Pressure relief working steps of an electric toilet

Abstract

The present invention provides a pressure relief working step of an electric toilet, the electric toilet comprises a water inlet valve, a pressure-bearing water storage tank, a water pump, a water diverter valve, a cleaning component, a self-cleaning structure and a controller, the cleaning component comprises a spray rod and a motor driving the spray rod to extend and retract, the water diverter valve is provided with an opening and closing member and a driving motor capable of switching its water inlet to be connected to each water outlet, and the pressure relief working step of the electric toilet is as follows: S1: receiving a stop cleaning instruction; S2: controlling the water inlet valve to close, and controlling the driving motor to drive the opening and closing member to rotate to connect the water inlet of the water diverter valve with the water outlet of the water diverter valve; S3: controlling the water pump to start working, and controlling the motor to drive the spray rod to retract to a reset position; S4: controlling the water pump to stop working, and controlling the water inlet of the water diverter valve to maintain being connected with the water outlet of the water diverter valve. The electric toilet of this design realizes the pressure relief of the water storage tank by controlling the work of the water diverter valve, the cleaning component, the water pump and other parts, and its internal pipeline layout is simple, which is conducive to optimizing and reducing its volume.

Description

Technical Field

[0001] The invention relates to the technical field of electric toilets, and in particular to a pressure relief working step of an electric toilet. Background Art

[0002] There are two main types of water tanks currently used in electric toilets: non-pressure water tanks and pressure water tanks. Non-pressure water tanks are mainly used for heat storage electric toilets; pressure water tanks are mainly used for instant electric toilets. Pressure water tanks are under pressure inside, and the water pressure of tap water can be effectively used during cleaning. However, after the toilet with a pressure water tank is cleaned and the water tank is filled with water, the water diversion valves installed upstream of the water tank and the water diversion valves installed downstream of the water tank are both in a closed state. The water tank is under pressure for a long time, which is prone to cracking and causing water leakage. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a pressure relief working procedure for an electric toilet.

[0004] The technical solution adopted by the present invention is:

[0005] A pressure relief working step of an electric toilet, the electric toilet comprises a water inlet valve, a pressure-bearing water storage tank, a water pump, a water diverter valve, a cleaning component, a self-cleaning structure for self-cleaning of the cleaning component and a controller, the water inlet of the pressure-bearing water storage tank is externally connected to a water supply pipe through the water inlet valve, the water outlet of the water diverter valve is connected to the water inlet of the water diverter valve after being connected to the water pump through a hose, one of the water outlets of the water diverter valve is connected to the self-cleaning structure, and the other water outlets are connected to the cleaning component, the cleaning component comprises a spray rod and a motor for driving the spray rod to telescopic movement, the water diverter valve is provided with an opening and closing member capable of switching its water inlet to be connected to each water outlet and a driving motor for driving the opening and closing member to rotate, and the characteristics are as follows:

[0006] S1: receiving a stop cleaning instruction;

[0007] S2: Control the water inlet valve to close, and control the drive motor to drive the opening and closing member to rotate to connect the water inlet of the water diversion valve with the water outlet of the water diversion valve;

[0008] S3: Control the water pump to start working, and control the motor to drive the spray rod to retract to the reset position;

[0009] S4: Control the water pump to stop working, and control the water inlet of the water diverter valve to maintain communication with the water outlet of the water diverter valve; wherein the water outlet of the water diverter valve refers to the water outlet in the water diverter valve connected to the self-cleaning structure.

[0010] The pressure relief working steps of the electric toilet of the present invention are as follows: when cleaning is completed, the water inlet valve is controlled to be closed, and the water diversion valve is switched to be connected with the self-cleaning structure, and the water pump is started to pump the water in the water tank to the self-cleaning structure for discharge, thereby reducing the pressure in the cavity of the water tank. After the electric toilet has completed pumping and the water pump has stopped working, the water diversion valve continues to maintain the state of connecting its water inlet with the water outlet connected with the self-cleaning structure, and the water tank is connected with the atmosphere, thereby reducing the pressure in the cavity of the water tank.

