Intelligent toilet water temperature heating device and method

Abstract

The present invention discloses an intelligent toilet water temperature heating device, including a water inlet mechanism, an instant heating mechanism, a water outlet mechanism, a control mechanism and a power supply mechanism; the water outlet mechanism includes a first connecting pipe, a temperature sensor, a water circuit switching component, a first water outlet component and a second water outlet component, the water inlet end of the first connecting pipe is connected to the instant heating mechanism, the water outlet end of the first connecting pipe is connected to the water inlet end of the water circuit switching component, the temperature sensor is arranged at the water outlet end of the first connecting pipe and is used to detect the water temperature, and the water outlet end of the water circuit switching component is respectively connected to the first water outlet component and the second water outlet component. The present invention can solve the problem that the water temperature far exceeds the set value caused by water blockage and residual heat of the heater when switching the water circuit, thereby ensuring that the water temperature is always within a safe range.

Description

Technical Field

[0001] The present invention relates to the field of intelligent toilets, and in particular to an intelligent toilet water heating device and method. Background Art

[0002] With the improvement of living standards, the popularity of smart toilets is getting higher and higher. Most smart toilets on the market are equipped with cleaning functions and water heating functions. Since the water will directly contact the user during the cleaning process, the water temperature must be stable and the temperature must always be within a safe range. In the traditional temperature control method, the water temperature setting values ​​of different working processes of the smart toilet are set to the same value, and then the water temperature is controlled through integral closed-loop control. However, due to the influence of water blockage and residual heat of the heater when switching the water circuit, the water temperature will far exceed the set value when entering the next working process, which will affect the user experience and even cause safety hazards. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a smart toilet water temperature heating device and method, which can solve the problem that the water temperature far exceeds the set value caused by water blockage and residual heat of the heater when switching the water path.

[0004] In order to solve the above technical problems, the present invention provides an intelligent toilet water temperature heating device, including a water inlet mechanism, an instant heating mechanism, a water outlet mechanism, a control mechanism and a power supply mechanism; the water outlet mechanism includes a first connecting pipe, a temperature sensor, a water circuit switching assembly, a first water outlet assembly and a second water outlet assembly, the water inlet end of the first connecting pipe is connected to the instant heating mechanism, the water outlet end of the first connecting pipe is connected to the water inlet end of the water circuit switching assembly, the temperature sensor is arranged at the water outlet end of the first connecting pipe and is used to detect the water temperature, the water outlet end of the water circuit switching assembly is respectively connected to the first water outlet assembly and the second water outlet assembly; the control mechanism includes an MCU and a PID controller, the water inlet mechanism, the instant heating mechanism, the power supply mechanism, the water circuit switching assembly, the PID controller and the temperature sensor are all connected to the MCU, the temperature sensor is also connected to the PID controller, and the PID controller is used to control the water temperature.

[0005] Preferably, the water inlet mechanism includes a first solenoid valve, a second connecting pipe and a germicidal lamp, the water inlet end of the first solenoid valve is connected to the tap water port, and the water outlet end of the first solenoid valve is connected to the water inlet end of the instant heating mechanism through the second connecting pipe; the germicidal lamp is arranged in the second connecting pipe; the first solenoid valve and the germicidal lamp are both connected to the MCU.

[0006] Preferably, the water circuit switching assembly includes a second solenoid valve, which is connected to the MCU; the second solenoid valve includes a water inlet end and at least two water outlet ends, the water inlet end of the second solenoid valve is connected to the water outlet end of the instant heating mechanism through the first connecting pipe, and the water outlet end of the second solenoid valve is respectively connected to the first water outlet assembly and the second water outlet assembly.

