JP2018000349A - Toilet seat device - Google Patents

Abstract

[PROBLEMS] To appropriately monitor power consumption of a heater while suppressing an increase in size of the apparatus.
An actual power consumption P of a hot water heater is estimated based on a temperature change amount ΔT that is a deviation between a heater inlet temperature Tin and a heater outlet temperature Tout (S180), and the actual power consumption P is equal to or greater than an upper limit power consumption Pref. Sometimes, power supply to the hot water heater is stopped (S190, S250). Thereby, the power consumption of the hot water heater which requires comparatively big electric power can be monitored appropriately. Further, since the power consumption P of the hot water heater is estimated based on the heater inlet temperature Tin and the heater outlet temperature Tout from the temperature sensor used for controlling the hot water heater, the current sensor is used only for detecting the power consumption of the hot water heater. There is no need to provide.
[Selection] Figure 3

Description

  The present invention relates to a toilet seat apparatus having a heater that receives a supply of electric power from an AC power source and heats an object to be heated.

  Conventionally, what monitors the electric power consumption of a household appliance is known. For example, in Patent Literature 1, a current sensor and a control unit are provided in a relay outlet including a plurality of sockets and a plurality of switches that respectively control power feeding to the plurality of sockets. It describes what is detected by a corresponding current sensor and monitors the power consumption of each socket by a control unit. Patent Document 2 also includes a measurement function that measures the current flowing to the home appliance via the outlet using a hall element and transmits the measurement result to the outside through communication, and a function that disconnects and reconnects the outlet current. An embedded outlet is described. Furthermore, Patent Document 3 includes a current measuring instrument that measures the current flowing through the main breaker, and a current limiting adapter that connects both the outlet connected to the distribution breaker and the plug of the home appliance. It describes what the current limiting adapter limits the current to the home appliance when the measured current reaches a threshold value.

JP2015-119329A JP, 2015-216118, A JP 2009-011100 A

  However, in these technologies, since it is necessary to separately provide a sensor unit for measuring current and a control unit for restricting the supply of electric power to the home appliance based on the measurement result, the toilet seat device having a heater When applied to the system, the apparatus becomes larger and the cost increases.

  The toilet seat device of the present invention is mainly intended to appropriately monitor the power consumption of the heater while suppressing the enlargement of the device.

  The toilet seat apparatus of the present invention employs the following means in order to achieve the main object described above.

The toilet seat device of the present invention is
A toilet seat device having a heater that heats an object to be heated in response to power supply from an AC power source,
A switch for supplying and cutting off power from the AC power source to the heater;
A temperature sensor for detecting the temperature of the object to be heated;
Control means for controlling the switch so that the temperature to be heated approaches the target temperature;
With
The control means is means for estimating the actual power consumption of the heater based on the amount of temperature change of the temperature sensor, and limiting the supply of power to the heater based on the actual power consumption.
This is the gist.

  The toilet seat device according to the present invention includes a switch for supplying and shutting off electric power from an AC power supply to a heater, and a temperature sensor for detecting the temperature of the heater to be heated. The switch is controlled so as to approach. Then, the actual power consumption of the heater is estimated based on the amount of temperature change of the temperature sensor, and the supply of power to the heater is limited based on the actual power consumption. Thereby, the power consumption of the heater which requires comparatively big electric power can be monitored appropriately. For example, it is possible to suppress an excessive current from flowing through the heater before the breaker connected to the apparatus is shut off. Further, since the power consumption of the heater is estimated based on the temperature from the temperature sensor used for controlling the heater, there is no need to provide a current sensor only for detecting the power consumption of the heater, and the size and cost of the apparatus are increased. Increase can be suppressed. As a result, it is possible to appropriately monitor the power consumption of the heater while suppressing an increase in the size of the apparatus.

  In the toilet seat apparatus of the present invention, the control means may be means for restricting power supply to the heater when the actual power consumption is equal to or higher than a predetermined upper limit power consumption. If it carries out like this, it can suppress more reliably that a heater exceeds upper limit power consumption and consumes electric power. Here, when the actual power consumption is equal to or higher than the upper limit power consumption, the power supply to the heater may be stopped by turning off the switch.

