KR100962679B1 - Apparatus for controlling of water heating in bidet and method thereof - Google Patents

Abstract

PURPOSE: A device and a method for controlling washing water heating of in a bidet are provided to provide a user with optimized washing water by controlling the washing water depending on a season. CONSTITUTION: A device for controlling washing water heating of in a bidet comprises an operation unit(110), a memory(120), a sensor unit(130), a controller(140), a washing water heating unit(150), a driving unit(160), and a power supply unit(170). The operation unit comprises a display unit, a mode selecting key, and a control key, and informs a user of the state of a bidet. The controller comprises a central processing unit, a MICOM, a microprocessor, and a main controller, and supplies washing water depending on a program selected by a user. The washing water heating unit heats the washing water by controlling a heater. The driving unit comprises a water discharging sensor and a sitting sensor which power a nozzle, a valve, and a power.

Description

Apparatus for controlling of water heating in bidet and method

The present invention relates to a washing water heating control in the bidet, more specifically, by changing the washing water heating control according to the season, washing water heating control of the bidet to always provide the user with hot water optimized even in the change of the surrounding environment according to the season An apparatus and a method thereof are provided.

In general, bidets are also called hot water washers, which are used to clean the anus and local areas of the human body.

The bidet is equipped with an anal rinsing function to clean the anus without toilet paper with washing water sprayed through the nozzle after seeing the toilet, and a local rinsing function for automatically washing the women's local parts with the washing water.

In a well-known bidet, hot water is used for washing, and the hot water is used to heat the washing water by using the instant hot water heating method. The washing water is heated by using the instant hot water heating method as described above. A hot water washer is disclosed in Japanese Patent Laid-Open No. 2003-27560 (published: 2003.01.29) (hereinafter, abbreviated as "the prior art").

According to the disclosed prior art, in order to minimize power consumption, increase energy consumption efficiency, and discharge hot water during use, a seating sensor is provided in the bidet, and when the user's seating is detected without the user's separate operation, the heating device is automatically In operation, the washing water is heated above a set temperature.

However, this conventional technique has the advantage that unnecessary power consumption in the air is not necessary because the heating operation of the washing water is not performed in the air, but if the seating is recognized without the user's separate operation without considering the seasonal environment, the washing water is unconditionally washed. Since the heating operation is automatically performed above the set temperature, power consumption is wasted, and the hot water temperature initially discharged according to the season may be different, which may cause inconvenience to the user.

For example, in a state in which the temperature of the washing water is fixed at one set temperature regardless of the season, when a user's seating is detected, the washing water is unconditionally heated to the set temperature so that the water temperature does not change little by season. For example, there is no problem for use in Europe, Russia, Africa, etc.), but in countries where the temperature changes in the four seasons are clear and the seasonally obtained temperatures are significantly different (for example, Korea, Japan, etc.) The initial hot water temperature is different, hot water (clean water) may feel hot in the summer, and hot water may be cold in the winter when the temperature of the water is low due to the low outside temperature, which is unpleasant to the user.

Accordingly, the present invention has been proposed to solve all the problems occurring in the prior art as described above,

The problem to be solved by the present invention is to provide a washing water heating control apparatus and method of the bidet to change the washing water heating control by season, to provide the user with always optimized washing water even with the change of the surrounding environment according to the season. There is.

Another object of the present invention is to provide a bidet washing water heating control apparatus and a method for reducing power consumption by minimizing standby power by shutting off the driving power of the bidet in the air.

"Bidet water heating control device" according to the present invention for solving the above problems,

A memory storing a plurality of control programs for differently controlling the washing water heating operation according to seasons; And

The control program corresponding to the set season is selected from a plurality of control programs stored in the memory according to a season set by a user or automatically set, and washing water heating control is performed according to the selected control program. And a control unit for controlling the corresponding washing water to be supplied.

Washing water heating control device of the bidet according to the present invention,

The apparatus may further include an operation unit provided with a mode selection key so that the user can set the season.

In the bidet washing water heating control apparatus according to the present invention, the control unit,

The inlet temperature sensor detects the inlet temperature by detecting the inlet temperature, and automatically sets the season based on the inlet temperature.

Washing water heating control device of the bidet according to the present invention,

The washing machine further includes a washing water heater configured to control the driving of the hot water heater under the control of the controller to heat the washing water.

