JP6212711B2 - Sanitary washing device - Google Patents

Description

  The present invention relates to a sanitary washing apparatus that detects emptying with a temperature sensor in a hot water tank.

  Conventionally, in this type of sanitary washing apparatus, at the start of energization of the hot water heater immediately after the power is turned on, ON / OFF energization of energization and deenergization is performed a plurality of times until the thermistor reaches the hot water set temperature in the hot water tank. By installing a sequence that repeats, the hot water heater's heat is transmitted to the thermistor via the heat dissipation member, regardless of the conditions and conditions under which the hot water tank is empty. It is possible to cut off the power supply to the heater, and also has a plurality of hot water set temperatures in the hot water tank, and an air blow detection temperature higher than the above-mentioned hot water set temperatures for each of the set temperatures, and thermistor detection If the temperature reaches the detection temperature after the energization of the hot water heater at the hot water set temperature in the hot water tank, until the return operation is performed, There is to cut off the power supply to the serial water heater (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 2004-3228

  However, in the above-described conventional configuration, when the air-watering detection temperature is reached, after the air-watering abnormality determination, the water supply operation to the hot water tank cannot be performed until the temperature in the hot water tank cools down, and it takes time until it can be used. was there.

  An object of the present invention is to solve the above-mentioned conventional problems, and to provide a sanitary washing apparatus that can perform a water supply operation immediately and is easy to use even after the airing abnormality determination.

  In order to solve the conventional problems, a sanitary washing device of the present invention includes a toilet seat, a washing means for washing a human body part, a hot water tank unit for supplying warm water to the washing means, and a control means for controlling the entire product. A hot water tank that stores hot water, a hot water heater, a temperature sensor, and the hot water heater and the temperature sensor that are in contact with each other to heat the hot water heater. The control means is configured to allow at least the temperature detected by the temperature sensor to reach the set temperature of the hot water in the hot water tank at the start of energization of the hot water heater immediately after turning on the power. Energization and ON / OFF energization of energization interruption are repeated several times, and after energization interruption of the hot water heater, the hot water set temperature in the hot water tank If the temperature detected by the temperature sensor rises above a specific temperature in a low temperature range, it is determined that the hot water tank is empty, the energization of the hot water heater is stopped, and an abnormal indication is displayed from the display unit. To do.

  As a result, when the hot water temperature in the hot water tank is a low temperature close to the set temperature, the hot water detection is detected, the hot water heater is de-energized, and an abnormal display is displayed on the display unit. Can encourage you to be. In addition, it is possible to provide a sanitary washing apparatus that can perform an air blow abnormality determination before the temperature becomes high, and can perform a water supply operation to the hot water tank immediately after the air blow abnormality determination and is easy to use.

  The sanitary washing device of the present invention can be used without sacrificing usability because it can immediately perform a water supply operation even after the determination of the airing abnormality.

The perspective view which shows the external appearance of the sanitary washing apparatus in Embodiment 1 of this invention. The perspective view of the state which removed the upper case of the main body of the sanitary washing apparatus in Embodiment 1 of this invention The perspective view which shows the external appearance of the hot water tank unit in Embodiment 1 of this invention The fragmentary sectional view of the hot water tank unit in Embodiment 1 of the present invention The enlarged view of the heat radiating member part of the hot water tank unit in Embodiment 1 of this invention The figure which shows the hot water heater surface temperature at the time of repeating ON-OFF electricity supply for the predetermined time in Embodiment 1 of this invention The figure which shows the hot water heater surface temperature at the time of continuing energizing in Embodiment 1 of this invention always The flowchart of the control means in Embodiment 1 of this invention The flowchart of the control means in Embodiment 1 of this invention

  The first invention comprises a toilet seat, a cleaning means for cleaning a local body part, a hot water tank unit for supplying hot water to the cleaning means, a control means for controlling the entire product, an operation part, and a display part, The hot water tank unit includes a hot water tank for storing hot water, a hot water heater, a temperature sensor, and a heat radiating member that contacts the hot water heater and the temperature sensor with each other to conduct heat from the hot water heater to the temperature sensor. When the energization of the hot water heater is started immediately after the power is turned on, the control means performs energization and deenergization ON / OFF multiple times at least until the temperature detected by the temperature sensor reaches the hot water set temperature in the hot water tank. Repeatedly, after the energization of the hot water heater is cut off, the temperature sensor is connected to the temperature sensor in a temperature region lower than the hot water set temperature in the hot water tank. If the detected temperature that was raised certain temperature or higher, it is determined that the hot water tank is fired empty, stop the energization of the hot water heater, a sanitary washing device for the abnormality display from the display unit.

