A flushing control method of a smart toilet and a smart toilet

Abstract

The application discloses a flushing control method of an intelligent closestool and the intelligent closestool. The closestool is internally provided with a water pump, a drainage channel and a washing channel. The motor of the water pump can rotate in a first direction or a second direction. The flushing control method comprises the following processes: controlling the motor to rotate in the second direction, so that the intelligent closestool enters a washing mode; controlling the motor to rotate in the first direction, so that the intelligent closestool enters a drainage mode; wherein the drainage mode is that the water pump drives water flow into the drainage channel to flush the bottom of the closestool seat cavity; the washing mode is that the water pump drives water flow into the washing channel to flush the upper part of the closestool seat cavity; when the first direction is a clockwise direction, the second direction is an anticlockwise direction; when the first direction is an anticlockwise direction, the second direction is a clockwise direction. The water pump motor is reversely rotated, so that the washing and flushing are realized in time, the control is simple and convenient, and the structure is simple.

Description

Technical Field

[0001] This invention relates to the field of bathroom technology, and in particular to a flushing control method for an intelligent toilet and an intelligent toilet. Background Technology

[0002] Existing smart toilet designs require washing and flushing. Washing is controlled by a scrubbing pump to clean the toilet bowl walls, while flushing uses a bottom-flush pump to remove waste. Because multiple pumps are used, this design requires a large space and is complex to control.

[0003] To overcome the aforementioned problems, invention patent CN115262714A discloses an integrated water fitting with a dual-outlet micro-pump, including a housing, a drainage mechanism, a dual-outlet micro-pump, and a drainage base. The dual-outlet micro-pump splits the water source into two paths, one for drainage and the other for washing. Through its integrated design, the structure is simple and can be used in tankless, small-space sunken smart toilets. However, some existing smart toilets require a washing mechanism that involves washing followed by flushing, meaning the washing and drain outlets must operate at different times. Existing integrated water fittings, however, allow simultaneous water flow from both the washing and drain outlets, failing to meet the requirement of timed water flow. Summary of the Invention

[0004] The purpose of this invention is to provide a flushing control method for an intelligent toilet and an intelligent toilet in general. It uses a single water pump to meet the time-sharing water supply needs of multiple modes of the toilet, and the control is simple and convenient with a minimalist structure.

[0005] To achieve the above objectives, this invention discloses a flushing control method for a smart toilet. The smart toilet is equipped with a water pump, a drainage channel, and a washing channel. The motor of the water pump can rotate in a first direction or a second direction. The flushing control method includes the following processes: controlling the motor to rotate in the second direction to put the smart toilet into a washing mode; controlling the motor to rotate in the first direction to put the smart toilet into a drainage mode; wherein, in the drainage mode, the water pump drives water flow into the drainage channel to flush the bottom of the toilet bowl; in the washing mode, the water pump drives water flow into the washing channel to flush the top of the toilet bowl; when the first direction is clockwise, the second direction is counterclockwise; when the first direction is counterclockwise, the second direction is clockwise.

[0006] The water pump motor is connected to the flushing control circuit, which includes a power supply and signal control module and a water pump drive module. The power supply and signal control module is connected to a power source and transmits start signal, direction control and speed signal to the water pump drive module. The water pump drive module receives the control signal and drives the water pump to rotate in a first direction or a second direction at the corresponding speed.

[0007] In some embodiments, the set steering control and speed signals are achieved by changing the output PWM duty cycle of the power supply and signal control module, thereby controlling the direction and speed of the motor.

[0008] Preferably, the power supply and signal control module includes a first microcontroller, a first MOSFET, a second MOSFET, a power connection line, a ground line, and a signal input line; the drain (D) of the first MOSFET is connected to the ground line, the source (S) is connected to GND, and the gate (G) is connected to the first microcontroller; the drain (D) of the second MOSFET is connected to the signal input line, the source (S) is connected to GND, and the gate (G) is connected to the first microcontroller, and the first microcontroller inputs a PWM duty cycle signal to the second MOSFET; the water pump drive module includes a second microcontroller, a voltage regulator, a signal conversion module, and a drive and inverter circuit; the signal input line transmits the signal to the second microcontroller via the signal conversion module; the power connection line is connected to the voltage regulator, which outputs a stable DC voltage to supply the second microcontroller and the signal conversion module; the power connection line supplies power to the drive and inverter circuit; the second microcontroller is connected to the drive and inverter circuit, and the drive and inverter circuit is connected to the water pump.

[0009] The signal conversion module includes a diode, a first resistor, a second resistor, and a third resistor. The signal input line is connected to the negative terminal of the diode, the positive terminal of the diode is connected to the first resistor to the I / O port of the second microcontroller, the negative terminal of the diode is connected to the second resistor to the power supply connection line, and the positive terminal of the diode is connected to the third resistor to the voltage regulator.

[0010] In other embodiments, a software program is set to detect the number of times the bus voltage drops to calculate the number of times the pulse signal appears, so as to transmit steering control and speed signals, thereby controlling the direction and speed of the motor.

