KR20210028929A - Methods for preventing overheating of fluids exiting from bidet device - Google Patents

Abstract

The present invention relates to a method for preventing the overheating of fluid discharged from a bidet apparatus, which comprises: (a) a step in which a discharged water temperature sensor (220) installed on a hot water tank (200) of the bidet apparatus detects the temperature in the hot water tank (200); (b) a step of controlling an output of a heater (230) which heats the fluid stored in the hot water tank (200) by being installed in the hot water tank (200) by a preset method based on the temperature detected by the step (a); (c) a step in which the discharged water temperature sensor (220) detects the temperature in the hot water tank (200); (d) a step of conducting a water discharge mode of the bidet apparatus in accordance with the detection results based on the temperature detected in the step (c); (e) a step in which the discharged water temperature sensor (220) detects the temperature in the hot water tank (200); (f) a step of determining whether the fluid in the hot water tank (200) is overheated or not by a preset method based on the temperature detected in the step (e); and (g) a step of determining whether to conduct a cleaning mode of the bidet apparatus in accordance with the determination of the step (f). The present invention aims to provide a method for preventing the overheating of fluid discharged from a bidet apparatus, which is able to prevent accidents due to the discharge of overheated water when the water supply is blocked.

Description

[Methods for preventing overheating of fluids exiting from bidet device}

The present invention relates to a method for preventing overheating of fluid discharged from a bidet device. Specifically, the present invention relates to a method for determining the overheating of the fluid using temperature and time, but increasing the accuracy of determining whether the fluid is overheating by using a drainage algorithm.

Conventional bidet hot water systems are divided into an instantaneous hot water method that immediately heats flowing water, a storage type method consisting of a hot water tank and a sheath heater, and a continuous hot water method in which an instantaneous hot water method and a storage type are mixed.

Since the instantaneous hot water system requires a flow sensor to control hot water, it is possible to prevent the problem of water shortage in advance by detecting the flow rate when water is cut off, stopping the operation of the heater, and stopping the control.

On the other hand, in the case of the storage type, a separate flow sensor is not provided because the water is discharged by heating the stored water after placing hot water in a hot water tank. In addition, since hot water is naturally exhausted as water is discharged, there is no accident of hot water discharge.

The continuous hot water method (hybrid method), which combines the instantaneous hot water method and the storage type method, has a smaller tank than the storage type and uses a heater with higher power than the storage type. It is an improved invention. Therefore, in the continuous hot water method, hot water suitable for the target temperature can be continuously discharged by a combination of the amount of water to be discharged and the heater.

In the continuous hot water method, as there is no flow sensor like the storage type, it is not a problem in general situations, but even if the heater is turned off, the temperature of the hot water tank rises due to the latent heat. The temperature rises rapidly. In this state, if the water supply condition is terminated, the water from the elevated hot water tank may be discharged and a safety accident may occur.

The present invention is an invention of a control algorithm for preventing an accident in a bidet device, particularly in a continuous hot water system, in which the supply of water is blocked or overheated hot water is discharged after the shutdown of the blocked state.

(Patent Document 1) Korean Patent Document No. 10-1961634

(Patent Document 2) Korean Patent Publication No. 10-2007-0101626

(Patent Document 3) Korean Patent Publication No. 10-2014-0068480

The present invention was devised to solve the above problems.

Specifically, the present invention is an invention of a control algorithm for preventing an accident due to the outflow of overheated hot water from a single water in a state in which the supply of water is blocked.

In addition, the present invention is an invention of a control algorithm for preventing an accident due to the hot water discharged after the water shortage.

In addition, the present invention is to increase the accuracy of determination of whether or not the fluid is overheated.

In addition, the present invention is to compensate for the problem of the continuous hot water system developed to overcome the limit of not reaching the target temperature when the hot water tank runs out of hot water, which has been a problem in the storage type.

An embodiment of the present invention for solving the above problems,

The method according to the present invention comprises the steps of: (a) sensing the temperature in the hot water tank 200 by a water outlet temperature sensor 220 installed in the hot water tank 200 of the bidet device; (b) in the step (a) Controlling the output of the heater 230 for heating the fluid stored in the hot water tank 200 by being installed in the hot water tank 200 in a predetermined manner based on the sensed temperature; (c) the water outlet temperature sensor ( 220) sensing the temperature in the hot water tank 200; (d) performing a drainage mode of the bidet device according to a detection result based on the temperature detected in step (c); (e) The step of sensing the temperature in the hot water tank 200 by the water outlet temperature sensor 220; (f) overheating of the fluid in the hot water tank 200 in a predetermined method based on the temperature detected in the step (e). Determining whether or not; And (g) determining whether to perform a cleaning mode of the bidet device according to whether the fluid determined in step (f) is overheated or not.

