WO2021057041A1

WO2021057041A1 - Self-detection method and working method for sanitary cleaning device

Info

Publication number: WO2021057041A1
Application number: PCT/CN2020/090826
Authority: WO
Inventors: 林孝发; 林孝山; 林山; 刘祖华; 林根远
Original assignee: 厦门科牧智能技术有限公司
Priority date: 2019-09-27
Filing date: 2020-05-18
Publication date: 2021-04-01
Also published as: CN110593372A

Abstract

Disclosed are a self-detection method and working method for a sanitary cleaning device. The sanitary cleaning device comprises a water tank for storing cleaning water, a heating device for heating the cleaning water, a water pump for conveying the cleaning water, and a spray-cleaning device for spraying the cleaning water. The self-detection method comprises: A1, starting water intake, the water entering the water tank; A2, determining whether a first preset water level of the water tank is detected within a preset time, if so, executing step A3, otherwise, executing step A4; A3, when the amount of water intake into the water tank reaches a preset value, stopping water intake, and starting the water pump to discharge the water in the water tank; and A4, initiating an alarm. The self-detection method can accurately detect whether the water tank can perform normal water intake, thereby preventing the water tank from failing to be used normally subsequently due to the failure of the water intake function. In addition, after the water intake, water in the water tank is discharged by using a water pump, thereby preventing a large amount of water from being accumulated in the water tank during a non-use period, thereby preventing the water tank from being frozen and cracked and growing bacteria.

Description

Self-checking method and working method of sanitary cleaning device

Technical field

The invention relates to the field of sanitary ware, in particular to a self-inspection method and working method of a sanitary cleaning device.

Background technique

The traditional sanitary cleaning device used for hip wash and/or feminine wash uses a stabilizing valve to stabilize the municipal water supply to achieve stable water pressure. However, the actual situation does not meet this expectation. This is because many uncontrollable factors such as the location and height of the municipal water supply often cause water pressure fluctuations, which can easily cause the temperature of the water output from the sanitary cleaning device to be hot and cold. , Which seriously affects the user experience. For this reason, a sanitary cleaning device with a water tank has emerged in the prior art. This device uses the water tank to store cleaning water to achieve an internal active water supply mode, thereby removing the influence of external pipeline water pressure fluctuations and improving user experience. In addition, this device is connected with a heating device on the downstream side of the water tank, and a water pump is connected on the downstream side of the heating device. The water in the water tank is pumped to the heating device by the water pump, and the water in the water tank is heated by the heating device before being transported to be used for hip washing and washing. / Or spray device for women's washing. When this kind of sanitary cleaning device is powered on for the first time, a self-check is required to detect whether the water tank can normally enter water. During the self-inspection, if the water can enter normally, the water will enter the water tank, and when the upper limit water level is detected, the water will continue to enter for a few seconds. There is often a certain time difference between the initial power-on and self-check of this kind of sanitary cleaning device and the user’s first use. During this period of time, due to the water in the water tank, the water in the water tank will easily grow bacteria if it is not used for a period of time. If this device is used in a cold area, the water tank is likely to be frozen and cracked.

Summary of the invention

The purpose of the present invention is to provide a self-checking method and working method of a sanitary cleaning device that prevents frost cracking and bacterial growth in view of the technical problems existing in the prior art.

The technical solution adopted by the present invention to solve the technical problem is: a self-checking method of a sanitary cleaning device, the sanitary cleaning device includes a water tank for storing cleaning water, a heating device for heating the cleaning water, and a A water pump for washing water and a spraying device for spraying washing water; the self-checking method is:

A1. Turn on the water inlet, and the water enters the water tank;

A2. Determine whether the first preset water level of the water tank is detected within the preset time, if yes, go to step A3, otherwise go to step A4;

A3. When the water intake of the water tank reaches the preset value, stop the water intake and start the water pump to discharge the water in the water tank;

A4. Start the alarm.

Further, the first preset water level is the lower limit water level of the water tank, and when the lower limit water level of the water tank is detected, water is continuously injected into the water tank within a predetermined time, so that the water intake amount of the water tank reaches the preset value.

Further, the first preset water level is the upper limit water level of the water tank, and when the upper limit water level of the water tank is detected, the water intake amount of the water tank reaches the preset value.

Further, the self-inspection method is a self-inspection method at power-on for the first time.