[0011] Preferably, the power supply and signal control module includes a first microcontroller, a MOSFET, a power connection line, and a ground line. The drain (D) terminal of the MOSFET is connected to the ground line, the source (S) terminal is connected to GND, and the gate (G) terminal is connected to the first microcontroller. The water pump drive module includes a second microcontroller, a voltage regulator, and a drive and inverter circuit. The power connection line is connected to the voltage regulator, which outputs a stable DC voltage to supply the second microcontroller. The power connection line supplies power to the drive and inverter circuit. The second microcontroller is connected to the drive and inverter circuit, and the drive and inverter circuit is connected to the water pump.

[0012] Furthermore, the steps for transmitting steering control and speed signals through software programming are as follows: S1. Pre-set different pulse signal cycle numbers to correspond to different motor directions and speeds, and store them in the mapping table accordingly; pre-set the complete cycle time of a pulse as T1, then set the delay count time as T2, and T2 > T1.

[0013] S2. Detect the number of times the bus voltage drops. For each drop, increment the number of pulse signal cycles by 1 and calculate the total number of pulse signals. If no drop in bus voltage is detected within a set delay counting time, it is determined that the calculation has been completed.

[0014] S3. Based on the calculated number of pulse signal cycles, find the corresponding relationship in the mapping table to obtain the corresponding motor direction and speed; and output the steering control and speed signals.

[0015] The water pump drive module receives steering control and speed signals to drive the water pump; otherwise, the water pump remains in standby mode.

[0016] Preferably, a start command and a program command are input, and the corresponding mode is obtained according to the program command. The program command includes one or more of the following: (1) Bottom flush: The toilet enters the flushing mode; (2). Washing water output: The toilet enters the washing mode; (3) Combined flushing: The toilet first enters the washing mode and then the draining mode; The different modes correspond to the steering control signals, which are stored in the mapping table.

[0017] Furthermore, it also includes gear position commands, with different gear position commands corresponding to different speed signals and stored in a mapping table; gear position commands can be set separately or combined with program commands.

[0018] This invention also discloses a smart toilet, which is controlled using the aforementioned flushing control method. The smart toilet includes a toilet body, an inlet valve, a water pump, a drain pipe, and a washing pipe. The toilet body includes a toilet bowl and a water storage container. The water storage container is a water tank or a submerged water chamber. The toilet bowl has washing holes on its wall and a drain outlet at its bottom. The water storage container has a container inlet. The inlet valve is located at the container inlet. The water pump is placed inside the water storage container and includes a pump body, a motor, and an impeller. The pump body has a pump chamber, a drain outlet, a washing outlet, and at least one inlet. The inlet connects to the pump chamber. The impeller is built into the pump chamber. The motor drives the impeller to rotate in a first direction or in a second direction. The drain outlet is connected to one end of the drain pipe, the wash outlet is connected to one end of the wash pipe, and the other end of the drain pipe passes through or over the side wall of the water storage container and connects to the drain outlet of the toilet; the other end of the wash pipe is connected to the wash hole.

[0019] Furthermore, in the drainage pipe and the washing pipe, at least the drainage pipe is provided with an anti-siphon port, and the anti-siphon port is connected to the water storage tank. The anti-siphon port is set higher than the working water level of the water storage tank. The direction of the drainage outlet is the direction of water flow when the motor rotates in the first direction, and the direction of the washing outlet is the direction of water flow when the motor rotates in the second direction.

[0020] Preferably, both the drainage pipe and the washing pipe include an inner pipe, a connecting fitting, and an outer pipe. The inner pipe is placed inside the water tank, and the outer pipe is placed outside the water tank. The inner pipe is connected to the outer pipe via the connecting fitting. The connecting fitting is integrally formed with the water tank, or the connecting fitting is detachably connected to the tank wall, or the connecting fitting is independent of the water tank. The anti-siphon port is provided on the connecting fitting.

[0021] Preferably, an "L"-shaped bend is provided above the connecting pipe fitting, one end of the bend is connected to the inner cavity of the connecting pipe fitting, and the other end of the bend is an anti-siphon port; Preferably, the water tank has a through-hole in the tank wall, the outer diameter of the connecting pipe is adapted to the diameter of the mounting hole, and the connecting pipe is inserted into the mounting hole; both the outer pipe and the inner pipe are inserted into the connecting pipe, and the outer pipe, the bend, and the mounting hole cooperate to limit the connecting pipe to the tank wall of the water tank, or the outer pipe, the inner pipe, and the mounting hole cooperate to limit the connecting pipe to the tank wall of the water tank.

[0022] Furthermore, the water tank is also equipped with an overflow port.

