Low-voltage heating drive circuit and toilet device

Abstract

The utility model discloses a low pressure heating drive circuit and closestool device, be applied to closestool device, closestool device has water storage cavity, heating part and seat circle board, be provided with heat exchange runner in seat circle board, heat exchange runner is linked with water storage cavity, and heating part is located in water storage cavity or heat exchange runner, and low pressure heating drive circuit includes power supply modulation module, first drive module, heating control, water detecting sensor, water temperature sensor and control module, and power supply modulation module will the output voltage of power supply voltage modulation supply voltage, and first drive module is used for with closestool device's heating part connection, and the output of power supply modulation module is connected with first drive branch, and heating control sets up in closestool device, and water detecting sensor is located in heat exchange runner, and water temperature sensor is located in water storage cavity or heat exchange runner, and control module is connected with heating control, water detecting sensor, water temperature sensor and the controlled end of first drive module respectively, and safe and reliable are used.

Description

Technical Field

[0001] This utility model relates to the field of bathroom equipment technology, and in particular to a low-pressure heating drive circuit and a toilet device. Background Technology

[0002] With the development of smart home technology, smart toilets with heating functions have gradually become the mainstream in the market, and their seat heating function can improve the comfort of users in winter.

[0003] The existing seat heating methods for smart toilets basically involve installing heating wires inside the seat ring. The heating wires generate heat and conduct it to the surface of the seat ring. However, there are certain safety hazards. For example, if the seat ring overheats and high-voltage power is used, the probability of people coming into contact with the seat ring is relatively high due to the high humidity environment of the bathroom. If leakage or insulation failure occurs, there is a risk of electric shock. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a low-pressure heating drive circuit and a toilet device that are safe and reliable to use.

[0005] A low-voltage heating drive circuit according to a first aspect of the present invention is applied to a toilet device. The toilet device has a water storage chamber, a heating element, and a seat plate. A heat exchange channel is provided in the seat plate and communicates with the water storage chamber. The heating element is located in the water storage chamber or the heat exchange channel. The circuit is characterized by comprising: a power modulation module, the input terminal of which is connected to a power supply, the power modulation module being used to modulate the output voltage of the power supply to a supply voltage, wherein the supply voltage is less than 36V; a first drive module, which is connected to the heating element of the toilet device to form at least a portion of a first drive branch, the output terminal of which is connected to the first drive branch; a heating control element disposed in the toilet device; a water detection sensor located in the heat exchange channel; a water temperature sensor located in the water storage chamber or the heat exchange channel; and a control module, which is connected to the heating control element, the water detection sensor, the water temperature sensor, and the controlled end of the first drive module.

[0006] A low-pressure heating drive circuit according to an embodiment of the present invention has at least the following beneficial effects: This utility model relates to a low-voltage heating drive circuit applied to a water-heated toilet. The toilet seat has a heat exchange channel. When the user uses the toilet, they can operate the heating control to generate a heating electrical signal. A water sensor detects whether there is water in the heat exchange channel. If so, and the water temperature sensor detects that the water temperature has not reached the required value, the control module controls the heating element to heat the water based on the heating electrical signal. Because the power supply voltage output by the power modulation module is less than 36V, which is below the safe voltage for the human body, even if there is a leakage, it is unlikely to cause harm. Furthermore, the water in the heat exchange channel can exchange heat with the water in the storage chamber, transferring heat from the water to the seat, preventing excessive temperature rise in the seat, thus ensuring safe and reliable use.

[0007] According to some embodiments of the present invention, the power modulation module includes a first step-down unit and a second step-down unit. The input terminal of the first step-down unit is used to connect to a power supply. The first step-down unit is used to modulate the output voltage of the power supply to a first power supply voltage. The output terminal of the first step-down unit is connected to the first drive branch and the input terminal of the second step-down unit, respectively. The second step-down unit is used to modulate the first power supply voltage to a second power supply voltage. The output terminal of the second step-down unit is connected to a control module. The first power supply voltage and the second power supply voltage are both less than 36V.