  Further, in the toilet seat device of the present invention, the control means is means for turning on and off the switch in units of one cycle or half cycle of AC power output, and the switch is actually operated during the time required for the temperature change. When it is assumed that the switch is turned on in all cycles between the time required for the temperature change based on the actual turn-on count and the actual power consumption The temporary power consumption consumed by the heater may be estimated, and the power supply to the heater may be limited when the temporary power consumption is equal to or higher than a predetermined upper limit power consumption. In this way, the possibility that the power consumption of the heater will exceed the upper limit power consumption is predicted and the power supply to the heater is limited, so that the actual power consumption can be more reliably suppressed from exceeding the upper limit power consumption. Can do.

  Further, in the toilet seat device of the present invention, the control means is means for turning on and off the switch in units of one cycle or half cycle of AC power output, and the switch is actually operated during the time required for the temperature change. Counts the actual number of times of turning on, and sets the upper limit number of times the switch is turned on so that the power consumed by the heater is less than a predetermined upper limit power consumption based on the actual on number and the actual power consumption In addition, the switch may be a means for controlling the switch so as not to exceed the upper limit on number of times. If it carries out like this, it can suppress more reliably that the actual power consumption of a heater becomes more than upper limit power consumption.

  Here, the upper limit power consumption may be power consumed by the heater when a current corresponding to a current threshold flows to the heater whose resistance value is the lower limit value of the tolerance range. In this way, it is possible to suppress the current exceeding the current threshold value from flowing through the heater.

It is an external appearance block diagram which shows the external appearance of the toilet device containing the toilet seat apparatus 10 as one Example of this invention. 2 is a configuration diagram illustrating an outline of an electrical configuration of a toilet seat apparatus main body 20. FIG. 4 is a flowchart illustrating an example of a hot water heater control restriction process executed by a CPU 31 of the control device 30. It is explanatory drawing which shows a mode that the temperature of a tap water (washing water) changes with a heater entrance and a heater exit. It is explanatory drawing which shows the frequency | count (ON frequency | count n) where the heater switch 24 was turned on during required time (DELTA) t. It is explanatory drawing which shows the relationship between heater minimum resistance Rmin, electric current threshold value, and upper limit power consumption Pref.

  The form for implementing this invention is demonstrated using an Example.

  FIG. 1 is an external configuration diagram showing an appearance of a toilet device including a toilet seat device 10 as an embodiment of the present invention, and FIG. 2 is a configuration diagram showing an outline of an electrical configuration of a toilet seat device body 20. The toilet seat device 10 of the embodiment is configured as a warm water washing toilet seat that can wash a person's local area with warm water, and is installed on the upper surface of the toilet 1 as shown in FIG. 1, and includes a toilet seat device body 20 and a toilet seat device body. The toilet seat 12 is supported so as to be openable and closable with respect to the stool 20, the toilet lid 14 is supported so as to be openable and closable with respect to the toilet seat main body 20, and an operation unit 16 capable of various operations by the user.

  As shown in FIG. 2, the toilet seat apparatus body 20 includes a water supply path 21 that connects the water pipe and the cleaning nozzle 25, an on-off valve 22 that opens and closes the water supply path 21, and wash water (tap water) that flows through the water supply path 21. A warm water heater 23 for heating the heater, a heater switch (for example, triac) 24 for supplying and shutting off electric power from the AC power supply 5 to the warm water heater 23, a cleaning nozzle 25 attached to the end of the water supply channel 21, and a cleaning A flow rate adjusting valve 26 that adjusts the flow rate of the cleaning water supplied to the nozzle 25, temperature sensors 27 and 28 provided near the heater inlet and the heater outlet of the water supply channel 21, respectively, and a unit of cleaning water in the water supply channel 21 A flow rate sensor 29 that detects a flow rate per hour and a control device 30 that controls the entire apparatus are provided.

  The operation unit 16 includes, for example, a butt washing switch 16a for washing the butt with washing water, a bidet washing switch 16b used as a bidet, a stop switch 16c for stopping butt washing or bidet washing, and washing strength (washing). A washing strength adjustment switch 16d for adjusting the water flow), a hot water temperature adjustment switch 16e for adjusting the warm water temperature of the washing water, a toilet seat temperature adjustment switch 16f for adjusting the toilet seat temperature, and the like.

  The hot water heater 23 is a heater capable of instantaneously heating the cleaning water supplied to the cleaning nozzle 25, and has a rated output of about 1400W.

  Although not shown, the cleaning nozzle 25 has a plurality of nozzles including a buttocks cleaning nozzle and a bidet cleaning nozzle. A switching valve (not shown) for switching the supply destination of the cleaning water is provided between the flow rate adjusting valve 26 and the cleaning nozzle 25, and the cleaning water in the water supply passage 21 is selectively supplied to any of the plurality of nozzles by the switching valve. It can be done.