In addition, the bidet device may include the hot water tank 200; an inlet valve 100 for controlling fluid supply to the hot water tank 200; a water outlet passage 240 that is a passage through which the fluid stored in the hot water tank 200 is discharged. ); A drain pipe 310 communicating with the water outlet passage 240 to discharge a fluid toward the receiving portion of the bidet device; a cleaning pipe 320 communicating with the water outlet passage 240 and spraying a fluid toward the object to be cleaned; And a flow path switching valve 300 for controlling communication between the water outlet flow path 240 and any one of the washing pipe 320 and the drain pipe 310.

In addition, in the step (d), the temperature detected by the water outlet temperature sensor 220 _{is greater than a preset over-rise prevention temperature (T 3} ), and a duration at which the over-rise prevention temperature (T _{3) is detected is preset.} If greater than the time, (d1) the intake valve 100 is operated to cut off the supply of the fluid to the hot water tank 200; And (d2) the flow path switching valve 300 is operated so that the water outlet passage 220 and the drain pipe 310 communicate, and the fluid remaining in the hot water tank 200 is discharged through the drain pipe 310. It is preferable to further include a step;

In addition, the step (d), after the step (d2), (d3) the inlet valve 100 is operated to allow the supply of fluid to the hot water tank 200, and supplied to the hot water tank 200. A step in which fluid is discharged through the drain pipe 310; Including further, the step (e), it is preferable that the step of sensing the temperature of the fluid discharged from the water outlet temperature sensor 220 in the step (d3).

In addition, the time in the step (d), the outflow water temperature sensor duration is less than the temperature of the lift preventing temperature (T ₃₎ is detected in 220, or that said over-prevention temperature (T ₃₎ is detected, rising a predetermined In the following cases, it is preferable that step (a) is performed again.

In addition, the step (d), after the step (d2), (d3) the inlet valve 100 is operated to allow the supply of fluid to the hot water tank 200, and supplied to the hot water tank 200. A step in which fluid is discharged through the drain pipe 310; Including further, the step (e), it is preferable that the step of sensing the temperature of the fluid discharged from the water outlet temperature sensor 220 in the step (d3).

In addition, the time in the step (d), the outflow water temperature sensor duration is less than the temperature of the lift preventing temperature (T ₃₎ is detected in 220, or that said over-prevention temperature (T ₃₎ is detected, rising a predetermined In the following cases, it is preferable that step (a) is performed again.

In addition, the step (f), when the temperature sensed in the step (e) _{is greater than the safety temperature (T 0} ), the step (g) includes the step of determining that the fluid is overheated, the step (f) In the case of determining that the fluid is overheated in step ), the washing mode of the bidet device is determined not to be performed, and the safety temperature T ₀ is a temperature less than the overheating prevention temperature T _3. desirable.

In addition, the step (f), when the temperature sensed in the step (e) _{is less than the safe temperature (T 0} ), includes the step of determining that the fluid is not overheated, the step (g), the ( When it is determined that the fluid is not overheated in step f), (g1) sensing a temperature by the water outlet temperature sensor 220; And (g2) when the temperature sensed in the step (g1) _{is greater than the target temperature T 1} , determining to perform the cleaning mode, wherein the target temperature T ₁ is the overrise prevention temperature ( It is preferably a temperature less than T _{3 ).}

In addition, in step (f), the temperature sensed in step (e) _{is greater than the safety temperature (T 0} ) and lower than the target temperature (T ₁ ), and the duration at which the sensed temperature is sensed is greater than or equal to a preset time. In this case, the method further includes determining that the fluid is not overheated, and the safety temperature T ₀ is preferably a temperature lower than the target temperature T _1.

In addition, the step (g2), when the temperature sensed in the step (g1) _{is less than the target temperature (T 1} ), controlling the output of the heater 230, and then performing the step (g1) again. It is preferable to further include.

