CN111456174A - Intelligent toilet capable of outputting constant-flow cleaning water - Google Patents

Abstract

The invention provides an intelligent toilet capable of outputting constant flow cleaning water, which comprises: a water storage unit for obtaining tap water and storing the tap water as cleaning water; an instantaneous heater for heating the washing water; a booster pump for boosting the washing water and supplying the washing water to the washing function module; flow rate detection is carried out on the cleaning water output by the booster pump, and flow rate information is fed back to a flow rate sensor of the control unit; a control unit controlling a rotation speed of the booster pump to control a flow rate of the washing water supplied to the washing function assembly; and a cleaning function component which is provided with a spray rod and outputs cleaning water through the spray rod; the control unit obtains the rotating speed of the booster pump according to the corresponding relation between the rotating speed and the flow by measuring the flow data, and brings the flow feedback into the link of rotating speed closed-loop control, thereby maintaining the reliability of the product and reducing the cost.

Description

Intelligent toilet capable of outputting constant-flow cleaning water

Technical Field

The invention relates to an intelligent toilet bowl capable of outputting cleaning water at a constant flow, and belongs to the IPC classification E03D 3/12.

Background

The existing intelligent toilet is controlled by an electromechanical system or a program to complete the functions of hip cleaning, gynecological cleaning, water temperature regulation, spray rod self-cleaning and the like. Electromechanical system and toilet bowl inseparable use, formula intelligence toilet bowl as an organic whole for short. The electromechanical system and the pedestal pan are separated independently, and the cover part of the intelligent pedestal pan cover which can be used after combination is a split type intelligent pedestal pan, also called an electric pedestal pan seat, and is called an electric pedestal pan seat for short.

For an instant heating type all-in-one machine or an electric toilet seat, the instant heating type all-in-one machine or the electric toilet seat does not have a water storage tank, cleaning water is heated instantly only when the instant heating type all-in-one machine or the electric toilet seat is used, and the flow rate of the cleaning water is greatly influenced by the water pressure of. When a user uses the cleaning function, if other water consumption conditions occur in a family, the water pressure of tap water is reduced, and the flow of cleaning water is reduced accordingly. Although the integrated machine or the electric toilet seat has the function of adjusting the water pressure gear, the adjusting function cannot play a role because the water pressure fluctuation of a water source causes the abnormal water inlet pressure. Moreover, because the heating efficiency of the instant heater is fixed, the temperature of the cleaning water can be increased under the condition that the flow of the cleaning water is reduced, so that the scald to the human body is easily caused, and certain potential safety hazard is caused.

The terms and common general knowledge can be referred to national standard GB/T23131-2019 electric toilet seats for household and similar purposes and GB/T34549-2017 intelligent toilet seats for sanitary ware, and mechanical engineering handbooks and motor engineering manuals of 1983 or 1997 editions of mechanical industry publishers.

Disclosure of Invention

In order to solve the above problems, the present invention provides an intelligent toilet capable of outputting a constant flow rate of washing water, comprising:

A water storage unit for obtaining tap water and storing the tap water as cleaning water;

An instantaneous heater for heating the washing water; a booster pump for boosting the washing water and supplying the washing water to the washing function module;

Flow rate detection is carried out on the cleaning water output by the booster pump, and flow rate information is fed back to a flow rate sensor of the control unit;

A control unit controlling a rotation speed of the booster pump to control a flow rate of the washing water supplied to the washing function assembly; and

The washing device is provided with a spray rod and a washing functional component for outputting washing water through the spray rod;

The control unit includes a storage medium that executes computer instructions for:

Selecting a flow value as a given flow according to the corresponding relation between the given water pressure gear and the flow according to the water pressure gear information input by the user;

Acquiring actual flow detected by the flow sensor;

When the given flow rate is larger than the actual flow rate, increasing the terminal voltage of the booster pump to increase the rotating speed of the booster pump; when the given flow rate is smaller than the actual flow rate, reducing the terminal voltage of the booster pump to reduce the rotating speed of the booster pump;

The control unit controls the rotating speed of the booster pump according to the comparison between the given flow rate and the actual flow rate, so that the booster pump stably operates in a state that the actual flow rate of the output cleaning water and the given water pressure gear keep the corresponding relation.