[0023] This invention also discloses a smart toilet, which is controlled using the aforementioned flushing control method. The smart toilet includes a toilet body, a water inlet valve, and an integrated water fitting. The toilet body includes a toilet bowl and a water storage container. The water storage container is a water tank or a submerged water chamber. The toilet bowl has a washing hole on its wall and a drain outlet at its bottom. The water storage container has a container inlet and a container drain outlet. The water inlet valve is located at the container inlet. The integrated water fitting includes a housing, a drainage mechanism, a drainage base, and a water pump. The water pump and drainage mechanism are installed in the inner cavity of the housing. The drainage base is installed below the housing at the container's drain outlet. The housing has a water inlet / outlet hole for water supply. The water pump includes a pump body, a motor, and an impeller. The pump body has a pump chamber, at least one inlet, and at least two sets of outlets. Both the inlet and outlet are connected to the pump chamber. The impeller is built into the pump chamber. The motor drives the impeller to rotate in a first direction or a second direction. The at least two sets of outlets are a drainage outlet and a washing outlet, respectively. The drainage outlet is connected to the drainage mechanism, and the washing outlet is connected to the washing hole through a washing pipe.

[0024] Furthermore, the orientation of the drain outlet is the direction of water flow when the motor rotates in the first direction, and the orientation of the scrubbing outlet is the direction of water flow when the motor rotates in the second direction.

[0025] Based on the above solution, the present invention has the following beneficial effects: The present invention achieves time-sharing water output from different outlets of the water pump by controlling the forward and reverse rotation of the water pump motor, making control simple and convenient. Furthermore, the present invention has high integration, a simple structure, fewer electrical components, fewer potential failure points, and is also more energy-efficient. Attached Figure Description

[0026] Figure 1 This is the circuit schematic diagram for Example 1.

[0027] Figure 2 This is a circuit diagram of the power supply and signal control module of Embodiment 1.

[0028] Figure 3 This is a circuit diagram of the water pump drive module in Embodiment 1.

[0029] Figure 4 This is a circuit diagram of the signal conversion module in Example 1.

[0030] Figure 5 This is the circuit schematic diagram for Example 2.

[0031] Figure 6 This is a circuit diagram of the power supply and signal control module and the water pump drive module in Embodiment 2.

[0032] Figure 7This is a structural diagram of the smart toilet in Example 3.

[0033] Figure 8 This is a structural diagram of the water tank section in Example 3.

[0034] Figure 9 This is a three-dimensional cross-sectional view of the water tank section in Embodiment 3.

[0035] Figure 10 for Figure 9 Enlarged diagram of point A in the middle.

[0036] Figure 11 This is a structural diagram of the smart toilet in Example 4.

[0037] Figure 12 This is a structural diagram of the integrated water fitting in Example 4.

[0038] Figure 13 This is a schematic diagram of the water pump.

[0039] Figure 14 This is a cross-sectional view of the water pump.

[0040] Explanation of symbols for main components: 1: Toilet body; 11: Toilet chamber; 12: Water tank; 121: Mounting hole; 122: Overflow outlet; 13: Recessed water chamber; 14: Washing hole; 15: Drain outlet; 2: Inlet valve; 3: Water pump; 31: Drain outlet; 32: Washing outlet; 33: Inlet; 4: Drain pipe; 5: Washing pipe; 6: Anti-siphon outlet; 7: Integrated water fittings; 71: Housing; 72: Drainage mechanism; 73: Drainage base; 81: Inner pipe; 82: Outer pipe; 83: Connecting fittings; 84: Bend. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0042] This invention discloses a flushing control method for an intelligent toilet. For example... Figure 7 The smart toilet of this invention is equipped with a water pump, a washing channel, and a drainage channel. Depending on the structure of different smart toilets, the drainage channel can be a separate drainage pipe or an internal channel formed by a drainage mechanism (drain valve) connected to the ceramic toilet body. Similarly, the washing channel can be a separate washing pipe or an internal channel formed by a connecting hole in the ceramic toilet body.

[0043] The water pump motor can rotate in either the first or second direction. The smart toilet has the following two modes: 1. Drainage mode: The water pump drives water flow into the drainage channel to flush the bottom of the toilet bowl.

[0044] 2. Washing mode: The water pump drives water flow into the washing channel to flush the top of the toilet bowl.

[0045] The flushing modes of a smart toilet include a drainage mode and a washing mode. The main principle and steps of the flushing control method are as follows: control the water pump motor to rotate in the second direction to put the smart toilet into the washing mode; control the water pump motor to rotate in the first direction to put the smart toilet into the drainage mode.

[0046] When the first direction is clockwise (forward direction of the water pump motor), the second direction is counterclockwise (reverse direction of the water pump motor); when the first direction is counterclockwise, the second direction is clockwise.

[0047] The water pump has two outlets: a drain outlet and a wash outlet. When the water pump motor is controlled to rotate in the second direction, putting the smart toilet into wash mode, water flows out through the wash outlet. When the water pump motor is controlled to rotate in the first direction, putting the smart toilet into drain mode, water flows out through the drain outlet.

[0048] The water pump motor is connected to the flushing control circuit, which includes a power supply and signal control module and a water pump drive module. The power supply and signal control module is connected to a power source and transmits start signals, steering control signals, and speed signals to the water pump drive module. The water pump drive module receives the control signals and drives the water pump to rotate in the first or second direction at the corresponding speed. The transmission of start signals, steering control signals, and speed signals can be achieved using hardware control methods for electronic signal transmission or software methods for signal transmission, as described below with reference to specific embodiments.