  As a result, even when a situation that causes air blow abnormality is detected, the hot water heater is shut off when the hot water temperature detected by the temperature sensor is low until the temperature is close to the set temperature. The user can be urged to be abnormal. In addition, it is possible to provide an easy-to-use sanitary washing apparatus that can perform an air blow abnormality determination at a safe low temperature before the temperature becomes high, and can immediately perform a water supply operation to the hot water tank even after the air blow abnormality determination.

  According to a second aspect of the present invention, in the first aspect of the invention, the hot water tank is configured to supply water from the outside through a water stop valve, and the control means controls the water stop valve by a cleaning operation of the operation unit. After opening, the hot water heater is energized and controlled by delaying the predetermined time, so that when the hot water tank starts submerging from the hot water tank air condition, the hot water heater is energized and then the hot water heater is energized. An adverse effect on the hot water tank due to the radiant heat of the heater can be prevented.

  According to a third aspect of the present invention, in particular, in the first or second aspect of the invention, the control means causes the temperature sensor to reach a hot water set temperature in the hot water tank at the start of energization of the hot water heater immediately after turning on the power. Even when the hot water tank is empty, the heat of the hot water heater is heated via the heat dissipation member by shortening the ON time of the hot water heater that repeats ON / OFF energization several times repeatedly. Transmission delay transmitted to the sensor can be prevented, and the hot water heater can be prevented from becoming too hot.

According to a fourth aspect of the invention, in particular, in the second aspect of the invention, the control means determines that the inside of the hot water tank is empty and stops energization of the hot water heater, and after displaying an abnormality on the display unit, By using the configuration that releases the watering error and opens the water stop valve by washing operation of the operation unit, after the watering abnormality is determined, the water supply operation to the hot water tank cannot be performed until the temperature in the hot water tank cools down. It does not take time until it can be made, and after the air blow abnormality determination, it takes no time and can immediately supply water to the hot water tank and use it.

  In a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, the temperature range in which the control unit starts the control for determining the emptying is such that the temperature detected by the temperature sensor is higher than the set temperature of the hot water. Only when the temperature is lower than the specified temperature, the hot water temperature in the hot water tank after the airing abnormality determination can be made lower than the hot water set temperature, and it is safe to immediately supply water to the hot water tank. It can be used without impairing usability.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a perspective view of the appearance of the sanitary washing apparatus according to the present embodiment in a state where the sanitary washing apparatus is installed on a toilet, and FIG. 2 shows a perspective view of the sanitary washing apparatus with its cover removed.

<1> Configuration of Sanitary Washing Device As shown in FIG. 1, the sanitary washing device 100 includes a main body 200, a toilet seat 300, and a toilet lid 400, and is installed on the upper surface of the toilet bowl 110.

  In this embodiment, the installation side of the main body 200 of the sanitary washing device 100 is the rear, the installation side of the toilet seat 300 is the front, the right side is the front side, the right side is the front side, and the left side is the left side. The arrangement will be described.

  A toilet seat 300 and a toilet lid 400 are attached to the main body 200 via a turning mechanism so as to be opened and closed. As shown in FIG. 1, when the toilet lid 400 is opened, the toilet lid 400 stands up so as to be positioned at the rearmost part of the sanitary washing device 100, and when the toilet lid 400 is closed, the upper surface and the main body of the toilet seat 300 are disposed. Part of 200 is concealed. As shown in FIG. 1, the toilet seat 300 stands on the front surface of the main body in the same manner as the toilet lid 400 from the state where it is placed on the upper surface of the toilet 110.