For a way of connecting the water path,

Specifically, a water outlet of the water storage unit is communicated to a water inlet of the booster pump, a water outlet of the booster pump is communicated to a water inlet of the instant heating type heater, and a water outlet of the instant heating type heater is communicated to the spray rod.

Specifically, the flow sensor is arranged between a water outlet of the booster pump and a water inlet of the instant heating type heater.

Specifically, the intelligent toilet bowl further comprises a selection valve communicated with the instant heating type heater and the spray rod, wherein the selection valve comprises a water inlet communicated to a water outlet of the instant heating type heater and a plurality of water outlets respectively communicated to the spray rod.

For another way of connecting the water circuit,

Specifically, a water outlet of the water storage unit is communicated to a water inlet of the instant heating type heater, a water outlet of the instant heating type heater is communicated to a water inlet of the booster pump, and a water outlet of the booster pump is communicated to the spray rod.

Specifically, the flow sensor is arranged at a water outlet of the booster pump.

Specifically, the intelligent toilet bowl further comprises a selection valve communicated with the booster pump and the spray rod, wherein the selection valve comprises a water inlet communicated to a water outlet of the booster pump and a plurality of water outlets respectively communicated to the spray rod.

For the above two water path connection modes,

Specifically, the spray rod comprises a plurality of independent flow channels and spray holes corresponding to the flow channels, and water outlets of the selector valves are respectively communicated with the flow channels correspondingly.

Preferably, the water storage unit is a pressure-bearing water tank.

Specifically, the control unit includes:

A data storage part for storing the corresponding relation between the water pressure gear and the flow in advance;

A PWM control part for obtaining and comparing the given flow and the actual flow and calculating the rotation speed control parameter according to the comparison result;

A PWM generating part for obtaining and adjusting the duty ratio of the output PWM signal according to the rotating speed control parameter;

A power-on control part for controlling the power supply of the booster pump to be switched on and off according to the PWM signal;

When the given flow rate is larger than the actual flow rate, the duty ratio of the PWM signal is increased, the electrifying time of the booster pump in a given period is increased, the effective voltage value acting on the booster pump is increased, and the terminal voltage of the booster pump is increased; when the given flow rate is smaller than the actual flow rate, the duty ratio of the PWM signal is reduced, the electrifying time of the booster pump in a given period is reduced, the effective voltage value acting on the booster pump is reduced, and the terminal voltage of the booster pump is reduced.

The technical means adopted by the invention and the beneficial effects thereof are as follows:

1. The water storage tank is arranged, so that the problem that the temperature of cleaning water changes due to the fluctuation of the water pressure of tap water is solved, and the safety performance of a product is improved.

2. The rotating speed of the booster pump is obtained through detecting the flow rate of cleaning water output by the booster pump according to the corresponding relation of the rotating speed and the flow rate, the traditional methods for detecting the rotating speed of the booster pump, such as FOC non-inductive detection, Hall element speed measurement and the like, are replaced, the reliability of a speed measurement result is kept, meanwhile, a circuit and an algorithm are simpler, and the product cost is greatly reduced.

Drawings

FIG. 1 is a schematic view showing the connection relationship of components of the first embodiment;

FIG. 2 is a schematic diagram of the relationship of the waterway structure of the first embodiment;

FIG. 3 is a schematic view showing the connection relationship of the components of the second embodiment;

FIG. 4 is a schematic diagram of the relationship of the waterway structure of the second embodiment;

FIG. 5 is a schematic diagram of the hardware circuit of the control unit;

FIG. 6 is a port schematic of a motor driver chip;

FIG. 7 is a schematic circuit diagram of a gate driver circuit;

Fig. 8 is a schematic circuit diagram of a full bridge driving circuit.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments.