Washing water heating control device of the bidet according to the present invention,

Further comprising a power supply for supplying the drive power and standby power of the bidet,

The control unit,

The power supply unit is controlled to cut off the driving power of the bidet, and when the user is sensed by a seating sensor, the power supply unit is selectively controlled so that driving power is supplied to the bidet through the power supply unit.

In addition, the "washing water heating control method of the bidet" according to the present invention,

A season determination process of determining a season when a seat is detected by a seat sensor in a standby state in which the hot water heater is turned off;

A control program withdrawing process for withdrawing a control program for washing water heating control corresponding to the determined season from a memory;

The washing water temperature adjustment process of controlling the temperature of the washing water by differentiating the control of the hot water heater according to the season based on the extracted control program.

The control program,

A summer control program set as a default and set to control a hot water heater in summer;

A spring / fall control program configured to control the hot water heater in spring and autumn;

It includes a winter control program set to control the hot water heater in winter.

The washing water temperature control process,

A summer temperature control process for controlling a hot water heater in summer;

A spring / autumn season temperature control process for controlling the hot water heater in spring / autumn season;

It includes a winter temperature control process for controlling the hot water heater in winter.

Preferably the summer temperature control process,

Performing a self-cleaning operation when the operation button is pressed, and heating the washing water by driving a hot water heater;

Performing a cleaning or bidet operation corresponding to the operation button when the self cleaning operation is completed;

When the cleaning or bidet operation is completed, turning off the driven hot water heater and performing a self cleaning operation.

In addition, the spring / autumn temperature control process,

Performing a self-cleaning operation when the operation button is pressed, and heating the washing water by driving a hot water heater;

Detecting a temperature of the heated washing water to determine whether a set temperature has been reached;

Performing a self-cleaning operation for a set time when the temperature of the washing water does not reach a set temperature;

Performing a cleaning or bidet operation corresponding to the operation button when the self-cleaning operation for the set time is completed or the temperature of the washing water reaches the set temperature;

When the cleaning or bidet operation is completed, turning off the driven hot water heater and performing a self cleaning operation.

In addition, the winter temperature control process,

When the user is detected by the seating sensor, driving the hot water heater to heat the washing water;

Performing a self-cleaning operation when the operation button is pressed, detecting a temperature of the heated washing water, and checking whether a set temperature has been reached;

Performing a self cleaning operation for a set time when the temperature of the washing water does not reach a set temperature;

Performing a cleaning or bidet operation corresponding to the operation button when the self-cleaning operation for the set time is completed or the temperature of the washing water reaches the set temperature;

When the cleaning or bidet operation is completed, turning off the driven hot water heater and performing a self cleaning operation.

According to the present invention described above, by changing the washing water heating control for each season, there is an advantage that the user always provides the optimized washing water even in the change of the surrounding environment according to the season.

In addition, according to the present invention, by blocking the drive power of the bidet in the standby to minimize the standby power, there is an advantage that can reduce the power consumption.

Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

1 is a block diagram showing the configuration of the "bide washing water heating control apparatus" according to the present invention, the operation unit 110, memory 120, sensor unit 130, control unit 140, washing water heating unit ( 150, the appliance driving unit 160, and the power supply unit 170.

The operation unit 110 is a state display unit for visually displaying the operation state of the bidet under the control of the control unit 140, a mode selection key provided to allow a user to set a season, and a plurality of controls for inputting an operation control command of the bidet. It includes a key and performs a function of inputting a user's command or notifying the user of a bidet situation through the data interface with the controller 140.

The memory 120 is a digital storage device that stores a plurality of control programs for controlling the washing water heating operation differently according to seasons, and preferably uses a flash memory to maintain stored data even when the power is turned off. It also saves the data generated during the control operation of the bidet.

Here, a plurality of control programs, the summer control program is set as a basic, to control the hot water heater in the summer, the spring / autumn control program is set to control the hot water heater in the spring and autumn, the hot water heater in winter Includes a winter control program set up to The plurality of control programs can be selected and used by the control unit 140 according to the user's season selection. Alternatively, the control program can automatically determine the season after detecting the intake temperature using the intake sensor, and respond accordingly. It is also possible to select and use a control program.