[0008] According to some embodiments of the present invention, the first driving module includes a semiconductor switch Q1, a diode D5, a resistor R14, and a resistor R17. The control module is connected to the first end of the resistor R17, and the last end of the resistor R17 is connected to the first end of the resistor R14 and the controlled end of the switch Q1. The input end of the switch Q1 is connected to the heating element to form at least part of the first driving branch. The diode D5 is connected in parallel with the heating element, and the output end of the switch Q1 is grounded.

[0009] According to some embodiments of the present invention, the low-pressure heating drive circuit further includes a cleaning control component, a nozzle assembly, and a second drive module disposed on the toilet device. The nozzle assembly is connected to the water storage chamber. The second drive module and the nozzle assembly are connected to form at least a portion of the second drive branch. The output terminal of the power modulation module is connected to the second drive branch. The control module is connected to the cleaning control component and the controlled terminal of the second drive branch, respectively.

[0010] According to some embodiments of the present invention, the nozzle assembly includes a solenoid valve and a spray gun. The first end of the solenoid valve is connected to the water storage chamber through a pipe, and the tail end of the solenoid valve is connected to the spray gun through a pipe. The solenoid valve is connected to the second drive module to form at least a portion of the second drive branch.

[0011] According to some embodiments of the present invention, the second driving module includes a semiconductor switch Q2, a diode D3, a resistor R10, and a resistor R11. The control module is connected to the first end of the resistor R10, and the last end of the resistor R10 is connected to the first end of the resistor R11 and the controlled end of the switch Q2. The input end of the switch Q2 is connected to the solenoid valve to form at least part of the second driving branch. The diode D3 is connected in parallel with the solenoid valve, and the output end of the switch Q2 is grounded.

[0012] According to some embodiments of the present invention, the low-pressure heating drive circuit further includes a timing module, and the control module is connected to the timing module.

[0013] According to some embodiments of the present invention, the low-pressure heating drive circuit further includes an LED indicator module, and the control module is connected to the LED indicator module to drive the LED indicator module to be constantly lit, constantly off, or flashing.

[0014] The toilet device according to a second aspect of the present invention includes the low-pressure heating drive circuit disclosed in any of the above embodiments.

[0015] The toilet device according to the embodiments of this utility model has at least the following beneficial effects: The toilet device of this utility model uses the low-pressure heating drive circuit disclosed in any of the above embodiments, and is safe and reliable to use.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic block diagram of one embodiment of the low-pressure heating drive circuit of this utility model; Figure 2 This is a circuit diagram of the power modulation module of one embodiment of the low-voltage heating drive circuit of this utility model. Figure 3 This is a circuit diagram of the heating control component and the cleaning control component in one embodiment of the low-pressure heating drive circuit of this utility model. Figure 4 This is a circuit diagram of the control module, the first drive module, and the second drive module of one embodiment of the low-pressure heating drive circuit of this utility model.

[0018] Figure label: Power modulation module 100; second step-down unit 110; control module 200; heating control component 310; cleaning control component 320; first drive module 410; second drive module 420; water detection sensor 510; water temperature sensor 520; heating component 610; solenoid valve 620; timing module 700; LED indicator module 800. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1 to 4As shown, a low-pressure heating drive circuit according to a first aspect embodiment of the present invention is applied to a toilet device. The toilet device has a water storage chamber, a heating element 610, and a seat plate. A heat exchange channel is provided in the seat plate and communicates with the water storage chamber. The heating element 610 is located in the water storage chamber or the heat exchange channel. The low-pressure heating drive circuit includes a power modulation module 100, a first drive module 410, a heating control element 310, a water detection sensor 510, a water temperature sensor 520, and a control module 200. The input terminal of the power modulation module 100 is used to connect to a power supply. The power modulation module 100 is used for... The output voltage of the power supply is modulated to a supply voltage, wherein the supply voltage is less than 36V. The first drive module 410 is used to connect with the heating element 610 of the toilet device to form at least part of the first drive branch. The output terminal of the power modulation module 100 is connected to the first drive branch. The heating control element 310 is disposed in the toilet device. The water detection sensor 510 is located in the heat exchange channel. The water temperature sensor 520 is located in the water storage chamber or the heat exchange channel. The control module 200 is connected to the heating control element 310, the water detection sensor 510, the water temperature sensor 520 and the controlled terminal of the first drive module 410 respectively.