[0007] Preferably, the second water outlet component includes a water inlet part, a frequency conversion component and a water outlet part, the water inlet part is used to connect the water outlet end of the second solenoid valve and the frequency conversion component, and the frequency conversion component is used to connect the water inlet part and the water outlet part; the frequency conversion component includes a frequency conversion pipe, a first sealing part and an electromagnetic coil, the first sealing part is arranged around the outer surface of the frequency conversion pipe and fixed on the frequency conversion pipe, and the electromagnetic coil is arranged around the outer surface of the first sealing part and fixed on the first sealing part; the first sealing part is provided with a first elastic part, a second elastic part and a first magnetic part arranged between the first elastic part and the second elastic part, the first elastic part and the second elastic part are both arranged around the outer surface of the frequency conversion pipe and fixed on the frequency conversion pipe, the first magnetic part is provided with a one-way valve fixed to the first magnetic part, the one-way valve is communicated with the frequency conversion pipe, the first magnetic part is arranged around the outer surface of the frequency conversion pipe and is movably connected to the frequency conversion pipe; the electromagnetic coil is connected to the MCU.

[0008] Preferably, the water inlet part includes a water inlet pipe and a second sealing part, a first cavity is provided in the second sealing part, an elastic membrane is provided in the first cavity, and the elastic membrane divides the first cavity into a sealed cavity and a through cavity; one end of the water inlet pipe is connected to the water outlet end of the second solenoid valve, and the other end is respectively connected to the through cavity and the frequency conversion pipeline.

[0009] Preferably, the water outlet component includes a third connecting pipe and a first nozzle, and the first nozzle is connected to the frequency conversion pipeline through the third connecting pipe.

[0010] Preferably, the first water outlet assembly includes a fourth connecting pipe and a second nozzle, and the second nozzle is connected to the water outlet end of the second solenoid valve through the fourth connecting pipe.

[0011] Preferably, the power supply mechanism includes a first power supply component, a rechargeable power supply and a second power supply component, the first power supply component includes a switching power supply, a voltage conversion circuit and a first switching circuit, and the mains power supplies power to the MCU through the switching power supply and the voltage conversion circuit in sequence; the second power supply component includes a wake-up circuit, a second switching circuit, a third switching circuit and a fourth switching circuit, the rechargeable power supply supplies power to the MCU through the second switching circuit, one end of the wake-up circuit is grounded, and the other end of the wake-up circuit is connected to the second switching circuit through the third switching circuit, one end of the fourth switching circuit is grounded, and the other end of the fourth switching circuit is connected to the second switching circuit; the switching power supply is used to control the on and off of the first switching circuit, the rechargeable power supply and the first switching circuit are both used to control the on and off of the third switching circuit, the fourth switching circuit and the third switching circuit are used to control the on and off of the second switching circuit, and the MCU is used to control the on and off of the fourth switching circuit.

[0012] The present invention also provides a method for heating water temperature of an intelligent toilet, comprising: driving the instant heating mechanism to operate in a circulation mode, the circulation mode comprising a pre-cleaning self-cleaning mode, a cleaning mode and a post-cleaning self-cleaning mode which are operated in sequence, wherein the heating temperature set by the instant heating mechanism in the pre-cleaning self-cleaning mode is T1, the heating temperature set in the cleaning mode is T2, and the heating temperature set in the post-cleaning self-cleaning mode is T3, T2>T1>T3; acquiring the water temperature at the water outlet end of the first connecting pipe in real time through the temperature sensor; and determining the temperature of the instant heating mechanism according to the real-time acquired water temperature and the instant heating mechanism. The heating temperature set by the thermal heating mechanism performs PID regulation on the heating power of the instant heating mechanism; in the self-cleaning mode before cleaning, the water circuit switching component is driven to connect the first connecting pipe and the first water outlet component, and the second water outlet component is cleaned by the first water outlet component; in the cleaning mode, the water circuit switching component is driven to connect the first connecting pipe and the second water outlet component, and the user is cleaned by the second water outlet component; in the self-cleaning mode after cleaning, the water circuit switching component is driven to connect the first connecting pipe and the first water outlet component, and the second water outlet component is cleaned by the first water outlet component.

[0013] Preferably, T2=T1+Q / (C*m), T1=T3+Q / (C*m), wherein T1 is the heating temperature set for the instant heating mechanism in the self-cleaning mode before cleaning, T2 is the heating temperature set for the instant heating mechanism in the cleaning mode, T3 is the heating temperature set for the instant heating mechanism in the self-cleaning mode after cleaning, Q is the additional heat absorbed by the water in the instant heating mechanism when the water circuit switching component is temporarily blocked during the switching process, C is the specific heat capacity of water, and m is the mass of water in the instant heating mechanism.