The controller 140 is a control device for controlling the entire operation of the bidet, and may be implemented as a general central processing unit, a microcomputer, a microprocessor, and a main controller, and controls a plurality of controls stored in the memory 120 according to a season set by a user. In the program, a control program corresponding to the set season is selected, and the washing water heating control is performed according to the selected control program to supply washing water corresponding to the season. In the present invention, the user selects a season will be described as a preferred embodiment.

The washing water heating unit 150 controls the operation of the hot water heater built in the water tank according to the control of the controller 140 to heat the washing water, and the controller 140 controls the memory 120. The hot water heater is controlled based on the pre-stored washing water set temperature and the detected value of the temperature sensor, and additionally, the hot water heater is controlled in parallel with the water discharge sensor.

The appliance driving unit 160 functions to drive various appliances provided in a general bidet, for example, a nozzle, a valve, a pump, and the like, and the sensor unit 130 is provided to a temperature sensor and a water tank for detecting the temperature of the washing water. It includes an inlet sensor for detecting the temperature of the incoming water, an outlet sensor for detecting the temperature of the outlet water delivered to the nozzle, a seating sensor for detecting whether the user is sitting on the bidet.

The power supply unit 170 performs a function of supplying driving power and standby power of the bidet, and supplies standby power only to the control unit 140 and the seating sensor during standby, and all the power supplies are required at the bidet during operation. It will supply driving power to the part.

The washing water heating device of the bidet according to the present invention configured as described above, the control unit 140 in a state in which the control program for controlling the hot water heater differently for each season (or for each acquisition temperature) in advance in the memory 120, When the user senses the control of the washing water heating while controlling the bidet operation.

That is, if there is no key input for a predetermined time by the operation unit 110 or the seat is not detected by the sensor unit 130, the controller 140 generates a control signal to the power supply unit 170 to control only the standby power supply. To maintain the standby state. In this standby state, the hot water heater remains off.

When the user is detected by the seating sensor in the standby state, the controller 140 controls the power supply unit 170 to supply power for driving to each part of the bidet, and is set by the mode selection key of the operation unit 110. The seasonal state is checked by searching for information stored in the memory 120. The seasonal state may be stored in advance in the memory 120 according to a user's request as described above. However, the seasonal state may be detected by using an intake sensor, and the season may be automatically determined using this. In the above, the seasons mean summer, spring / autumn, and winter. When the seasons are not selected by the user, the seasons are determined as the summer season.

When the season is preset by the user, or when the season is automatically determined by detecting the intake temperature, or when it is determined that the season is summer, the controller 140 recognizes one of the plurality of control programs stored in the memory 120. Withdraw the season's hot water heater control program.

Here, a plurality of control programs, the summer control program is set as a basic, to control the hot water heater in the summer, the spring / autumn control program is set to control the hot water heater in the spring and autumn, and the hot water heater in the winter It includes a winter control program set to control the.

In addition, by controlling the operation of the hot water heater according to the extracted control program, the user's discomfort caused by the actual discharge water temperature is changed by the difference in the water intake temperature caused by the change of the environment for each season.

For example, in the summer mode, which is the basic mode, since the outside temperature is high and the water temperature is relatively high (25 ° C. or more), the hot water heater is operated after the user presses the bidet or the cleaning operation button. When the hot water temperature is set, the initial discharge temperature operates slightly below the set temperature, but the user feels the temperature differently depending on the outside temperature, so even if the temperature of the initially discharged washing water is slightly below the set temperature. Since it does not feel cold at all, the user's discomfort can be eliminated. In this case, since the hot water heater that consumes a lot of power is operated after pressing the operation button, there is an advantage in that power consumption can be significantly reduced compared to the prior art.

In addition, in the spring / autumn season, since the outside air temperature is not so low that the inlet temperature is relatively low (20 ° C. or more), the hot water heater is operated after the user presses the bidet or the cleaning operation button. However, when the hot water temperature is set, in order to prevent the initial discharge temperature from reaching the set temperature much, if the hot water temperature is lower than the set temperature, the self-cleaning is performed for a maximum of 10 seconds. The discharge temperature is raised. According to the experiment, when the self-cleaning operation is performed for 10 seconds, when the set temperature is set to 40 ° C., the initial discharge temperature is 37 ° C., so even when the discharged washing water temperature is slightly below the set temperature, it does not feel cold at all. The user's discomfort can be eliminated. In this case, since the hot water heater that consumes a lot of power is operated after pressing the operation button, there is an advantage in that power consumption can be significantly reduced compared to the prior art.

