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

Abstract

The invention 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 invention further provides a flushing assembly of the intelligent closestool, and the intelligent closestool outlet water over-temperature protection locking circuit is used. The invention further provides an intelligent closestool which is provided with the flushing assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to a bathroom product, in particular to an intelligent toilet. BACKGROUND

[0002] The existing intelligent toilet is integrated with a heating device, which is used for heating tap water for human body cleaning. In order to meet the household appliance use safety specification, it is necessary to ensure that when the internal heating device of the heating device appears abnormal condition, the hot water exceeding the set temperature will not be sprayed to the human body to cause the human body to be scalded.

[0003] At present, a temperature control switch is arranged on the heating device, when the fluid of the heating device is heated, the temperature control switch is heated to exceed the set temperature of the control, the physical conductive path in the temperature control switch will be disconnected, the heating power supply is cut off, so that the heating device will not work again. However, the temperature control switch has defects such as slow heat transfer and long reaction time. From the detection of the control temperature to the disconnection of the conduction circuit, usually several seconds are needed, and in these several seconds, the heating device is still heating. Therefore, the safety reliability of the temperature control switch for controlling the heating device is poor.

[0004] And this way can not rule out the security risks, once the water temperature decreases, the temperature control switch will restore the circuit conduction and heating, so it is possible to appear the problem of over temperature again, which can not fundamentally solve the problem. SUMMARY

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

[0006] In order to solve the above technical problems, the present application provides an intelligent toilet water over-temperature protection locking circuit, which comprises: a comparison circuit, a locking circuit and a switching circuit.

[0007] The switching circuit is connected between the mains and the heating circuit, and the mains and the heating circuit are connected or disconnected through the conduction and disconnection of the switching circuit.

[0008] The comparison circuit is used for detecting the water temperature of the instant heating assembly of the intelligent toilet and comparing it with the set threshold value, if it is higher than the set threshold value, the comparison circuit controls the switching circuit to switch from the conduction state to the disconnection state.

[0009] The locking circuit is used for locking the switching circuit in the disconnection state after the switching circuit is switched from the conduction state to the disconnection state, until the system is powered off and powered on again.

[0010] In a preferred embodiment: the comparison circuit comprises a temperature sensor and a Zener diode; the output of the temperature sensor is connected to the R terminal of the Zener diode, and the Zener diode is connected between the first power supply terminal of the switching circuit and the GND;

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

[0012] In a preferred embodiment: the switching circuit comprises a switching tube Q4 and a relay, and the relay is connected between the mains and the heating loop; 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 the GND;

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

[0014] In a preferred embodiment: the locking circuit comprises switching tubes Q1 and Q3, and the switching tube Q3 is connected between the first power supply terminal and the GND; the control electrode of the switching tube Q1 is connected to the first power supply terminal, and the switching tube Q1 is connected between the second power supply terminal and the control electrode of the switching tube Q3;

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

[0016] The application also provides a flushing assembly of an intelligent toilet, which uses the intelligent toilet outlet water over-temperature protection locking circuit according to any one of claims 1-4.

[0017] In a preferred embodiment: the flushing assembly comprises a water inlet joint, an electromagnetic 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 electromagnetic valve via the water inlet joint; the outlet of the water tank is connected to the telescopic flushing head through the water pump and the instant heating assembly.

[0019] In a preferred embodiment: the telescopic flushing head is provided with an anal washing water path, a self-cleaning water path, and a female washing water path, and the outlet of the instant heating assembly is connected to different outlet water paths through a reversing valve.

[0020] The application also provides an intelligent toilet equipped with the flushing assembly as described above.

[0021] Compared with the prior art, the technical scheme of the application has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The schematic diagram of the flushing assembly in the preferred embodiment of the present application;

[0023] Figure 2 The schematic diagram of the water path of the flushing assembly in the preferred embodiment of the present application;

[0024] Figure 3 The schematic diagram of the power supply of the flushing assembly in the preferred embodiment of the present application;

[0025] Figure 4 The circuit diagram of the water outlet over-temperature protection locking circuit in the preferred embodiment of the present application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings; obviously, the described embodiments are only a part of the embodiments of the present application, and not all the embodiments of the present application, and all other embodiments obtained by a person of ordinary skill in the art without creative effort on the basis of the embodiments in the present application shall fall within the protection scope of the present application.

[0027] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms “mounting”, “provided with”, “sleeved / connected”, “connected” and the like shall be understood in a broad sense, for example, “connected” can be wall-mounted connection, can be detachable connection, or integral connection, can be mechanical connection, can be electrical connection, can be direct connection, or indirect connection through an intermediate medium, can be the communication inside two elements, and those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0028] Reference Figures 1-2 The present embodiment provides a flushing assembly of an intelligent toilet, which comprises a water inlet joint 1, an electromagnetic valve 2, a water tank 3, a telescopic flushing head 4 and a water pump 5; the water inlet joint 1 is connected to the water tank 3 through the electromagnetic 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 a instant heating assembly 6, the water outlet of the instant heating assembly 6 is connected to a reversing valve 8 through a high-temperature temperature sensor 7, and each outlet of the reversing valve 8 is respectively communicated to a hip washing water path, a self-cleaning water path and a women washing water path arranged in the telescopic flushing head 4; in this way, the hip washing water outlet, the self-cleaning water outlet or the women washing water outlet can be realized through the reversing valve 8. The telescopic flushing head 4 is partially a structure widely existing in the prior art, and the improvement of the present embodiment does not involve this part of structure, so the structure is not further described, and those skilled in the art can adopt the known structure in the prior art.