In addition, the step (b), when the temperature sensed in the step (a) _{is less than the off temperature (T 2} ), the heater 230 is operated to control the output of the heater 230; And when the temperature sensed in step (a) _{is greater than the off temperature (T 2} ), the heater 230 is turned off; further comprising, the off temperature (T ₂ ) is the overrise prevention temperature ( It is preferably a temperature less than T _{3 ).}

Also, the safe temperature (T ₀₎ is the target temperature (T ₁₎ smaller, the target temperature (T ₁₎ is off temperature (T ₂₎ smaller, the off temperature (T ₂₎ prevents the and elevated temperature ( It is preferably smaller than T _{3 ).}

In addition, it is preferable that the present invention provides a bidet device in which the method is carried out.

The method according to the invention,

It is possible to prevent damage, including burns, to users caused by overheated hot water outlet.

The target temperature can be reached when the hot water tank runs out of hot water, which has been a problem in the storage type.

Using the time and temperature, it is possible to accurately determine whether or not the hot water to be discharged is overheated, and to determine whether the hot water is overheated or not as a single water.

It is possible to accurately determine whether or not the hot water to be discharged is overheated during the tapping operation by using time and temperature, and using the drainage mode, and determine whether the hot water is overheated or not in a state after taping.

1 is a view showing a hot water tank and a flow path switching valve.
2 is a diagram showing the temperature according to the present invention.
3 is a diagram showing a method of determining overheating of a fluid according to the present invention.
4 is a diagram showing a method of determining overheating of a fluid according to the present invention.

Hereinafter, the term "stage" refers to a state in which water is not supplied to the inlet valve 100, and may include a case that occurs due to a power outage or a malfunction of a machine.

Hereinafter, the term "cleaning mode" means that the discharged fluid directly contacts the user's body, and includes both a general washing for anus washing and a female washing for local washing of women.

Hereinafter, "off" may include both stopping or stopping the operation of the device. For example, turning off the heater means stopping the operation of the heater.

Hereinafter, "overheating of the fluid" refers to a state in which the temperature of the fluid is increased to cause damage such as a burn when it comes into contact with the user's body.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

The configuration of the bidet device for explaining a method of preventing overheating of fluid discharged from the bidet device in the bidet device according to the present invention includes an inlet valve 100, a hot water tank 200, and a flow path switching valve 300.

Referring to Figure 1, the configuration of the bidet device according to the present invention will be described.

The inlet valve 100 refers to a valve capable of supplying or blocking fluid to the hot water tank 200. The inlet valve 100 may be connected to an inlet passage 140 connected to the hot water tank 200. The inlet valve 100 may be operated to allow fluid supply to the hot water tank 200, or the supply of the fluid to the hot water tank 200 may be blocked. In this case, the fluid may be water, but is not limited thereto.

The hot water tank 200 refers to a space for controlling the temperature of the fluid supplied from the inlet valve 100 and storing the fluid. The hot water tank 200 includes an inlet temperature sensor 210, a water outlet temperature sensor 220, and a heater 230.

According to the present invention, the hot water tank 200 is a continuous hot water method, and may not include a flow sensor, and the hot water tank 200 may have a relatively smaller capacity than a hot water tank of a storage type or instantaneous hot water type, The present invention is not limited to the continuous hot water system.

The inlet temperature sensor 210 may measure the temperature of the fluid supplied from the inlet valve 100. The inlet temperature sensor 210 may be installed in a position close to the inlet valve 100 of the hot water tank 200 or in the inlet passage 140, and may be positioned in the hot water tank 200 as shown. The intake temperature sensor 210 suffices if it is installed in a position suitable for measuring the temperature of the supplied fluid, and is not limited to the illustrated bar.

The water outlet temperature sensor 220 may measure the temperature in the hot water tank 200. In addition, the water outlet temperature sensor 220 may measure the temperature of the discharged fluid.

The water outlet temperature sensor 220 may be installed in a position close to the flow path switching valve 100 or in the water outlet passage 240, and may be located in the hot water tank 200 as shown. The location of the water outlet temperature sensor 220 is not limited to the illustrated bar.

The water outlet temperature sensor 220 may measure the temperature of the fluid discharged from the hot water tank 200 or the hot water tank 200. The water outlet temperature sensor 220 may measure the temperature of the fluid overheated by the heater 230 according to the present invention, and use this to perform a method of preventing overheating of the fluid discharged from the bidet device. This will be described later.

In this case, the inlet temperature sensor 210 and the outlet water temperature sensor 220 can sense the temperature around the sensor other than the fluid supplied or discharged, and thus may be configured as a non-contact sensor as well as a contact type.

