power, the flow rate of the water flowing in the flow path is set to the first When the second hot water preparation step adjusted to the flow rate is further performed and the allowable power setting means sets the allowable power to the second set power, the water flowing in the flow path The second hot water preparation in which the flow rate of the water is adjusted to the second flow rate It is a sanitary washing device, characterized in that it further executes a degree.

  According to this sanitary washing device, the control unit executes the second hot water preparation step in addition to the first hot water preparation step, so that the water in the flow path is once before the user performs the washing. The temperature can be raised to the second specified temperature. Further, even when the allowable power is set to the second set power, the water inside the flow path can be raised to the second specified temperature. Therefore, it is possible to prevent water that has not been heated to the specified temperature from being jetted to the user. Further, in the first hot water preparation step, the water in the flow path is preliminarily provided by the second hot water preparation step. Since the temperature has been raised, the time required to raise the temperature to the first specified temperature can be shortened, the user can be prevented from waiting for a long time, and the user can feel uncomfortable. Can be suppressed.

3rd invention is further equipped with the incoming water temperature detection sensor which detects the temperature of the water supplied to the said instantaneous heat exchanger in 2nd invention, The said control part is the temperature which the said incoming water temperature detection sensor detected Is equal to or higher than a third specified temperature, even when the allowable power setting means sets the allowable power to the second set power, the first hot water preparation step at the first flow rate and The sanitary washing device executes at least one of the second warm water preparation steps.

  According to this sanitary washing device, when the temperature of the water supplied to the instantaneous heat exchanger is equal to or higher than the third specified temperature, even if the allowable power of the sanitary washing device is the second set power, The control unit executes the first warm water preparation process at the first flow rate. Therefore, the temperature of the water inside the flow path can be raised more quickly. Thereby, it can suppress that a user waits for a long time, and the user can use a sanitary washing apparatus comfortably.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the apparatus further includes a nozzle cleaning chamber for cleaning the cleaning nozzle, and the flow path includes a main flow path provided upstream of the flow rate adjusting means. the a first bypass passage for supplying water to the nozzle washing chamber provided on the downstream side of the flow rate adjusting means, and supplying water to the nozzle washing chamber also provided on the downstream side of the flow rate adjusting means and the A second bypass flow path having an inner diameter smaller than the inner diameter of the first bypass flow path, wherein the flow rate adjusting means can switch the connection of the flow paths, and the permissible power setting means is the permissible power When the power is set to the first set power, the control unit controls the flow rate adjusting means to connect the main flow path and the first bypass flow path, so that the allowable power setting is performed. Means sets the allowable power to the second setting If you have set the force, the control unit is a sanitary washing device for causing and controlling the flow rate adjusting means communicating with said second bypass flow path and the main channel.

  According to this sanitary washing device, the flow rate can be adjusted by switching two flow paths having different inner diameters. Therefore, compared with the case where the flow rate is adjusted using, for example, a flow rate adjustment valve, the flow rate of water flowing through the flow path can be made substantially the same even when the flow rate is relatively small. Thereby, the nozzle cleaning effect can be made substantially the same.

  According to the aspect of the present invention, there is provided a sanitary washing device that can sufficiently raise the temperature of water or suppress discomfort to the user.

It is a typical perspective view showing the toilet apparatus provided with the sanitary washing apparatus concerning embodiment of this invention. It is a block diagram showing the principal part structure of the sanitary washing apparatus concerning this embodiment. It is a timing chart figure showing the warm water preparation of this embodiment. It is a graph explaining the 1st warm water preparation process of this embodiment. It is a graph which illustrates an example of the relationship between the rated power of a heater and the amount of water discharge. It is a graph which illustrates an example of the temperature rising capability of a heater. It is a flowchart figure which illustrates the specific example of warm water preparation of this embodiment. It is a typical perspective view which illustrates the example of the flow volume and flow path switching valve of this embodiment. It is a schematic diagram which illustrates the specific example of the flow volume and flow-path switching valve of this embodiment. It is a schematic diagram which illustrates the flow volume and flow path switching valve concerning a comparative example. FIG. 6 is a schematic cross-sectional view illustrating another specific example of the flow rate / flow path switching valve of the embodiment. It is a block diagram showing the other principal part structure of the sanitary washing apparatus concerning this embodiment.

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

  The toilet device shown in FIG. 1 includes a Western-style seat toilet (hereinafter simply referred to as “toilet” for convenience of explanation) 800 and a sanitary washing device 100 provided thereon. The sanitary washing device 100 includes a casing 400, a toilet seat 200, and a toilet lid 300. The toilet seat 200 and the toilet lid 300 are pivotally supported with respect to the casing 400 so as to be freely opened and closed. Note that the toilet lid 300 is not necessarily provided.

  Inside the casing 400 is incorporated a body washing function unit that implements washing of a user who sits on the toilet seat 200 such as a “butt”. Further, for example, the casing 400 is provided with a seating detection sensor 404 that detects that the user has sat on the toilet seat 200. When the seating detection sensor 404 detects a user sitting on the toilet seat 200, when the user operates an operation unit (instruction means) 500 such as a remote controller, the cleaning nozzle 473 moves into the bowl 801 of the toilet 800. Can be made. That is, when the user operates the operation unit 500, the operation unit 500 instructs the control unit (control unit) 405 to perform a body cleaning operation by the cleaning nozzle 473. In the sanitary washing apparatus 100 shown in FIG. 1, the washing nozzle 473 has entered the bowl 801.

