Intelligent closestool outlet water over-temperature protection locking circuit, flushing assembly and intelligent closestool

Abstract

The utility model provides a water outlet over-temperature protection locking circuit of an intelligent closestool. The water outlet over-temperature protection locking circuit comprises a comparison circuit, a locking circuit and a switching circuit, the switching circuit is connected between the mains supply and the heating loop, and the mains supply and the heating loop are connected or disconnected through connection and disconnection of the switching circuit; the comparison circuit is used for detecting the outlet water temperature of an instant heating assembly of the intelligent closestool and comparing the outlet water temperature with a set threshold value, and if the outlet water temperature is higher than the set threshold value, the comparison circuit controls the switching circuit to be switched from the on state to the off state; and the locking circuit is used for locking the switching circuit in the off state after the switching circuit is switched from the on state to the off state until the system is powered off and then powered on again. The utility model further provides a flushing assembly of the intelligent closestool, and the intelligent closestool outlet water over-temperature protection locking circuit is used in the flushing assembly. The utility model further provides an intelligent closestool which is provided with the flushing assembly.

Description

Technical Field

[0001] The utility model relates to a bathroom product, in particular to an intelligent toilet. Background Art

[0002] Existing smart toilets are equipped with integrated heating devices that heat tap water for washing. To meet safety regulations for household appliances, this device must ensure that if the internal heating element malfunctions, hot water exceeding the set temperature will not spray onto the body, potentially causing burns.

[0003] Currently, heating devices are equipped with temperature-controlled switches. When the fluid in the heating device is heated and the temperature switch exceeds the set temperature, the physical conductive path within the switch is disconnected, cutting off the heating power supply and causing the heating device to stop functioning. However, temperature-controlled switches suffer from slow heat transfer and long response times. The process from detecting the controlled temperature to disconnecting the conductive circuit typically takes several seconds, during which the heating device continues to heat. Therefore, using temperature-controlled switches to control heating devices is unsafe and unreliable.

[0004] Moreover, this method cannot eliminate safety hazards. Once the water outlet temperature drops, the temperature control switch will turn on the circuit and resume heating, which is likely to cause overheating again and cannot fundamentally solve the problem. Utility Model Content

[0005] The main technical problem to be solved by the utility model is to provide an intelligent toilet water outlet over-temperature protection locking circuit, which can shut down the heating function when the outlet water temperature of the instant heating component is too high and keep the heating function in the off state.

[0006] In order to solve the above technical problems, the utility model provides an intelligent toilet water outlet over-temperature protection locking circuit, comprising: a comparison circuit, a locking circuit and a switch circuit;

[0007] The switch circuit is connected between the mains power and the heating circuit, and connects or disconnects the mains power and the heating circuit by turning the switch circuit on and off;

[0008] The comparison circuit is used to detect the outlet water temperature of the instant heating component of the smart toilet and compare it with a set threshold value. If it is higher than the set threshold value, the comparison circuit controls the switch circuit to switch from the on state to the off state;

[0009] The locking circuit is used to lock the switch circuit in the disconnected state after the switch circuit is switched from the on state to the off state until the system is powered off and then powered on again.

[0010] In a preferred embodiment, the comparison circuit includes a temperature sensor and a voltage-stabilizing diode; the output end of the temperature sensor is connected to the R end of the voltage-stabilizing diode, and the voltage-stabilizing diode is connected between the first power supply end of the switching circuit and GND;

[0011] The resistance of the temperature sensor decreases as the temperature increases, so when the outlet water temperature is higher than the set threshold, the voltage at the R terminal of the Zener diode is pulled up to the conduction voltage, and the Zener diode is turned on to connect the first power supply terminal to GND.

[0012] In a preferred embodiment, the switching circuit includes a switching tube Q4 and a relay, wherein the relay is connected between the mains and the heating circuit; the control electrode of the switching tube Q4 is connected to the first power supply terminal, and the switching tube is connected between the relay and GND;

[0013] When the first power supply end is not connected to GND, the switch tube Q4 is turned on and the relay is turned on; when the first power supply end is connected to GND, the switch tube Q4 is turned off and the relay is turned off.

[0014] In a preferred embodiment, the locking circuit includes switches Q1 and Q3, wherein the switch Q3 is connected between the first power supply terminal and GND; the control electrode of the switch Q1 is connected to the first power supply terminal, and the switch Q1 is connected between the second power supply terminal and the control electrode of the switch Q3;

[0015] When the first power supply end is connected to GND, the switch tube Q1 is turned on, and the switch tube Q3 is turned on, so that the control electrode of the switch tube Q4 is always connected to GND.

[0016] The utility model also provides a flushing assembly of an intelligent toilet, which uses the intelligent toilet water outlet over-temperature protection locking circuit as described above.