The heater 230 may adjust the temperature of the supplied fluid. The heater 230 may increase the temperature of the fluid. In this case, the heater 230 may be a sheath heater having a shape of a tube in which a heating wire is embedded in a metal protection tube in a coil shape, filled with an insulating material, and insulated from the heating wire and the protection tube, but is not limited thereto. When the present invention is configured in a continuous hot water method, the capacity of the heater 230 may be set relatively high. For example, the capacity of the heater 230 may be set to 143cc at a power of 1800W, 250cc at a power of 1500W, and 500cc at a power of 800W, but is not limited thereto.

The water outlet passage 240 refers to a passage through which the fluid stored in the hot water tank 200 is discharged, and may be connected to the hot water tank 200 and may be connected to the flow path switching valve 300.

The flow path switching valve 300 refers to a valve capable of converting a flow path to one of a drain pipe 310 and a washing pipe 320, which are flow paths through which fluid discharged from the hot water tank 200 moves and drains. For example, the flow path switching valve 300 may change the flow path to the drain pipe 310 to drain the fluid discharged from the hot water tank 200.

The drain pipe 310 may be in communication with the water outlet passage 240 to discharge the fluid toward the receiving portion of the bidet device.

The cleaning pipe 320 may be in communication with the water outlet passage 240 to inject a fluid toward the object to be cleaned. The cleaning tube 320 may include a female cleaning tube 320a, which is a flow path for cleaning women, or a general cleaning tube 320b, which is cleaned in general.

The flow path switching valve 300 may be installed in communication with the flow path tank 200 by the water outlet flow path 240, but is not limited thereto.

The control unit is configured to control all of the inlet valve 100, the hot water tank 200, the inlet temperature sensor 210, the outlet water temperature sensor 220, the heater 230, the flow path switching valve 300 according to the present invention Means. The control unit is installed inside the bidet device, and the location is not limited.

The control unit may receive control information from the inlet valve 100, the hot water tank 200, the inlet temperature sensor 210, the outlet water temperature sensor 220, the heater 230, and the flow path switching valve 300, respectively.

Under the control of the controller, the heater 230 may be operated in a general control mode.

At this time, in the general control mode, when the temperature sensed by the water outlet temperature sensor 220 to be described later _{exceeds the target temperature (T 1} ) and is less than the off temperature (T ₂ ), one or more of the output and temperature of the heater 230 It means an operation of controlling the heater 230 while lowering and maintaining the output and temperature of the heater 230 when _{the temperature sensed by the water outlet temperature sensor 220 is less than or equal to the target temperature T 1 to be described later.} In this case, the heater 230 may decrease at least one of output and temperature by a preset value. In this case, the preset output or temperature may have different values according to the sensed temperature.

2 is a diagram showing control of a heater according to a set temperature.

2 shows that the safety temperature (T ₀ ) is less than the target temperature (T ₁ ), the target temperature (T ₁ ) is less than the off temperature (T ₂ ), and the off temperature (T ₂ ) is the overrise prevention temperature (T ₃ ). It is smaller than that, and the overrise prevention temperature T ₃ is less than the error temperature T _4.

The safe temperature T ₀ refers to a temperature at which the user does not feel a sense of heat even when the fluid having the _{safe temperature T 0 contacts the user's body.} The safety temperature T ₀ is set lower than the target temperature T _1. For example, the safety temperature T ₀ may be a temperature of about 15 to 25°C, but is not limited thereto.

The target temperature T ₁ refers to a temperature to be achieved in the cleaning mode, _{and when the fluid having the target temperature T 1} contacts the user's body, it refers to a temperature at which the user feels a sense of heat. As shown in FIG. 2, it means a temperature higher than the _{safe temperature (T 0 ).} The cleaning mode is a mode for cleaning by contacting the user's body, and the target temperature (T ₁ ) may be about 25 to 35°C, but is not limited thereto, and the user feels lukewarm or warmth. Can be set to temperature.

When the controller _{reaches the target temperature T 1} , the heater 230 may perform a general control operation, thereby lowering the capacity of the heater 230.

The off temperature (T ₂ ) refers to a temperature at which the heater 230 is turned off to prevent an excessive temperature rise. The off temperature (T ₂ ) does not mean a temperature that causes damage to the user, but _{even if the heater 230 is turned off at the off temperature (T 2} ), the temperature is increased by the latent heat remaining in the heater 230. When a fluid comes into contact with a user, it means a temperature that can cause damage to the user, including burns. The off temperature T ₂ may be a temperature of about 35 to 45°C, but is not limited thereto, and may be set to a temperature at which the user feels a sense of hotness.