A water discharge portion 474 is provided at the tip of the cleaning nozzle 473. The washing nozzle 473 can wash water from a water discharge portion 474 provided at the tip of the nozzle so as to wash the “buttock” of the user sitting on the toilet seat 200. In the present specification, the term “water” includes not only cold water but also warm hot water.
The water discharge part 474 has the 1st water discharge port 474a, the 2nd water discharge port 474b, and the 3rd water discharge port 474c. For example, the cleaning mode (injection mode) ejected by the first water outlet 474a is different from the cleaning mode (injection mode) in which the second water outlet 474b and the third water outlet 474c respectively inject. For example, the cleaning mode in which the second water outlet 474b ejects is different from the cleaning mode in which the third water outlet 474c ejects. Note that the number of water outlets provided in the water discharger 474 is not limited to three.

  As shown in FIG. 2, the sanitary washing device 100 according to the present embodiment includes a flow path 20 that guides water supplied from a water supply source 10 such as a water supply or a water storage tank to the nozzle unit 470. An electromagnetic valve (water supply switching means) 431 is provided upstream 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. That is, the electromagnetic valve 431 switches between water supply and water stop to the cleaning nozzle 473 for water supplied from the water supply source 10.

  An incoming water temperature detection sensor 433 is provided downstream of the electromagnetic valve 431. The incoming water temperature detection sensor 433 is, for example, a thermistor and detects the temperature of water supplied to the heat exchanger unit 440. A heat exchanger unit (instantaneous heat exchanger) 440 is provided downstream of the incoming water temperature detection sensor 433. The heat exchanger unit 440 includes a heater, and heats the water supplied from the water supply source 10 to raise the temperature to, for example, a specified temperature. The heat exchanger unit 440 of this embodiment is an instantaneous heating type (instantaneous type) heat exchanger using, for example, a ceramic heater, and in a short time compared to a hot water storage type heat exchanger using a hot water storage tank. Water can be raised to a specified temperature.

  A water temperature detecting means 435 is provided downstream of the heat exchanger unit 440. The water temperature detection means 435 is a thermistor, for example, and detects the temperature of the water heated by the heat exchanger unit 440. An electrolytic cell unit 450 capable of generating sterilizing water is provided downstream of the water temperature detecting means 435. The cleaning 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. However, the electrolytic cell unit 450 is not necessarily provided.

  A flow rate / flow path switching valve 460 is provided downstream of the heat exchanger unit 440 or the electrolytic cell unit 450. The flow rate / flow path switching valve 460 adjusts the flow rate of water flowing inside the flow path 20. Alternatively, the flow rate / flow path switching valve 460 performs opening / closing of water supply to the cleaning nozzle 473 and the nozzle cleaning chamber 478 and switching of the water supply destination (switching of the flow path). That is, the flow rate / flow path switching valve 460 serves both as a flow rate adjusting means and a flow path switching means. In the present embodiment, the flow path switching valve 460 can switch the water supply destination (flow path connection destination) to either the cleaning nozzle 473 or the nozzle cleaning chamber 478.

  A nozzle unit 470 is provided downstream of the flow rate / flow path switching valve 460. The nozzle unit 470 includes a cleaning nozzle 473, a nozzle cleaning chamber 478, and a nozzle motor 476. The cleaning nozzle 473 receives driving force from the nozzle motor 476 and can advance into the bowl 801 of the toilet bowl 800 or retreat into the casing 400. That is, the nozzle motor 476 can move the cleaning nozzle 473 forward and backward based on a command from the control unit 405.

  The first nozzle flow path 21, the second nozzle flow path 22, and the third nozzle flow path 23 are connected to the cleaning nozzle 473. The first nozzle channel 21 guides water to the first water outlet 474a. The second nozzle channel 22 guides water to the second water outlet 474b. The third nozzle channel 23 guides water to the third water outlet 474c. The flow rate / flow path switching valve 460 can switch the water supply destination (flow path connection destination) to one of the first nozzle flow path 21, the second nozzle flow path 22, and the third nozzle flow path 23. .

  The nozzle cleaning chamber 478 can sterilize or clean the outer peripheral surface (body) of the cleaning nozzle 473 by spraying sterilizing water or water from a water discharge unit (not shown) provided therein. Alternatively, the nozzle cleaning chamber 478 can sterilize or clean the portion of the water discharger 474 of the cleaning nozzle 473 in the housed state.

  A bypass channel 24 is provided between the flow rate / channel switching valve 460 and the nozzle cleaning chamber 478. One end of the bypass channel 24 is connected to a flow rate / channel switching valve 460. The other end of the bypass channel 24 is connected to the nozzle cleaning chamber 478. The bypass channel 24 guides the water supplied through the flow rate / channel switching valve 460 to the nozzle cleaning chamber 478.

  The channel 20 includes a main channel 25, a first nozzle channel 21, a second nozzle channel 22, a third nozzle channel 23, and a bypass channel 24. The main flow path 25 is provided on the upstream side of the flow rate / flow path switching valve 460, and the first nozzle flow path 21, the second nozzle flow path 22, and the third flow path are controlled by the flow volume / flow path switching valve 460. The nozzle channel 23 and the bypass channel 24 are branched. The flow path switching valve 460 can switch the water supply destination (flow path connection destination) to the bypass flow path 24. That is, the flow rate / flow path switching valve 460 can supply water to any of the first nozzle flow path 21, the second nozzle flow path 22, the third nozzle flow path 23, and the bypass flow path 24. Can be switched.

  The control unit 405 is supplied with electric power from the power supply circuit 401 and detects an entry of a user into a toilet room (a private room of a toilet booth in the case of public use) 402 or a toilet seat 200. Based on signals from a human body detection sensor (detection means) 403 that detects a user in front, a seat detection sensor (detection means) 404 that detects the user's seating on the toilet seat 200, an operation unit 500, and the like, The operations of the electromagnetic valve 431, the heat exchanger unit 440, the electrolytic cell unit 450, the flow rate / flow path switching valve 460, and the nozzle motor 476 can be controlled.