[0014] The beneficial effects of implementing the present invention are:

[0015] By adopting the present invention, by making the smart toilet water temperature heating device operate in the circulation mode, it is possible to predict the heat accumulated in the water path switching process so that when entering the user's cleaning stage, the water temperature just meets the set water temperature, thereby ensuring that the water temperature is always within a safe range; at the same time, in each mode, the water temperature is PID closed-loop controlled separately, further preventing temperature overshoot. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the intelligent toilet water temperature heating device provided by the present invention;

[0017] Figure 2 This is an electrical connection block diagram of the intelligent toilet water temperature heating device provided by the present invention;

[0018] Figure 3 is a structural schematic diagram of the second water outlet assembly provided by the present invention;

[0019] Figure 4 It is a principle block diagram of the power supply mechanism provided by the present invention;

[0020] Figure 5 The present invention is a flow chart of the intelligent toilet water heating method. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0022] like Figures 1-2As shown, the present invention provides an intelligent toilet water temperature heating device, including a water inlet mechanism 1, an instant heating mechanism 2, a water outlet mechanism 3, a control mechanism 4 and a power supply mechanism 5; the water outlet mechanism 3 includes a first connecting pipe 9, a temperature sensor 10, a water circuit switching component 6, a first water outlet component 7 and a second water outlet component 8, the water inlet end of the first connecting pipe 9 is connected to the instant heating mechanism 2, the water outlet end of the first connecting pipe 9 is connected to the water inlet end of the water circuit switching component 6, the temperature sensor 10 is arranged at the water outlet end of the first connecting pipe 9 and is used to detect the water temperature, the water outlet end of the water circuit switching component 6 is respectively connected to the first water outlet component 7 and the second water outlet component 8; the control mechanism 4 includes an MCU 41 and a PID controller 42, the water inlet mechanism 1, the instant heating mechanism 2, the power supply mechanism 5, the water circuit switching component 6, the PID controller 42 and the temperature sensor 10 are all connected MCU41 is connected, the temperature sensor 10 is also connected to the PID controller 42, and the PID controller 42 is used to control the water temperature; the intelligent toilet water temperature heating device operates in a circulation mode, and the circulation mode includes a self-cleaning mode before cleaning, a cleaning mode and a self-cleaning mode after cleaning, which are operated in sequence, wherein in the self-cleaning mode before cleaning and the self-cleaning mode after cleaning, the water circuit switching component 6 connects the first connecting pipe 9 and the first water outlet component 7, and the first water outlet component 7 is used to clean the second water outlet component 8, and in the cleaning mode, the water circuit switching component 6 connects the first connecting pipe 9 and the second water outlet component 8, and the second water outlet component 8 is used to clean the user, and the heating temperatures set by the instant heating mechanism 2 in the self-cleaning mode before cleaning, the cleaning mode and the self-cleaning mode after cleaning are T1, T2 and T3 respectively, T2 is the water temperature set by the user, and T2>T1>T3.

[0023] The present invention, by operating the smart toilet water temperature heating device in a circulation mode, can predict the heat accumulated during the water path switching process so that when the user enters the cleaning stage, the water temperature just meets the set water temperature, thereby ensuring that the water temperature is always within a safe range; at the same time, in each mode, the water temperature is PID closed-loop controlled separately, further preventing temperature overshoot.

[0024] Preferably, T2=T1+Q / (C*m), T1=T3+Q / (C*m), wherein T1 is the heating temperature set in the self-cleaning mode before cleaning of the instant heating mechanism 2, T2 is the heating temperature set in the cleaning mode of the instant heating mechanism 2, T3 is the heating temperature set in the self-cleaning mode after cleaning of the instant heating mechanism 2, Q is the additional heat absorbed by the water in the instant heating mechanism 2 when the water circuit switching component 6 is temporarily blocked during the switching process, C is the specific heat capacity of water, and m is the mass of water in the instant heating mechanism 2. It should be noted that in the present invention, the value of Q / (C*m) is 0.5 to 20, and preferably, the value of Q / (C*m) is 5.