[0011] Furthermore, the water pump is controlled to stop working specifically as follows:

[0012] S41: The operation of the water pump is controlled by the time parameter. The working time is calculated from the time when the water pump starts working. When the working time of the water pump reaches the preset value, the water pump is controlled to stop working. This design uses the time parameter to control the water pump to extract water from the water tank for pressure relief. It does not need to set up other sensors for starting and stopping the water pump during pressure relief, which is more conducive to optimizing the design of the internal structure of the toilet and reducing the size of the electric toilet.

[0013] Furthermore, the preset time value is greater than the time value required for the spray bar to retract from the extended extreme position to the reset position. This design ensures that the spray bar and the nozzle can be self-cleaned during the pressure relief process after stopping cleaning.

[0014] Furthermore, maintaining the water inlet of the water diverter valve in communication with the water outlet of the water diverter valve is specifically as follows:

[0015] S42: Control the drive motor to rotate the opening and closing member from the position of S2 to the reset position;

[0016] S43: Control the driving motor to rotate the opening and closing member from the reset position to a position where the water inlet of the water diverter valve is connected to the water outlet of the water diverter valve, and control the opening and closing member to stay at this position. The advantage of this design is that the position error generated by the opening and closing member during the working rotation process is eliminated, so that the opening and closing member can more accurately connect the water inlet of the water diverter valve with the water outlet connected to the water diverter valve and the self-cleaning structure.

[0017] Furthermore, the electric toilet also includes a leak-proof component disposed between the water outlet of the water diverter valve and the self-cleaning structure. The electric toilet is provided with a leak-proof component between the water outlet of the water diverter valve and the self-cleaning structure to prevent the water in the pressure-bearing water tank from flowing to the self-cleaning structure and leaking out. The water on the water supply pipe of the water inlet valve passes through the water inlet valve and enters the water tank. When the water pressure in the water tank cavity is too high, the water can rush through the leak-proof component to release the pressure, thereby protecting the water tank.

[0018] Furthermore, the anti-leakage component includes a three-way joint, an exhaust port arranged on the top of the pressure-bearing water tank, and a sealing plug that floats up and closes the exhaust port when the pressure-bearing water tank is full of water. One of the interfaces of the three-way joint is connected to the exhaust port via a hose, the second interface thereof is connected to the self-cleaning structure via a hose, and the third interface thereof is connected to the water outlet of the water diversion valve via a hose. The design uses a three-way joint to connect the exhaust port of the pressure-bearing water tank, the self-cleaning structure and the water outlet of the water diversion valve. After the electric toilet has completed the pressure relief, if the liquid level in the water tank is higher than the outlet height of the self-cleaning structure, the liquid in the water tank flows out through the water diversion valve and the three-way joint under the action of the pressure difference. Because water is flowing, when water passes through the three-way joint, the joint connected to the exhaust port generates suction. Under the action of the suction, the gas in the water tank enters the cavity of the three-way joint through the exhaust port and the hose, thereby blocking the water from flowing out through the three-way joint, solving the problem of water leakage of the self-cleaning structure in standby mode. In addition, the component is small in size, which has a positive effect on optimizing the design of the internal structure of the toilet and reducing the size of the electric toilet.

[0019] Furthermore, when any interface of the three-way joint is in the assembled state, the height from the horizontal plane is greater than the height from the liquid level in the pressure water tank to the horizontal plane when the pressure water tank is full. This design places the three-way joint above the liquid level in the pressure water tank, which is beneficial to reducing the pressure difference between the water tank and the three-way joint, and is beneficial to preventing the water in the pressure water tank from rushing through the three-way joint, thereby preventing water leakage.

[0020] Furthermore, the anti-leakage component is a drainage pressure relief valve, which includes a valve body with a water inlet, a valve cover connected to the valve body to form a valve body cavity, a valve core, a spring and a stopper sequentially arranged in the valve body cavity, the valve core blocks the water inlet under the tight connection of the spring, the water inlet is connected to one of the water outlets of the water diverter valve, the valve cover is provided with a drainage port, and the drainage port is connected to the self-cleaning structure. This design only requires a drainage pressure relief valve to be provided between the water outlet of the water diverter valve and the self-cleaning structure, and does not require an additional hose connection, which is conducive to simplifying the layout and connection of the internal pipes of the toilet.