  A seating sensor 201 is installed on the front surface of the main body 200. The seating sensor 201 is a non-contact seating sensor and is a reflective infrared sensor. That is, when the light receiving unit detects infrared light emitted from the light emitting unit and reflected by the human body, it is detected that the user is seated on the toilet seat 300. Note that the seating sensor 201 is not limited to the infrared sensor, and may be another seating detection method such as a gravity type that is switched on by the weight of the seating or a capacitance type that is detected by a change in capacitance due to the seating.

  Further, a sleeve portion 210 is provided on the right side of the main body 200 so as to protrude forward, and an operation portion 211 is provided on the upper surface of the sleeve portion 210, and a plurality of operation switches for operating each function of the sanitary washing device. 212 and an indicator lamp 213 which is a display unit are installed.

As shown in FIG. 2, a cleaning nozzle 220 is installed in the center of the main body 200, and a deodorizing device 230 and a control unit 240 are installed on the left side of the main body 200. A cleaning water supply mechanism 250 and a hot water tank unit 500 are installed on the right side of the main body 200. The cleaning nozzle 220 and the cleaning water supply mechanism 250 constitute cleaning means for cleaning the local body part.

  The hot water tank unit 500 is connected to the cleaning nozzle 220, and the hot water tank unit 500 heats the cleaning water supplied from the water pipe through the cleaning water supply mechanism 250 having the water stop valve 12 (not shown), Hot water is supplied to the cleaning nozzle 220, and the hot water is ejected from the cleaning nozzle 220 toward the user's local area to clean the user's local area.

  The cleaning nozzle 220 has a butt cleaning nozzle section that cleans the buttocks and a bidet cleaning nozzle section that cleans women's local areas. The cleaning nozzle 220 protrudes from the main body 200 and the storage position where the cleaning nozzle 220 is accommodated in the main body 200. Drive means (not shown) that moves forward and backward between the cleaning positions for performing cleaning, and a switching valve (not shown) for supplying cleaning water from the hot water tank unit 500 to the buttocks cleaning nozzle portion and the bidet cleaning nozzle portion. ) Etc. are integrated.

  The deodorizing device 230 has an air inlet on the bottom surface of the main body 200 in order to suck the odor in the toilet 110.

  A control unit 240, which is a control unit that controls the entire sanitary washing device, controls the operation of each unit of the sanitary washing device 100 based on the operation signal of the operation switch 212 arranged on the operation unit 211 and the signal transmitted from the seating sensor 201. Control.

  In the sanitary washing device according to the present embodiment, the operation unit 211 and the display unit 213 are installed on the sleeve portion 210 of the main body 200, but the remote control for transmitting and receiving signals to and from the main body 200 is performed by the operation unit 211 and the display unit 213. It may be one installed in a remote controller (not shown).

<2> Configuration of Hot Water Tank Unit FIG. 3 is a perspective view showing the appearance of the hot water tank unit, FIG. 4 is a partial sectional view schematically showing the configuration of the hot water tank unit, and FIG. The member part expanded sectional view is shown.

  As shown in FIG. 3, the hot water tank 510 of the hot water tank unit 500 is formed integrally by welding an upper member 511 and a lower member 512 formed of a resin material having an increased strength by adding glass fiber to ABS resin. is there.

  A water supply port 513 through which cleaning water flows is provided at the lower front part of the side surface of the hot water tank 510, and a water supply port 514 through which cleaning water is supplied is provided at the upper rear side. Further, a vacuum breaker 520 for introducing air from the outside when the pressure in the tank becomes negative is installed on the upper surface of the hot water tank 510.

  A U-shaped sheathed heater 530 is installed near the bottom surface 515 of the lower part of the hot water tank unit 500 as a hot water heater that is a heating means for heating the cleaning water, and the hot water temperature is detected near the sheathed heater 530. A thermistor 502 (FIG. 4) is installed as a temperature sensor.

  In addition, a drain valve 540 that can discharge all the water in the tank is installed at the lowest position of the bottom surface 515 of the hot water tank 510, and the drain valve 540 is directed obliquely downward from the front of the hot water tank 510. It is installed. The drain valve 540 is used for preventing freezing in a cold region or discharging polluted water when not used for a long time.