Further, the heating cavity of the heating device is arranged at the top of the water tank, and a suction pipe is arranged in the water tank. The top of the suction pipe is connected to the heating cavity of the heating device. The bottom end of the suction pipe is lower than the lower limit water level of the water tank. The end is higher than the self-cleaning water outlet of the spray washing device.

The present invention also provides a working method of a sanitary cleaning device, which includes a self-inspection link, a self-cleaning link, and a spray washing link; the self-inspection link adopts the above-mentioned self-inspection method of the sanitary cleaning device of the present invention.

Further, the self-cleaning link includes the following steps:

B1. Detect whether the person is sitting on the toilet, if yes, go to step B2, otherwise repeat this step:

B2, water into the water tank;

B3. Detect whether the water in the water tank reaches the second preset water level, if yes, go to step B4, otherwise go back to step B2;

B4. The water pump is started, and the water in the water tank is pumped to the spray washing device, so that the spray washing device realizes the self-cleaning function;

B5. After self-cleaning is over, the water pump is turned off, the water tank continues to enter the upper limit water level, and the heating chamber of the heating device is filled with water.

Further, the spray washing link includes the following steps:

C1. The water pump and the heater of the heating device are activated, and the heated water is output to the spray washing device, so that the spray washing device realizes the spray washing function;

C2. Detect whether the water in the water tank is below the lower limit water level, and if so, add water to the water tank until the upper limit water level of the water tank is detected;

C3. After spraying, stop the water inlet, the heater is turned off, the water pump is turned off after a delay, and the remaining water in the water tank is discharged.

Further, in the self-check link, if the upper limit water level detection fails, the water tank will remain in the water inlet state, and the excess water will be discharged from the overflow port or overflow pipe provided in the water tank, and when the user presses the stop button, it will be immediately or delayed. Stop water inflow at the time; the second preset water level is the lower limit water level.

Further, in the spraying process, if the detection of the lower limit water level and/or the upper limit water level fails, the water tank remains in the water inlet state, and the excess water is discharged from the overflow port or overflow pipe provided in the water tank, and the user presses the stop button If the lower limit water level is not detected, the water pump and heater will be turned off.

Compared with the prior art, the present invention has the following beneficial effects:

1. The self-inspection method can accurately detect whether the water tank can enter the water normally, and avoid the failure of the water inlet function to cause subsequent failure to use normally. At the same time, after the water enters, the water in the water tank is discharged by the water pump to avoid the existence of the water tank during non-use periods A large amount of stagnant water prevents the water tank from being frozen and cracked and the growth of bacteria.

2. The heating cavity of the heating device is arranged on the top of the water tank, so that the water tank of the present invention can integrate the heating device, thereby not only reducing the parts and assembly steps of the heating device, saving costs, but also making the overall structure of the sanitary cleaning device It is more concise and reduces the space occupied. A pumping pipe is arranged in the water tank, and the top of the pumping pipe is connected to the heating cavity of the heating device. The bottom end of the pumping pipe is lower than the lower limit water level of the water tank, so that a buffer water level is formed between the bottom end of the pumping pipe and the lower limit water level of the water tank, which can be used for Make up for the time difference between the liquid level judgment and the start of the water inlet, and prevent the water pump from being unable to pump water during this time difference, that is, it can play the function of delay protection. The bottom end of the pumping pipe is higher than the self-cleaning water outlet of the spray washing device. When there is a sudden power failure/water cut during use, the siphon phenomenon formed by the height difference between the bottom end of the pumping pipe and the self-cleaning water outlet can be used to remove the inside of the water tank. The remaining cleaning water is drained to avoid the device from stopping operation due to a sudden power cut/water cut, and the residual water in the water tank cannot be drained, which is prone to problems such as bacterial growth and freeze cracking.

3. The self-cleaning link can play a self-cleaning function, making users more sanitary and at ease. When the self-cleaning is over, the water tank and the heating chamber of the heating device are filled with water, which can prevent the heater from drying out on the one hand, and on the other This aspect can reduce the time waiting for water to enter when the spray washing is started, thereby improving the user's spray washing experience.

4. At the end of spray washing, the water pump will be turned off after a delay to drain the remaining water in the water tank, so as to avoid the problem of bacteria growth and freezing cracks that are prone to the water remaining in the water tank for a long time.

5. When the detection of the lower limit water level and/or the upper limit water level fails, the water tank remains in the water inlet state, and the excess water is discharged from the overflow port or overflow pipe set in the water tank, and when the user presses the stop button, it will be immediately or delayed Stop the water intake to avoid affecting the user's use; if the lower limit water level cannot be detected, turn off the water pump and heater to avoid dry heating of the heater.