[0049] Example 1 This embodiment discloses a flushing control method for a smart toilet. The method uses hardware control to transmit signals. Specifically, it achieves the set steering control and speed signals by changing the output PWM duty cycle of the power supply and signal control module, thereby controlling the direction and speed of the motor.

[0050] like Figure 1 As shown, the flushing control circuit includes a power supply and signal control module and a water pump drive module. Figure 2 As shown, the power supply and signal control module includes a first microcontroller (U1), a first MOSFET (M1), a second MOSFET (M2), a power connection line (VCC), a ground line, and a signal input line (SI).

[0051] The drain (D) of the first MOSFET (M1) is connected to the ground line, the source (S) is connected to GND, and the gate (G) is connected to pin U1-1 of the first microcontroller U1.

[0052] The drain (D) of the second MOSFET (M2) is connected to the signal input line SI, the source (S) is connected to GND, and the gate (G) is connected to pin U1-2 of the first microcontroller U1. The first microcontroller inputs the PWM duty cycle signal to the second MOSFET (M2).

[0053] like Figure 3 As shown, the water pump drive module includes a second microcontroller (U2), a voltage regulator (LDO), a signal conversion module, and a drive and inverter circuit.

[0054] The signal input line (VCC) transmits the signal to the second microcontroller (U2) via the signal conversion module. The power supply line (VCC) is connected to a voltage regulator (LDO), which outputs a stable DC voltage (such as 5V or 3.3V) to power the second microcontroller and the signal conversion module. The power supply line also supplies power to the drive and inverter circuits, which are existing conventional circuits, such as those with publication numbers CN221126896U and CN114204785A, and will not be described in detail here. The second microcontroller is connected to the drive and inverter circuits, which in turn are connected to the water pump to drive its rotation.

[0055] like Figure 4 As shown, the signal conversion module includes a diode (D1), a first resistor (R11), a second resistor (R9), and a third resistor (R10). The signal input line is connected to the negative terminal of the diode (D1). The positive terminal of the diode is connected to the first resistor to the IO port (U2-IO) of the second microcontroller. The negative terminal of the diode is connected to the second resistor (R9) to the power supply connection line. The positive terminal of the diode is connected to the third resistor (R10) to the voltage regulator (5V).

[0056] When the gate drive signal of the first MOSFET is high, the drain and source of the first MOSFET is turned on. At this time, the operating current flows from VCC into the water pump and then flows back to the power supply through GND to provide the power supply voltage for the water pump.

[0057] When the gate (G) drive signal of the second MOSFET is high, the drain (DS) terminal of the second MOSFET is turned on. At this time, the signal input line is grounded, and after passing through the signal conversion circuit, the signal input to the second microcontroller is low. When the drive signal of the second MOSFET is low, the drain (DS) terminal is not turned on. At this time, the signal input line is floating, and after passing through the signal conversion circuit, the signal input to the second microcontroller is high. The signal conversion module can protect the second microcontroller. By inputting pulse signals with different duty cycles from the gate (G) terminal of the second MOSFET into the second microcontroller, the motor speed and direction can be adjusted.

[0058] Example 2 This embodiment discloses a flushing control method for an intelligent toilet, which uses software control for signal transmission. Specifically, by setting a software program, the number of times the bus voltage drops is detected to calculate the number of pulse signal occurrences, thereby transmitting steering control and speed signals to control the motor's direction and speed.

[0059] like Figure 5 As shown, the flushing control circuit includes a power supply and signal control module and a water pump drive module. Figure 6 As shown, the power supply and signal control module includes a first microcontroller (U1), a MOSFET (M1), a power connection line (VCC), and a ground line. The drain (D) terminal of the MOSFET (M1) is connected to the ground line, the source (S) terminal is connected to GND, and the gate (G) terminal is connected to the first microcontroller (U1).

[0060] The water pump drive module includes a second microcontroller (U2), a voltage regulator (LDO), and drive and inverter circuits.

[0061] The power supply cable is connected to the voltage regulator, which outputs a stable DC voltage to supply the second microcontroller. The power supply cable also supplies power to the drive and inverter circuits. The second microcontroller is connected to the drive and inverter circuits, which in turn are connected to the water pump.

[0062] In this embodiment, only two power supply signals, the power connection line and the ground line, are needed to achieve the speed regulation function, making the circuit simpler.

[0063] The overall control steps of the flushing control method of the present invention are as follows: 1. Receive start command, program command, or receive start command, program command, and gear command: Program instructions may include one or more of the following: (1) Bottom flushing: The smart toilet enters the flushing mode.

[0064] (2) Washing water output: The smart toilet enters the washing mode.

[0065] (3) Integrated flushing: The smart toilet first enters the washing mode and then the drainage mode.

[0066] The program instructions correspond to different modes, and different modes correspond to different steering control signals.

[0067] Gear commands, such as first gear, second gear, third gear, etc., correspond to different speed signals.

[0068] In other embodiments, the gear position command may not be set separately, but rather combined with the program command to simplify the setup of the smart toilet. When the gear position command and program command are combined, the program command may include one or more of the following: (1) Low-speed flushing: The smart toilet enters the flushing mode (the motor rotates in the first direction) and the motor speed is 50%.