As shown in FIG. 4, the hot water tank unit 500 includes a hot water tank 510 that stores hot water, a hot water heater 530, a thermistor 502, and a heat radiating member 503 that conducts heat from the hot water heater 530 to the thermistor 502. The control unit 240 is a control unit. An example of the configuration of the heat radiating portion is shown in FIG. 5, and the hot water heater 530, the heat radiating member 503, and the thermistor 502 are in contact with each other. Although the three parts are in contact with each other in the hot water tank 510, depending on the shape of the heat radiating member 503, the heat of the hot water heater 530 may be conducted to the thermistor 502 via the heat radiating member 503 outside the hot water tank 510. Is possible. In addition, a means for directly contacting the hot water heater 530 and the thermistor 502 without conducting the heat radiating member 503 to conduct heat can be considered. Here, the surface material of the hot water heater 530, the heat dissipating member 503, and the thermistor 502 is C1220 in order to prevent corrosion and not cause a potential difference between the parts. However, in some cases, the three parts do not need to be made of the same material. Not necessarily.

<3> Operation and action of sanitary washing apparatus The operation and action of the sanitary washing apparatus configured as described above will be described below.

  The controller 240 controls the hot water heater 530 so that the thermistor 502 detects the water temperature in the hot water tank 510 and reaches a predetermined set temperature. Normally, when water is in the hot water tank 510, the heat of the hot water heater 530 is dissipated into the water by the heat radiating member 503 before it is transmitted to the thermistor 502, so the thermistor 502 detects only the actual water temperature. Become. Here, even if the water in the hot water tank 510 is drained or the main body 200 is tilted, the control means 240 can control the hot water heater 530 because the heat of the hot water heater 530 is transmitted to the thermistor 502. Therefore, the hot water tank 510 is not burned out. In addition, when energization of the hot water heater 530 is started, ON-OFF energization is repeated a plurality of times for a predetermined time, so that when the thermistor detection temperature reaches the hot water set temperature in the hot water tank when the hot water tank 510 is empty. Since the surface temperature of the hot water heater 530 is lower than when the hot water heater 530 is always energized to reach the hot water set temperature in the hot water tank, the influence of the radiant heat of the hot water heater 530 on the hot water tank 510 is eliminated. 6 and 7 show the temporal relationship between the hot water heater surface temperature when ON-OFF energization is repeated a plurality of times for a predetermined time (FIG. 6) and when energization is always continued (FIG. 7). In addition, when the thermistor 502 detects the hot water set temperature in the hot water tank at the same temperature, both are basically when the heat capacity from the hot water heater 530 is received by the heat dissipation member 503. In order to receive the same capacity, if ON-OFF energization is performed a plurality of times for a predetermined time, it takes an extra α time, but the surface temperature of the β ° C. hot water heater is lowered.

FIG. 8 and FIG. 9 show control flowcharts of the control unit 240 which is a control means in the first embodiment. First, when the power of the sanitary washing apparatus is turned on as shown in the flowchart of FIG. 8, there is a possibility that the first energization may be installed immediately after purchase, and therefore 60 seconds have passed as shown in the step area of (A). After that, the water stop valve 12 (not shown) is opened.
Then, as shown in the step region of (B) of the flowchart, after the water stop valve is turned on, the temperature sensor waits for 30 seconds, which is a predetermined time during which the thermistor 502 as a temperature sensor is submerged.
After 30 seconds, the submerged thermistor 502 reaches the water temperature in the hot water tank 510 and is then input as the temperature of the hot water in the hot water tank 510 at that time, and the input temperature (X ° C.) is the set temperature −5 ° C. If it is a higher state, it waits until it falls to temperature lower than preset temperature-5 degreeC (step area | region of (C) of the flowchart of FIG. 9).

Then, as shown in the step region of (D) of the flowchart, the hot water heater 530 is set to 1. in a state where the input temperature (X ° C.) from the thermistor 502 as the temperature sensor is lower than the set temperature of −5 ° C. ON for 5 seconds and OFF for 8.5 seconds, and ON-OFF energization of energization and de-energization is repeated a plurality of times until the thermistor 502 as a temperature sensor reaches the hot water set temperature in the hot water tank 510. If the input temperature (X ° C.) before the start of energization to the hot water heater 530 is increased by 5 ° C. during the multiple ON-OFF energizations, it is determined that the hot water tank 510 is empty. It is determined that the hot water heater 530 is energized, and the hot air heater 530 is turned off, and an error display (error display) is displayed on the display unit 213.