[0025] Furthermore, the water inlet mechanism 1 includes a first solenoid valve 11, a second connecting pipe 12 and a germicidal lamp 13, the water inlet end of the first solenoid valve 11 is connected to the tap water port, and the water outlet end of the first solenoid valve 11 is connected to the water inlet end of the instant heating mechanism 2 through the second connecting pipe 12; the germicidal lamp 13 is arranged in the second connecting pipe 12; the first solenoid valve 11 and the germicidal lamp 13 are both connected to the MCU 41. The present invention can prevent users from being infected by sterilizing the tap water entering the instant heating mechanism 2.

[0026] More preferably, the water circuit switching assembly 6 includes a second solenoid valve 61, which is connected to the MCU41; the second solenoid valve 61 includes a water inlet end 611 and at least two water outlet ends 612, the water inlet end 611 of the second solenoid valve 61 is connected to the water outlet end of the instant heating mechanism 2 through the first connecting pipe 9, and the water outlet end 612 of the second solenoid valve 61 is respectively connected to the first water outlet assembly 7 and the second water outlet assembly 8.

[0027] like Figure 3As shown, preferably, the second water outlet component 8 includes a water inlet part 81, a frequency conversion component 82 and a water outlet part 83, the water inlet part 81 is used to connect the water outlet end 612 of the second solenoid valve 61 and the frequency conversion component 82, and the frequency conversion component 82 is used to connect the water inlet part 81 and the water outlet part 83; the frequency conversion component 82 includes a frequency conversion pipe 821, a first sealing part 822 and an electromagnetic coil 823, the first sealing part 822 is arranged around the outer surface of the frequency conversion pipe 821 and fixed on the frequency conversion pipe 821, the electromagnetic coil 823 is arranged around the outer surface of the first sealing part 822 and fixed on the first sealing part 822; the first sealing part A first elastic member 824, a second elastic member 825, and a first magnetic member 826 disposed between the first elastic member 824 and the second elastic member 825 are disposed in the 822, the first elastic member 824 and the second elastic member 825 are both disposed around the outer surface of the frequency conversion pipeline 821 and fixed on the frequency conversion pipeline 821, a one-way valve 827 fixedly connected to the first magnetic member 826 is disposed in the first magnetic member 826, the one-way valve 827 is communicated with the frequency conversion pipeline 821, the first magnetic member 826 is disposed around the outer surface of the frequency conversion pipeline 821 and is movably connected to the frequency conversion pipeline 821; the electromagnetic coil 823 is connected to the MCU 41. Preferably, the water outlet of the one-way valve 827 faces the water outlet member 83, and the water inlet of the one-way valve 827 faces the water inlet member 81.

[0028] It should be noted that the working principle of the frequency conversion component 82 provided by the present invention is:

[0029] When the electromagnetic coil 823 is powered on, a magnetic field is generated inside the first sealing member 822. At this time, the first magnetic member 826 and the one-way valve 827 slide along the frequency conversion pipeline 821 toward the second elastic member 825 under the action of the magnetic field force, and squeeze the second elastic member 825. At this time, the second elastic member 825 stores elastic potential energy. Due to the presence of the one-way valve 827, the water in the frequency conversion pipeline 821 can only flow out toward the water outlet 83, that is, at this time, the water inlet of the one-way valve 827 basically does not enter the water, which is equivalent to being non-conductive.

[0030] When the electromagnetic coil 823 loses power, the first magnetic member 826 and the one-way valve 827 slide along the frequency conversion pipe 821 toward the first elastic member 824 under the elastic force of the second elastic member 825, and squeeze the first elastic member 824. At this time, the first elastic member 824 stores elastic potential energy, and a large amount of water continuously enters the water inlet of the one-way valve, the one-way valve is turned on, and pressurized water is formed at the water outlet 83. After the water is discharged, the first magnetic member 826 and the one-way valve 827 slide along the frequency conversion pipe 821 to the initial position (the position of the first magnetic member 826 and the one-way valve 827 before the electromagnetic coil 823 is powered on) under the elastic force of the first elastic member 824.