In addition, in winter, since the outside temperature is low because the inlet temperature is lower (15 ° C or less), in this case, when the user detects the use of the bidet by the seating sensor, the hot water heater is operated to heat the washing water. In order to prevent the initial discharge temperature from falling below the set temperature when the hot water temperature is set, if the hot water temperature is lower than the set temperature, the self-cleaning is performed for a maximum of 10 seconds. Will raise. If the user drives the hot water heater in the detected state and performs self-cleaning for up to 10 seconds, when the set temperature is set to 40 ° C., the initial discharge temperature becomes 37 ° C. or more, and the temperature of the washing water discharged initially is set. Even slightly below the temperature does not feel cold at all, thereby removing the user's discomfort.

Specific preferred embodiments of controlling the operation of the hot water heater according to the seasons are illustrated in FIGS. 2A to 2C.

Figure 2a to 2c is a flow chart showing a washing water heating method of the bidet according to the present invention, the season determination process (S101 ~ S109) to determine the season when the seat is detected by the seating sensor in the standby state, the hot water heater is off And a control program drawing process (S111, S113, S201, S203, S301, S303) for drawing out a control program for washing water heating control corresponding to the determined season from the memory, and the season based on the extracted control program. The washing water temperature control process (S115 ~ S127, S205 ~ S219, S305 ~ S325) to control the temperature of the washing water to differentiate the control of the hot water heater according to.

Here, the control program is set by default, the summer control program set to control the hot water heater in summer, the spring / autumn control program set to control the hot water heater in spring and autumn, and the hot water heater in winter Includes a winter control program set to control.

The washing water temperature control process,

Summer temperature control process (S115 ~ S127) for controlling the hot water heater in summer, spring / autumn temperature control process (S205 ~ S219) for controlling the hot water heater in the spring / autumn, and control the hot water heater in winter Winter temperature control process for (S305 ~ S325) to include.

Preferably, in the summer temperature control process (S115 to S127), when the operation button is pressed, performing a self-cleaning operation, driving a hot water heater to heat the washing water (S115 to S117), and the self-cleaning operation is completed. When the cleaning or bidet operation is terminated in response to the operation button (S119 ~ S121), and when the cleaning or bidet operation is completed, turning off the driven hot water heater and performing a self-cleaning operation (S123 ~ S127) ).

In addition, the spring / autumn temperature control process (S205 ~ S219), performing the self-cleaning operation when the operation button is pressed, and heating the washing water by driving a hot water heater (S205 ~ S207), and the heated cleaning Detecting the temperature of the water and checking whether the set temperature has been reached (S207 to S209); and if the washing water temperature does not reach the set temperature, performing a self-cleaning operation for a set time (S211). And when the self-cleaning operation for the set time is completed or the temperature of the washing water reaches the set temperature, performing the washing or bidet operation corresponding to the operation button (S213) and the washing or bidet operation. When this is completed, the step of turning off the driven hot water heater and performing a self-cleaning operation (S215 ~ S219).

In addition, the winter temperature control process (S305 ~ S325), if the user is detected by the seating sensor to drive the hot water heater to heat the washing water (S305), and if the operation button is pressed to perform a self-cleaning operation, Detecting the temperature of the heated washing water and checking whether the temperature reaches the set temperature (S307 to S311), and when the temperature of the washing water does not reach the set temperature, performing a self-cleaning operation for a set time. In step S313, when the self-cleaning operation for the set time is completed or the temperature of the washing water reaches the set temperature, performing the washing or bidet operation corresponding to the operation button (S315 to S319); When the cleaning or bidet operation is completed, turning off the driven hot water heater and performing a self cleaning operation (S321 to S325).

Looking at the operation of the washing water heating device of the bidet according to the present invention made in this way as follows.

First, if a key operation does not occur for a predetermined time or a seat is not detected, the system (bidet) maintains a standby state under the control of the controller (S101).

If a key operation occurs in the standby state as in step S113, the process moves to step S105 to execute a command operated by the user (S105). Here, the operation command may be an operation command such as selecting a mode for controlling the hot water heater using a mode selection key (setting a season) or changing a control environment of another bidet.