  As can be seen from (C) and (D) of this step region, when energization of the hot water heater 530 is started immediately after the power is turned on, the hot water temperature detected by the thermistor 502 as a temperature sensor is lower by 5 ° C. or more than the set temperature. If the temperature is not in a state, the energization to the hot water heater 530 is not started, and the input temperature (X ° C.) before the energization of the hot water heater 530 is started while the energization and the energization interruption are repeated a plurality of times. ) Is not started due to whether the temperature rises by 5 ° C.

  Therefore, even if it is determined that the air blower is abnormal, the hot water heater 530 is shut off in a state where the hot water temperature detected by the thermistor 502 as a temperature sensor is a low temperature close to the set temperature, and the display unit 213 is aired. Because of the abnormal display (error display), the hot water in the hot water tank 510 does not become hot enough to touch the human body and immediately opens the water stop valve to supply water to the hot water tank Is possible.

  In addition, in the case of making an air blow determination at the start of energization of the hot water heater 530 immediately after the power is turned on, a temperature sensor that detects the hot water temperature of the hot water tank 510 as can be seen from (D) in the step region of FIGS. From the state in which the input temperature (X ° C) from a certain thermistor 502 is lower than the set temperature of −5 ° C., the hot water heater 530 is turned ON for 1.5 seconds and turned ON / OFF for 8.5 seconds 6 times. If the temperature detected by the thermistor 502, which is a temperature sensor, rises by 5 ° C. from the input temperature (X ° C.) until it is repeated, it is determined that the air blower is abnormal.

  For example, in the installation immediately after purchase, when the power supply is turned on and a trial operation is attempted in a state where the main tap of the water supply has been forgotten to open, water is not contained in the hot water tank 510, so that the hot water heater 530 is energized in a short time. The temperature detected by the thermistor 502, which is a temperature sensor, is changed to the input temperature (X ° C.) until the temperature sensor 502 is heated up and the hot water heater 530 is turned ON for 1.5 seconds and turned ON / OFF for 8.5 seconds six times. ) Rises by 5 ° C., resulting in an abnormal airing, the energization of the hot water heater 530 is stopped, and an error in the airing abnormality is displayed on the display unit 213.

  Further, even if the degree of opening of the water tap is too small, or the water in the hot water tank 510 is drained, for example, a part of the hot water heater 530 is soaked in water a little, the hot water heater 530 is energized. Then, the temperature sensor 502 is heated in a short time, and the temperature detected by the thermistor 502 as the temperature sensor is repeated until the hot water heater 530 is turned ON for 1.5 seconds and turned ON and OFF for 8.5 seconds six times. The temperature rises by 5 ° C. from the input temperature (X ° C.), and the hot water heater 530 is energized. The hot water heater 530 is de-energized, and the hot air heater error is displayed on the display unit 213.