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

  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 entrance detection sensor 402 can detect a user immediately after opening a toilet room door or entering a toilet room and a user existing in front of the door trying to enter the toilet room. 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.

  As shown in FIG. 2, the sanitary washing device 100 according to this embodiment includes an allowable power setting unit 407. The allowable power setting unit 407 can set the allowable power of the sanitary washing device 100 to either the first set power or the second set power. The second set power is lower than the first set power.

FIG. 3 is a timing chart showing the hot water preparation of the present embodiment.
FIG. 4 is a graph for explaining the first warm water preparation step of the present embodiment.
FIG. 3A is a schematic view illustrating an example of the operation of the sanitary washing device. FIG. 3B is a graph illustrating the relationship between the water discharge amount and time. FIG. 3C is a graph illustrating the relationship between the hot water temperature in the flow path 20 and time.

  The sanitary washing device 100 according to the present embodiment performs a warm water preparation operation before starting the washing (main washing) of the user's body. The warm water preparation includes a first warm water preparation process and a second warm water preparation process.

As illustrated in FIG. 3A, when the operation unit 500 instructs the control unit 405 to perform a body washing operation, the control unit 405 executes a first hot water preparation process.
The first warm water preparation step includes a “pre-cleaning” step and a “body cleaning” step.

  In “pre-cleaning”, the control unit 405 controls the electromagnetic valve 431 and the flow rate / flow path switching valve 460, and includes all the water discharge ports (the first water discharge port 474a, the second water discharge port 474b, and the water discharge unit 474). Water is discharged from the third water discharge port 474c). Thereby, the water in the flow path 20 between the heat exchanger unit 440 and the washing nozzle 473 is replaced with hot water heated by the heat exchanger unit 440.

  During the pre-cleaning operation, the cleaning nozzle 473 is in a standby state in which it is retracted into the casing 400. Therefore, the water discharged from the water discharge unit 474 is reflected by, for example, the inner surface of the nozzle cleaning chamber 478 and is applied to the outer peripheral surface of the cleaning nozzle 473 and the water discharge unit 474. As a result, the outer peripheral surface of the cleaning nozzle 473 and the water discharger 474 are cleaned by the water discharged by the cleaning nozzle 473 itself and reflected by the inner surface of the nozzle cleaning chamber 478 (self-cleaning).

  In “body cleaning”, the control unit 405 controls the electromagnetic valve 431 and the flow rate / flow path switching valve 460 to inject water from a water discharge unit (not shown) provided in the nozzle cleaning chamber 478 through the bypass flow path 24. . Thereby, the outer peripheral surface of the cleaning nozzle 473 can be cleaned. In addition, the control unit 405 controls the nozzle motor 476 to advance the cleaning nozzle 473 into the bowl 801 of the toilet bowl 800. The control unit 405 can clean the outer peripheral surface of the cleaning nozzle 473 by ejecting water from a water discharge unit (not shown) of the nozzle cleaning chamber 478 when the cleaning nozzle 473 advances.

  As described above, the control unit 405 executes the first warm water preparation step, thereby performing the temperature of the water inside the flow path 20 between the heat exchanger unit 440 and the cleaning nozzle 473 (in other words, the water temperature detection). The temperature of the water detected by the means 435 can be raised to a specified temperature (first specified temperature) by the heat exchanger unit 440.

As shown in FIG. 3A, for example, when the seating detection sensor 404 detects a user seated on the toilet seat 200, the control unit 405 performs the second hot water preparation before executing the first hot water preparation step. Execute the process.
The second warm water preparation step includes a “water removal” step.
The trigger for starting the second warm water preparation step is not limited to the seating detection sensor 404 detecting the user, and the human body detection sensor 403 or the entrance detection sensor 402 may detect the user. Good.

  In the “water draining”, the control unit 405 controls the electromagnetic valve 431 and the flow rate / flow path switching valve 460 to control all the water discharge ports (the first water discharge port 474a, the second water discharge port 474b, and the first water discharge port 474). Water is discharged from the third water outlet 474c). Thereby, the water inside the flow path 20 is discharged to the bowl 801 of the toilet bowl 800.

  As described above, the control unit 405 starts the water supply to the inside of the flow path 20 by executing the second warm water preparation step, and the water remaining inside the flow path 20 is supplied to the bowl 801 of the toilet bowl 800. Discharge. In the present embodiment, the second hot water preparation step is not necessarily executed.

  Here, at a site where a non-residential (public) sanitary washing device is installed, a plurality of sanitary washing devices are generally connected to one system of electrical wiring or one breaker. When the rated power (maximum power consumption per sanitary cleaning device) is reduced as compared with a residential sanitary cleaning device so that a plurality of sanitary cleaning devices 100 can be used simultaneously, the heat exchanger unit 440 The amount of heat required to heat a specified amount of water to a specified temperature is insufficient. Therefore, even if warm water preparation is performed before the main cleaning is started, water that is not sufficiently heated remains in the flow path 20. Then, the water is applied to the user at the start of body washing, which may cause discomfort to the user. On the other hand, when the heat exchanger unit 440 heats a prescribed amount of water to a prescribed temperature, the heating time becomes longer than before the rated power is lowered. Then, the user may wait longer for completion of warm water preparation.

This will be further described with reference to the drawings.
FIG. 5 is a graph illustrating an example of the relationship between the rated power of the heater and the water discharge amount.
FIG. 6 is a graph illustrating an example of the heating capability of the heater.
FIG. 6 is a graph illustrating an example of the heating capability of the heater when the water discharge amount is set to a predetermined value.