[0069] (2) High-speed flushing: The smart toilet enters the flushing mode (the motor rotates in the first direction) and the motor speed is 80%.

[0070] (3) Low speed of water flow during washing: The smart toilet enters the washing mode (the motor rotates in the second direction) and the motor speed is 50%.

[0071] (4) High-speed washing: The smart toilet enters the washing mode (the motor rotates in the second direction) and the motor speed is 80%.

[0072] (5) Combined flushing low speed: The smart toilet first enters the washing mode (first rotates in the second direction) and the motor speed is 50%, and then enters the draining mode (the motor rotates in the first direction) and the motor speed is 50%.

[0073] (6) Integrated high-speed flushing: The smart toilet first enters the washing mode (rotates along the second direction) and the motor speed is 80%, and then enters the draining mode (the motor rotates along the first direction) and the motor speed is 80%.

[0074] A pre-set mapping table is created for program commands, modes, steering control, and speed signals. The corresponding control is then performed by calling the mapping relationships in the table. See Table 1 below: Table 1. Flushing Control Mapping Table

[0075] The above is only a proposed mapping table. Depending on actual needs, more detailed mapping relationships can be set to better suit user requirements.

[0076] 2. The number of times the bus voltage drops is detected to calculate the number of pulse signals, so as to realize the transmission of steering control and speed signals.

[0077] The specific steps are as follows: S1. Pre-set different pulse signal cycle numbers to correspond to different motor directions and speeds, and store them in a mapping table, as shown in Table 2 below.

[0078] Table 2. Mapping Table of Pulse Signal and Steering Speed ​​Signal

[0079] The above is only a proposed mapping table. Depending on actual needs, more detailed mapping relationships can be set to better suit user requirements.

[0080] If the complete cycle time of a pulse is preset to T1, then the delay counting time is set to T2, and T2 > T1. As shown in Table 2, the pulse signal time of a complete cycle is T1, which is 0.4S, and the delay counting time T2 can be set to 0.6S.

[0081] S2. Detect the number of times the bus voltage drops. For each drop, increment the number of pulse signal cycles by 1 and calculate the total number of pulse signals. If no drop in bus voltage is detected within a set delay counting time, it is determined that the pulse signal reception has been completed.

[0082] If no low voltage signal of the bus voltage is detected within time T2, it is determined that the pulse signal has been received and the subsequent steps are continued.

[0083] S3. After the pulse signal is received, the corresponding motor direction and speed are obtained by looking up the corresponding relationship in the mapping table based on the calculated number of pulse signal cycles; and the steering control and speed signals are output.

[0084] 3. The water pump drive module receives steering control and speed signals to drive the water pump; otherwise, the water pump remains in standby mode. The water pump performs corresponding actions based on the steering control and speed signals.

[0085] For example: controlling the motor to rotate in the second direction puts the smart toilet into the washing mode; controlling the motor to rotate in the first direction puts the smart toilet into the draining mode. In the draining mode, the water pump drives water flow into the drain channel to flush the bottom of the toilet bowl. In the washing mode, the water pump drives water flow into the washing channel to flush the top of the toilet bowl. This completes the flushing control.

[0086] Example 3 like Figure 7-9 As shown in the figure, this embodiment discloses a smart toilet, including a toilet body 1, a water inlet valve 2, a water pump 3, a drain pipe 4, and a washing pipe 5.

[0087] The toilet body 1 includes a toilet seat 11 and a water storage container, which is either a water tank 12 or a sunken water chamber. Figure 7 The toilet is a water tank 12. The inlet valve 2 and water pump 3 are both located inside the water tank 12. A wash hole 14 is provided on the wall of the toilet chamber 11, and a drain outlet is provided at the bottom of the toilet chamber 11. A container inlet is provided on the water tank 12. The inlet valve 2 is located at the container inlet.

[0088] like Figure 13As shown, the water pump 3 includes a pump body, a motor and an impeller. The pump body is provided with a pump chamber, a drain outlet 31, a scrubbing outlet 32 ​​and at least one inlet 33. The inlet 33 is connected to the pump chamber. The impeller is built into the pump chamber and the motor drives the impeller to rotate.

[0089] One end of the drain pipe 4 is connected to the drain outlet 31, and the other end passes through the side wall or over the top of the water tank 12, connecting to the toilet drain outlet 15. For example... Figure 7 In the middle, the end of the drain pipe passes through the side wall of the water tank 12.

[0090] One end of the washing pipe 5 is connected to the washing outlet 32, and the other end is connected to the washing hole 14.

[0091] like Figure 14 As shown, the drain outlet 31 is oriented in the direction of water flow when the motor rotates in the first direction (clockwise, indicated by the solid arrow in the diagram). This means the drain outlet 31 is positioned along the tangent of the motor's rotation, making it easier for water to flow out of the drain outlet 31 when the motor rotates clockwise. Similarly, the wash outlet 32 ​​is oriented in the direction of water flow when the motor rotates in the second direction (counter-clockwise, indicated by the dashed arrow in the diagram). This means the wash outlet 32 ​​is positioned along the tangent of the motor's rotation, making it easier for water to flow out of the wash outlet 32 ​​when the motor rotates counter-clockwise.