When the hot water heater 530 is submerged or when the hot water tank 510 is full, when the hot water heater 530 is energized, the temperature sensor 502 is heated in a short time, and the hot water heater 530 is turned on for 1.5 seconds. The temperature detected by the thermistor 502, which is a temperature sensor, does not rise by 5 ° C from the input temperature (X ° C) until the ON-OFF energization that is turned ON and turned OFF for 8.5 seconds is repeated 6 times. Instead, the temperature is controlled in the normal temperature control mode so as to reach the set temperature by continuous energization that is not the ON-OFF energization.
Note that the absolute values of the ON time and the OFF time of the above 1.5 seconds ON and 8.5 seconds OFF are not limited to these, and the optimum values differ depending on the input wattage of the hot water heater 530 and the like. However, by repeating ON-OFF energization with the OFF time shorter than the ON time, the temperature of the hot water heater 530 has no problem due to the transmission delay to the temperature sensor 502 via the heat radiating member 503 even in the case of idling. Since the hot water heater 530 is shut off when the temperature of the hot water detected by the thermistor 502, which is a temperature sensor, is low up to the vicinity of the set temperature, the hot water in the hot water tank 510 has a high temperature that causes a problem when touching the human body. It is possible to immediately open the water stop valve and supply water to the hot water tank.
As described above, the first embodiment includes the toilet seat 300, the cleaning means 220 that cleans the human body part, the hot water tank unit 500 that supplies hot water to the cleaning means 220, the control means 240 that controls the entire product, An operation unit 211 and a display unit 213 are provided, and the hot water tank unit 500 includes a hot water tank 510 that stores hot water, a hot water heater 530, a temperature sensor 502, and the hot water heater 530 and the temperature sensor 502 that are in contact with each other. The heat control unit 240 includes a heat dissipating member 503 that conducts heat from the temperature sensor 502 to the temperature sensor 502. When the energization of the hot water heater 530 is started immediately after the power is turned on, at least the temperature detected by the temperature sensor 502 is the hot water set temperature in the hot water tank 510. Repeatedly turn on and off the power supply several times before reaching After the power supply to the heater 530 is cut off, if the temperature detected by the temperature sensor 502 rises above a specific temperature (5 ° C.) in a temperature range lower than the hot water set temperature in the hot water tank 510, the hot water tank is empty. It is determined that the hot water heater 530 is not energized, and an abnormality is displayed from the display unit 213.

  As a result, when the hot water temperature in the hot water tank 510 is a low temperature close to the set temperature, the hot water detection is performed, the energization of the hot water heater 530 is stopped, and the abnormality is displayed on the display unit 213. Can be urged to be abnormal. In addition, it is possible to provide a sanitary washing apparatus that can perform an air blow abnormality determination before the temperature becomes high, and can perform a water supply operation to the hot water tank immediately after the air blow abnormality determination and is easy to use.

  By the way, the abnormal display (error display) by the display unit 213 blinks an LED different from other abnormal states (it may be lit or the same LED may be changed in the blinking cycle), and the user has water in the hot water tank. It is configured to notify that there is no entry. If a liquid crystal display unit is installed instead of an LED, an abnormal display (error display) can be displayed with characters and error codes, and the error caused can be displayed more easily.

In the step region (C), whether or not the input temperature (X ° C.) is lower than the set temperature −5 ° C. In the first embodiment, all of these are set to 5 ° C. as to whether or not the input temperature (X ° C.) has risen by 5 ° C., but is not limited to 5 ° C. Depending on the wattage of the hot water heater and the volume of the hot water tank, 4 ° C. or 6 ° C. may be optimal. What is necessary is that the condition for starting the idling determination control is “whether the input temperature (X ° C.) is lower than the set temperature by a specific temperature”, and the condition for determining idling is “input temperature ( Whether or not the specific temperature has risen from X ° C).
When the input temperature (X ° C.) is lower than the set temperature by the specified temperature, the air blow determination control is started, that is, the ON / OFF energization of the hot water heater 530 is started a plurality of times, and the specified temperature is determined from the input temperature (X ° C.). Even when the hot water heater 530 is turned off by determining that the hot water heater 530 is turned off when the temperature rises, the hot water temperature detected by the thermistor 502 as a temperature sensor is near the set temperature. Therefore, it is possible to immediately supply the water to the hot water tank by opening the water stop valve.

In addition, “at the start of energization of the hot water heater 530 immediately after turning on the power” is not limited to the case of turning on the power after installation immediately after purchase, for example, the sanitary washing device is turned off for a long-term absence, There may be various cases such as when the power is turned on again, or when the sanitary washing device is turned off due to a water supply interruption or the like and then turned on again. In any case, the hot water detection in the state where the hot water temperature in the hot water tank 510 is a low temperature close to the set temperature is detected, the energization of the hot water heater 530 is stopped, and the display unit 213 displays an abnormality. Can prompt the user to be abnormal. In addition, it is possible to determine the airing abnormality before the temperature becomes high, and even after the airing abnormality determination, the water supply operation can be performed immediately on the hot water tank, which is convenient.