[0029] After the above setting, as long as the electromagnetic valve 2 is opened, the water in the municipal pipe network can be sent to the water tank 3 through the electromagnetic valve 2, and the electromagnetic valve 2 is closed after the water tank 3 is filled with a predetermined amount of water; the water in the water tank 3 is pumped to the instant heating assembly 6 by the water pump 5 for heating, and after being heated to a predetermined temperature, it is sent to the reversing valve 8, which sends the heated water to the hip washing water path or the self-cleaning water path or the female washing water path according to the current function to be implemented.

[0030] The high-temperature temperature sensor 7 detects the outlet water temperature of the instant heating assembly 6, and cooperates with the intelligent toilet outlet over-temperature protection locking circuit arranged on the power board to disconnect the instant heating assembly 6 and the mains when the outlet water temperature abnormally rises, so that the heating function is disabled, and safety is ensured.

[0031] Therefore, the intelligent toilet outlet over-temperature protection locking circuit in the embodiment includes a comparison circuit, a locking circuit and a switching circuit.

[0032] The switching circuit is connected between the mains and the heating loop of the instant heating assembly 6, and the mains and the heating loop are connected or disconnected through the conduction and disconnection of the switching circuit;

[0033] The comparison circuit is used to detect the outlet water temperature of the instant heating assembly 6 of the intelligent toilet and compare it with the set threshold value, and if it is higher than the set threshold value, the comparison circuit controls the switching circuit to switch from the conduction state to the disconnection state;

[0034] The locking circuit is used to lock the switching circuit in the disconnection state after the switching circuit switches from the conduction state to the disconnection state, until the system is powered off and then powered on again. The function of the locking circuit is to avoid the situation that after the heating is disconnected and the outlet water temperature of the instant heating assembly 6 drops, the comparison circuit controls the switching circuit to return to the conduction state, at this time the heating loop of the instant heating assembly 6 is powered on again, which may cause the outlet water temperature to abnormally rise again, and then the above process is repeated.

[0035] In the embodiment, the comparison circuit includes the 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 of the switching circuit and GND; the resistance of the high-temperature temperature sensor 7 decreases as the temperature rises, so that when the outlet water temperature is higher than the set threshold value, the R end voltage of the zener diode U1 is pulled up to the conduction voltage, and the zener diode U1 is connected between the first power supply end and GND, so that the voltage of the first power supply end is pulled down.

[0036] Correspondingly, the switching circuit includes a switching transistor Q4 and a relay K1, with the relay K1 connected between the mains power and the heating circuit. The control electrode of the switching transistor Q4 is connected to the first power supply terminal, and the switching transistor is connected between the relay K1 and GND. When the first power supply terminal is not connected to GND, the control electrode of the switching transistor Q4 is connected to the first power supply terminal, and the voltage of the first power supply terminal is 5V at this time. Therefore, the switching transistor Q4 is turned on, and the relay K1 is energized and turned on. When the first power supply terminal is connected to GND, the control electrode of the switching transistor Q4 is connected to the first power supply terminal. Since the voltage of the first power supply terminal is pulled low at this time, the switching transistor Q4 is turned off, and the relay K1 is de-energized and disconnected.

[0037] To ensure that relay K1 remains locked in the open state after being de-energized, the locking circuit includes switching transistors 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 Q4 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 conducts, connecting the control electrode of switch Q3 to the second power supply terminal. With switch Q3 conducting, the first power supply terminal is constantly pulled low, keeping the control electrode of switch Q4 constantly connected to GND. This locks switch Q4 in the open state, thus locking relay K1 in the de-energized open state. This effectively prevents relay K1 from being energized and conducting again after the outlet water temperature drops. The relay can only be reset after the system is powered off and then powered on again.

[0038] In addition to the over-temperature protection and locking circuit for the smart toilet's water outlet, the circuit board also needs a power supply circuit. For specific power supply details, please refer to [reference needed]. Figure 3 The schematic diagram shows that the high-voltage section mainly supplies power to relay K1, thyristor, and instant heating component 6 via mains power. The low-voltage section mainly enables communication between various sensors, the main control unit, and buttons.

[0039] The aforementioned flushing components for smart toilets can be widely installed and used in various smart toilets. Further details are omitted in this embodiment.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. Any technically equivalent modifications made based on the content of this specification shall fall within the protection scope of the present invention.

Claims

1. A water outlet over-temperature protection locking circuit for a smart toilet, characterized in that The application relates to a temperature protection locking circuit for a bidet. The application relates to a temperature protection locking circuit for a bidet. The application relates to a temperature protection locking circuit for a bidet. The application relates to a temperature protection locking circuit for a bidet. The application relates to a temperature protection locking circuit for a bidet.

2. The intelligent toilet outlet water over-temperature protection locking circuit according to claim 1, characterized in that: The application relates to a temperature protection locking circuit for a bidet. The application relates to a temperature protection locking circuit for a bidet.

3. The intelligent toilet outlet water over-temperature protection locking circuit according to claim 2, characterized in that: The application relates to a temperature protection locking circuit for a bidet. The application relates to a temperature protection locking circuit for a bidet.

4. The intelligent toilet outlet water over-temperature protection locking circuit according to claim 3, characterized in that: The application relates to a temperature protection locking circuit for a bidet. The application relates to a temperature protection locking circuit for a bidet.

5. A washing assembly of a smart toilet, characterized by: The application relates to a temperature protection locking circuit for a bidet.

6. The washing assembly of the intelligent toilet according to claim 5, characterized in that: The application relates to a temperature protection locking circuit for a bidet. The application relates to a temperature protection locking circuit for a bidet.

7. The washing assembly of the intelligent toilet according to claim 6, characterized in that: The application relates to a temperature protection locking circuit for a bidet.

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