[0092] Those skilled in the art can make the motor rotate in different directions according to the needs of different outlets by installing valves on the pipeline or at the outlet.

[0093] In both the drain pipe 4 and the washing channel 5, at least the drain pipe 4 is equipped with an anti-siphon port 6, which is connected to the water tank 12 and is set above the working water level of the water tank 12. When the washing port is higher than the working water level in the water tank, the washing pipe 5 does not need to be equipped with an anti-siphon port 6, that is, only the drain pipe needs to be equipped with an anti-siphon port 6; when the washing port is lower than the working water level in the water tank, both the washing pipe 5 and the drain pipe 4 need to be equipped with anti-siphon ports 6.

[0094] Combination Figure 10As shown, both the drainage pipe 4 and the washing pipe 5 include an inner pipe 81, a connecting fitting 83, and an outer pipe 82. The inner pipe 81 is placed inside the water tank 12, and the outer pipe 82 is placed outside the water tank 12. A mounting hole 121 penetrating the tank wall is provided on the water tank 12. The outer diameter of the connecting fitting 83 is matched with the diameter of the mounting hole 121, and the connecting fitting 83 is inserted into the mounting hole 121. Both the outer pipe 82 and the inner pipe 81 are inserted into the connecting fitting 83 (one end of the connecting fitting 83 is inserted into the cavity of the outer pipe 82, and the other end is inserted into the cavity of the inner pipe 81), thus enabling the inner pipe 81 to connect to the outer pipe 82 via the connecting fitting 83. At least above the connecting fitting 83 corresponding to the drain pipe 4, there is an "L"-shaped bend 84. One end of the bend 84 connects to the inner cavity of the connecting fitting 83, and the other end connects to the inner cavity of the water tank 12. The end of the bend 84 connecting to the inner cavity of the water tank 12 is an anti-siphon port 6, which is set higher than the working water level of the water tank 10. When the position of the flushing hole 14 on the toilet is higher than the working water level in the water tank 12, the anti-siphon port 6 does not need to be set on the flushing pipe 5. That is, only the bend 84 needs to be set on the drain pipe 4, and the bend 84 does not need to be set on the flushing pipe 5.

[0095] For the drainage pipe 4, the outer pipe 82, the bend 84, and the mounting hole 121 work together to limit the connecting fitting 83 to the wall of the water tank 12, ensuring the installation stability of the drainage pipe 4. For the washing pipe 5, if the washing pipe 5 has a bend 84, the connection structure is the same as that of the drainage pipe 4. If the washing pipe 5 does not have a bend 84, the outer pipe 82, the inner pipe 81, and the mounting hole 121 of the washing pipe 5 work together to limit the connecting fitting 83 to the wall of the water tank 12, ensuring the installation stability of the washing pipe 5.

[0096] In addition, an overflow port 122 can be provided on the water tank 12. The overflow port 122 is used to connect to the toilet chamber 11 of the toilet so that when the water level control of the water tank 10 is abnormal, the overflow water can enter the toilet chamber 11 and be discharged.

[0097] The flushing control method of this invention allows for the control of the flushing of the smart toilet, enabling various modes of time-based water dispensing simply by changing the forward and reverse rotation and speed of the motor. The control is convenient and simple, and compared to conventional water control components, this invention allows for a more compact toilet design.

[0098] Example 4 like Figure 11-12 As shown, this embodiment discloses a smart toilet, including a toilet body 1, a water inlet valve 2, and an integrated water fitting 7.

[0099] The toilet body 1 includes a toilet chamber 11 and a water storage container. The water storage container is a water tank or a sunken water chamber 13; in this embodiment, it is a sunken water chamber 13. A washing hole 14 is provided on the wall of the toilet chamber 11, and a drain outlet 15 is provided at the bottom of the toilet chamber 11.

[0100] The submerged water chamber 13 is provided with a container inlet and a container outlet. The inlet valve 2 is located at the container inlet.

[0101] The integrated water fitting 7 includes a housing 71, a drainage mechanism 72, a drainage base 73, and a water pump 3. The water pump and drainage mechanism are installed inside the housing, and the drainage base is installed below the housing at the container's drain outlet. The drainage mechanism is a readily available structure, such as a commercially available drain valve. The housing has water inlets and outlets for water supply.

[0102] Combination Figure 13 As shown, the water pump includes a pump body, a motor, and an impeller. The pump body has a pump chamber, at least one inlet 33, and at least two sets of outlets, both of which are connected to the pump chamber. The impeller is built into the pump chamber, and the motor drives the impeller to rotate in a first direction or a second direction.

[0103] The water outlets are a drainage outlet 31 and a washing outlet 32. The drainage outlet 31 is connected to the drainage mechanism, and the washing outlet 32 ​​is connected to the washing hole 14 through the washing pipe 5.