  The control device 30 is configured as a microprocessor with a CPU 31 as a center, and includes a ROM 32, a RAM 33, an input / output port (not shown) and the like in addition to the CPU 31. The control device 30 includes a heater inlet temperature Tin from the temperature sensor 27, a heater outlet temperature Tout from the temperature sensor 28, a flow rate Q from the flow sensor 29, operation signals from the operation switches 16a to 16f of the operation unit 16, and the like. It is input via the input port. From the control device 30, a drive signal to the on-off valve 22, a drive signal to the heater switch 24, a drive signal to the flow rate adjustment valve 26, and the like are output via an output port.

  Next, the operation of the toilet seat apparatus 10 configured as described above, particularly, the operation when the washing water in the water supply channel 21 is heated by the hot water heater 23 to perform washing and bidet washing will be described. When the butt washing switch 16a or the bidet washing switch 16b is turned on, the CPU 31 of the control device 30 first opens the on-off valve 22 and sets the flow rate adjustment valve 26 to the washing strength indicated by the washing strength adjustment switch 16d. Open at the corresponding opening. Subsequently, the heater inlet temperature Tin [° C.] from the temperature sensor 27, the heater outlet temperature Tout [° C.] from the temperature sensor 28, the flow rate Q [ml / min] from the flow sensor 29, and the operation from the hot water temperature adjustment switch 16e. Data necessary for control such as a signal is input, and a target temperature Ttg of cleaning water supplied to the cleaning nozzle 25 is set based on an operation signal from the hot water temperature adjustment switch 16e. Based on the heater inlet temperature Tin, the heater outlet temperature Tout, and the flow rate Q, the heater switch 24 is subjected to switching control so that the heater outlet temperature Tout becomes the target temperature Ttg. In this embodiment, the switching control is performed by turning on and off the heater switch 24 in units of a half cycle of the AC power supply output. For example, one cycle when a plurality of cycles are set to one cycle using an arithmetic expression including a feed forward term based on the heater input temperature Tin and the flow rate Q and a feedback term based on a deviation between the heater outlet temperature Tout and the target temperature Ttg. Can be performed by setting the number of times the heater switch 24 is turned on (on cycle).

  Next, a process for restricting the supply of electric power to the hot water heater 23 will be described. FIG. 3 is a flowchart showing an example of the hot water heater control restriction process executed by the CPU 31 of the control device 30. This routine is executed when the butt washing or the bidet washing is started.

  When the hot water heater control restriction process is executed, the CPU 31 of the control device 30 first inputs the flow rate Q of cleaning water from the flow rate sensor 29 (step S100). Subsequently, the heater inlet temperature Tin from the temperature sensor 27 is input (step S110), it is determined whether or not the input heater inlet temperature Tin has changed (step S120), and the heater inlet temperature Tin has not changed. If it determines, it will return to step S110 and will repeat the process of step S110, S120. This process is for determining whether or not new tap water introduced from the water pipe by opening the on-off valve 22 has reached the vicinity of the heater inlet. Specifically, since the temperature in the water supply channel 21 is different when new tap water is introduced from the water pipe and when it is not introduced, the current value of the heater input temperature Tin that is repeatedly input in step S110 This can be done by determining whether or not the deviation from the previous value is greater than or equal to a predetermined value. If it is determined in step S120 that the heater inlet temperature Tin has changed, a timer is started to start measuring the required time Δt and the heater switch 24 is turned on n (step S130).

  Next, the heater outlet temperature Tout from the temperature sensor 28 is input (step S140), and it is determined whether or not the input heater outlet temperature Tout has changed (step S150). If it determines with the heater exit temperature Tout not changing, it will return to step S140 and will repeat the process of step S140, S150. This process is for determining whether the tap water in the water supply channel 21 has reached from the vicinity of the heater inlet to the vicinity of the heater outlet. Specifically, when tap water is introduced into the water supply channel 21 with the hot water heater 23 turned on, the temperature rises in the vicinity of the heater outlet, so the current value of the heater outlet temperature Tout that is repeatedly input in step S140. This can be done by determining whether or not the deviation from the previous value is greater than or equal to a predetermined value. If it is determined in step S150 that the heater outlet temperature Tout has changed, the timer is stopped, the measurement of the required time Δt is completed, and the measurement of the number n of times that the heater switch 24 is turned on is completed (step S160).