The control unit may perform a normal control operation the heater 230 at a temperature below-off temperature (T _2), at temperatures above-off temperature (T _2), the control unit can perform the operation of turning off the heater 230, have.

The error temperature (T ₄ ) means a temperature at which the temperature of the fluid sensed by the water outlet temperature sensor 220 is very high. The error temperature T ₄ may be a temperature of 50°C or higher, but is not limited thereto.

At the error temperature (T ₄ ), an error operation may be displayed on the bidet device, and it may be notified that there is a problem with the bidet device.

The overrise prevention temperature (T ₃ ) means a temperature range between the off temperature (T ₂ ) and the error temperature (T _{4 ).} When the outflow water temperature sensor 220, the temperature of the fluid and prevent the rising detecting the temperature (T ₃₎ or more, and the lift preventing temperature (T ₃₎ more sustained above time period is predetermined to be the detected high temperature, the control unit is You can exit the cleaning mode. The over-rise prevention temperature (T ₃ ) may be a temperature of about 45 to 50 °C, but is not limited thereto.

3 and 4, a method of preventing overheating of the fluid discharged from the bidet device according to the present invention will be described.

If Figure 3, the sensed temperature in the outflow water temperature sensor 220 and the lift preventing temperature (T ₃₎ and not more than the lift preventing temperature (T ₃₎ is detected, the duration is greater than a predetermined time that the fluid is too hot A method of determining and ending the cleaning mode will be described.

In this case, the determination that the fluid is overheated may mean that the overheating of the fluid is caused by the outage state or from the use after the outage state, but is not limited thereto, and in other cases, for example, the operation of the device. It can include all cases that arise from errors.

The control unit determines the input mode commanded by the user. The input mode may include a washing mode and a drainage mode, and the washing mode may include a general washing mode and a female washing mode. In this case, the cleaning mode may include all modes in which the fluid comes into contact with the user.

When the input mode is the cleaning mode, the controller may general control the heater 230 in the hot water tank 200. At this time, when the input mode is a drainage mode or a mode in which fluid does not contact the user, such as a drying mode, since a problem due to latent heat in the hot water tank 200 does not occur, the control unit prevents overheating when water runs out according to the invention You can end the way.

The water outlet temperature sensor 220 installed in the hot water tank 200 of the bidet device detects the temperature of the water discharged fluid or the hot water tank 200.

The output of the heater 230 that is installed in the hot water tank 200 and heats the fluid stored in the hot water tank 200 in a predetermined method based on the sensed temperature may be controlled.

The controller may determine whether the temperature sensed by the water outlet temperature sensor 220 is greater than the _{off temperature T 2.}

When the temperature sensed by the water outlet temperature sensor 220 _{is greater than the off temperature T 2} , the heater 230 may be turned off. This will be described later in the following paragraphs.

When the temperature sensed by the water outlet temperature sensor 220 is _{less than the off temperature T 2} , the heater 230 may be operated in a general control mode. At this time, when the heater 230 is operated in the general control mode and the temperature sensed by the water outlet temperature sensor 220 _{reaches the target temperature T 1} , the flow path switching valve 300 is switched to the washing pipe 320 So that the cleaning mode can be performed.

At this time, the control unit receives the temperature detected by the water outlet temperature sensor 220 in real time, and _{even if the temperature sensed by the water outlet temperature sensor 220 is less than the off temperature (T 2} ), the temperature detected later is the off temperature (T). _{When it reaches 2} ), an operation of turning off the heater 230 may be performed.

The water outlet temperature sensor 220 detects the temperature of the hot water tank 200 or the water outlet again.

As described above, when the temperature sensed by the water outlet temperature sensor 220 _{is greater than the off temperature T 2} , the heater 230 is turned off.

After the heater 230 is turned off, the controller may determine that the fluid is overheated if _{the temperature again detected by the water outlet temperature sensor 220 is greater than the overrise prevention temperature T 3 and a preset time has elapsed.} Accordingly, the cleaning mode may be terminated due to an excessive increase in temperature due to the latent heat of the heater 230.