[0024] The toilet device includes a toilet body and a seat plate that is rotatably mounted on the toilet body. The toilet body may also be equipped with a water tank, which has a flushing chamber. It should be noted that the flushing chamber and the water storage chamber are two independent chambers. The toilet body is equipped with a flush button and a switch valve. The switch valve is connected to the flushing chamber and the toilet's flush outlet, respectively. The flush button can drive the switch valve to open to perform the flushing action.

[0025] The seat plate is equipped with inlet and outlet water ports, and sealing joints are provided at the inlet and outlet water ports. The first end of the hose can be connected to the heat exchange channel through the sealing joint, and the last end of the hose is connected to the water storage chamber.

[0026] The heating element 610 can be a resistance wire, a heating rod, or a semiconductor heating element. The water level sensor 510 can be a conventional water level sensor. The water level sensor 510 is installed in the heat exchange channel. When water enters the heat exchange channel, the water level sensor 510 outputs an electrical signal indicating that there is water in the heat exchange channel. Specifically, the water in the water storage chamber can be replenished by an external water source. The water temperature sensor 520 can be a conventional temperature sensor. The control module 200 can include an MCU or CPU and its auxiliary circuits. The heating control element 310 can be a button or a touch key. When the user operates the heating control element 310, the heating control element 310 generates an electrical signal and outputs it to the control module 200.

[0027] This utility model relates to a low-voltage heating drive circuit applied to a water-heated toilet. The toilet seat has a heat exchange channel. When the user uses the toilet, they can operate the heating control element 310 to generate a heating electrical signal. The water detection sensor 510 detects whether there is water in the heat exchange channel. If so, and the water temperature sensor 520 detects that the water temperature has not reached the required value, the control module 200 controls the heating element 610 to heat the water according to the heating electrical signal. Because the power supply voltage output by the power modulation module 100 is less than 36V, which is below the safe voltage for the human body, even if there is a leakage, it is unlikely to cause harm. Furthermore, the water in the heat exchange channel can exchange with the water in the storage chamber, transferring heat from the water to the seat, preventing excessive temperature rise in the seat, ensuring safe and reliable use.

[0028] In some embodiments of this utility model, the power modulation module 100 includes a first step-down unit (in the figure) and a second step-down unit 110. The input terminal of the first step-down unit is used to connect to the power supply. The first step-down unit is used to modulate the output voltage of the power supply to a first power supply voltage. The output terminal of the first step-down unit is connected to the first drive branch and the input terminal of the second step-down unit 110 respectively. The second step-down unit 110 is used to modulate the first power supply voltage to a second power supply voltage. The output terminal of the second step-down unit 110 is connected to the control module 200. The first power supply voltage and the second power supply voltage are both less than 36V.

[0029] The first step-down unit may include a rectifier circuit, a filter circuit, and a switching power supply circuit. The input terminal of the first step-down unit can be connected to a 220V AC power supply. The rectifier circuit steps down the AC power supply, the filter circuit performs filtering, and the switching power supply circuit regulates the voltage to modulate the 220V output voltage into a first supply voltage, which may be 24V, 16V, etc.

[0030] The second step-down unit 110 may include a voltage regulator chip and auxiliary circuitry. The voltage regulator chip may be an MC33063A chip. The second step-down unit 110 steps down the first supply voltage to a second supply voltage. The second supply voltage may be a 5V or 3.3V voltage level adapted to the control module 200.