[0021] Furthermore, the electric toilet also includes a toilet and a base, the toilet is provided with an opening, the base is installed on the opening, and includes a mounting plate supported on the end surface of the toilet and a base cavity embedded in the opening, and a pressure-bearing water tank and a water pump are fixedly installed in the base cavity. This design embeds the base in the opening of the toilet for installation, which is conducive to reducing the overall height of the toilet and saving the installation space of the toilet.

[0022] Furthermore, in the assembled state, the distances from the top of the pressure-bearing water tank, the end face of the toilet, the water outlet of the self-cleaning structure and the water outlet of the pressure-bearing water tank to the horizontal plane are respectively the first distance, the second distance, the third distance and the fourth distance, wherein the first distance is greater than the second distance, the second distance is greater than the third distance, and the third distance is greater than the fourth distance. This design is conducive to the layout of the parts of the electric toilet, and while increasing the volume of the pressure-bearing water tank, it reduces the pressure difference between the pressure-bearing water tank and the self-cleaning structure, which is conducive to preventing water leakage of the self-cleaning structure.

[0023] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a simplified flow chart of the pressure relief of the water tank of the electric toilet of the present invention;

[0025] Figure 2 The present invention Figure 1 Specific implementation flow chart of step S4;

[0026] Figure 3 is a control block diagram of the electric toilet of the present invention;

[0027] Figure 4 is a schematic cross-sectional view of an electric toilet according to a first embodiment of the present invention;

[0028] Figure 5 yes Figure 4 A partial enlarged view of point A;

[0029] Figure 6 It is a schematic diagram of the structure of the cleaning assembly of the present invention;

[0030] Figure 7 is a cross-sectional view of the water diverter valve of the present invention;

[0031] Figure 8 is a schematic cross-sectional view of an electric toilet according to a second embodiment of the present invention;

[0032] Fig. 9 is a cross-sectional view of the drainage pressure relief valve in the second embodiment of the invention;

[0033] Among them: 10-water inlet valve, 20-pressure water storage tank, 21-water inlet, 22-water outlet, 30-water pump, 40-water diverter valve, 41-water inlet, 42-first water outlet, 43-second water outlet, 44-third water outlet, 45-fourth water outlet, 46-opening and closing parts, 50-cleaning components, 51-spray rod, 51.1-connecting pipe, 51.2-pipe sleeve, 52-nozzle, 53-motor, 54-bracket, 60-self-cleaning structure, 61-hollow ring, 62-self-cleaning water inlet, 70-leakage-proof component, 71-tee joint, 71.1- First interface, 71.2-second interface, 71.3-third interface, 72-exhaust port, 73-sealing plug, 70′-leakage-proof component, 71′-valve body, 72′-valve cover, 73′-valve core, 73.1′-sealing head, 73.2′-valve core boss, 74′-spring, 75′-stopper, 75.1′-stopper boss, 76′-valve body cavity, 77′-water inlet, 78′-drain port, 80-instantaneous heater, 90-toilet, 91-opening, 100-machine base, 110-mounting plate, 120-machine base cavity, 130-controller DETAILED DESCRIPTION

[0034] Embodiment 1:

[0035] See also Figures 1 to 7 The present invention provides a pressure relief working step of an electric toilet, which includes a water inlet valve 10, a pressure-bearing water storage tank 20, a water pump 30, a water diverter valve 40, a cleaning component 50, a self-cleaning structure 60 for self-cleaning of the cleaning component, a controller 130, and a remote controller or an input keypad (not shown). The water diverter valve 40 includes a water inlet 41 and a water outlet. The water diverter valve has at least two water outlets, one of which is used to connect to the self-cleaning structure 60 and supply water to the self-cleaning structure 60, and the other water outlets are used to connect to the cleaning component 50 and supply water to it. The pressure-bearing water storage tank 20 is provided with a water inlet 21 and a water outlet 22. The water inlet 21 is connected to a water supply pipe through the water inlet valve 10, and the water outlet 22 is connected to the water pump 30 through a hose and then leads to the water inlet 41 of the water diverter valve.