  The horizontal axis of the graph shown in FIG. 5 represents the rated power of the heater. The vertical axis of the graph shown in FIG. 5 represents the water discharge amount. The horizontal axis of the graph shown in FIG. 6 represents time. The vertical axis of the graph shown in FIG. 6 represents the rising temperature (ΔT).

  FIG. 5 shows the water heating capacity of the heater of the heat exchanger unit 440. That is, when the rated power of the heater is relatively large, the upper limit of the amount of water discharged (the flow rate of water supplied to the heat exchanger unit 440) at which the heater can raise water to a specified temperature is relatively Many. On the other hand, when the rated power of the heater is relatively low, the upper limit of the water discharge amount that allows the heater to raise the water to a specified temperature is relatively small. That is, in the case where the heat exchanger unit 440 is an instantaneous heating type heat exchanger, when the rated power of the heater is relatively low, the water is raised to a specified temperature unless the water discharge amount is relatively small. I can't.

  Numerical values (1 to 4) in the upper part of the graph shown in FIG. 5 represent the upper limit of the number of simultaneous sanitary washing apparatuses 100. As described above, in public sanitary washing apparatuses, generally, a plurality of sanitary washing apparatuses are connected to one electrical wiring line or one breaker. As shown in FIG. 5, in order to support simultaneous use of a plurality of sanitary washing apparatuses 100, it is necessary to reduce the rated power of one heater. When the number of units connected to one system of electrical wiring or one breaker is relatively large, the rated power of the heater per unit needs to be relatively lowered.

  On the other hand, a case where the rated power of the heater is lowered while keeping the water discharge amount constant will be described with reference to FIG. For the rated powers W11, W12, and W13 shown in FIG. 6, the relational expression of W13 <W12 <W11 is established. As shown in FIG. 6, when the rated power is lowered while the water discharge amount is kept constant, the upper limit (temperature rise capability) of the rising temperature of water becomes relatively low (T13 <T12 <T11). For this reason, when the rated power is lowered with the water discharge amount kept constant, water that is not sufficiently heated may remain in the flow path 20. Then, the water is applied to the user at the start of body washing, which may cause discomfort to the user.

  Further, if the rated power is lowered with the water discharge amount kept constant, the time taken for the water temperature to reach the upper limit temperature becomes longer (t11 <t12 <t13). Therefore, if the rated power is lowered with the water discharge amount kept constant, the heating time may become longer. Then, the user may wait longer for completion of warm water preparation.

On the other hand, in this embodiment, as shown in FIG. 3B and FIG. 4, the flow rate / flow path switching valve 460 changes the flow rate of water flowing through the flow path 20 to the first flow rate and the second flow rate. The flow rate can be adjusted to any flow rate. The second flow rate is less than the first flow rate. The control unit 405 controls the flow rate / flow path switching valve 460 to execute the first hot water preparation step at any one of the first flow rate and the second flow rate.
A specific example of the flow rate / flow path switching valve 460 will be described later.

  As shown in the upper part of the table shown in FIG. 4, when the allowable power setting means 407 sets the allowable power of the sanitary washing device 100 to the first set power (for example, the number of simultaneous sanitary washing devices 100 is one. In the case), it is assumed that the time of the first hot water preparation step when the flow rate / flow path switching valve 460 sets the flow rate to the first flow rate is “t1”. When the allowable power setting unit 407 sets the allowable power of the sanitary washing device 100 to the second set power as shown in the middle part of the table shown in FIG. 4 (for example, the number of simultaneous sanitary washing devices 100 is plural. In the case), when the flow rate / flow path switching valve 460 sets the flow rate to the first flow rate, the time t2 of the first hot water preparation step becomes longer than the time t1 of the first hot water preparation step. This is as described above with reference to FIGS. As described above with reference to FIG. 2, the second set power is lower than the first set power.

  On the other hand, in this embodiment, as shown in the lower part of the table shown in FIG. 4, when the allowable power setting unit 407 sets the allowable power of the sanitary washing device 100 to the second set power, The control unit 405 controls the flow rate / flow path switching valve 460, sets the flow rate of water flowing through the flow path 20 to the second flow rate, and executes the first hot water preparation step. Thereby, time t2 of a 1st warm water preparation process can be made shorter than time t3 of a 1st warm water preparation process. On the other hand, when the allowable power setting means 407 sets the allowable power of the sanitary washing device 100 to the first set power, the control unit 405 controls the flow rate / flow path switching valve 460 to control the flow path 20. The first hot water preparation step is executed by setting the flow rate of water flowing through the first flow rate (upper part of the table in FIG. 4).

  According to the present embodiment, in the first hot water preparation step, the flow rate of the water flowing through the flow path 20 can be adjusted by the flow rate / flow path switching valve 460 to one of the first flow rate and the second flow rate. Therefore, as shown in FIGS. 3B and 3C, the water inside the flow path 20 can be raised to a specified temperature (first specified temperature). Therefore, it is possible to suppress water that has not been heated to the specified temperature from being jetted to the user, and to suppress discomfort to the user. Alternatively, when the water in the flow path 20 is heated to a specified temperature, the user is prevented from waiting for a long time, and the user can use the sanitary washing device 100 comfortably. it can.

  Further, the control unit 405 controls the flow rate / flow path switching valve 460 according to the allowable power of the sanitary washing device 100 set by the allowable power setting means 407, and adjusts the flow rate of the first hot water preparation step. Even when the power is set to the second set power, the water inside the flow path 20 can be raised to a specified temperature. Therefore, it is possible to suppress water that has not been heated to the specified temperature from being jetted to the user, and to suppress discomfort to the user.