[0031] In this way, when the electromagnetic coil 823 is energized at a specific frequency, pressurized water will be sprayed out from the water outlet 83 at a specific frequency to meet the specific needs of the user.

[0032] Furthermore, the water inlet member 81 includes a water inlet pipe 811 and a second sealing member 812, wherein a first cavity 813 is provided in the second sealing member 812, wherein an elastic membrane 814 is provided in the first cavity 813, wherein the elastic membrane 814 divides the first cavity 813 into a sealing cavity 815 and a through cavity 816; one end of the water inlet pipe 811 is connected to the water outlet end 612 of the second solenoid valve 61, and the other end is respectively connected to the through cavity 816 and the frequency conversion pipeline 821. The water inlet pipe 811 is a "T"-shaped pipe.

[0033] It should be noted that after the electromagnetic coil 823 loses power, the first magnetic part 826 and the one-way valve 827 slide along the frequency conversion pipe 821 toward the first elastic part 824 under the elastic force of the second elastic part 825, which will form an impact force on the water in the frequency conversion pipe. When the pressure is too high, the water will directly flow back to the water inlet 81. At the same time, due to the reaction force of the water, when the electromagnetic coil 823 is powered on for the second time, the first magnetic part 826 and the one-way valve 827 will slide farther than the first time. Therefore, after the second power failure, water with a greater pressure than the first time will be formed at the water outlet 83, and the pressure stability of the sprayed water flow cannot be maintained. The present invention sets an elastic membrane 814 at the water inlet 81, so that the generated water flow pressure acts on the elastic diaphragm 814, thereby reducing the force of the water flow in the direction of the water outlet 83, thereby stabilizing the pressure of the sprayed water flow.

[0034] Preferably, the water outlet 83 includes a third connecting pipe 831 and a first spray head 832, and the first spray head 832 is connected to the frequency conversion pipeline 821 through the third connecting pipe 831. Preferably, the first spray head 832 is a shower head, but is not limited thereto.

[0035] More preferably, the first water outlet assembly 7 includes a fourth connecting pipe 71 and a second nozzle 72 , and the second nozzle 72 is connected to the water outlet end 612 of the second solenoid valve 61 through the fourth connecting pipe 71 .

[0036] like Figure 4 As shown, further, the power supply mechanism 5 includes a first power supply component 51, a rechargeable power supply 52 and a second power supply component 53, the first power supply component 51 includes a switching power supply 511, a voltage conversion circuit 512 and a first switching circuit 513, the mains power supplies the MCU41 with power through the switching power supply 511 and the voltage conversion circuit 512 in sequence; the second power supply component 53 includes a wake-up circuit 531, a second switching circuit 532, a third switching circuit 533 and a fourth switching circuit 534, the rechargeable power supply 52 supplies power to the MCU41 through the second switching circuit 532, and one end of the wake-up circuit 531 is grounded The other end of the wake-up circuit 531 is connected to the second switch circuit 532 through the third switch circuit 533, one end of the fourth switch circuit 534 is grounded, and the other end of the fourth switch circuit 534 is connected to the second switch circuit 532; the switching power supply 511 is used to control the on-off of the first switch circuit 513, the rechargeable power supply 52 and the first switch circuit 513 are both used to control the on-off of the third switch circuit 533, the fourth switch circuit 534 and the third switch circuit 533 are used to control the on-off of the second switch circuit 532, and the MCU41 is used to control the on-off of the fourth switch circuit 534.

[0037] By adopting the present invention, when there is no power outage, the MCU can be powered by the first power supply circuit without using the second power supply circuit; when there is a power outage, the user can connect the second power supply circuit by long pressing the wake-up switch, and then power the MCU through the rechargeable power supply; therefore, the present invention can still maintain power supply to the smart toilet during a power outage, thereby ensuring that the user can use the smart toilet normally.