The following describes the present invention in further detail with reference to the accompanying drawings and embodiments; however, the self-checking method and working method of a sanitary cleaning device of the present invention are not limited to the embodiments.

Description of the drawings

Figure 1 is an exploded schematic diagram of the sanitary cleaning device of the present invention;

2 is a schematic diagram of the three-dimensional structure of the sanitary cleaning device of the present invention;

Figure 3 is a cross-sectional view of the sanitary cleaning device of the present invention;

Figure 4 is a second cross-sectional view of the sanitary cleaning device of the present invention;

Figure 5 is a third sectional view of the sanitary cleaning device of the present invention;

Fig. 6 is a schematic diagram of water intake during power-on self-check of the sanitary cleaning device of the present invention;

7 is a cross-sectional view of the water level higher than the lower limit water level when the sanitary cleaning device of the present invention is powered on and self-checked;

Figure 8 is a cross-sectional view of the sanitary cleaning device of the present invention when the water is stopped when it is powered on and self-checked;

Fig. 9 is a schematic diagram 1 of the pumping state of the sanitary cleaning device of the present invention when it is powered on and self-checking;

10 is the second schematic diagram of the water pumping state when the sanitary cleaning device of the present invention is powered on and self-checking;

Figure 11 is a cross-sectional view of the sanitary cleaning device of the present invention when the water level in the self-cleaning stage reaches the lower limit water level;

Figure 12 is a schematic diagram of the full water state of the sanitary cleaning device of the present invention at the end of self-cleaning;

FIG. 13 is a schematic diagram 1 of the water pumping state of the sanitary cleaning device of the present invention in the spray washing link;

14 is the second schematic diagram of the water pumping state of the sanitary cleaning device of the present invention in the spray washing link;

15 is a schematic diagram of the state where the water level of the sanitary cleaning device of the present invention drops to the lower limit water level during the spray washing step;

Fig. 16 is a schematic diagram of the state of the sanitary cleaning device of the present invention when overflow occurs in the self-cleaning link or the spray washing link;

Fig. 17 is a schematic diagram of the state of the sanitary washing device of the present invention using siphon drainage in the spray washing process.

detailed description

For an embodiment, please refer to Figures 1 to 17, a self-checking method for a sanitary cleaning device of the present invention. The sanitary cleaning device includes a water tank for storing cleaning water and a heating device for heating the cleaning water. , A water pump 6 for transporting washing water, a spraying device 10 for spraying washing water to achieve hip washing or bidet washing. The heating device includes a heating cavity 13 and a heater arranged in the heating cavity. The heating cavity 13 is connected to the inside of the water tank, the water inlet of the water pump 6 is connected to the heating cavity 13, and the water outlet of the water pump 6 is connected to the spray washing device 10. The heating chamber 13 is arranged at the top of the water tank 1, and a suction pipe 5 is arranged in the water tank 1. The top end of the suction pipe 5 is connected to the heating cavity 13. The bottom end of the suction pipe 5 is lower than the lower limit water level of the water tank 1, and the bottom end of the suction pipe 5 is higher. The self-cleaning water outlet 101 of the spray washing device 10.

In this embodiment, the heater is specifically a ceramic heating plate 7, and the number of ceramic heating plates 7 is several. The several ceramic heating plates 7 are arranged side by side, and the adjacent ceramic heating plates 7 are connected to the ceramic heating plate. The plates 7 are parallel to the partition plate 42. There is a gap between each ceramic heating plate 7 and the adjacent partition plate, so that a serpentine heating channel 131 surrounding each ceramic heating plate 7 is formed in the heating cavity, so that the water flow can be sequentially Flow along the heating surfaces on both sides of the ceramic heating plate 7, thereby increasing the heating distance of the water in the heating cavity 13, so that the water is uniformly and fully heated in the heating cavity 13, and also improving the heating efficiency of the ceramic heating plate 7 . The side of the water tank 1 is provided with an installation port 14 communicating with the heating cavity 13 and used for inserting the ceramic heating piece 7. The cross section and longitudinal section of the heating cavity 13 are approximately square, and the ceramic heating sheet 7 is in the shape of a square flat plate.