Referring to fig. 1 and 2, in a first embodiment of the intelligent toilet, an intelligent toilet capable of outputting a constant flow of washing water is provided, which includes a water inlet valve 10, a water storage unit, a booster pump 30, a flow sensor 40, an instantaneous heater 50, a selector valve 61, and a spray bar 62, which are sequentially connected through a water path, and a control unit electrically connected to the water inlet valve 10, the booster pump 30, the flow sensor 40, the instantaneous heater 50, the selector valve 61, and the spray bar 62.

And the water inlet valve 10 is arranged on a tap water supply pipe and used for switching on and off water supply. The inlet valve 10 comprises a valve body provided with a water inlet and a water outlet, an opening and closing member for opening and closing a flow passage between the water inlet and the water outlet, and an electromagnetic assembly for driving the opening and closing member to move. Wherein, the water inlet of the water inlet valve 10 is externally connected with a tap water supply pipe, and the water outlet of the water inlet valve 10 is connected with the water inlet of the water storage unit; the electromagnetic assembly is electrically connected with the control unit and drives the opening and closing member to open a flow passage between the water inlet and the water outlet of the water inlet valve 10 in a power-on state.

The water storage unit is specifically a water storage tank 20, and the water storage tank 20 is provided with a water inlet and a water outlet. Wherein, the water inlet of the water storage tank 20 is connected with the water outlet of the water inlet valve 10, and the water outlet of the water storage tank 20 is connected with the water inlet of the booster pump 30. Preferably, the storage tank 20 may be selected as a pressure-bearing tank having the same water pressure as that of a normal tap water supply pipe, and can continuously supply the washing water at a stable water pressure even in the case that the water pressure of the tap water is abnormal.

The booster pump 30 applies work to the washing water by rotation of the impeller, and changes the water pressure and flow rate of the washing water. The booster pump 30 includes a pump cover provided with a water inlet and a water outlet, an impeller, a rotor coaxially rotating with the impeller, and a stator driving the rotor to rotate. Wherein, the water inlet of the booster pump 30 is connected with the water outlet of the water storage tank 20, and the water outlet of the booster pump 30 is connected with the water inlet of the instant heating type heater 50; the stator is electrically connected with the control unit and drives the rotor to rotate in an electrified state. Specifically, the booster pump 30 is driven by a brushless DC motor with a rated voltage DC310V and a rated power of 100W.

And a flow sensor 40 for detecting a flow rate of the washing water output from the booster pump 30, electrically connected to the control unit, and transmitting detected flow rate information to the control unit. The flow sensor 40 may be installed at the water outlet of the booster pump 30, or at the water inlet of the instantaneous heater 50, or in the water path pipe between the water outlet of the booster pump 30 and the water inlet of the instantaneous heater 50. Specifically, the flow sensor 40 may be selected from the model D6F-PH flow sensor available from Ohlong.

The instantaneous heater 50 includes a heating pipe having a water inlet and a water outlet and an electric heating wire outside the heating pipe, and instantaneously heats washing water flowing therethrough. Wherein, the water inlet of the instant heating type heater 50 is connected with the water outlet of the booster pump 30, and the water outlet of the instant heating type heater 50 is connected with the water inlet of the selector valve 61; the heating wire is electrically connected with the control unit, generates heat in a power-on state and transfers heat to the heating pipe. Specifically, the instantaneous heater 50 can select a ceramic heating tube with a rated voltage of 220V and a rated power of 1600W; alternatively, an instant heating module incorporating the flow sensor 40 may be used, such as the TYREK corporation double-ended instant heating module.

The wash function module is used to output wash water and includes a selector valve 61 and a spray bar 62.