[0038] Specifically, when there is no power outage, the AC power is converted into a stable DC voltage through the switching power supply, and then the power supply voltage of the MCU is obtained through the voltage conversion circuit, thereby ensuring the power supply of the smart toilet; since there is no power outage, the switching power supply has a normal voltage output, which can turn on the first power supply circuit, and then connect the control end of the third switch circuit to the ground. At this time, no matter whether the wake-up circuit is turned on or off, the third switch circuit is always disconnected, and the control end of the second switch circuit maintains a high level, the second switch circuit remains disconnected, and the rechargeable power supply does not power the MCU. When the power is off, the switching power supply has no voltage output and the first power supply circuit is disconnected. Therefore, the rechargeable power supply raises the level of the control end of the third switch circuit to turn on the third switch circuit. At this time, the wake-up circuit is turned on by long pressing the wake-up circuit, and then the control end of the second switch circuit is grounded. The second switch circuit is turned on, and the rechargeable power supply supplies power to the MCU; when the rechargeable power supply supplies power to the MCU, the MCU gives a high level to the control end of the fourth switch circuit. At this time, the control end of the second switch circuit can be kept grounded, and the rechargeable power supply provides stable power to the MCU; after the smart toilet is used up, the MCU gives a low level to the control end of the fourth switch circuit, the second switch circuit is disconnected, and the rechargeable power supply stops providing stable power to the MCU, waiting for the next wake-up.

[0039] More preferably, the power supply mechanism 5 further includes a charging switch circuit 54 and a low power detection circuit 55, the rechargeable power supply 52 is connected to the MCU41 through the low power detection circuit 55, and the low power detection circuit 55 is used to detect the power of the rechargeable power supply 52; the switch power supply 511 is connected to the rechargeable power supply 52 through the voltage conversion circuit 512 and the charging switch circuit 54 in turn, and the switch power supply 511 is used to charge the rechargeable power supply 52; the charging switch circuit 54 is also connected to the MCU41, and the MCU41 is used to control the on and off of the charging switch circuit 54. In the present invention, when the rechargeable power supply is low in power (the present invention sets a power threshold, when the power of the rechargeable power supply detected by the low power detection circuit is lower than the power threshold), the MCU41 gives a corresponding level signal to the charging switch circuit, and then the rechargeable power supply can be charged through the first power supply circuit. Preferably, the rechargeable power supply is a lithium battery, but is not limited thereto.

[0040] It should be noted that the wake-up circuit is composed of a wake-up switch and its peripheral circuits, the first switch circuit is composed of an NPN-type transistor and its peripheral circuits, the second switch circuit is composed of a P-channel MOS tube and its peripheral circuits, the third switch circuit is composed of an N-channel MOS tube and its peripheral circuits, the fourth switch circuit is composed of an NPN-type transistor and its peripheral circuits, and the low-power detection circuit 6 is an AD conversion circuit, which converts the analog voltage signal of the rechargeable power supply into a digital signal through the AD conversion circuit, and the MCU then adjusts the charging switch circuit according to the obtained digital signal, and the charging switch circuit is composed of an NPN-type transistor and its peripheral circuits.

[0041] It should be noted that the MCU provided by the present invention adopts a single-chip microcomputer. The single-chip microcomputer integrates many components such as an arithmetic unit, a controller, a memory, and an input / output device to realize many functions such as signal processing and data storage. For example, the arithmetic unit contains a large number of comparison circuits, which can perform logical operations on received signal instructions. Preferably, the models that can be used for the above-mentioned single-chip microcomputer include but are not limited to AT89C51.

[0042] like Figure 5 As shown, the present invention also provides a smart toilet water temperature heating method, which is implemented in any of the above-mentioned smart toilet water temperature heating devices, comprising:

[0043] S101, driving the instant heating mechanism to operate in a circulation mode, the circulation mode comprising a pre-cleaning self-cleaning mode, a cleaning mode and a post-cleaning self-cleaning mode which are operated in sequence, wherein the heating temperature of the instant heating mechanism in the pre-cleaning self-cleaning mode is T1, the heating temperature in the cleaning mode is T2, and the heating temperature in the post-cleaning self-cleaning mode is T3, and T2>T1>T3.

[0044] S102: Acquire the water temperature at the water outlet of the first connecting pipe in real time through the temperature sensor.

[0045] S103, performing PID adjustment on the heating power of the instant heating mechanism according to the real-time acquired water temperature and the heating temperature set by the instant heating mechanism.