[0017] In a preferred embodiment: the flushing assembly includes a water inlet connector, a solenoid valve, a water tank, a telescopic flushing head and a water pump;

[0018] The water in the municipal pipe network is sent to the water tank through the water inlet joint and the solenoid valve; the water outlet of the water tank is connected to the telescopic flushing head through a water pump and an instant heating component.

[0019] In a preferred embodiment: the telescopic flushing head is provided with a buttock washing water path, a self-cleaning water path and a women's washing water path, and the water outlet end of the instant heating component is connected to different water outlet water paths through a reversing valve.

[0020] The utility model also provides an intelligent toilet equipped with the flushing assembly described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a schematic diagram of a flushing assembly in a preferred embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the water path of the flushing assembly in a preferred embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the power supply of the flushing component in the preferred embodiment of the present utility model;

[0024] Figure 4 This is a circuit diagram of the water outlet over-temperature protection locking circuit in a preferred embodiment of the present utility model. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative work shall fall within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] refer to Figure 1-Figure 2 This embodiment provides a flushing assembly for an intelligent toilet, which includes a water inlet connector 1, a solenoid valve 2, a water tank 3, a telescopic flushing head 4, and a water pump 5; the water inlet connector 1 is connected to the water tank 3 via the solenoid valve 2, the water outlet of the water tank 3 is connected to the water inlet of the water pump 5, the water outlet of the water pump 5 is connected to the instant heating assembly 6, the water outlet of the instant heating assembly 6 is connected to the reversing valve 8 via the high-temperature temperature sensor 7, and the outlets of the reversing valve 8 are respectively connected to the buttocks washing water path, the self-cleaning water path, and the women's washing water path provided in the telescopic flushing head 4; in this way, the reversing valve 8 can realize the buttocks washing water outlet, the self-cleaning water outlet, or the women's washing water outlet. The telescopic flushing head 4 is a structure that is widely present in the prior art. The improvement of this embodiment does not involve the structure of this part, so its structure will not be further described. Those skilled in the art can adopt the known structure in the prior art.

[0028] After the above settings, as long as the solenoid valve 2 is opened, the water in the municipal pipeline can be sent to the water tank 3 through the water inlet joint 1 through the solenoid valve 2. After the water tank 3 is filled with a predetermined amount of water, the solenoid valve 2 can be closed; the water in the water tank 3 is pumped to the instant heating component 6 through the water pump 5 for heating, and after being heated to a predetermined temperature, it is sent to the reversing valve 8. The reversing valve 8 sends the heated water into the buttock washing water channel, the self-cleaning water channel or the women's washing water channel according to the current function to be achieved.

[0029] The function of the high-temperature temperature sensor 7 is to detect the outlet water temperature of the instant heating component 6, and cooperate with the smart toilet water outlet over-temperature protection locking circuit set on the power board to disconnect the instant heating component 6 from the mains when the outlet water temperature rises abnormally, thereby making the heating function invalid and ensuring safety.

[0030] To this end, the intelligent toilet water outlet over-temperature protection locking circuit in this embodiment includes: a comparison circuit, a locking circuit and a switch circuit;

[0031] The switch circuit is connected between the mains power and the heating circuit of the instant heating component 6, and the mains power and the heating circuit are connected or disconnected by turning on and off the switch circuit;

[0032] The comparison circuit is used to detect the outlet water temperature of the instant heating component 6 of the smart toilet and compare it with a set threshold value. If it is higher than the set threshold value, the comparison circuit controls the switch circuit to switch from the on state to the off state;

[0033] The locking circuit is used to lock the switch circuit in the off state after the switch circuit switches from the on state to the off state until the system is powered off and then back on. The locking circuit is used to prevent the comparison circuit from re-controlling the switch circuit back to the on state after the water temperature of the outlet water of the heating component 6 drops after the heating is turned off. At this time, the heating circuit of the heating component 6 is powered on again, which may cause the water temperature of the outlet water to rise abnormally again, and then repeat the above process.

[0034] In this embodiment, the comparison circuit includes the above-mentioned high-temperature temperature sensor 7 and the Zener diode U1; the output end of the temperature sensor is connected to the R end of the Zener diode U1, and the Zener diode U1 is connected between the first power supply end and GND of the switching circuit; the resistance of the high-temperature temperature sensor 7 decreases as the temperature increases, so that when the outlet water temperature is higher than the set threshold, the R end voltage of the Zener diode U1 is pulled up to the conduction voltage, and the Zener diode U1 is turned on to connect the first power supply end with GND, so that the voltage of the first power supply end is pulled down.

[0035] In conjunction with it, the switching circuit includes a switch tube Q4 and a relay K1, and the relay K1 is connected between the AC power and the heating circuit; the control electrode of the switch tube Q4 is connected to the first power supply end, and the switch tube is connected between the relay K1 and GND; when the first power supply end is not connected to GND, the control electrode of the switch tube Q4 is connected to the first power supply end, and the voltage of the first power supply end is 5v at this time, so the switch tube Q4 is turned on and the relay K1 is powered on; when the first power supply end is connected to GND, the control electrode of the switch tube Q4 is connected to the first power supply end. Since the voltage of the first power supply end is pulled down at this time, the switch tube Q4 is disconnected and the relay K1 loses power and disconnects.