  As described above, for example, when the seating detection sensor 404 detects a user seated on the toilet seat 200, the control unit 405 executes the second hot water preparation step before executing the first hot water preparation step. The control unit 405 executes the second warm water preparation step, so that the temperature of the water inside the flow path 20 between the heat exchanger unit 440 and the cleaning nozzle 473 (in other words, the water temperature detection means 435). The detected water temperature) can be raised to a specified temperature (second specified temperature) by the heat exchanger unit 440. As shown in FIG. 3B, in the second warm water preparation step, when the allowable power setting means 407 sets the allowable power of the sanitary washing device 100 to the second set power, the flow rate / flow rate is set. The path switching valve 460 sets the flow rate of water flowing through the flow path 20 to the second flow rate. On the other hand, in the second hot water preparation step, when the allowable power setting means 407 sets the allowable power of the sanitary washing device 100 to the first set power, the flow rate / flow path switching valve 460 The flow rate of water flowing through 20 is set to the first flow rate.

  According to this, the control unit 405 executes the second hot water preparation step in addition to the first hot water preparation step, so that the water inside the flow path 20 is once before the user performs cleaning. The temperature can be raised to a specified temperature (second specified temperature). In addition, even when the allowable power is set to the second set power, the water in the flow path 20 can be raised to a specified temperature (second specified temperature). Therefore, it is possible to prevent water that has not been heated to the specified temperature from being jetted to the user, and further, in the first hot water preparation step, the second hot water preparation step in advance, Since the temperature of the water is raised, the time required to raise the temperature to the first specified temperature can be shortened, and the user can be prevented from waiting for a long time. An unpleasant feeling can be suppressed.

  The allowable power setting unit 407 of the present embodiment is, for example, a physical changeover switch or a software selection unit. In this case, for example, the first software and the second software are stored in a memory (not shown) of the control unit 405. The first software sequence is different from the second software sequence. The allowable power setting unit 407 selects one of the first software and the second software, thereby changing the allowable power of the sanitary washing device 100 to either the first set power or the second set power. Set.

  Alternatively, the allowable power setting unit 407 of the present embodiment may be a parameter set selection unit, for example. In this case, for example, the first software is stored in a memory (not shown) of the control unit 405, and the second software is not stored. Further, the first parameter set and the second parameter set are stored in a memory (not shown) of the control unit 405. The first parameter set is different from the second parameter set. The permissible power setting means 407 selects one of the first parameter set and the second parameter set, thereby setting the permissible power of the sanitary washing device 100 to the first set power and the second set power. Set to either. That is, the basic sequence is common in both cases of the first set power and the second set power, and the allowable power setting means 407 selects a parameter set in the sequence. In this case, a reset function is provided so that the first parameter set and the second parameter set can be switched with each other.

FIG. 7 is a flowchart illustrating a specific example of warm water preparation according to this embodiment.
First, the incoming water temperature detection sensor 433 detects the temperature of the water supplied to the heat exchanger unit 440 (step S101). The control unit 405 determines whether or not the water temperature (detected temperature) detected by the incoming water temperature detection sensor 433 is equal to or higher than a specified temperature (third specified temperature) (step S103).

  When the control unit 405 determines that the detected temperature is not equal to or higher than the specified temperature (step S103: NO), whether the allowable power of the sanitary washing device 100 set by the allowable power setting unit 407 is the second set power. Is determined (step S105). When the second set power is set (step S105: YES), the control unit 405 controls the flow rate / flow path switching valve 460 and prepares hot water at the second flow rate (first hot water preparation step). And a 2nd warm water preparation process is performed (step S107). On the other hand, when the second set power is not set (step S105: NO), the control unit 405 controls the flow rate / flow path switching valve 460 and executes hot water preparation at the first flow rate (step S105). S109).

  When the control unit 405 determines that the detected temperature is equal to or higher than the specified temperature (step S103: YES), whether or not the allowable power of the sanitary washing device 100 set by the allowable power setting unit 407 is the second set power. Is determined (step S111). When the allowable power of the sanitary washing device 100 is not the second set power (step S111: NO), the control unit 405 controls the flow rate / flow path switching valve 460 and executes hot water preparation at the first flow rate. (Step S113). On the other hand, when the allowable power of the sanitary washing device 100 is the second set power (step S111: YES), the control unit 405 controls the flow rate / flow path switching valve 460 and the allowable power of the sanitary washing device 100. Even if it is 2nd setting electric power, warm water preparation is performed with a flow volume (for example, 1st flow volume) larger than a 2nd flow volume (step S115).

  According to this specific example, when the temperature of the water supplied to the heat exchanger unit 440 is equal to or higher than a specified temperature (third specified temperature), the allowable power of the sanitary washing device 100 is the second set power. Even so, the control unit 405 executes the warm water preparation at a flow rate higher than the second flow rate (for example, the first flow rate). Therefore, the temperature of the water inside the flow path 20 can be raised more quickly. Thereby, it can suppress that a user waits for a long time, and the user can use the sanitary washing apparatus 100 comfortably.

FIG. 8 is a schematic perspective view illustrating a specific example of the flow rate / flow path switching valve of the present embodiment.
FIG. 9 is a schematic view illustrating a specific example of the flow rate / flow path switching valve of the present embodiment.
FIG. 10 is a schematic view illustrating the flow rate / flow path switching valve according to the comparative example.

  FIG. 9A and FIG. 10A are schematic plan views showing the rotor. FIG. 9B and FIG. 10B are schematic plan views showing the stator. FIG. 9C and FIG. 9D are schematic cross-sectional views taken along the cutting plane AA shown in FIG. 9B. FIG. 9E and FIG. 9F are schematic cross-sectional views taken along the cutting plane BB shown in FIG. 9B. FIG.10 (c)-FIG.10 (f) are typical sectional drawings in the cut surface CC represented to FIG.10 (b).