[0046] S104, in the pre-cleaning self-cleaning mode, driving the water channel switching component to connect the first connecting pipe and the first water outlet component, and cleaning the second water outlet component through the first water outlet component.

[0047] S105, in the cleaning mode, driving the water circuit switching assembly to connect the first connecting pipe and the second water outlet assembly, and cleaning the user through the second water outlet assembly.

[0048] S106, in the post-cleaning self-cleaning mode, driving the water channel switching component to connect the first connecting pipe and the first water outlet component, and cleaning the second water outlet component through the first water outlet component.

[0049] The present invention, by operating the smart toilet water temperature heating device in a circulation mode, can predict the heat accumulated during the water path switching process so that when the user enters the cleaning stage, the water temperature just meets the set water temperature, thereby ensuring that the water temperature is always within a safe range; at the same time, in each mode, the water temperature is PID closed-loop controlled separately, further preventing temperature overshoot.

[0050] Preferably, T2=T1+Q / (C*m), T1=T3+Q / (C*m), wherein T1 is the heating temperature set in the self-cleaning mode before cleaning of the instant heating mechanism, T2 is the heating temperature set in the cleaning mode of the instant heating mechanism, T3 is the heating temperature set in the self-cleaning mode after cleaning of the instant heating mechanism, Q is the additional heat absorbed by the water in the instant heating mechanism when the water circuit switching component is temporarily blocked during the switching process, C is the specific heat capacity of water, and m is the mass of water in the instant heating mechanism. It should be noted that in the present invention, the value of Q / (C*m) is 0.5 to 20, and preferably, the value of Q / (C*m) is 5.

[0051] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A smart toilet water temperature heating device, characterized in that: It includes a water inlet mechanism, an instant heating mechanism, a water outlet mechanism, a control mechanism and a power supply mechanism; The water outlet mechanism includes a first connecting pipe, a temperature sensor, a water circuit switching assembly, a first water outlet assembly and a second water outlet assembly, the water inlet end of the first connecting pipe is connected to the instant heating mechanism, the water outlet end of the first connecting pipe is connected to the water inlet end of the water circuit switching assembly, the temperature sensor is provided at the water outlet end of the first connecting pipe and is used to detect the water temperature, and the water outlet end of the water circuit switching assembly is respectively connected to the first water outlet assembly and the second water outlet assembly; The control mechanism includes an MCU and a PID controller. The water inlet mechanism, the instant heating mechanism, the power supply mechanism, the water circuit switching component, the PID controller and the temperature sensor are all connected to the MCU. The temperature sensor is also connected to the PID controller. The PID controller is used to control the water temperature. The water circuit switching assembly includes a second solenoid valve, which is connected to the MCU; the second solenoid valve includes a water inlet end and at least two water outlet ends, the water inlet end of the second solenoid valve is connected to the water outlet end of the instant heating mechanism through the first connecting pipe, and the water outlet end of the second solenoid valve is respectively connected to the first water outlet assembly and the second water outlet assembly; The second water outlet component includes a water inlet part, a frequency conversion component and a water outlet part, the water inlet part is used to connect the water outlet end of the second solenoid valve and the frequency conversion component, and the frequency conversion component is used to connect the water inlet part and the water outlet part; the frequency conversion component includes a frequency conversion pipeline, a first sealing part and an electromagnetic coil, the first sealing part is arranged around the outer surface of the frequency conversion pipeline and fixed on the frequency conversion pipeline, the electromagnetic coil is arranged around the outer surface of the first sealing part and fixed on the first sealing part; the first sealing part is provided with a first elastic part, a second elastic part and a first magnetic part arranged between the first elastic part and the second elastic part, the first elastic part and the second elastic part are both arranged around the outer surface of the frequency conversion pipeline and fixed on the frequency conversion pipeline, the first magnetic part is provided with a one-way valve fixed to the first magnetic part, the one-way valve is communicated with the frequency conversion pipeline, the first magnetic part is arranged around the outer surface of the frequency conversion pipeline and is movably connected to the frequency conversion pipeline; the electromagnetic coil is connected to the MCU; The water inlet component includes a water inlet pipe and a second sealing component, a first cavity is provided in the second sealing component, an elastic membrane is provided in the first cavity, and the elastic membrane divides the first cavity into a sealing cavity and a through cavity; one end of the water inlet pipe is connected to the water outlet end of the second solenoid valve, and the other end is respectively connected to the through cavity and the frequency conversion pipeline; The water outlet component includes a third connecting pipe and a first nozzle, and the first nozzle is connected to the frequency conversion pipeline through the third connecting pipe.