In this embodiment, the ceramic heating plate 7 is in a standing state, and the water tank 1 is further provided with a water outlet cavity 16 located on the side of the heating cavity 13. The heating chamber 13 has an opening at the top, and an end cover 4 is connected to the water tank 1. The end cover 4 closes the opening and positions the ceramic heating sheet 7. Specifically, the bottom surface of the heating cavity 13 is provided with a plurality of first positioning grooves 132 distributed in parallel, and the bottom surface of the end cover 4 is provided with a plurality of second positioning grooves 43 distributed in parallel. In the first positioning groove 132, the tops of the plurality of ceramic heating plates 7 are inserted into the plurality of second positioning grooves 43 one by one; the top of the partition 42 is fixed to the end cover 4, specifically, the partition 42 and the end cover 4 are integrally formed, But it is not limited to this. The bottom of the partition plate 42 is inserted into the third positioning groove 133 provided on the bottom surface of the heating chamber 13. The number of the ceramic heater 7 is two, but it is not limited to this. The end cover 4 is provided with a water passage 41, one end of the water passage 41 is connected to the heating cavity through the water outlet cavity 16.

In this embodiment, the water tank 1 is provided with an overflow structure, and the overflow structure is specifically an overflow pipe 2. The top of the overflow pipe 2 is provided with an overflow port 21 located in the water storage cavity 15. The bottom end of the pipe 2 is provided with a drainage port 22 which leads to the outside of the water tank 1. Specifically, the water outlet 22 is located on the bottom wall of the water tank 1, but not limited to this. In other embodiments, the water outlet 22 is located at the bottom of the side wall of the water tank. In other embodiments, the overflow structure is an overflow port arranged on the side wall of the water tank.

In this embodiment, the water tank 1 is further provided with a water inlet pipe 3, and one end of the water inlet pipe 3 is provided with a water outlet 31 located in the water storage cavity 15, and the water outlet surface of the water outlet 31 constitutes the outlet of the water inlet structure. The water surface; the other end of the water inlet pipe 3 is provided with a water inlet 32, which leads to the outside of the water tank 1. Specifically, the water inlet 32 is located on the side wall of the water tank 1, as shown in FIG. 2, but is not limited to this. In other embodiments, the water inlet is located on the bottom wall or the top wall of the water tank. The water outlet 31 is higher than the overflow opening 21.

In this embodiment, the water pump 6 is arranged between the two

protective covers

8 and 9, and the water inlet end of the water pump 6 is connected to the other end of the water passage 41 of the end cover 4 through one of the protective covers 8.

In this embodiment, the water tank is also equipped with a first temperature sensor 17 for detecting the water temperature of the inlet water, a second temperature sensor 18 for detecting the water level, a liquid level common probe 15, and a high temperature sensor for detecting the upper limit water level. Liquid level probe 12, low liquid level probe 11 used to detect the lower limit water level, liquid level common end probe 15 is lower than the bottom end of the low liquid level probe 11, and the bottom end of the low liquid level probe 11 is lower than the high liquid level Probe 12 bottom end. The water inlet 32 is equipped with a solenoid valve (not shown in the figure) for controlling the water inlet. The present invention uses a controller to control the above-mentioned electrical components to achieve coordinated actions.

In this embodiment, the self-check method is implemented at the first power-on, and includes the following steps:

A1. Turn on the water inlet (that is, open the solenoid valve), and the water enters the water tank 1 from the water inlet pipe 3, as shown in Figure 6;

A2. Determine whether the first preset water level of the water tank 1 is detected within the preset time (the first preset water level is specifically the lower limit water level of the water tank and is detected by the low level probe 11), if yes, go to step A3, otherwise Go to step A5;

A3. Continue to inject water into the water tank 1 within the specified time. As shown in Figure 7, when the specified time (the specified time is a few seconds, set according to the volume of the water tank, for example, set to 5 seconds), stop the water inlet (ie electromagnetic The valve is closed), so that the water inlet of the water tank reaches the preset value, as shown in Figure 8, so that there is enough water to flow through the subsequent waterway;

A4. Start the water pump 6, and under the suction of the water pump 6, the water in the water tank 1 flows along the pumping pipe 5, the heating chamber 13, the water outlet chamber 16, the water passage 41 of the end cover, and the water pump 6, as shown in Figure 9. As shown in FIG. 10, it is finally discharged from the self-cleaning water path of the spray washing device 10, so that the water in the water tank 1 is basically discharged.

A5. Start the alarm.