[0036] See Figure 7 As a preferred embodiment of the water diverter valve of the present invention, the water diverter valve 40 includes a valve seat 48, a shell 49 sealed with the valve seat 48, an opening and closing member 46, and a driving motor 47 fixed on the shell 49 for driving the opening and closing member 46 to rotate. Among them, the water inlet 41 is arranged on the shell 49, the water outlet is arranged on the valve seat 48, and the opening and closing member 46 is provided with an axial through hole which can be connected with the water outlet. The working principle of the water diverter valve is the same as the working principle of the valve with the prior application patent number: CN201811487772.7. The opening and closing member 46 rotates driven by the driving motor 47, and the water diverter valve switches the water inlet 41 of the water diverter valve to be connected with any water outlet on the valve seat 48 during the rotation of the opening and closing member 46. See Figure 3 As a specific implementation of the water diverter valve of the present invention, the water diverter valve has four water outlets, including a first water outlet 42, a second water outlet 43, a third water outlet 44, and a fourth water outlet 45, wherein the first water outlet 42 is connected to the self-cleaning structure 60 and supplies water thereto, and the second to fourth water outlets are connected to the cleaning assembly 50 and supply water thereto. The cleaning assembly 50 includes a spray rod 51 and a motor 53 that drives the spray rod to extend and retract. The controller 130 obtains an execution signal through a remote controller or an input keypad and executes corresponding working steps, such as the pressure relief working steps of the electric toilet of the present invention are as follows:

[0037] S1: Get the instruction to stop cleaning

[0038] S2: Control the water inlet valve 10 to close, and control the driving motor 47 to drive the opening and closing member 46 to rotate to connect the water inlet 41 of the water diverter valve with the first water outlet 42 of the water diverter valve, so that water enters the water diverter valve from the water inlet 41 of the water diverter valve, and then is discharged from the first water outlet 42 of the water diverter valve;

[0039] S3: Control the water pump 30 to start working, and control the motor 53 to drive the spray rod 51 to retract to the reset position;

[0040] S4: Control the water pump 30 to stop working, and maintain the water inlet 41 of the water diversion valve connected to the water outlet 42 of the water diversion valve.

[0041] The pressure relief working steps of the electric toilet of the present invention are as follows: when cleaning is completed, the water inlet valve is controlled to be closed, and the water diversion valve is switched to be connected with the self-cleaning structure, and the water pump is started to pump the water in the water tank to the self-cleaning structure for discharge, thereby reducing the pressure in the cavity of the water tank. After the electric toilet has completed pumping and the water pump has stopped working, the water diversion valve continues to maintain the state of connecting its water inlet with the water outlet connected with the self-cleaning structure, and the water tank is connected with the atmosphere, thereby reducing the pressure in the cavity of the water tank.

[0042] Preferably, in step S4, controlling the water pump 30 to stop working is specifically as follows:

[0043] S41: Control the operation of the water pump with time parameters, calculate the working time from the start of the water pump 30, and control the water pump 30 to stop working when the working time of the water pump 30 reaches the preset value. This design uses time parameters to control the water pump to extract water from the water tank for pressure relief. It does not need to set up other sensors for starting and stopping the water pump during pressure relief, which is more conducive to optimizing the design of the internal structure of the toilet and reducing the volume of the electric toilet. As a preferred implementation of the time parameter control, the preset value of the time in this design is T, where the preset value T is a value greater than the time T1 required for the spray rod 51 to retract from the extended extreme position to the reset position. Among them, the preset value T of the time in this embodiment is 6s. This design can ensure that after stopping cleaning, the spray rod and nozzle can be self-cleaned during the pressure relief process.

[0044] Furthermore, in step S4, maintaining the water inlet 41 of the water diverter valve in communication with the water outlet 42 of the water diverter valve is specifically as follows:

[0045] S42: Control the driving motor 47 to drive the opening and closing member 46 to rotate from the position of S2 to the reset position;

[0046] S43: Control the drive motor 47 to drive the opening and closing member 46 to rotate from the above-mentioned reset position to a position where the water inlet 41 of the water diverter valve is connected to the water outlet 42 of the water diverter valve, and control the opening and closing member 46 to stay in this position, so that the water inlet 41 of the water diverter valve and the first water outlet 42 are in a connected state after cleaning. The advantage of this design is to eliminate the position error of the opening and closing member during the rotation process, so that the opening and closing member can more accurately connect the water inlet of the water diverter valve to the water outlet connected to the water diverter valve and the self-cleaning structure. As another implementation example, the drive motor 47 can be maintained in a stopped state after completing the working step of S2, so that the water inlet 41 of the water diverter valve and the first water outlet 42 are in a connected state after cleaning.