2. The intelligent toilet water temperature heating device according to claim 1, characterized in that: The water inlet mechanism includes a first solenoid valve, a second connecting pipe and a germicidal lamp, the water inlet end of the first solenoid valve is connected to the tap water port, and the water outlet end of the first solenoid valve is connected to the water inlet end of the instant heating mechanism through the second connecting pipe; The germicidal lamp is arranged in the second connecting tube; The first solenoid valve and the germicidal lamp are both connected to the MCU.

3. The intelligent toilet water temperature heating device according to claim 1, characterized in that: The first water outlet assembly includes a fourth connecting pipe and a second nozzle, and the second nozzle is connected to the water outlet end of the second solenoid valve through the fourth connecting pipe.

4. The intelligent toilet water temperature heating device according to claim 1, characterized in that: The power supply mechanism includes a first power supply component, a rechargeable power source and a second power supply component. The first power supply component includes a switching power supply, a voltage conversion circuit and a first switching circuit, and the mains power supplies power to the MCU through the switching power supply and the voltage conversion circuit in sequence; The second power supply component includes a wake-up circuit, a second switch circuit, a third switch circuit and a fourth switch circuit, the rechargeable power supply supplies power to the MCU through the second switch circuit, one end of the wake-up circuit is grounded, and the other end of the wake-up circuit is connected to the second switch circuit through the third switch circuit, one end of the fourth switch circuit is grounded, and the other end of the fourth switch circuit is connected to the second switch circuit; The switching power supply is used to control the on and off of the first switching circuit, the rechargeable power supply and the first switching circuit are both used to control the on and off of the third switching circuit, the fourth switching circuit and the third switching circuit are used to control the on and off of the second switching circuit, and the MCU is used to control the on and off of the fourth switching circuit.

5. A method for heating water temperature of an intelligent toilet based on the intelligent toilet water heating device according to any one of claims 1 to 4, characterized in that: include: The instant heating mechanism is driven to operate in a circulation mode, wherein the circulation mode includes a pre-cleaning self-cleaning mode, a cleaning mode, and a post-cleaning self-cleaning mode that are sequentially operated, wherein the heating temperature set by the instant heating mechanism in the pre-cleaning self-cleaning mode is T1, the heating temperature set in the cleaning mode is T2, and the heating temperature set in the post-cleaning self-cleaning mode is T3, wherein T2>T1>T3; The water temperature at the water outlet of the first connecting pipe is obtained in real time by the temperature sensor; Performing PID regulation on the heating power of the instant heating mechanism according to the real-time acquired water temperature and the heating temperature set by the instant heating mechanism; In the pre-cleaning self-cleaning mode, the water channel switching component is driven to connect the first connecting pipe and the first water outlet component, and the second water outlet component is cleaned by the first water outlet component; In the cleaning mode, the water circuit switching assembly is driven to connect the first connecting pipe with the second water outlet assembly, and the user is cleaned through the second water outlet assembly; In the post-cleaning self-cleaning mode, the water channel switching component is driven to connect the first connecting pipe and the first water outlet component, and the second water outlet component is cleaned through the first water outlet component.

6. The intelligent toilet water heating method according to claim 5, characterized in that: T2=T1+Q / (C*m), T1=T3+Q / (C*m), wherein T1 is the heating temperature set for the instant heating mechanism in the self-cleaning mode before cleaning, T2 is the heating temperature set for the instant heating mechanism in the cleaning mode, T3 is the heating temperature set for the instant heating mechanism in the self-cleaning mode after cleaning, Q is the additional heat absorbed by the water in the instant heating mechanism when the water circuit switching component is temporarily blocked during the switching process, C is the specific heat capacity of water, and m is the mass of water in the instant heating mechanism.

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