  As shown in FIG. 8, the flow rate / flow path switching valve 460 of this embodiment includes a rotor 461 and a stator 465. As described above with reference to FIG. 2, the flow rate / flow path switching valve 460 switches the water supply destination to any one of the first nozzle flow path 21, the second nozzle flow path 22, and the bypass flow path 24. be able to. In this specific example, the third nozzle channel 23 and the third water discharge port 474c are not provided.

  As shown in FIG. 9A, the rotor 461 of this specific example includes a through hole 462, a bypass port 463, a first self-cleaning port 464a, and a second self-cleaning port 464b. As indicated by an arrow A1 shown in FIG. 8, the rotor 461 can rotate around a shaft 461c (see FIG. 9A). The rotor 461 shown in FIG. 10A is the same as the rotor 461 shown in FIG.

  As shown in FIG. 9B, the stator 465 of this specific example includes a first through hole 466a, a second through hole 466b, a first bypass communication port 467a, and a second bypass communication port. 467b, a first self-cleaning communication port 468a, and a second self-cleaning communication port 468b.

  When the rotor 461 rotates and the through hole 462 of the rotor 461 communicates with the first through hole 466a of the stator 465, water passes through the through hole 462, the first through hole 466a, and the first nozzle channel 21. To the first water outlet 474a. When the rotor 461 rotates and the through hole 462 of the rotor 461 communicates with the second through hole 466b of the stator 465, water passes through the through hole 462, the second through hole 466b, and the second nozzle flow path 22. To the second water outlet 474b.

  When the rotor 461 rotates and the through-hole 462 of the rotor 461 communicates with the first bypass communication port 467a of the stator 465, water passes through the through-hole 462, the first bypass communication port 467a, and the bypass flow path 24, and becomes a nozzle. Guided to the cleaning chamber 478. When the rotor 461 rotates and the bypass port 463 of the rotor 461 communicates with the second bypass communication port 467 b of the stator 465, water passes through the bypass port 463, the second bypass communication port 467 b, and the bypass flow path 24 to the nozzle. Guided to the cleaning chamber 478. That is, the water guided to the nozzle cleaning chamber 478 is guided to the bypass flow path 24 through one of the first bypass communication port 467a and the second bypass communication port 467b.

  When the rotor 461 rotates and the first self-cleaning port 464a of the rotor 461 communicates with the first bypass communication port 467a of the stator 465, water flows between the first self-cleaning port 464a and the first bypass communication port 467a. , And are led to all the water outlets (the first water outlet 474a, the second water outlet 474b, and the third water outlet 474c) of the water discharger 474. When the rotor 461 rotates and the second self-cleaning port 464b of the rotor 461 communicates with the second bypass communication port 467b of the stator 465, the water flows between the second self-cleaning port 464b and the second bypass communication port 467b. , And are led to all the water outlets (the first water outlet 474a, the second water outlet 474b, and the third water outlet 474c) of the water discharger 474.

  As shown in FIG. 10B, the stator 465a of this comparative example includes a first through hole 466a, a second through hole 466b, a first bypass communication port 467a, and a second bypass communication port. 467b, a first self-cleaning communication port 468a, and a second self-cleaning communication port 468b.

  In the flow rate / channel switching valve of the comparative example shown in FIG. 10, the route through which water flows is the same as the route through which water flows in the flow rate / channel switching valve 460 of this specific example described above with reference to FIG.

  In this comparative example, when the first bypass communication port 467a of the stator 465a is used, as shown in FIG. 10C, the through hole 462 of the rotor 461 is provided with the first bypass communication port 467a of the stator 465. Communicate with. As indicated by an arrow A11 shown in FIG. 10C, water passes through the through hole 462 and the first bypass communication port 467a. On the other hand, as shown in FIG. 10D, the second bypass communication port 467 b of the stator 465 is closed by the rotor 461.

  In this comparative example, when the second bypass communication port 467b of the stator 465a is used, the bypass port 463 of the rotor 461 is replaced with the second bypass communication port 467b of the stator 465 as shown in FIG. Communicate with. As indicated by an arrow A12 illustrated in FIG. 10F, water passes through the bypass port 463 and the second bypass communication port 467b. Subsequently, as indicated by an arrow A13 illustrated in FIG. 10E, water passes through the first bypass communication port 467a.

  At this time, the channel cross-sectional area A21 shown in FIG. 10C is substantially the same as the channel cross-sectional area A22 shown in FIG. Therefore, the flow rate of water flowing as indicated by arrow A11 shown in FIG. 10C is substantially the same as the flow rate of water flowing as indicated by arrow A12 shown in FIG.

On the other hand, the stator 465 of this specific example includes a first shelf portion 469a and a second shelf portion 469b.
The first shelf 469a is provided next to the first bypass communication port 467a. As shown in FIGS. 9C and 9D, the distance L1 between the surface 465s of the stator 465 (the boundary surface with the rotor 461) and the first shelf 469a is equal to the first bypass communication. The depth of the port 467a (the thickness of the stator 465) is shorter than L2.
As shown in FIGS. 9E and 9F, the second shelf portion 469b is provided adjacent to the second bypass communication port 467b. The distance L3 between the surface 465s of the stator 465 and the second shelf 469b is shorter than the depth L4 of the second bypass communication port 467b.

  In this specific example, as shown in FIG. 9C, when the through-hole 462 of the rotor 461 is opposed to the first shelf 469a, water is transferred as indicated by an arrow A14 shown in FIG. 9C. The through hole 462, the first shelf 469a, and the first bypass communication port 467a pass through. On the other hand, as shown in FIG. 9D, when the through hole 462 of the rotor 461 is opposed to the first bypass communication port 467a, the water becomes as shown by an arrow A15 shown in FIG. 9D. It passes through the through hole 462 and the first bypass communication port 467a.