After the heater 230 is turned off, when the temperature sensed by the water outlet temperature sensor 220 _{is less than the off temperature T 2} , the heater 230 may be operated in a general control mode. At this time, when the heater 230 is operated in the general control mode and the temperature sensed by the water outlet temperature sensor 220 _{reaches the target temperature T 1} , the flow path switching valve 300 is switched to perform the cleaning mode. I can.

In this case, the preset time may be referred to as n seconds, and the n value may be 2 or more, but is not limited thereto.

When the temperature sensed by the water outlet temperature sensor 220 _{is less than the over-rise prevention temperature (T 3} ) or less than a preset time, the controller returns to the operation step of turning off the heater 230 and is detected by the water outlet temperature sensor 220 The temperature can be measured repeatedly.

At this time, when the temperature again sensed by the water outlet temperature sensor 220 is _{less than the off temperature T 2} , the heater 230 may operate in a general control mode. At this time, when the heater 230 is operated in the general control mode and the temperature sensed by the water outlet temperature sensor 220 _{reaches the target temperature T 1} , the flow path switching valve 300 is switched to perform the cleaning mode. I can.

At this time, when the temperature detected again by the water outlet temperature sensor 220 _{is greater than the over-rise prevention temperature T 3} and a preset time has elapsed, it is determined that the fluid is overheated and the cleaning mode may be terminated.

Figure 4 is the case where the time duration in which the temperature of the lift preventing temperature (T ₃₎ more than yigogwa lift preventing temperature (T ₃₎ detected by the outflow water temperature sensor 220, detected is greater than a predetermined time, the operation of a multiple mode Even after, if the temperature sensed by the water outlet temperature sensor 220 is _{higher than or equal to the safety mode (T 0} ), it is determined that the fluid is overheated, and a method of terminating the cleaning mode will be described.

That is, FIG. 4 shows that only when the temperature sensed by the water outlet temperature sensor 220 in FIG. 3 is maintained for a predetermined time or more above the over- _{rise prevention temperature (T 3 ), the drainage mode is then operated.} It shows a flow chart. Others operate in the same manner as in the flowchart of FIG. 3.

Based on the temperature sensed by the water outlet temperature sensor 220, the drainage mode is performed.

When the temperature sensed by the water outlet temperature sensor 220 exceeds the over-rise prevention temperature (T ₃ ) and a preset time elapses, the inlet valve 100 operates to block the fluid supplied to the hot water tank 200, and the hot water tank In 200, the previously supplied fluid remains.

When the inlet valve 100 operates to cut off the fluid supplied to the hot water tank 200, the fluid valve 300 is switched to the drain pipe 310. When it is switched to the drain pipe 310, the remaining fluid can be drained. That is, the remaining fluid whose temperature has risen due to the latent heat remaining in the hot water tank 200 may be drained. As the fluid is drained, the temperature at which the remaining fluid is discharged may be lowered.

After draining the fluid, the inlet valve 100 operates to receive the fluid into the hot water tank 200, and the outlet water temperature sensor 220 senses the temperature at which the newly supplied fluid has risen in the hot water tank 200.

At this time, if the overheating of the fluid is caused by the water supply, even if the water intake valve 100 is opened, the fluid is not supplied to the hot water tank 200, so the water outlet temperature sensor 220 is used as the hot water tank. The fluid remaining in the 200 or the temperature around the water outlet temperature sensor 220 may be sensed.

Based on the temperature sensed by the water outlet temperature sensor 220, it may be determined whether or not the fluid of the bidet device is overheated in a predetermined manner.

When the sensed temperature is _{higher than the safe temperature T 0} , the controller determines that the fluid is overheated and latent heat remains in the hot water tank 200, and ends the cleaning mode.

At this time, the reference of the sensed temperature is set to a safe temperature (T ₀ ). When the fluid whose temperature has risen due to the latent heat remaining in the hot water tank 200 is first drained, the hot water tank 200 and the fluid are sufficiently Since it can be cooled, if the sensed temperature measured later _{is higher than the safe temperature T 0} , it can be determined that overheating of the fluid continues.

However, even after the sensed temperature is _{detected to be higher than the safe temperature T 0} , the control unit may not immediately terminate the cleaning mode. The controller detects a temperature greater than the safety temperature (T ₀ ), and then the detected temperature is _{greater than the safety temperature (T 0} ) and lower than the target temperature (T ₁ ), and the duration at which the detected temperature is detected is If it is longer than the set time, the fluid may be determined as not overheating.