The selection valve 61 comprises a stepping motor electrically connected with the control unit, a valve core driven by the stepping motor to rotate, and a valve body provided with a water inlet and a plurality of water outlets. Wherein, the water inlet of the selector valve 61 is connected with the water outlet of the instant heating type heater 50, and the water outlet of the selector valve 61 is connected with the spray rod 62; the control unit controls the rotating stroke of the valve core through the stepping motor, and only leads the water outlet of one selector valve 61 to be conducted at the same time, thereby changing the flow direction of the cleaning water.

The spray rod 62 comprises a plurality of independent flow channels, spray holes corresponding to the flow channels, and a stepping motor for driving the spray rod 62 to stretch. The water outlets of the selector valves 61 are respectively and correspondingly communicated with the flow channels, and the cleaning water is sprayed to the human body part through the flow channels and the spray holes; the stepping motor is electrically connected with the control unit and drives the spray rod 62 to extend out to enable the spray holes to be aligned with human body parts when the intelligent toilet runs a cleaning function.

Generally, the intelligent toilet bowl has a plurality of washing modes, such as hip washing, bidet washing, etc., and the washing function module presets a specific selection valve 61 water outlet, flow passage and spray hole for each washing mode. When a user selects a certain cleaning mode, the corresponding flow channel and the spray hole are connected to the water channel through the water outlet of the selector valve 61, so that the cleaning water is sprayed out from different spray holes.

Referring to fig. 3 and 4, the second embodiment of the intelligent toilet is an alternative design scheme for exchanging the connection relationship between the booster pump 30 and the instant heating type heater 50 in the water path on the basis of the first embodiment. In the second embodiment, the water outlet of the water storage tank 20 is connected to the water inlet of the instantaneous heater 50, the water outlet of the instantaneous heater 50 is connected to the water inlet of the booster pump 30, and the water outlet of the booster pump 30 is connected to the water inlet of the selector valve 61. In addition, the flow sensor 40 can be installed only at the outlet of the booster pump 30, and an instant heating module integrated with the flow sensor 40 cannot be used.

Each washing mode has a preset initial water pressure gear, namely, the water pressure gear is automatically given after a user selects a certain washing mode. Of course, the user can also adjust the water pressure gear by himself. The water pressure gear which is automatically given or manually given by the user is received by the control unit as the water pressure gear information input by the user.

And the control unit is specifically a main control circuit board and a motor driving circuit board which are connected through UART communication.

For the two embodiments of the intelligent toilet, the control unit has the following implementation modes. Referring to fig. 5, the control unit includes: the PWM generator is integrated with the data storage part and the PWM generating part of the main control circuit board, and the power-on control part is integrated with the motor driving circuit board. The MCU of the main control circuit board adopts a single chip ATSAMC20N18A-N of Atmel company.

The data storage part is a memory of the MCU, and stores the corresponding relation between the water pressure gear and the flow in a data structure mode. The correspondence is as follows:

Hydraulic gear	1	2	3	4	5
						flow (m L/min)	600	700	1000	1200	1500

The MCU receives water pressure gear information input by a user, converts the water pressure gear information into flow information according to the corresponding relation in the table, and sends the flow information to the PWM generating part as given flow information. In addition, the MCU is in communication with the flow sensor 40/instant heating module through the UART interface, receives actual flow information, and transmits the actual flow information to the PWM control unit. And the PWM control part is specifically a comparator of the MCU, receives the information of the given flow and the actual flow, compares the information of the given flow and the actual flow, and outputs PWM signal control parameters. The PWM signal control parameter is the duty ratio of a PWM signal, and when the given flow is larger than the actual flow, information for increasing the duty ratio of the PWM signal is output; and when the given flow rate is smaller than the actual flow rate, outputting information for reducing the duty ratio of the PWM signal.

the PWM generating part outputs a PWM signal according to the PWM signal control parameter, in particular to a motor driving chip, the motor driving chip is in communication connection with the MCU through a UART interface and receives the PWM signal control parameter, and specifically, referring to fig. 6, the motor driving chip adopts a single chip microcomputer SC32F5632 LL of the Milland microelectronics corporation.