[0047] See Figure 4 In order to prevent the water in the pressure-bearing water tank 20 from flowing into the self-cleaning structure 60 and leaking out, the electric toilet further includes a leak-proof component 70 disposed between the water outlet 42 of the water diversion valve and the self-cleaning structure 60 .

[0048] See Figure 4 and Figure 5 As one embodiment of the leakage prevention component, it includes a three-way joint 71, an exhaust port 72 arranged on the top of the water tank and a sealing plug 73 matched with the exhaust port. The first interface 71.1 of the three-way joint is connected to the exhaust port 72 via a hose, the second interface 71.2 is connected to the self-cleaning structure 60 via a hose, and the third interface 71.3 is connected to the water outlet 42 of the water diversion valve via a hose. The sealing plug 73 is configured to float and close the exhaust port 72 when the water level in the water tank 10 is full. The exhaust port 72 and the sealing plug 73 constitute the automatic exhaust of the pressure-bearing water tank. When the electric toilet completes self-cleaning and is in standby mode, the liquid level in the water tank is higher than the outlet height of the self-cleaning structure, and the liquid in the water tank flows out through the water diversion valve and the three-way joint under the action of the pressure difference. Because water is flowing, when water passes through the three-way joint, the joint connected to the exhaust port generates suction. Under the action of the suction, the gas in the water tank enters the cavity of the three-way joint through the exhaust port and the hose, thereby preventing the water from flowing out through the three-way joint, solving the problem of water leakage in the self-cleaning structure when in the normally open state.

[0049] See Figure 4, in order to reduce the pressure difference between the water storage tank 20 and the three-way joint 71, to prevent the water in the water storage tank from rushing through the three-way joint and leaking under normal water inflow. In the assembled state, the lowest height value of the three-way joint 71 from the horizontal plane S is L2, and the height value from the liquid level in the cavity to the horizontal plane S when the water storage tank 20 is full is L1, and the height value of L2 is set to be greater than the height value of L1.

[0050] See Figure 4 The toilet of the present invention further comprises a toilet 90 and a base 100. An opening 91 is arranged on the end surface of the toilet. The base 100 is mounted on the opening 91 and comprises a mounting plate 110 supported on the end surface of the toilet and a base cavity 120 embedded in the opening. The water storage tank 20 and the water pump 30 are fixedly mounted in the base cavity 120. This design embeds the base in the opening of the toilet for installation, which is conducive to reducing the overall height of the toilet and saving the installation space of the toilet.

[0051] See Figure 4 In the assembled state, the distances from the top of the water tank, the end face of the toilet, the water outlet of the self-cleaning structure, and the water outlet of the water tank to the horizontal plane S are respectively the first distance H1, the second distance H2, the third distance H3, and the fourth distance H4, wherein the first distance H1 is greater than the second distance H2, the second distance H2 is greater than the third distance H3, and the third distance H3 is greater than the fourth distance H4. This design is conducive to the layout of the parts of the electric toilet, while increasing the volume of the water tank and reducing the pressure difference between the water tank and the self-cleaning structure, which is conducive to preventing water from flushing the anti-leakage component in the water tank and causing water leakage.

[0052] See Figure 6 As a preferred embodiment of the cleaning assembly of the present invention, the cleaning assembly 50 includes a spray bar 51, a nozzle 52, a bracket 54, and a motor 53 fixed on the bracket to drive the spray bar 51 to telescopically move. The spray bar 51 includes a connecting pipe 51.1 and a pipe sleeve 51.2, and the nozzle 52 is fixed at one end of the pipe sleeve 51.2. As another embodiment, the spray bar 51 can be designed as a channel with water supply circulation as described in patent number CN101886420B, the nozzle is fixed on one side of the spray bar, and the water diversion valve is fixed on the other side of the spray bar.