In this case, even if the temperature is higher than the _{safe temperature (T 0 ), the temperature is lower than the target temperature (T 1} ) and the temperature is maintained by the time the sensed temperature is detected, due to the latent heat of the hot water tank (200). By determining that the temperature does not rise any more, it may be determined that the latent heat of the hot water tank 200 does not remain sufficiently to overheat the fluid.

In addition, even if the temperature measured by the water outflow temperature sensor 220 _{is greater than the safe temperature (T 0} ), the temperature of the fluid detected after that time is greater than the safe temperature (T ₀ ) and the target temperature (T ₁ ). If it is lower, the fluid may be judged as unsuperheated.

At this time, even if the temperature of the fluid in the days before the measurement higher temperature than the safe temperature (T _0), the time is greater than the safety temperature (T ₀₎ a temperature of the measured fluid passes is lower than the target temperature (T ₁₎ the hot water tank It is determined that the temperature does not rise any more due to the latent heat of 200, and it can be determined that the latent heat of the hot water tank 200 does not remain sufficiently to overheat the fluid.

The fluid determined to be non-overheated may be adjusted to a _{target temperature T 1} , which is a temperature suitable for the cleaning mode, according to the general control mode of the heater 200. At this time, if the temperature of the fluid is between the safe temperature (T0) and the target temperature (T1), there is no problem in use, but the operation of heating again is performed to satisfy the user's fluid temperature.

Whether to perform the cleaning mode of the bidet device may be determined according to whether the fluid is overheated.

If the temperature of the newly supplied fluid _{is lower than the safe temperature (T 0} ), the fluid may be determined as unsuperheated. At this time, the control unit may operate the intake valve 100 to stop supplying the fluid to the hot water tank 200 and operate the heater 200 to operate in a general control mode. That is, since _{a fluid having a temperature lower than the safe temperature T 0} may feel cold when it comes into contact with the user's body, the controller may adjust the temperature to a temperature suitable for the cleaning mode before operating the cleaning mode.

After controlling the heater 200, if the temperature sensed by the water outlet temperature sensor 220 _{is higher than the target temperature (T 1} ), the control unit turns the flow path switching valve 300 into a female washing pipe (320a) or a general washing pipe (320b). Can be switched to. After switching the flow path, the control unit opens the inlet valve 100 to sufficiently perform the cleaning mode.

Even after controlling the heater 200, if the temperature sensed by the water outlet temperature sensor 220 _{is lower than the target temperature T 1} , the controller may control the heater 200 in the normal control mode again.

In the above, the present specification has been described with reference to the embodiments shown in the drawings so that those skilled in the art can easily understand and reproduce the present invention, but these are only exemplary, and those skilled in the art can use various modifications and equivalents from the embodiments of the present invention. It will be appreciated that examples are possible. Therefore, the scope of protection of the present invention should be determined by the claims.

100: inlet valve
140: Incoming Euro
200: hot water tank
210: inlet temperature sensor
220: water outlet temperature sensor
230: heater
240: outflow channel
300: flow path switching valve
310: drain pipe
320: washing tube
320a: Women's Customs Office
320b: General cleansing pipe
T ₀ : Safe temperature
T ₁ : Target temperature
T ₂ : off temperature
T ₃ : Over-rise prevention temperature
T ₄ : Error temperature

Claims (12)