  FIG. 4 is an explanatory diagram showing how the temperature of tap water (washing water) changes between the heater inlet and the heater outlet. The required time Δt is measured as the time required for the tap water in the water supply channel 21 to reach the vicinity of the heater outlet until it reaches the vicinity of the heater outlet. During this time, the washing water is heated from the heater inlet temperature Tin by the hot water heater 23. Heating is performed up to the heater outlet temperature Tout. The required time Δt may be estimated based on the flow rate Q per unit time of the cleaning water.

  FIG. 5 is an explanatory diagram showing the number of times the heater switch is turned on during the required time Δt (the number of times n is turned on). As shown in the figure, the heater switch 24 is turned on and off in half-cycle units of the AC power supply 5 with reference to the zero cross point of the AC voltage, and the number of ON times n is from the start of measurement of the required time Δt to the end. Each time the heater switch 24 is turned on, the value is incremented by one.

  Next, a temperature change amount ΔT is calculated by subtracting the heater inlet temperature Tin from the heater outlet temperature Tout (step S170), and the hot water heater 23 is based on the temperature change amount ΔT [° C.] and the flow rate Q [ml / min]. The actual power consumption P [W] is estimated (step S180). For the estimation of the actual power consumption P, for example, the relationship between the temperature change amount ΔT, the flow rate Q and the actual power consumption P is obtained in advance and stored in the ROM 32 as a map, and the temperature change amount ΔT and the flow rate Q are given. And the corresponding actual power consumption P is derived from the map. In the present embodiment, the actual power consumption P is derived using a map. However, the actual power consumption P may be derived by calculation using a well-known calculation formula that converts the temperature change amount into power.

  When the actual power consumption P is estimated in this way, the estimated actual power consumption P is compared with a predetermined upper limit power consumption Pref (step S190). When the actual power consumption P is less than the upper limit power consumption Pref, the on-time nf during full energization, which is the number of times the heater switch 24 is turned on when the hot water heater 23 is fully energized for the required time Δt, is calculated (step S200). The full energization power consumption Pf, which is the power consumed by the hot water heater 23 during full energization, is calculated by the following equation (1) using the on count n, actual power consumption P, and full energization on count nf (step S210). ). Here, in the present embodiment, the number of ONs n is counted every half cycle of the AC power supply output. Therefore, the number of ONs nf during full energization is obtained by multiplying the power supply frequency f of the AC power supply 5 by the required time Δt. It can be calculated by multiplying.

  Pf = P ・ nf / n (1)

  When the full energization power consumption Pf is thus calculated, it is determined whether or not the full energization power consumption Pf is less than the upper limit power consumption Pref (step S220). When the full energization power consumption Pf is less than the upper limit power consumption Pref, normal control that does not restrict the supply of power to the hot water heater 23 is selected (step S230), and the hot water heater control restriction process is terminated. On the other hand, when the full energization power consumption Pf is greater than or equal to the upper limit power consumption Pref, power restriction control for restricting the supply of power to the hot water heater 23 is selected (step S240), and the hot water heater control restriction process is terminated. Here, as the power limit control, for example, full energization of the hot water heater 23 is prohibited, that is, the heater switch 22 is turned on / off so that the number of times n is less than the number of on times nf during full energization at the same time as the required time Δt. This can be done.

  If the actual power consumption P is greater than or equal to the upper limit power consumption Pref in step S190, the supply of power to the hot water heater 23 is stopped (step S250), and the hot water heater control restriction process is terminated.

FIG. 6 is an explanatory diagram showing the relationship among the heater minimum resistance Rmin, the current threshold value, and the upper limit power consumption Pref. The upper limit power consumption Pref is the power consumed by the hot water heater when the current I corresponding to the current threshold flows to the hot water heater whose resistance value is the minimum value in the tolerance range (heater minimum resistance Rmin) (Pref = Rmin).・ It is defined as I ² ). For example, when the resistance value of the hot water heater 23 is 7.25 ± 8.5% [Ω] (heater minimum resistance Rmin = 6.63 [Ω]) and the current threshold of the home breaker is 15 A, 1492 [W ]. In the present embodiment, the power consumption of the hot water heater 23 is set such that the current higher than the current threshold does not flow through the hot water heater 23 from the lower limit power consumption (about 1000 [W]) to the upper limit power consumption Pref (1492 [W]. ]) That is slightly smaller than the power consumption (1380 [W]) is determined as the use range, and the upper limit power consumption Pref or more is determined as the non-use range.