[0036] To ensure relay K1 is locked in the disconnected state whenever it loses power and disconnects, the locking circuit includes switches Q1 and Q3. Switch Q3 is connected between the first power supply terminal and GND. The control electrode of switch Q1 is connected to the first power supply terminal, and switch Q1 is connected between the second power supply terminal and the control electrode of switch Q3. When the first power supply terminal is connected to GND, switch Q1 turns on, connecting the control electrode of switch Q3 to the second power supply terminal. This turns on switch Q3, and after switch Q3 turns on, the first power supply terminal is permanently pulled low, causing the control electrode of switch Q4 to remain connected to GND. This locks switch Q4 in the disconnected state, thereby locking relay K1 in the disconnected state. This effectively prevents relay K1 from becoming electrically conductive again after the outlet water temperature drops. A reset is possible only after the system is powered off and then back on.

[0037] In addition to the above-mentioned smart toilet water over-temperature protection lock circuit, the circuit board also needs to set up a power supply circuit to realize power supply. For specific power supply, please refer to Figure 3 As shown in the schematic diagram, the strong current part mainly supplies power to the relay K1, thyristor, instant heating component 6, etc. through the mains. The weak current part mainly realizes the communication between each sensor and the main control unit and buttons.

[0038] The flushing assembly of the above-mentioned intelligent toilet can be widely installed in various intelligent toilets for use.

[0039] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any technical equivalent transformation made using the contents of the present invention specification falls within the protection scope of the present invention.

Claims

1. Intelligent toilet water over-temperature protection lock circuit, characterized by include: Comparison circuit, locking circuit and switching circuit; The switch circuit is connected between the mains power and the heating circuit, and connects or disconnects the mains power and the heating circuit by turning the switch circuit on and off; The comparison circuit is used to detect the outlet water temperature of the instant heating component of the smart toilet and compare it with a set threshold value. If it is higher than the set threshold value, the comparison circuit controls the switch circuit to switch from the on state to the off state; The locking circuit is used to lock the switch circuit in the disconnected state after the switch circuit is switched from the on state to the off state until the system is powered off and then powered on again.

2. The intelligent toilet water outlet over-temperature protection locking circuit according to claim 1, characterized in that: The comparison circuit includes a temperature sensor and a voltage-stabilizing diode; the output end of the temperature sensor is connected to the R end of the voltage-stabilizing diode, and the voltage-stabilizing diode is connected between the first power supply end of the switching circuit and GND; The resistance of the temperature sensor decreases as the temperature increases, so when the outlet water temperature is higher than the set threshold, the voltage at the R terminal of the Zener diode is pulled up to the conduction voltage, and the Zener diode is turned on to connect the first power supply terminal to GND.

3. The intelligent toilet water outlet over-temperature protection locking circuit according to claim 2, characterized in that: The switching circuit includes a switching tube Q4 and a relay, wherein the relay is connected between the mains and the heating circuit; the control electrode of the switching tube Q4 is connected to the first power supply end, and the switching tube is connected between the relay and GND; When the first power supply end is not connected to GND, the switch tube Q4 is turned on and the relay is turned on; when the first power supply end is connected to GND, the switch tube Q4 is turned off and the relay is turned off.

4. The intelligent toilet water outlet over-temperature protection locking circuit according to claim 3, characterized in that: The locking circuit includes switches Q1 and Q3, wherein the switch Q3 is connected between the first power supply terminal and GND; the control electrode of the switch Q1 is connected to the first power supply terminal, and the switch Q1 is connected between the second power supply terminal and the control electrode of the switch Q3; When the first power supply end is connected to GND, the switch tube Q1 is turned on, and the switch tube Q3 is turned on, so that the control electrode of the switch tube Q4 is always connected to GND.

5. A flushing assembly for an intelligent toilet, characterized in that: The intelligent toilet water outlet over-temperature protection locking circuit according to any one of claims 1 to 4 is used.

6. The flushing assembly of a smart toilet according to claim 5, characterized in that: The flushing assembly includes a water inlet connector, a solenoid valve, a water tank, a telescopic flushing head and a water pump; The water in the municipal pipe network is sent to the water tank through the water inlet joint and the solenoid valve; the water outlet of the water tank is connected to the telescopic flushing head through a water pump and an instant heating component.

7. The flushing assembly of a smart toilet according to claim 6, characterized in that: The telescopic flushing head is provided with a buttocks washing water channel, a self-cleaning water channel and a women's washing water channel, and the water outlet end of the instant heating component is connected to different water outlet water channels through a reversing valve.

8. A smart toilet, characterized in that The flushing assembly according to any one of claims 5 to 7 is assembled.

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