[0053] See Figure 6 The self-cleaning structure 60 of the present invention includes a hollow ring 61 for the nozzle 52 and the spray rod 51 to pass through. The surface of the hollow ring facing the nozzle and the spray rod is provided with holes for spraying water out of the cavity of the hollow ring. The outer surface of the hollow ring is provided with a self-cleaning water inlet 62 connected with the first water outlet 42 of the water diversion valve for supplying water to the cavity of the hollow ring.

[0054] See Figure 7As a preferred embodiment of the water diverter valve, the water diverter valve 40 includes a valve seat 48, a housing 49, an opening and closing member 46, and a driving motor 47 fixed on the housing 49 to drive the opening and closing member 46 to rotate. The water inlet 41 is arranged on the housing 49, the water outlet is arranged on the valve seat 48, the opening and closing member 46 is provided with an axial through hole that can be communicated with the water outlet, and the opening and closing member 46 can switch the water inlet 41 to be connected with the water outlet on the valve seat 48 under the drive of the driving motor 47.

[0055] Embodiment 2:

[0056] See Figure 8 and 9 Compared with the first embodiment, the leakage-proof component of this embodiment is a drainage pressure relief valve 70', which includes a valve body 71' with a water inlet 77', a valve cover 72' with a water outlet 78', a valve core 73', a spring 74' and a stopper 75', wherein the valve body 71' and the valve cover 72' are connected to form a valve body cavity 76', and the valve core 73', the spring 74' and the stopper 75' are sequentially arranged in the valve body cavity 76'. The valve core 73' includes a sealing head 73.1' for blocking the water inlet 77' and a valve core boss 73.2' for the spring to be inserted. The stopper 75' is fixedly installed on the valve body cavity 76', and is provided with a stopper boss 75.1'. During installation, one end of the spring 74' is sleeved on the valve core boss 73.2', and the other end is sleeved on the stopper boss 75.1', ​​and the valve core 73' uses the sealing head 73.1' to block the water inlet 77' under the tight connection of the spring 74'. Figure 8 , the water circuit of the electric toilet is connected, the water inlet 77' of the leak-proof component 70' is connected to the first water outlet 42 of the water diverter valve, and the drain outlet 78' of the leak-proof component is connected to the self-cleaning structure 60. Because the valve core of the drainage pressure relief valve is elastic and movably arranged on the valve body cavity to block the water inlet, when the pressure in the water tank cavity is less than the pressure in the cavity when the water tank is full of water, the drainage pressure relief valve blocks the hose connecting the water diverter valve and the self-cleaning structure to prevent water leakage. When the pressure in the water storage cavity is greater than the pressure in the cavity when the water tank is full of water, the liquid in the water storage cavity can be conducted to the drainage pressure relief valve through the soft channel and the valve core that blocks the water inlet is pushed open to release the pressure, thereby reducing the pressure in the water tank cavity. As a preferred solution of this embodiment, the preferred value of the opening pressure of the drainage pressure relief valve is 15KPa-25KPa. This design only requires a drainage pressure relief valve to be provided between the water outlet of the water diversion valve and the self-cleaning structure. Compared with the first embodiment, no additional hose connection is required, which helps to simplify the layout and connection of the internal pipes of the toilet.

[0057] The present invention is not limited to the above-mentioned embodiments. If various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, and if these changes and modifications fall within the scope of the claims and equivalent technologies of the present invention, the present invention is also intended to include these changes and modifications.