  The toilet seat device 10 according to the embodiment described above estimates the actual power consumption P of the hot water heater 23 based on the temperature change amount ΔT that is the deviation between the heater inlet temperature Tin and the heater outlet temperature Tout, and based on the actual power consumption P. Thus, the supply of electric power to the hot water heater 23 is limited. Thereby, the power consumption of the hot water heater 23 which requires comparatively big electric power can be monitored appropriately. For example, it is possible to suppress the current exceeding the current threshold value from flowing through the hot water heater 23 before the breaker connected to the apparatus is shut off. Moreover, since the power consumption P of the hot water heater 23 is estimated based on the heater inlet temperature Tin and the heater outlet temperature Tout from the temperature sensors 27 and 28 used for controlling the hot water heater 23, the power consumption of the hot water heater 23 is detected. Therefore, it is not necessary to provide a current sensor only for the purpose, and an increase in size and cost of the apparatus can be suppressed. As a result, the power consumption of the hot water heater 23 can be appropriately monitored while suppressing an increase in the size of the apparatus.

  Further, the toilet seat device 10 of the embodiment consumes the upper limit power consumption Pref when the current corresponding to the current threshold flows through the hot water heater 23 whose resistance value is the minimum resistance value Rmin within the tolerance range. When the actual power consumption P of the hot water heater 23 is equal to or higher than the upper limit power consumption Pref, the supply of power to the hot water heater 23 is stopped, so that the current exceeding the current threshold is prevented from flowing through the hot water heater 23. can do.

  Furthermore, the toilet seat apparatus 10 according to the embodiment uses the actual power consumption P and the number of ONs n as the power consumed by the hot water heater 23 (full power consumption Pf) when it is assumed that the hot water heater 23 is fully energized. Thus, even if the actual power consumption P is less than the upper limit power consumption Pref, if the full energization power consumption Pf is greater than or equal to the upper limit power consumption Pref, the energization to the hot water heater 23 is limited (power Execute limit control). That is, since the possibility that the actual power consumption P of the hot water heater 23 becomes equal to or higher than the upper limit power consumption Pref is limited, the supply of electric power to the hot water heater 23 is limited. It can be suppressed more reliably.

  In the toilet seat apparatus 10 according to the embodiment, the flow rate Q per unit time of the wash water flowing through the water supply channel 21 is detected using the flow rate sensor 29, and based on the wash strength indicated by the wash strength adjustment switch 16d. The flow rate per unit time of the washing water may be estimated.

  In the toilet seat apparatus 10 of the embodiment, the heater switch 24 is turned on / off in units of half cycle of AC power output, but the heater switch 24 may be turned on / off in units of cycle of AC power output. In this case, since the heater switch (triac) 24 is turned on with the zero cross point as a reference and is automatically turned off when the next zero cross point passes, power is supplied to the hot water heater 23 in units of one cycle of the AC power output. When turned on, it is turned on once for each of the positive half wave and the negative half wave. Therefore, the number n of times of ON may be incremented by 1 every time the heater switch 24 is turned ON twice from the start to the end of the measurement of the required time Δt.

  In the toilet seat device 10 of the embodiment, even when the actual power consumption P is less than the upper limit power consumption Pref, the power consumption of the hot water heater 23 (the power consumption Pf during full energization) when it is assumed that the hot water heater 23 is fully energized. Is higher than the upper limit power consumption Pref, the heater switch 24 is controlled so that the hot water heater 23 is not fully energized (power limit control). For example, the actual power consumption P, the ON count n, and the upper limit power consumption Pref Based on the following equation (2), the upper limit ON number nref may be calculated, and the heater switch 24 may be controlled so as not to exceed the upper limit ON number nref in the same time as the required time Δt.

  nref = n ・ Pref / P… (2)

  In the toilet seat device 10 of the embodiment, the amount of temperature change is measured by measuring the time from when the heater inlet temperature Tin detected by the temperature sensor 27 changes until the heater outlet temperature Tout detected by the temperature sensor 28 changes. The time required for the temperature change of ΔT (= Tout−Tin) (required time Δt) was measured. However, while monitoring the change in the heater outlet temperature Tout detected by the temperature sensor 28, the time from when the heater outlet temperature Tout starts to change until the change converges may be measured as the required time Δt. In this case, the actual power consumption P of the hot water heater 23 can be estimated with the change amount of the heater outlet temperature Tout during the required time Δt as the temperature change amount ΔT.