  At this time, the channel cross-sectional area A23 shown in FIG. 9C is narrower than the channel cross-sectional area A24 shown in FIG. Therefore, the flow rate of water flowing as indicated by arrow A14 shown in FIG. 9C is smaller than the flow rate of water flowing as indicated by arrow A15 shown in FIG. As described above, the flow rate / flow path switching valve 460 of this specific example can adjust the flow rate by adjusting the relative angle between the stator 465 and the rotor 461. For example, the flow rate / flow path switching valve 460 sets the relationship between the stator 465 and the rotor 461 as shown in FIG. <First flow rate) can be set. For example, the flow rate / flow path switching valve 460 sets the relationship between the stator 465 and the rotor 461 as shown in FIG. > Second flow rate).

  In this specific example, as illustrated in FIG. 9E, when the bypass port 463 of the rotor 461 is opposed to the second shelf portion 469b, water is transferred as indicated by an arrow A16 illustrated in FIG. , The bypass port 463, the second shelf 469b, and the second bypass communication port 467b. On the other hand, as shown in FIG. 9 (f), when the bypass port 463 of the rotor 461 is opposed to the second bypass communication port 467b, as shown by the arrow A17 shown in FIG. It passes through the bypass port 463 and the second bypass communication port 467b.

  At this time, the channel cross-sectional area A25 shown in FIG. 9E is narrower than the channel cross-sectional area A26 shown in FIG. For this reason, the flow rate of water flowing as indicated by arrow A16 shown in FIG. 9E is smaller than the flow rate of water flowing as indicated by arrow A17 shown in FIG. For example, the flow rate / flow path switching valve 460 sets the relationship between the stator 465 and the rotor 461 to the state illustrated in FIG. <First flow rate) can be set. For example, the flow rate / flow path switching valve 460 sets the relationship between the stator 465 and the rotor 461 as shown in FIG. > Second flow rate).

FIG. 11 is a schematic cross-sectional view illustrating another specific example of the flow rate / flow path switching valve of the present embodiment.
In this specific example, the bypass port 463 of the rotor 461 and the second bypass communication port 467b of the stator 465 will be described as examples.
FIG. 11A to FIG. 11C correspond to schematic cross-sectional views taken along the cutting plane BB shown in FIG. 9B.

  The stator 465 of this specific example includes a second shelf 469b and a third shelf 469c. The second shelf 469b is provided next to the second bypass communication port 467b. The third shelf 469c is provided on the side opposite to the second shelf 469b when viewed from the second bypass communication port 467b. As shown in FIG. 11A, when the sanitary washing device 100 is in the standby state, the bypass port 463 faces the second bypass communication port 467b.

  When the rotor 461 rotates as indicated by the arrow A2 shown in FIG. 11A, the water flows between the bypass port 463, the second shelf 469b, and the second as shown by the arrow A18 shown in FIG. Through the bypass communication port 467b. At this time, the channel cross-sectional area A28 shown in FIG. 11B is narrower than the channel cross-sectional area A27 shown in FIG. Therefore, the flow rate of water flowing as indicated by arrow A18 shown in FIG. 11B is smaller than the flow rate of water flowing in the state shown in FIG.

  When the rotor 461 rotates as indicated by an arrow A3 illustrated in FIG. 11A, water is supplied from the bypass port 463, the third shelf 469c, and the second as indicated by an arrow A19 illustrated in FIG. Through the bypass communication port 467b. At this time, the channel cross-sectional area A29 shown in FIG. 11C is narrower than the channel cross-sectional area A27 shown in FIG. Therefore, the flow rate of water flowing as indicated by arrow A19 shown in FIG. 11C is smaller than the flow rate of water flowing in the state shown in FIG.

  Here, in the specific example described above with reference to FIGS. 9E and 9F, when the rotor 461 rotates from the state illustrated in FIG. 9E to the state illustrated in FIG. The flow rate of water flowing through increases.

  On the other hand, in this specific example, a shelf is provided next to both sides of the second bypass communication port 467b. That is, the second shelf 469b is provided next to one of the second bypass communication ports 467b, and the third shelf 469c is provided next to the other of the second bypass communication port 467b.

  Therefore, even if the rotor 461 rotates in any direction from the standby state, the flow rate of water flowing through the flow path 20 decreases. Thereby, it can suppress more reliably that the water which is not heated up to the regulation temperature is injected to a user, and can suppress more reliably giving a user discomfort.

  FIG. 12 is a block diagram showing another main configuration of the sanitary washing device according to the present embodiment. FIG. 12 also shows the main configuration of the water channel system and the electrical system.

The bypass flow path 24 illustrated in FIG. 12 includes a first bypass portion (first bypass flow path) 24a and a second bypass portion (second bypass flow path) 24b. The first bypass part 24 a and the second bypass part 24 b are provided between the flow rate / flow path switching valve 460 and the nozzle cleaning chamber 478. One end of each of the first bypass part 24 a and the second bypass part 24 b is connected to the flow rate / flow path switching valve 460. The other ends of the first bypass portion 24a and the second bypass portion 24b are connected to the nozzle cleaning chamber 478. Each of the first bypass unit 24a and the second bypass unit 24b supplies water to the nozzle cleaning chamber 478. The inner diameter of the second bypass part 24b is smaller than the inner diameter of the first bypass part 24a.
The other main configuration is the same as the main configuration described above with reference to FIG.

  When the allowable power setting means 407 sets the allowable power of the sanitary washing device 100 to the first set power, the control unit 405 controls the flow rate / flow path switching valve 460 to control the main flow path 25 and the first flow rate. The bypass part 24a is communicated. When the allowable power setting unit 407 sets the allowable power of the sanitary washing device 100 to the second set power, the control unit 405 controls the flow rate / flow path switching valve 460 to connect the main flow path 25 and the second flow rate. The bypass part 24b is communicated.