In other embodiments, the first preset water level is the upper limit water level of the water tank, and when the upper limit water level of the water tank is detected, the water intake amount of the water tank reaches the preset value.

The self-inspection method of the sanitary cleaning device of the present invention can accurately detect whether the water tank can normally enter water, and avoid the failure of the water inlet function to cause subsequent failures in normal use. At the same time, after the water enters, the water in the water tank is basically discharged by the water pump. Avoid large amounts of water in the water tank during non-use periods, so as to avoid freezing and cracking of the water tank and the growth of bacteria.

The working method of the sanitary cleaning device of the present invention includes a self-inspection link, a self-cleaning link, and a spray washing link; the self-inspection link adopts the self-inspection method of the sanitary cleaning device of the present invention.

In this embodiment, the self-cleaning step includes the following steps:

B2, water into the water tank 1, that is, the solenoid valve is opened;

B3. Detect whether the water in the water tank 1 reaches the second preset water level (the second preset water level is specifically the lower limit water level detected by the low level probe 11, but not limited to this), as shown in FIG. 11, if yes Go to step B4, otherwise go back to step B2;

B4. The water pump 6 starts to pump the water in the water tank 1 to the spray washing device 10, so that the spray washing device 10 realizes the self-cleaning function;

B5. After self-cleaning is over, the water pump 6 is turned off, the water tank 1 continues to enter the upper limit water level, and the heating chamber 13 is filled with water, as shown in Figure 12, to prevent the ceramic heater 7 from drying out. Water time, thereby improving the user's spray washing experience.

In this embodiment, the spray washing step includes the following steps:

C1. The user presses the spray button, the water pump 6 and the ceramic heating plate 7 are started. The water in the heating chamber 13 is quickly heated by the ceramic heating plate 7 and is pumped out by the water pump 6, as shown in Figure 13 and Figure 14, and finally from the spray The output of the washing device makes the spray washing device realize the spray washing function of hip washing or feminine washing;

C2. Detect whether the water in the water tank 1 is below the lower limit water level (the lower limit water level of the water tank is detected by the low level probe 11), as shown in Figure 15, if yes, add water to the water tank 1 until the upper limit water level of the water tank 1 is detected (The upper limit water level of the water tank is detected by the high level probe 12); this step can be repeated in multiple cycles until the spraying is completed;

C3. After spraying is finished, the solenoid valve is closed, the water intake is stopped, the ceramic heating plate 7 stops heating, the water pump 6 is turned off after a delay, and the remaining water in the water tank 1 is discharged.

In this embodiment, in the self-inspection link, if the upper limit water level detection fails, the controller judges that the solenoid valve is open, so the water inlet pipe 3 maintains the water inlet state, and the excess water is discharged from the overflow pipe 2, as shown in Figure 16. , And when the user presses the stop button, the solenoid valve is closed with a delay of 2 seconds to stop the water intake. In this way, dry burning of the ceramic heating element can be avoided.

In this embodiment, during the spray washing process, if the detection of the lower limit water level and/or the upper limit water level fails, the controller determines that the solenoid valve is open, so the water inlet pipe 3 maintains the water inlet state, and the excess water is discharged from the overflow pipe 2, such as As shown in Figure 16, and when the user presses the stop button, the solenoid valve is closed with a delay of 2 seconds to stop the water intake. In this way, dry burning of the ceramic heating element can be avoided, and the spray cleaning function can be used normally.

During the spray washing process, when there is a sudden power cut/water cut, the siphon phenomenon formed by the height difference △h between the bottom end of the suction pipe 5 (the bottom end of the suction pipe is the suction port) and the self-cleaning water outlet 101 of the spray washing device, Drain the remaining water in the water tank 1, as shown in Figure 17, so as to prevent the equipment from stopping due to a sudden power/water cut, and the remaining water in the water tank cannot be discharged.

In the self-checking method and working method of the sanitary cleaning device of the present invention, the parts not involved in the sanitary cleaning device (for example, the structure of the spray cleaning device, etc.) are the same as the prior art or can be implemented by the prior art. The structure of the sanitary cleaning device is not limited to this embodiment.

The above-mentioned embodiments are only used to further illustrate the self-checking method and working method of a sanitary cleaning device of the present invention, but the present invention is not limited to the embodiments, and any simple modification made to the above embodiments based on the technical essence of the present invention , Equivalent changes and modifications fall within the protection scope of the technical solution of the present invention.