If no key operation occurs in the standby state and the seating is sensed by the seating sensor as in step S107, the controller determines the season (S109). Here, the season determination is a method of automatically determining the season when the user sets the season using the mode selection key of the operation unit or the acquisition temperature is detected by the inlet sensor provided in the sensor unit. When the user does not select a mode, the season is automatically set as summer as the default mode. Here, when automatically determining the season, it is assumed that the data for determining the season according to the intake temperature is previously stored in the memory as a table.

When the season judgment is made, a control program for differentially controlling the hot water heater is withdrawn from the memory in response to the determined season. If the determined season is summer, as in step S111, the process moves to step S113 and Draw a control program for the summer. As is well known, a plurality of programs are stored in the memory for differentially controlling the hot water heater for each season.

In a state in which a control program for controlling the hot water heater in summer is drawn out, the hot water heater is controlled based on the control program.

That is, as in step S115, it is checked whether an operation button such as a wash or a bidet is pressed, and the self-cleaning operation is performed only when the operation button is pressed, and the washing water stored in the water tank is heated by driving a hot water heater. It is made (S117). Here, the self-cleaning operation is a general operation in the bidet, which is an action of self-cleaning.

Subsequently, when the self-cleaning is completed (S119), the selected washing or bidet operation is performed (S121). When the washing or bidet operation is completed, the driven hot water heater is turned off, and the self-cleaning operation is automatically performed. The control operation of the summer hot water heater is terminated (S123 to S127).

As such, in the summer, since the outdoor temperature is high and the water temperature is relatively high (above 25 ° C), even if the user operates the hot water heater after pressing the bidet or the washing operation button, the initial discharge temperature is slightly lower than the set temperature. Since it is in a state and does not feel cold at all, the user's discomfort can be removed. In this case, since the hot water heater that consumes a lot of power is operated after pressing the operation button, there is an advantage in that power consumption can be significantly reduced compared to the prior art.

Meanwhile, when the determined season is spring / autumn season, the hot water heater is controlled based on the control program while drawing a control program for controlling the spring / autumn hot water heater.

That is, as in step S205, it is checked whether an operation button such as a wash or a bidet is pressed, and the self-cleaning operation is performed only when the operation button is pressed, and the washing water stored in the water tank is heated by driving a hot water heater. It is made (S207). Here, the self-cleaning operation is a general operation in the bidet, which is self-cleaning.

Subsequently, it is checked whether the washing water reaches the set temperature (S209), and when the washing water does not reach the set temperature, the self cleaning operation is performed for a maximum of 10 seconds (S211). During the self-cleaning operation, the hot water heater operates to increase the initial discharge temperature.

When the self-cleaning operation is completed or when the temperature of the washing water (hot water) reaches the set temperature, the washing or bidet operation selected by the user is performed (S213). After turning off the hot water heater and automatically performing a self-cleaning operation, the control operation of the spring / autumn season hot water heater is terminated (S215 to S219).

As such, in the spring / autumn season, since the outside temperature is not so low and the inlet temperature is not relatively low (20 ° C. or more), the user operates the hot water heater after pressing the bidet or washing operation button. However, in order to prevent the initial discharge temperature from reaching the set temperature when the hot water temperature is set, the self-cleaning is performed for a maximum of 10 seconds only when the hot water temperature is lower than the set temperature. The initial discharge temperature is raised. According to the experiment, when the self-cleaning operation is performed for 10 seconds, when the set temperature is set to 40 ° C., the initial discharge temperature is 37 ° C., even though the temperature of the initially discharged washing water is slightly lower than the set temperature, it does not feel cold at all. Therefore, it is possible to remove the discomfort of the user. In this case, since the hot water heater that consumes a lot of power is operated after pressing the operation button, there is an advantage that the power consumption can be significantly reduced compared to the prior art.

Meanwhile, when the determined season is winter, the hot water heater is controlled based on the control program while drawing a control program for controlling the winter hot water heater.

That is, when the user is detected by the seating sensor as in step S305, the hot water heater is immediately driven to heat the washing water (S305). After checking whether an operation button such as a bidet or cleaning is pressed (S307), when the operation button is not pressed, the temperature of the washing water is detected by using a temperature sensor, and the temperature of the washing water reaches a set temperature. When the hot water heater is turned off automatically (S309 ~ S311).

If the washing water temperature does not reach the set temperature, when an operation button such as washing or bidet is pressed (S307), the first self-cleaning operation is performed (S313), and it is determined whether the washing water has reached the set temperature. Check (S315).