(a) sensing the temperature in the hot water tank 200 by a water outlet temperature sensor 220 installed in the hot water tank 200 of the bidet device;
(b) controlling the output of the heater 230 for heating the fluid stored in the hot water tank 200 by being installed in the hot water tank 200 in a predetermined method based on the temperature detected in the step (a) ;
(c) sensing the temperature in the hot water tank 200 by the water outlet temperature sensor 220;
(d) performing a drainage mode of the bidet device according to a detection result based on the temperature detected in step (c);
(e) sensing the temperature in the hot water tank 200 by the water outlet temperature sensor 220;
(f) determining whether the fluid in the hot water tank 200 is overheated in a predetermined method based on the temperature sensed in step (e); And
(g) determining whether to perform the cleaning mode of the bidet device according to whether the fluid determined in step (f) is overheated or not; including,
A method of preventing overheating of the fluid discharged from the bidet device.
The method of claim 1,
The bidet device,
The hot water tank 200;
Inlet valve 100 for controlling the supply of fluid to the hot water tank 200;
A water outlet passage 240 that is a passage through which the fluid stored in the hot water tank 200 is discharged;
A drain pipe 310 communicating with the water outlet passage 240 to discharge a fluid toward the receiving portion of the bidet device;
A cleaning pipe (320) communicating with the water outlet passage (240) and spraying a fluid toward the object to be cleaned; And
Containing; a flow path switching valve 300 for controlling communication of any one of the water outlet flow path 240 and the washing pipe 320 and the drain pipe 310;
A method of preventing overheating of the fluid discharged from the bidet device.
The method of claim 2,
In the step (d), the temperature sensed by the water outlet temperature sensor 220 is greater than a _{preset overrise prevention temperature (T 3 ), and the duration at which the overrise prevention temperature (T 3} ) is detected is greater than a preset time. Large case,
(d1) shutting off the supply of fluid to the hot water tank 200 by operating the inlet valve 100; And
(d2) a step in which the flow path switching valve 300 is operated so that the water outlet flow path 220 and the drain pipe 310 communicate, and the fluid remaining in the hot water tank 200 is discharged through the drain pipe 310 Including;
A method of preventing overheating of the fluid discharged from the bidet device.
The method of claim 3,
The step (d),
After the step (d2),
(d3) the intake valve 100 is operated to allow fluid supply to the hot water tank 200, and the fluid supplied to the hot water tank 200 is discharged through the drain pipe 310; Including more,
The step (e),
The water outlet temperature sensor 220 further comprises the step of sensing the temperature of the fluid discharged in the step (d3),
A method of preventing overheating of the fluid exiting the bidet device.
The method of claim 1,
Wherein (d) if in step, the temperature and the lift preventing temperature (T ₃₎ is less than or above and prevent the temperature rise (T ₃₎ is less than or equal to the detection time duration is pre-set which is detected by the outflow water temperature sensor 220 ,
The step (a) is performed again,
A method of preventing overheating of the fluid exiting the bidet device.
The method of claim 3,
The step (f),
In the case where the temperature sensed in step (e) _{is greater than the safe temperature (T 0} ), determining that the fluid is overheated,
The step (g),
In the case of determining that the fluid is overheated in the step (f), determining that the washing mode of the bidet device is not performed,
The safety temperature (T ₀ ) is a temperature less than the over-rise prevention temperature (T _{3 ),}
A method of preventing overheating of the fluid exiting the bidet device.
The method of claim 3,
The step (f),
In the case where the temperature sensed in step (e) _{is less than the safe temperature (T 0} ), determining that the fluid is not overheated,
The step (g),
When it is determined that the fluid is not overheated in step (f),
(g1) sensing a temperature in the water outlet temperature sensor 220; And
(g2) when the temperature sensed in the step (g1) _{is greater than the target temperature T 1} , the cleaning mode is determined to be performed,
The target temperature (T ₁ ) is a temperature less than the over-rise prevention temperature (T _{3 ),}
A method of preventing overheating of the fluid exiting the bidet device.
The method of claim 7,
The step (f),
If the temperature sensed in step (e) _{is greater than the safety temperature (T 0} ) and lower than the target temperature (T ₁ ), and the duration at which the sensed temperature is sensed is greater than a preset time, the fluid is determined to be unsuperheated. Further comprising a step,
The safety temperature (T ₀ ) is a temperature less than the target temperature (T _{1 ),}
A method of preventing overheating of the fluid exiting the bidet device.
The method of claim 7,
The step (g2),
If the temperature sensed in the step (g1) _{is less than the target temperature (T 1} ), controlling the output of the heater 230, further comprising performing the step (g1) again,
A method of preventing overheating of the fluid discharged from the bidet device.
The method of claim 1,
The step (b),
If the temperature sensed in step (a) _{is less than the off temperature (T 2} ), controlling the output of the heater 230 by operating the heater 230; And
If the temperature sensed in step (a) _{is greater than the off temperature (T 2} ), the heater 230 is turned off; further comprising,
The off temperature (T ₂ ) is a temperature smaller than the over-rise prevention temperature (T _{3 ),}
A method of preventing overheating of the fluid exiting the bidet device.
The method of claim 6,
The safety temperature (T ₀ ) is less than the target temperature (T _{1 ),}
The target temperature (T ₁ ) is less than the off temperature (T _{2 ),}
The off temperature (T ₂ ) is less than the overrise prevention temperature (T _{3 ),}
A method of preventing overheating of the fluid discharged from the bidet device.
The method according to any one of claims 1 to 11 is carried out,
Bidet device.

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