Industrial applicability

The working method of a sanitary cleaning device of the present invention includes a self-inspection link, a self-cleaning link, and a spray washing link. The self-inspection method can accurately detect whether the water tank can enter water normally, and avoid the failure of the water intake function to cause subsequent failure to normal use. At the same time, after the water enters, the water pump is used to drain the water in the water tank to avoid a large amount of water in the water tank during non-use periods, so as to prevent the water tank from freezing and cracking and growing bacteria. The self-cleaning link can perform the self-cleaning function, and when the self-cleaning is finished, the water tank and the heating chamber of the heating device are filled with water. On the one hand, it can prevent the heater from drying out, and on the other hand, it can reduce the waiting time when spraying is started. Water time, thereby improving the user's spray washing experience, with industrial applicability.

Claims

A self-inspection method of a sanitary cleaning device, which includes a water tank for storing cleaning water, a heating device for heating the cleaning water, a water pump for transporting the cleaning water, and a spray for spraying the cleaning water. Washing device; characterized in that: the self-checking steps are:

A1. Turn on the water inlet, and the water enters the water tank;

A2. Determine whether the first preset water level of the water tank is detected within the preset time, if yes, go to step A3, otherwise go to step A4;

A3. When the water intake of the water tank reaches the preset value, stop the water intake and start the water pump to discharge the water in the water tank;

A4. Start the alarm.
The self-checking method of the sanitary cleaning device according to claim 1, wherein the first preset water level is the lower limit water level of the water tank, and when the lower limit water level of the water tank is detected, water is continuously fed into the water tank within a predetermined time , So that the water inlet of the water tank reaches the preset value.
The self-checking method of the sanitary cleaning device according to claim 1, wherein the first preset water level is the upper limit water level of the water tank, and when the upper limit water level of the water tank is detected, the water inlet of the water tank reaches the preset value .
The self-inspection method of the sanitary cleaning device according to claim 1, wherein the self-inspection method is a self-inspection method of power-on for the first time.
The self-inspection method of the sanitary cleaning device according to claim 1, wherein the heating cavity of the heating device is provided on the top of the water tank, and a water pumping pipe is arranged in the water tank, and the top of the water pumping pipe is connected to the heating cavity of the heating device. The bottom end of the water pumping pipe is lower than the lower limit water level of the water tank, and the bottom end of the water pumping pipe is higher than the self-cleaning water outlet of the spray washing device.
A working method of a sanitary cleaning device includes a self-inspection link, a self-cleaning link, and a spray cleaning link. Inspection method.
The working method according to claim 6, characterized in that: the self-cleaning step includes the following steps:

B1. Detect whether the person is sitting on the toilet, if yes, go to step B2, otherwise repeat this step:

B2, water into the water tank;

B3. Detect whether the water in the water tank reaches the second preset water level, if yes, go to step B4, otherwise go back to step B2;

B4. The water pump is started, and the water in the water tank is pumped to the spray washing device, so that the spray washing device realizes the self-cleaning function;

B5. After self-cleaning is over, the water pump is turned off, the water tank continues to enter the upper limit water level, and the heating chamber of the heating device is filled with water.
The working method of the sanitary cleaning device according to claim 6 or 7, characterized in that: the spray cleaning step includes the following steps:

C1. The water pump and the heater of the heating device are activated, and the heated water is output to the spray washing device, so that the spray washing device realizes the spray washing function;

C2. Detect whether the water in the water tank is below the lower limit water level, and if so, add water to the water tank until the upper limit water level of the water tank is detected;

C3. After spraying and washing, stop the water inlet, the heater is turned off, the water pump is turned off after a delay, and the remaining water in the water tank is discharged.
The working method of the sanitary cleaning device according to claim 7, characterized in that: in the self-checking link, if the upper limit water level detection fails, the water tank remains in a water inlet state, and excess water flows from the overflow port or overflow provided in the water tank The pipe is discharged, and when the user presses the stop button, the water inflow is stopped immediately or after a delay; the second preset water level is the lower limit water level.
The working method of the sanitary cleaning device according to claim 8, characterized in that: in the spraying link, if the detection of the lower limit water level and/or the upper limit water level fails, the water tank remains in a water-in state, and excess water overflows from the water tank. The orifice or overflow pipe is discharged, and when the user presses the stop button, the water intake is stopped immediately or with a delay; if the lower limit water level is not detected, the water pump and the heater are turned off.