[0031] In some embodiments of this utility model, such as Figure 4As shown, the first driving module 410 includes a semiconductor switch Q1, a diode D5, a resistor R14, and a resistor R17. The control module 200 is connected to the first end of the resistor R17. The last end of the resistor R17 is connected to the first end of the resistor R14 and the controlled end of the switch Q1. The input end of the switch Q1 is connected to the heating element 610 to form at least part of the first driving branch. The diode D5 is connected in parallel with the heating element 610. The output end of the switch Q1 is grounded.

[0032] The control module 200 controls the switch Q1 to conduct, and the heating element 610 is energized and heats up. Generally speaking, when the water temperature in the water storage chamber is below 38°C, the control module 200 controls the heating element 610 to heat up, and when the water temperature in the water storage chamber reaches 38°C, the heating stops.

[0033] In some embodiments of this utility model, such as Figure 3 , 4 As shown, the low-pressure heating drive circuit also includes a cleaning control unit 320, a nozzle assembly, and a second drive module 420 disposed in the toilet device. The nozzle assembly is connected to the water storage chamber. The second drive module 420 and the nozzle assembly are connected to form at least part of the second drive branch. The output terminal of the power modulation module 100 is connected to the second drive branch. The control module 200 is connected to the cleaning control unit 320 and the controlled terminal of the second drive branch, respectively.

[0034] The cleaning control unit 320 can be a button or a touch key. The nozzle assembly uses hot water in the water storage chamber to clean the user, eliminating the need for additional water heating, saving energy and reducing operating costs.

[0035] Specifically, the water temperature sensor 520 detects the water temperature. When the user operates the cleaning control unit 320 and the water temperature is below 37°C, the control module 200 controls the heating element 610 to heat the water. The heating stops when the water temperature reaches 38°C. Since the power supply voltage output by the power modulation module 100 is less than 36V, the nozzle assembly can still spray water for the user during the heating process of the heating element 610, which is safe and reliable.

[0036] In some embodiments of this utility model, the nozzle assembly includes a solenoid valve 620 and a spray gun. The first end of the solenoid valve 620 is connected to the water storage chamber through a pipe, and the tail end of the solenoid valve 620 is connected to the spray gun through a pipe. The solenoid valve 620 is connected to the second drive module 420 to form at least a portion of the second drive branch.

[0037] In some embodiments of this utility model, the second driving module 420 includes a semiconductor switch Q2, a diode D3, a resistor R10, and a resistor R11. The control module 200 is connected to the first end of the resistor R10, and the last end of the resistor R10 is connected to the first end of the resistor R11 and the controlled end of the switch Q2. The input end of the switch Q2 is connected to the solenoid valve 620 to form at least part of the second driving branch. The diode D3 is connected in parallel with the solenoid valve 620, and the output end of the switch Q2 is grounded. Specifically, both the switch Q1 and the switch Q2 can be transistors, MOSFETs, IGBTs, etc.

[0038] In some embodiments of this utility model, the low-pressure heating drive circuit further includes a timing module 700, and the control module 200 is connected to the timing module 700.

[0039] The timing module 700 can be a timer or a crystal oscillator circuit. The timing module 700 provides a timing signal to the control module 200 and starts timing when the user operates the cleaning control component 320. After the solenoid valve 620 is opened and the cleaning time threshold is reached, the control module 200 controls the solenoid valve 620 to close. The cleaning time threshold can be set to 30s, 1min, 2min, etc.

[0040] In some embodiments of this utility model, the low-pressure heating drive circuit further includes an LED indicator module 800, and the control module 200 is connected to the LED indicator module 800 to drive the LED indicator module 800 to be constantly lit, constantly off, or flashing.

[0041] The LED indicator module 800 can use a conventional single-color or multi-color LED light panel. When the user operates the heating control component 310, the LED indicator module 800 switches from the normally off state to the flashing state. The continuous flashing of the light indicates that heating is in progress. Once the heating temperature reaches the temperature threshold, such as 38°C, the LED indicator module 800 is in the normally lit state.