  In the embodiment, the present invention has been described by applying the present invention to the control of the hot water heater 23 for heating the cleaning water supplied to the cleaning nozzle 25, but the present invention is not limited to this, and for heating the toilet seat 12. The present invention may be applied to control of any heater provided in the toilet seat device, such as application to the control of a toilet seat heater or the control of a drying heater for drying a wet part of a human body. In addition, when applying this invention to a toilet seat heater, the temperature sensor which detects the temperature (toilet seat temperature) of the toilet seat 12 is provided, and the change is made after the toilet seat temperature starts changing while monitoring the toilet seat temperature detected by the temperature sensor. Is measured as a required time Δt, and a temperature change amount ΔT during the required time Δt is obtained, and a toilet seat heater is calculated using a map or a calculation formula based on the temperature change amount ΔT and the required time Δt. The actual power consumption P can be estimated.

  The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problems will be described. In the embodiment, the hot water heater 23 corresponds to a “heater”, the heater switch 24 corresponds to a “switch”, the temperature sensors 27 and 28 correspond to “temperature sensors”, and the control device 30 corresponds to “control means”. To do.

  The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem is the same as that of the embodiment described in the column of means for solving the problem. Therefore, the elements of the invention described in the column of means for solving the problems are not limited. That is, the interpretation of the invention described in the column of means for solving the problems should be made based on the description of the column, and the examples are those of the invention described in the column of means for solving the problems. It is only a specific example.

  As mentioned above, although the form for implementing this invention was demonstrated using the Example, this invention is not limited at all to such an Example, In the range which does not deviate from the summary of this invention, it is with various forms. Of course, it can be implemented.

  The present invention can be used in the toilet seat manufacturing industry and the like.

  DESCRIPTION OF SYMBOLS 1 Toilet bowl, 5 AC power supply, 10 Toilet seat apparatus, 12 Toilet seat, 14 Toilet lid, 16 Operation part, 16a Wet washing switch, 16b Bidet washing switch, 16c Stop switch, 16d Washing strength adjustment switch, 16e Hot water temperature adjustment switch, 16f Toilet seat temperature control switch, 20 Toilet seat main body, 21 Water supply path, 22 On-off valve, 23 Hot water heater, 24 Heater switch, 25 Washing nozzle, 26 Flow rate adjustment valve, 27, 28 Temperature sensor, 29 Flow rate sensor, 30 Control device, 31 CPU, 32 ROM, 33 RAM.

Claims (5)

A toilet seat device having a heater that heats an object to be heated in response to power supply from an AC power source,
A switch for supplying and cutting off power from the AC power source to the heater;
A temperature sensor for detecting the temperature of the object to be heated;
Control means for controlling the switch so that the temperature to be heated approaches the target temperature;
With
The control means is means for estimating the actual power consumption of the heater based on the amount of temperature change of the temperature sensor, and limiting the supply of power to the heater based on the actual power consumption.
A toilet seat device. The toilet seat device according to claim 1,
The control means is means for restricting power supply to the heater when the actual power consumption is equal to or higher than a predetermined upper limit power consumption.
A toilet seat device. The toilet seat device according to claim 1 or 2,
The control means is means for turning on and off the switch in units of one cycle or half cycle of AC power supply output, and the actual number of times of turning on the switch during the time required for the temperature change is determined. Counting and estimating the temporary power consumption consumed by the heater when it is assumed that the switch is turned on in all cycles between the time required for the temperature change based on the actual number of times of on and the actual power consumption And means for limiting the supply of power to the heater when the temporary power consumption is equal to or higher than a predetermined upper limit power consumption.
A toilet seat device. The toilet seat device according to any one of claims 1 to 3,
The control means is means for turning on and off the switch in units of one cycle or half cycle of AC power supply output, and the actual number of times of turning on the switch during the time required for the temperature change is determined. Counting and setting the upper limit ON count of the switch that the power consumed by the heater is less than a predetermined upper limit power consumption based on the actual ON count and the actual power consumption, and does not exceed the upper limit ON count Means for controlling the switch,
A toilet seat device. The toilet seat device according to any one of claims 2 to 4,
The upper limit power consumption is the power consumed by the heater when a current corresponding to a current threshold flows to the heater with the resistance value being the lower limit value of the tolerance range.
A toilet seat device.

Images