the power-on control part controls the power on-off of the booster pump 30 according to the PWM signal and comprises a gate drive circuit and a full-bridge drive circuit, the gate drive circuit is a circuit built around the gate drive chip, the gate drive chip adopts a gate drive chip SDH2106SA of the Milland microelectronics corporation, for example, a U phase, see fig. 7, a VCC port of the gate drive circuit is connected with a 15V direct-current power supply, the 15V direct-current power supply is grounded through a capacitor C0, a HIN port and an L IN port are respectively connected with two U-phase PWM ports UH and U L of the motor drive chip, a COM port is grounded, a VB port is connected with the 15V direct-current power supply through a diode Dbs and a resistor R7, a VS port is connected with a VB port through a capacitor Cbs, HO and L0O ports are respectively connected with a U-phase high-side MOS tube gate UHO and a low-side MOS tube gate UHO and U L O of the full-bridge drive circuit, and so on, a HIN port of another gate drive chip 2106 and L SA are respectively connected with two U-phase gate electrodes HO and VHL-side MOS tube gate electrodes HO and a full-side gate drive circuit VHO ports, VHW ports, a full-bridge drive circuit, a VHW drive circuit.

The resistor R0 may be selected to be 15 omega. The capacitor C0 is a power filter capacitor, and can be selected from 0.1 μ F to 1 μ F. The diode Dbs is a bootstrap diode and should be selected to have a high reverse breakdown voltage (greater than 600V) and a recovery time as short as possible. The capacitor Cbs is a bootstrap capacitor, a ceramic capacitor or a tantalum capacitor should be selected, the minimum capacitance value can be calculated according to the following formula, and the capacitor Cbs is 2.2 μ F in this embodiment.

Qg is the grid charge of the high-side MOS tube; qperiod is the charge requirement of the level shift circuit in each period, and is about 5 nC; ibs (static) is the quiescent current of the high-side full-bridge drive circuit; ibs (leak) is the leakage current of bootstrap capacitor Cbs; f is the circuit working frequency; vcc is the charging voltage of bootstrap diode Dbs; v _Fthe voltage drop is the forward conduction voltage drop of the bootstrap diode Dbs, Vds (L) is the conduction voltage drop of the low-side MOS tube, the 15V direct-current power supply is obtained by a 320V direct-current power supply through a switching power supply circuit, and the switching power supply circuit belongs to the prior art and is not described in detail.

A full-bridge driving circuit is shown in FIG. 8 and comprises 6 PMOS transistors Q1, Q2, Q3, Q4, Q5 and Q6, the drains of Q1, Q2 and Q3 are connected with a 320V direct current power supply, the gates of Q1, Q2 and Q3 are respectively connected with the HO port of a gate protection chip through gate protection resistors R1, R2 and R3, the sources of Q1, Q2 and Q3 are respectively connected with the drains of Q4, Q5 and Q6, the gates of Q4, Q5 and Q6 are respectively connected with the 5 port of the gate protection chip through gate protection resistors R4, R5 and R5, the sources of Q5, Q5 and Q5 are grounded, the midpoints Uout, Vout and Wout of the full-bridge driving circuit are respectively connected with phase lines of a brushless DC motor M driving a booster pump 30, and the gate protection resistors R5, Q3675 and Q3675 can be selected.

When the opening sequence of the PMOS tubes is Q1Q5, Q1Q6, Q2Q6, Q2Q4, Q3Q4 and Q3Q5, accurate commutation is carried out at proper time, and continuous operation of the direct-current brushless motor can be realized. When the energization control portion receives the PWM signal whose duty ratio is increased, the energization time of the booster pump 30 in a given period is increased, so that the effective value of the voltage acting on the booster pump 30 is increased, and the rotation speed of the booster pump 30 is increased. When the energization control portion receives the PWM signal whose duty ratio is decreased, the energization time of the booster pump 30 in a given period is decreased, so that the effective value of the voltage acting on the booster pump 30 is decreased, and the rotation speed of the booster pump 30 is thereby decreased.