In addition, the sanitary washing device according to the first embodiment is configured to supply water from the outside to the hot water tank 510 through the water stop valve as described in the step region of (B) in the flowchart of FIG. The means 240 opens the water stop valve by a cleaning operation of the operation unit 211, and then delays a predetermined time (30 seconds) to control the energization of the hot water heater 530, thereby supplying water to the hot water tank 510 from the hot water tank air condition. When the heating is started, the hot water heater 530 is submerged and then the hot water heater 530 is energized. Therefore, adverse effects on the hot water tank 510 due to the radiant heat of the hot water heater 530 can be prevented.
Here, the predetermined time to wait until the energization of the hot water heater 530 is started after the water stop valve is opened by the cleaning operation of the operation unit 211 is not limited to 30 seconds, and the water stop valve is opened. It suffices if the time is enough for the hot water heater 530 and the thermistor 502 as the temperature sensor to be submerged later.

  Further, in the sanitary washing device of the first embodiment, the control unit 240 determines that the inside of the hot water tank 510 is empty, stops energization of the hot water heater 530, and displays an abnormality on the display unit 213. In this configuration, the watering error is canceled by the cleaning operation of the operation unit 211, and the water stop valve is opened, so that the water supply operation to the hot water tank 510 cannot be performed until the temperature in the hot water tank cools after the air blowing abnormality is determined. It does not take time until it can be used, and after the airing abnormality determination, the water supply operation to the hot water tank can be performed immediately without taking time.

  Further, in the sanitary washing device of the first embodiment, as described in the step regions (C) and (D) of the flowchart of FIG. 9, the temperature region where the control unit 240 starts the control for making the emptying determination is as follows. Only when the temperature detected by the temperature sensor 502 is a specific temperature lower than the set temperature of the hot water, the temperature of the hot water in the hot water tank after the airing abnormality determination can be made lower than the set temperature of the hot water. Even if the tank 510 is supplied with water, it is safe and can be used without impairing usability.

  As described above, the sanitary washing device according to the present invention can be used immediately without losing usability even after the airing abnormality determination, so that it can be used without impairing usability. It can also be applied to other hot water supply devices equipped with a heater.

12 Stop valve 100 Sanitary washing device 200 Main body 211 Operation part 213 Display part (indicator light)
220 Cleaning means (cleaning nozzle)
240 Control means (control unit)
300 Toilet seat 500 Hot water tank unit 502 Temperature sensor (thermistor)
503 Heat dissipation member 510 Hot water tank 530 Hot water heater (seeds heater)

Claims (5)

A toilet seat, a cleaning means for cleaning a local body part, a hot water tank unit for supplying warm water to the cleaning means, a control means for controlling the entire product, an operation part, and a display part,
The hot water tank unit includes a hot water tank for storing hot water, a hot water heater, a temperature sensor, and a heat radiating member that contacts the hot water heater and the temperature sensor to conduct heat of the hot water heater to the temperature sensor. Become
When the energization of the hot water heater is started immediately after the power is turned on, the control means repeats ON / OFF energization of energization and deenergization several times until at least the temperature detected by the temperature sensor reaches the set temperature of the hot water in the hot water tank. When the temperature detected by the temperature sensor rises above a specific temperature in a temperature range lower than the set temperature of the hot water in the hot water tank after the energization of the hot water heater is cut off, the hot water tank is empty. A sanitary washing device that determines that the hot water heater is energized, stops energization of the hot water heater, and displays an abnormality from the display unit. The hot water tank is configured to supply water from the outside through a water stop valve, and the control means opens the water stop valve by a cleaning operation of the operation unit and then delays the hot water heater by a predetermined time. The sanitary washing device according to claim 1 which controls energization. The control means is configured to repeat ON / OFF energization of energization and de-energization a plurality of times until the temperature sensor reaches a set temperature of warm water in the warm water tank at the start of energization of the warm water heater immediately after turning on the power. The sanitary washing device according to claim 1 or 2, wherein the ON time is shorter than the OFF time. The control means determines that the inside of the hot water tank is empty, stops energization of the hot water heater, displays an abnormality on the display unit, and then cancels the emptying error by a cleaning operation of the operation unit. The sanitary washing device according to claim 2, wherein the water stop valve is opened. The temperature range in which the control means starts the control for determining the airing is limited to the case where the temperature detected by the temperature sensor is lower than the set temperature of the hot water in the hot water tank by a specific temperature. A sanitary washing device according to claim 1.

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