[0104] like Figure 14 As shown, the drain outlet 31 is oriented in the direction of water flow when the motor rotates in the first direction (clockwise, indicated by the solid arrow in the diagram). This means the drain outlet 31 is positioned along the tangent of the motor's rotation, making it easier for water to flow out of the drain outlet 31 when the motor rotates clockwise. Similarly, the wash outlet 32 ​​is oriented in the direction of water flow when the motor rotates in the second direction (counter-clockwise, indicated by the dashed arrow in the diagram). This means the wash outlet 32 ​​is positioned along the tangent of the motor's rotation, making it easier for water to flow out of the wash outlet 32 ​​when the motor rotates counter-clockwise.

[0105] The flushing control method of this invention allows for the control of the flushing of the smart toilet, enabling various modes of time-based water dispensing simply by changing the forward and reverse rotation and speed of the motor. The control is convenient and simple, and compared to conventional water control components, this invention allows for a more compact toilet design.

[0106] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A flushing control method for an intelligent toilet, characterized in that, The smart toilet is equipped with a water pump, a drainage channel, and a washing channel. The motor of the water pump can rotate in a first direction or a second direction. The flushing control method includes the following process: The motor is controlled to rotate in the second direction to put the smart toilet into the washing mode; the motor is controlled to rotate in the first direction to put the smart toilet into the draining mode; wherein, in the draining mode, the water pump drives water flow into the drain channel to flush the bottom of the toilet bowl; in the washing mode, the water pump drives water flow into the washing channel to flush the top of the toilet bowl; when the first direction is clockwise, the second direction is counterclockwise; when the first direction is counterclockwise, the second direction is clockwise.

2. The flushing control method for a smart toilet as described in claim 1, characterized in that: The motor of the water pump is connected to the flushing control circuit, which includes a power supply and signal control module and a water pump drive module. The power supply and signal control module is connected to the power supply and transmits the start signal, steering control and speed signal to the water pump drive module. The water pump drive module receives the control signal and drives the water pump to rotate in the first direction or the second direction at the corresponding speed.

3. The flushing control method for a smart toilet as described in claim 2, characterized in that: By changing the output PWM duty cycle of the power supply and signal control module, the set steering control and speed signals are realized, thereby controlling the direction and speed of the motor.

4. The flushing control method for a smart toilet as described in claim 3, characterized in that: The power supply and signal control module includes a first microcontroller, a first MOSFET, a second MOSFET, a power connection line, a ground line, and a signal input line; The drain (D) of the first MOSFET is connected to the ground line, the source (S) is connected to GND, and the gate (G) is connected to the first microcontroller. The drain of the second MOSFET is connected to the signal input line, the source is connected to GND, and the gate is connected to the first microcontroller. The first microcontroller inputs the PWM duty cycle signal to the second MOSFET. The water pump drive module includes a second microcontroller, a voltage regulator, a signal conversion module, and a drive and inverter circuit. The signal input line transmits the signal to the second microcontroller via the signal conversion module. The power connection line is connected to the voltage regulator, which outputs a stable DC voltage to supply the second microcontroller and the signal conversion module. The power connection line supplies power to the drive and inverter circuit. The second microcontroller is connected to the drive and inverter circuit, and the drive and inverter circuit is connected to the water pump.

5. The flushing control method for a smart toilet as described in claim 4, characterized in that: The signal conversion module includes a diode, a first resistor, a second resistor, and a third resistor. The signal input line is connected to the negative terminal of the diode. The positive terminal of the diode is connected to the first resistor to the I / O port of the second microcontroller. The negative terminal of the diode is connected to the second resistor to the power supply connection line. The positive terminal of the diode is connected to the third resistor to the voltage regulator.

6. The flushing control method for a smart toilet as described in claim 2, characterized in that: By setting up a software program to detect the number of times the bus voltage drops, the number of pulse signal occurrences is calculated to transmit steering control and speed signals, thereby controlling the motor's direction and speed.

7. The flushing control method for a smart toilet as described in claim 6, characterized in that: The power supply and signal control module includes a first microcontroller, a MOSFET, a power connection line, and a ground line. The drain (D) of the MOSFET is connected to the ground line, the source (S) is connected to GND, and the gate (G) is connected to the first microcontroller. The water pump drive module includes a second microcontroller, a voltage regulator, and a drive and inverter circuit. The power supply line is connected to a voltage regulator, which outputs a stable DC voltage to supply the second microcontroller. The power supply line also supplies power to the drive and inverter circuits. The second microcontroller is connected to the drive and inverter circuits, which in turn are connected to the water pump.

8. The flushing control method for a smart toilet as described in claim 6 or 7, characterized in that: The steps for transmitting steering control and speed signals by setting up software programs are as follows: S1. Pre-set different pulse signal cycle numbers to correspond to different motor directions and speeds, and store them in the mapping table accordingly; If the complete cycle time of a pulse is preset to T1, then the delay count time is set to T2, and T2 > T1; S2. Detect the number of times the bus voltage drops. For each drop, increment the number of pulse signal cycles by 1 and calculate the total number of pulse signals. If no drop in bus voltage is detected within a set delay counting time, it is determined that the pulse signal reception has been completed. S3. Based on the calculated number of pulse signal cycles, find the corresponding relationship in the mapping table to obtain the corresponding motor direction and speed; and output the steering control and speed signals. The water pump drive module receives steering control and speed signals to drive the water pump; otherwise, the water pump remains in standby mode.