The rotation speed of the booster pump 30 is regulated in 5 stages according to a preset water pressure gear, and is in a linear relationship with the flow rate of the cleaning water output by the booster pump 30, and the specific corresponding relationship refers to the following table.

Hydraulic gear	1	2	3	4	5
						Rotational speed (rpm)	6000	7000	8000	10000	12000
flow (m L/min)	600	700	1000	1200	1500

And the computer instruction executed by the control unit is stored in a memory of the MCU. The computer instruction also discloses a working method of the intelligent toilet capable of outputting the constant flow cleaning water, which comprises the following steps:

Obtaining given flow according to a water pressure gear selected by a user and a preset corresponding relation between the water pressure gear and the flow;

Acquiring the actual flow rate of the cleaning water output by the booster pump 30;

Increasing the terminal voltage of the booster pump 30 to increase the rotation speed of the booster pump 30 when the given flow rate is larger than the actual flow rate; when the given flow rate is smaller than the actual flow rate, reducing the terminal voltage of the booster pump 30 to lower the rotation speed of the booster pump 30; the booster pump 30 is stably operated in a state where the actual flow rate of the outputted wash water and the given water pressure step are maintained in the corresponding relationship.

When the intelligent toilet bowl works, the water inlet valve 10 is kept open, so that tap water is normally supplied to the water storage tank 20. When the intelligent toilet bowl enters a cleaning mode, the spray rod 62 extends out, the selection valve 61 is communicated with a flow channel and a spray hole corresponding to the cleaning mode, and cleaning water in the water storage tank 20 is sprayed to a human body part through the corresponding flow channel and the spray hole after being subjected to pressurization treatment by the booster pump 30 and heating treatment by the instant heating type heater 50. Meanwhile, the water pressure gear is determined through presetting or user modification, the booster pump 30 operates at a rotation speed matched with the water pressure gear, and the control unit adjusts the rotation speed of the booster pump 30 through flow feedback to ensure the stable rotation speed of the booster pump 30.

When the given flow rate is larger than the actual flow rate, the duty ratio of the PWM signal is increased, the energization time of the booster pump 30 in a given period is increased, the effective value of the voltage acting on the booster pump 30 is increased, the terminal voltage of the booster pump 30 is increased, and the rotation speed of the booster pump 30 is increased; when the given flow rate is smaller than the actual flow rate, the duty ratio of the PWM signal is decreased, the energization time of the booster pump 30 in a given period is decreased, the effective value of the voltage acting on the booster pump 30 is decreased, the terminal voltage of the booster pump 30 is decreased, and the rotation speed of the booster pump 30 is thereby decreased.

As a buffer means between water supply and water use, the water storage tank 20 solves the problem that the temperature of cleaning water is changed due to the fluctuation of the water pressure of tap water, and improves the safety performance of products.

Moreover, the rotating speed of the booster pump 30 is obtained according to the corresponding relation of the rotating speed and the flow by detecting the flow of the cleaning water output by the booster pump 30, the traditional methods for detecting the rotating speed of the booster pump 30, such as FOC non-inductive detection, Hall element speed measurement and the like, are replaced, the reliability of the speed measurement result is kept, meanwhile, the circuit and the algorithm are simpler, and the product cost is greatly reduced.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "driven," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; the two components can be directly connected or indirectly connected through an intermediate medium, and can be communicated with each other inside the two components or in an interaction relationship of the two components; it can be driven directly or indirectly through an intermediate.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and the present invention shall fall within the protection scope of the present invention as long as the technical effects of the present invention are achieved by the same means.