Claims

1. A pressure relief method for an electric toilet, the electric toilet comprising a water inlet valve (10), a pressure-bearing water storage tank (20), a water pump (30), a water distribution valve (40), a cleaning component (50), a self-cleaning structure (60) for self-cleaning the cleaning component, and a controller (130), wherein the water inlet (21) of the pressure-bearing water storage tank is connected to an external water supply pipe via the water inlet valve (10), and the water outlet (22) of the pressure-bearing water storage tank is connected to the water pump (30) via a hose and then leads to the water distribution valve (40). The water inlet (41) of the water valve and the first water outlet (42) of the water diverter valve are connected to the self-cleaning structure (60), and the remaining water outlets are connected to the cleaning assembly (50), the cleaning assembly (50) comprises a spray rod (51) and a motor (53) for driving the spray rod to telescope, the water diverter valve (40) is provided with an opening and closing member (46) capable of switching the water inlet (41) of the water diverter valve to be connected to each water outlet and a driving motor (47) for driving the opening and closing member to rotate, and is characterized in that: In the assembled state, the distances from the top of the pressure-bearing water tank, the end surface of the toilet bowl, the water outlet of the self-cleaning structure and the water outlet of the pressure-bearing water tank to the horizontal plane are respectively a first distance (H1), a second distance (H2), a third distance (H3) and a fourth distance (H4); the first distance (H1) is greater than the second distance (H2), the second distance (H2) is greater than the third distance (H3), and the third distance (H3) is greater than the fourth distance (H4); the electric toilet further comprises a first leak-proof component (70) or a second leak-proof component (70´) arranged between the first water outlet (42) of the water diversion valve and the self-cleaning structure (60); the first leak-proof component (70) comprises a three-way joint (71), an exhaust port (72) arranged at the top of the pressure-bearing water tank and a sealing plug (73) which floats up and closes the exhaust port (72) when the water in the pressure-bearing water tank (20) is full; the first interface (71.1) of the three-way joint is connected to the exhaust port (71) via a hose. 2), its second interface (71.2) is connected to the self-cleaning structure (60) via a hose, and its third interface (71.3) is connected to the first water outlet (42) of the water diversion valve via a hose, and in the assembled state, the height (L2) of any interface of the three-way joint to the horizontal plane is greater than the height (L1) from the liquid level in the chamber to the horizontal plane when the pressure-bearing water storage tank is full; the second anti-leakage component (70´) is a drainage pressure relief valve, which includes a valve body (71´) with a water inlet, After the valve bodies are connected, a valve cover (72´) is formed in the valve body cavity, a valve core (73´), a spring (74´) and a stopper (75´) are sequentially arranged in the valve body cavity, the valve core (73´) blocks the water inlet (77´) of the drainage pressure relief valve under the tight connection of the spring (74´), the water inlet (77´) of the drainage pressure relief valve is connected to the first water outlet (42) of the water diversion valve, and the valve cover is provided with a drainage outlet (78´), and the drainage outlet (78´) is connected to the self-cleaning structure (60); The pressure relief method of the electric toilet is as follows: S1: receiving a stop cleaning instruction; S2: controlling the water inlet valve (10) to close, and controlling the drive motor (47) to drive the opening and closing member (46) to rotate so as to connect the water inlet (41) of the water diversion valve with the first water outlet (42) of the water diversion valve; S3: controlling the water pump (30) to start working, and controlling the motor (53) to drive the spray rod (51) to retract to the reset position; S4: Controlling the water pump (30) to stop working, and maintaining the water inlet (41) of the water diversion valve in communication with the first water outlet (42) of the water diversion valve.

2. The pressure relief method for an electric toilet according to claim 1, characterized in that: The specific steps of controlling the water pump to stop working in step S4 are as follows: S41: Controlling the operation of the water pump using a time parameter, calculating the operation time from when the water pump (30) starts to operate, and when the operation time of the water pump (30) reaches a preset value, controlling the water pump (30) to stop operating.

3. The pressure relief method for an electric toilet according to claim 2, characterized in that: The preset value of the time is greater than the time required for the spray rod (51) to retract from the extended extreme position to the reset position.

4. The pressure relief method for an electric toilet according to claim 1 or 2, characterized in that: In step S4, maintaining the water inlet (41) of the water diversion valve in communication with the first water outlet (42) of the water diversion valve is specifically as follows: S42: Control the driving motor (47) and the opening and closing member (46) to rotate from the position of S2 to the reset position; S43: Controlling the driving motor (47) to rotate the opening and closing member (46) from the reset position to a position where the water inlet (41) of the water diversion valve is connected to the first water outlet (42) of the water diversion valve, and controlling the opening and closing member (46) to stay at this position.

5. The pressure relief method for an electric toilet according to claim 1, characterized in that: The electric toilet also includes a toilet bowl (90) and a machine base (100), wherein the toilet bowl is provided with an opening (91), and the machine base (100) is mounted on the opening (91), and comprises a mounting plate (110) supported on the end surface of the toilet bowl and a machine base cavity (120) embedded in the opening, wherein the pressure-bearing water storage tank (20) and the water pump (30) are fixedly mounted in the machine base cavity (120).

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