[0042] The toilet device according to a second aspect of the present invention includes the low-pressure heating drive circuit disclosed in any of the above embodiments.

[0043] The toilet device of this utility model uses the low-pressure heating drive circuit disclosed in any of the above embodiments, and is safe and reliable to use.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A low-pressure heating drive circuit, applied to a toilet device, the toilet device having a water storage chamber, a heating element, and a seat plate, wherein a heat exchange channel is provided inside the seat plate, the heat exchange channel communicating with the water storage chamber, and the heating element being located in the water storage chamber or the heat exchange channel, characterized in that, include: A power modulation module, wherein the input terminal of the power modulation module is used to connect to a power supply, and the power modulation module is used to modulate the output voltage of the power supply into a supply voltage, wherein the supply voltage is less than 36V; A first drive module is used to connect to the heating element of the toilet device to form at least part of the first drive branch, and the output terminal of the power modulation module is connected to the first drive branch. A heating control element is disposed in the toilet device; The water detection sensor is located inside the heat exchange channel; The water temperature sensor is located in the water storage chamber or heat exchange channel; The control module is connected to the heating control component, the water detection sensor, the water temperature sensor, and the controlled end of the first drive module.

2. The low-voltage heating drive circuit according to claim 1, characterized in that: The power modulation module includes a first step-down unit and a second step-down unit. The input terminal of the first step-down unit is connected to the power supply. The first step-down unit is used to modulate the output voltage of the power supply to a first supply voltage. The output terminal of the first step-down unit is connected to the first drive branch and the input terminal of the second step-down unit respectively. The second step-down unit is used to modulate the first supply voltage to a second supply voltage. The output terminal of the second step-down unit is connected to the control module. The first supply voltage and the second supply voltage are both less than 36V.

3. The low-voltage heating drive circuit according to claim 1, characterized in that: The first driving module includes a semiconductor switch Q1, a diode D5, a resistor R14, and a resistor R17. The control module is connected to the first end of the resistor R17. The last end of the resistor R17 is connected to the first end of the resistor R14 and the controlled end of the switch Q1. The input end of the switch Q1 is connected to the heating element to form at least part of the first driving branch. The diode D5 is connected in parallel with the heating element. The output end of the switch Q1 is grounded.

4. The low-voltage heating drive circuit according to claim 1, characterized in that, It also includes a cleaning control unit, a nozzle assembly, and a second drive module disposed on the toilet device. The nozzle assembly is connected to the water storage chamber. The second drive module and the nozzle assembly are connected to form at least part of the second drive branch. The output terminal of the power modulation module is connected to the second drive branch. The control module is connected to the cleaning control unit and the controlled terminal of the second drive branch, respectively.

5. A low voltage heating drive circuit according to claim 4, characterised in that, The nozzle assembly includes a solenoid valve and a spray gun. The first end of the solenoid valve is connected to the water storage chamber through a pipe, and the tail end of the solenoid valve is connected to the spray gun through a pipe. The solenoid valve is connected to the second drive module to form at least part of the second drive branch.

6. A low voltage heating drive circuit according to claim 5, characterised in that, The second driving module includes a semiconductor switch Q2, a diode D3, a resistor R10, and a resistor R11. The control module is connected to the first end of the resistor R10, and the last end of the resistor R10 is connected to the first end of the resistor R11 and the controlled end of the switch Q2. The input end of the switch Q2 is connected to the solenoid valve to form at least part of the second driving branch. The diode D3 is connected in parallel with the solenoid valve, and the output end of the switch Q2 is grounded.

7. The low voltage heating drive circuit of claim 4, wherein, It also includes a timing module, and the control module is connected to the timing module.

8. The low voltage heating driver circuit of claim 1, wherein, It also includes an LED indicator module, and the control module is connected to the LED indicator module to drive the LED indicator module to be constantly on, constantly off, or flashing.

9. A toilet device, characterized in that, Includes the low-pressure heating drive circuit as described in any one of claims 1 to 8.

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