9. The flushing control method for a smart toilet as described in claim 6, characterized in that: Input the start command and program command, and obtain the corresponding mode according to the program command. The program command includes one or more of the following: (1) Bottom flush: The toilet enters the flushing mode; (2) Washing water output: The toilet enters the washing mode; (3) Combined flushing: The toilet first enters the washing mode and then the draining mode; The different modes correspond to the steering control signals, which are stored in the mapping table.

10. The flushing control method for a smart toilet as described in claim 9, characterized in that: It also includes receiving gear commands, wherein different gear commands correspond to different speed signals and are stored in a mapping table; gear commands can be set separately or combined with program commands.

11. A smart toilet, characterized in that, The flushing control method according to any one of claims 1 to 10 is used to control the smart toilet, which includes a toilet body, an inlet valve, a water pump, a drain pipe, and a washing pipe. The toilet body includes a toilet chamber and a water storage container. The water storage container is a water tank or a sunken water chamber. The toilet chamber has a washing hole on its wall and a drain outlet at its bottom. The water storage container has a container inlet. The water inlet valve is located at the container inlet. The water pump is placed in a water storage container. The water pump includes a pump body, a motor and an impeller. The pump body is provided with a pump chamber, a drain outlet, a scrubbing outlet and at least one inlet. The inlet, drain outlet and scrubbing outlet are all connected to the pump chamber. The impeller is built into the pump chamber. The motor drives the impeller to rotate in a first direction or in a second direction. The drain outlet is connected to one end of the drain pipe, the wash outlet is connected to one end of the wash pipe, and the other end of the drain pipe passes through or over the side wall of the water storage container and connects to the drain outlet of the toilet; the other end of the wash pipe is connected to the wash hole.

12. The smart toilet as described in claim 11, characterized in that: In the drainage pipe and the washing pipe, at least the drainage pipe is provided with an anti-siphon port, and the anti-siphon port is connected to the water storage tank. The anti-siphon port is set higher than the working water level of the water storage tank. The direction of the drainage outlet is the direction of water flow when the motor rotates in the first direction, and the direction of the washing outlet is the direction of water flow when the motor rotates in the second direction.

13. The smart toilet as described in claim 11 or 12, characterized in that: Both the drainage pipe and the washing pipe include an inner pipe, a connecting fitting, and an outer pipe. The inner pipe is placed inside the water tank, and the outer pipe is placed outside the water tank. The inner pipe is connected to the outer pipe via the connecting fitting. The connecting fitting is integrally formed with the water tank, or the connecting fitting is detachably connected to the tank wall, or the connecting fitting is independent of the water tank. The anti-siphon port is provided on the connecting fitting. An "L"-shaped bend is provided above the connecting pipe fitting. One end of the bend is connected to the inner cavity of the connecting pipe fitting, and the other end of the bend is an anti-siphon port. The water tank has a through-hole in the tank wall. The outer diameter of the connecting pipe is matched with the diameter of the mounting hole, and the connecting pipe is inserted into the mounting hole. Both the outer pipe and the inner pipe are inserted into the connecting pipe, and the outer pipe, the bend, and the mounting hole cooperate to limit the connecting pipe to the tank wall of the water tank. Alternatively, the outer pipe, the inner pipe, and the mounting hole cooperate to limit the connecting pipe to the tank wall of the water tank. The water tank is also equipped with an overflow outlet.

14. A smart toilet, characterized in that, The flushing control method according to any one of claims 1 to 10 is used to control the smart toilet, which includes a toilet body, a water inlet valve, and integrated water fittings. The toilet body includes a toilet chamber and a water storage container. The water storage container is a water tank or a sunken water chamber. The toilet chamber has a washing hole on its wall and a drain outlet at its bottom. The water storage container has a container inlet and a container drain outlet. The water inlet valve is located at the container inlet. The integrated water fitting includes a housing, a drainage mechanism, a drainage base, and a water pump. The water pump and drainage mechanism are installed in the inner cavity of the housing. The drainage base is installed below the housing at the container's drain outlet. The housing has a water inlet / outlet hole for water supply. The water pump includes a pump body, a motor, and an impeller. The pump body has a pump chamber, at least one inlet, and at least two sets of outlets. Both the inlet and outlet are connected to the pump chamber. The impeller is built into the pump chamber. The motor drives the impeller to rotate in a first direction or a second direction. The at least two sets of outlets are a drainage outlet and a washing outlet, respectively. The drainage outlet is connected to the drainage mechanism, and the washing outlet is connected to the washing hole through a washing pipe.

15. The smart toilet as described in claim 14, characterized in that: The direction of the drain outlet is the direction of water flow when the motor rotates in the first direction, and the direction of the wash outlet is the direction of water flow when the motor rotates in the second direction.

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