As a result of this check, when the washing water does not reach the set temperature, the second self cleaning operation is performed for a maximum of 10 seconds (S317). During the self-cleaning operation, the hot water heater operates to increase the initial discharge temperature.

When the self-cleaning operation is completed or when the temperature of the washing water (hot water) reaches the set temperature, the washing or bidet operation selected by the user is performed (S319). After turning off the hot water heater and automatically performing a self-cleaning operation, the control operation of the winter hot water heater is ended (S321 to S325).

As such, in winter, since the outside temperature is low and the inlet temperature is low (below 15 ° C.), in this case, when the user detects the use of the bidet by the seating sensor, the hot water heater is operated to heat the washing water. In order to prevent the initial discharge temperature from falling below the set temperature when the hot water temperature is set, if the hot water temperature is lower than the set temperature, the self-cleaning is performed for a maximum of 10 seconds. Will raise. If the user drives the hot water heater in the detected state and performs self-cleaning for up to 10 seconds, when the set temperature is set to 40 ° C., the initial discharge temperature becomes 37 ° C. or more, and the temperature of the washing water discharged initially is set. Even if the temperature is slightly below the temperature does not feel cold at all, the user's discomfort can be removed.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

1 is a block diagram of a washing water heating device of the bidet according to the present invention.

Figure 2a to 2c is a flow chart showing a washing water heating method of the bidet according to the present invention.

<Explanation of symbols for the main parts of the drawings>

110... Control panel

120... Memory

130... Sensor part

140... Control

150... Washing water heating part

160... Mechanical drive part

170... Power supply

Claims (13)

delete delete delete delete delete delete In the method of controlling the heating of the washing water in the bidet, A season determination process of determining a season when a seat is detected by a seat sensor in a standby state in which the hot water heater is turned off; A control program withdrawing process for withdrawing a control program for washing water heating control corresponding to the determined season from a memory; The temperature of the washing water is adjusted by differentiating the control of the hot water heater according to the season based on the extracted control program, When the operation button is pressed to control the hot water heater during the summer, a self-cleaning operation is performed. The washing water is heated by driving the hot water heater. When the self-cleaning operation is completed, the washing or bidet operation is performed corresponding to the operation button. And a washing water temperature adjusting process of turning off the driven hot water heater and performing a self-cleaning operation to perform a summer temperature adjusting process when the washing or bidet operation is completed. The method of claim 7, wherein the seasonal judgment process, The method of claim 1, wherein the user determines a season set by operating a mode selection key, or automatically determines a season based on the water temperature detected by the water inlet sensor. The method of claim 7, wherein the control program, A summer control program set as a default and set to control a hot water heater in summer; A spring / fall control program configured to control the hot water heater in spring and autumn; Washing water heating control method of the bidet, characterized in that it comprises a winter control program set to control the hot water heater in winter. The method of claim 7, wherein the washing water temperature control process, A spring / autumn season temperature control process for controlling the hot water heater in spring / autumn season; Washing water heating control method of the bidet further comprises a winter temperature control process for controlling the hot water heater in winter. delete The method of claim 10, wherein the spring / autumn temperature control process, Performing a self-cleaning operation when the operation button is pressed, and heating the washing water by driving a hot water heater; Detecting a temperature of the heated washing water to determine whether a set temperature has been reached; Performing a self-cleaning operation for a set time when the temperature of the washing water does not reach a set temperature; Performing a cleaning or bidet operation corresponding to the operation button when the self-cleaning operation for the set time is completed or the temperature of the washing water reaches the set temperature; And when the washing or bidet operation is completed, turning off the driven hot water heater and performing a self-cleaning operation. The method of claim 10, wherein the winter temperature control process, When the user is detected by the seating sensor, driving the hot water heater to heat the washing water; Performing a self-cleaning operation when the operation button is pressed, detecting a temperature of the heated washing water, and checking whether a set temperature has been reached; Performing a self-cleaning operation for a set time when the temperature of the washing water does not reach a set temperature; Performing a cleaning or bidet operation corresponding to the operation button when the self-cleaning operation for the set time is completed or the temperature of the washing water reaches the set temperature; And when the washing or bidet operation is finished, turning off the driven hot water heater and performing a self-cleaning operation.

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