  According to this, the flow rate can be adjusted by switching the two flow paths (the first bypass part 24a and the second bypass part 24b) having different inner diameters. Therefore, compared with the case where the flow rate is adjusted using, for example, a flow rate adjusting valve, the flow rate of water flowing through the flow path 20 can be made substantially the same even when the flow rate is relatively small. Thereby, the nozzle cleaning effect can be made substantially the same.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. As long as the features of the present invention are provided, those skilled in the art appropriately modified the design of the above-described embodiments are also included in the scope of the present invention. For example, the shape, size, material, arrangement, etc. of each element included in the flow rate / flow path switching valve 460 and the nozzle unit 470, and the installation modes of the room entry detection sensor 402, the human body detection sensor 403, and the seating detection sensor 404 are exemplified. It is not necessarily limited to a thing, It can change suitably.
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 source, 20 flow path, 21 1st nozzle flow path, 22 2nd nozzle flow path, 23 3rd nozzle flow path, 24 bypass flow path, 24a 1st bypass part, 24b 2nd bypass part , 100 Sanitary washing device, 200 toilet seat, 300 toilet lid, 310 transmission window, 400 casing, 401 power supply circuit, 402 entrance detection sensor, 403 human body detection sensor, 404 seating detection sensor, 405 control unit, 407 allowable power setting means, 409 Recessed portion, 431 Solenoid valve, 433 Incoming water temperature detection sensor, 435 Water temperature detection means, 440 Heat exchanger unit, 450 Electrolyzer unit, 460 Flow rate / flow path switching valve, 461 Rotor, 461c shaft, 462 Through hole, 463 Bypass Port, 464a first self-cleaning port, 464b second 2 self-cleaning ports, 465 stator, 465a stator, 465s surface, 466a first through hole, 466b second through hole, 467a first bypass communication port, 467b second bypass communication port, 468a first self Cleaning communication port, 468b second self-cleaning communication port, 469a first shelf, 469b second shelf, 469c third shelf, 470 nozzle unit, 473 cleaning nozzle, 474 water discharge unit, 474a first Water outlet, 474b Second water outlet, 474c Third water outlet, 476 nozzle motor, 478 nozzle cleaning chamber, 500 operation unit, 800 toilet bowl, 801 bowl

Claims (4)

A cleaning nozzle that has a water discharger and that cleans the user's body by spraying water from the water discharger;
A flow path for guiding water supplied from a water supply source to the washing nozzle;
An instantaneous heat exchanger for heating water provided in the flow path and supplied from the water supply source;
Water supply switching means for switching between water supply and water stoppage of the water supplied from the water supply source;
Water temperature detecting means for detecting the temperature of the water heated by the instantaneous heat exchanger;
A flow rate adjusting means provided in the flow path and capable of adjusting a flow rate of water flowing in the flow path to any one of a first flow rate and a second flow rate less than the first flow rate;
Instruction means for instructing an operation of cleaning the body of the cleaning nozzle;
When the instruction unit instructs the operation, the water supply switching unit and the flow rate adjusting unit are controlled to start water supply to the flow path at any one of the first flow rate and the second flow rate, a control unit for executing a first hot water preparation step of raising the temperature of the interior of the water to a first predetermined temperature of the flow path sensed by the control to the coolant temperature detecting means the instantaneous type heat exchanger ,
A permissible power setting means for setting a permissible power to any one of a first set power and a second set power lower than the first set power;
With
When the allowable power setting means sets the allowable power to the first set power, the control unit executes the first hot water preparation step at the first flow rate,
When the allowable power setting means sets the allowable power to the second set power, the control unit executes the first hot water preparation step at the second flow rate. Sanitary washing device to do. It further comprises detection means for detecting the user,
Wherein, when said detecting means detects the user, the water supply switching means and the controls the flow rate adjusting means to start the water supply to the flow path, wherein by controlling the instantaneous type heat exchanger A second hot water preparation step of raising the temperature of the water in the flow path detected by the water temperature detection means to a second specified temperature,
When the allowable power setting means sets the allowable power to the first set power, the second hot water preparation in which the flow rate of water flowing through the flow path is adjusted to the first flow rate Perform further steps,
When the allowable power setting means sets the allowable power to the second set power, the second hot water preparation in which the flow rate of water flowing through the flow path is adjusted to the second flow rate claim 1 Symbol placement of the sanitary washing apparatus, characterized in that it further executes the steps. It further comprises an incoming water temperature detection sensor for detecting the temperature of water supplied to the instantaneous heat exchanger,
When the temperature detected by the incoming water temperature detection sensor is equal to or higher than a third specified temperature, the control unit is configured even when the allowable power setting means sets the allowable power to the second set power. The sanitary washing apparatus according to claim 2 , wherein at least one of the first hot water preparation step and the second hot water preparation step is executed at the first flow rate. A nozzle cleaning chamber for cleaning the cleaning nozzle;
The flow path is
A main flow path provided on the upstream side of the flow rate adjusting means;
A first bypass channel provided downstream of the flow rate adjusting means and supplying water to the nozzle cleaning chamber;
A second bypass passage provided downstream of the flow rate adjusting means and supplying water to the nozzle cleaning chamber and having an inner diameter smaller than an inner diameter of the first bypass passage;
Have
The flow rate adjusting means can switch the connection of the flow path,
When the allowable power setting means sets the allowable power to the first set power, the control unit controls the flow rate adjusting means to control the main flow path and the first bypass flow path. Communicate
When the allowable power setting means sets the allowable power to the second set power, the control unit controls the flow rate adjusting means to control the main flow path and the second bypass flow path. The sanitary washing device according to any one of claims 1 to 3, wherein

Images