Claims (10)

1. An intelligent toilet capable of outputting a constant flow of washing water, comprising:

-a water storage unit to take tap water and store it as wash water;

-an instantaneous heater for heating the washing water;

-a booster pump for boosting the washing water and supplying the washing water to the washing function unit;

-flow rate detection of the washing water output by the booster pump and feedback of flow rate information to the flow rate sensor of the control unit;

-a control unit controlling a rotational speed of the booster pump to control a flow rate of the washing water supplied to the washing function assembly; and

The cleaning function component is provided with a spray rod and outputs cleaning water through the spray rod;

The control unit includes a storage medium that executes computer instructions for:

According to the water pressure gear information input by the user, selecting a flow value as a given flow according to the corresponding relation between the given water pressure gear and the flow;

-obtaining an actual flow detected by the flow sensor;

-increasing the terminal voltage of the booster pump to increase the rotational speed of the booster pump when the given flow rate is greater than the actual flow rate; when the given flow rate is smaller than the actual flow rate, reducing the terminal voltage of the booster pump to reduce the rotating speed of the booster pump;

The control unit controls the rotating speed of the booster pump according to the comparison between the given flow rate and the actual flow rate, so that the booster pump stably operates in a state that the actual flow rate of the output cleaning water and the given water pressure gear keep the corresponding relation.

2. The intelligent toilet bowl according to claim 1, wherein a water outlet of the water storage unit is communicated to a water inlet of the booster pump, a water outlet of the booster pump is communicated to a water inlet of the instantaneous heater, and a water outlet of the instantaneous heater is communicated to the spray bar.

3. The intelligent toilet according to claim 2, wherein the flow sensor 40 is located between the water outlet of the booster pump 30 and the water inlet of the tankless heater 50.

4. The intelligent pedestal pan according to claim 1, wherein a water outlet of the water storage unit is communicated to a water inlet of the instantaneous heater, a water outlet of the instantaneous heater is communicated to a water inlet of the booster pump, and a water outlet of the booster pump is communicated to the spray bar.

5. The intelligent toilet bowl according to claim 4, wherein the flow sensor is provided at a water outlet of the booster pump.

6. The intelligent toilet bowl according to claim 2, further comprising a selector valve communicating the tankless heater and the spray bar, the selector valve including a water inlet communicating to a water outlet of the tankless heater and a plurality of water outlets each communicating to the spray bar.

7. The intelligent toilet bowl according to claim 4, further comprising a selector valve communicating the booster pump and the spray bar, wherein the selector valve comprises a water inlet communicated to a water outlet of the booster pump and a plurality of water outlets respectively communicated to the spray bar.

8. The intelligent toilet bowl according to claim 6 or 7, characterized in that the spray bar comprises a plurality of independent flow passages and spray holes corresponding to the flow passages, and the water outlets of the selector valves are respectively communicated with the flow passages correspondingly.

9. The intelligent toilet according to any one of claims 1 to 8, wherein the water storage unit is a pressurized water tank.

10. The intelligent toilet according to any one of claims 1 to 8, wherein the control unit comprises:

A data storage unit for storing in advance a correspondence between the water pressure level and the flow rate;

A PWM control part for obtaining and comparing the given flow and the actual flow and calculating the rotation speed control parameter according to the comparison result;

A PWM generating section for acquiring and adjusting a duty ratio of the output PWM signal according to the rotational speed control parameter;

The power-on control part controls the power on-off of the booster pump according to the PWM signal;

When the given flow rate is larger than the actual flow rate, the duty ratio of the PWM signal is increased, the electrifying time of the booster pump in a given period is increased, the effective voltage value acting on the booster pump is increased, and the terminal voltage of the booster pump is increased; when the given flow rate is smaller than the actual flow rate, the duty ratio of the PWM signal is reduced, the electrifying time of the booster pump in a given period is reduced, the effective voltage value acting on the booster pump is reduced, and the terminal voltage of the booster pump is reduced.

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