An electric toilet bowl provided with a water tank assembly

Abstract

An electric toilet seat with a water tank assembly, comprising a base, a casing, a water tank assembly and a circuit board arranged in an installation cavity formed by the base and the casing, the water tank assembly comprising a water tank with a water inlet and a water outlet and an electric heating tube extending into a water storage cavity of the water tank, characterized in that the water tank assembly further comprises an electrode device arranged in the water storage cavity of the water tank and a metal potential detection piece, the electrode device comprising an electrode rod and a metal potential reference piece, the circuit board being provided with a voltage output module connected with the electrode rod and a potential detection module connected with the potential detection piece, and the potential reference piece being electrically connected with a GND port of the circuit board through a wire. The electric toilet seat with the water tank assembly can reduce the generation of scale and improve the stability and safety of the electric toilet seat through the above design.

Description

Technical Field

[0001] This utility model relates to an electric toilet with a water tank assembly, whose IPC classification number is E03D 1 / 24 (2006.01). Background Technology

[0002] As people's living standards continue to improve, electric toilets are becoming increasingly popular. To ensure a stable and safe supply of hot water to the flushing device, electric toilets typically have a water tank with an electric heating element inside the casing. When the water tank is heated, calcium and magnesium ions in the water react chemically with carbonate ions to form scale. After prolonged use, the scale accumulated on the heating element can corrode it, leading to damage and potential safety hazards such as electrical leakage.

[0003] For relevant terminology and common knowledge, please refer to the "Mechanical Engineering Handbook" and "Electrical Engineering Handbook" published by China Machine Press in 1983 or 1997, as well as the national standard GB / T 23131-2019 "Electric Toilet Seats for Household and Similar Purposes". Utility Model Content

[0004] To address the problems described in the background section, this utility model provides the following technical solution:

[0005] An electric toilet with a water tank assembly includes a base, a housing, a water tank assembly and a circuit board disposed within an installation cavity formed by the base and the housing. The water tank assembly includes a water tank with an inlet and an outlet, and an electric heating tube extending into a water storage cavity of the water tank. The water tank assembly further includes an electrode device and a metal potential detection element disposed within the water storage cavity of the water tank. The electrode device includes an electrode rod and a metal potential reference element. The circuit board has a voltage output module connected to the electrode rod and a potential detection module connected to the potential detection element. The potential reference element is electrically connected to the GND port of the circuit board via a wire.

[0006] This utility model discloses an electric toilet with a water tank assembly. It detects the potential of the water in the tank through a potential detection element and a potential detection module, and controls the voltage output module to output voltage to the electrode device according to the detected potential. This causes acid radical ions to be attracted to the vicinity of the electrode device, while calcium, magnesium and other cations move away from the electrode device and remain in a relatively static state. This reduces the combination of calcium, magnesium and other ions with acid radical ions, prevents the formation of scale, and improves the stability and safety of the electric toilet.

[0007] Furthermore, the potential reference element is tubular, and the electrode rod is disposed inside the cavity of the potential reference element. The electrode device also includes an insulating element disposed inside the cavity of the potential reference element and insulating and isolating the potential reference element from the electrode rod.

[0008] Furthermore, the insulating component is a coating covering the surface of the electrode rod, which is interference-fitted into the cavity of the potential reference component.

[0009] Furthermore, the potential detection element is a sheet of metal installed on the inner wall of the water tank.

[0010] Furthermore, the voltage output module includes a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a transistor Q1, a third diode D3, and a third capacitor C3. One end of the third resistor R3 is connected to the MCU, and the other end is connected to one end of the fourth resistor R4 and the base of the transistor Q1. The other end of the fourth resistor R4 is connected to GND. The emitter of the transistor Q1 is connected to GND. The collector of the transistor Q1 is connected to one end of the fifth resistor R5 and one end of the third diode D3. The other end of the fifth resistor R5 is connected to the power supply. The other end of the third diode D3 is connected to one end of the sixth resistor R6. The other end of the sixth resistor R6 is connected to the electrode rod and one end of the third capacitor C3. The other end of the third capacitor C3 is connected to GND and the potential reference device.

[0011] Furthermore, the potential detection module includes a seventh resistor R7 and a fourth capacitor C4. One end of the seventh resistor R7 is connected to the AD port of the MCU, and the other end is connected to the fourth capacitor C4 and the potential detection device (140) respectively. The other end of the fourth capacitor C4 is connected to GND.

[0012] Furthermore, the electric toilet with a water tank assembly also includes a signal conversion module located upstream of the voltage output module. The signal conversion module includes a first resistor R1, a second resistor R2, a first capacitor C1, a second capacitor C2, a first diode D1, and a second diode D2. One end of the first resistor R1 and the second resistor R2 are connected to the PWM port of the MCU. The other end of the first resistor R1 is connected to the power supply. The other end of the second resistor R2 is connected to one end of the first capacitor C1. The other end of the first capacitor C1 is connected to one end of the first diode D1 and the second diode D2. The other end of the first diode D1 is connected to GND and one end of the second capacitor C2. The other end of the second diode D2 and the second capacitor C2 are connected to the third resistor R3 of the voltage output module, which is connected to the MCU.

[0013] The more specific design and technical effects of this utility model are further explained in conjunction with the accompanying drawings in the specific embodiments. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of an electric toilet with a water tank assembly according to this utility model;

[0015] Figure 2 This is a wiring diagram of the water tank assembly and circuit board of this utility model;

[0016] Figure 3 This is a schematic diagram of the electrode device of this utility model;

[0017] Figure 4 This is a schematic diagram of the potential detection element of this utility model;

[0018] Figure 5 This is an electrical schematic diagram of the circuit board, electrode device, and potential detection element of this utility model.

[0019] in:

[0020] 1-Water tank, 10-Base, 20-Casing, 30-Seat ring, 40-Spray washing device, 100-Water tank assembly, 110-Water tank, 120-Heating element, 130-Electrode device, 131-Electrode rod, 132-Potential reference component, 133-Insulating component, 140-Potential detection component, 200-Circuit board, 210-Voltage output module, 220-Potential detection module, 230-Conversion module Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] The MCU of this invention is a single-chip microcomputer, which appropriately reduces the frequency and specifications of the central processing unit and integrates peripheral interfaces such as memory, counter, USB, A / D converter, UART, PLC, DMA, and even LCD driver circuitry onto a single chip, forming a chip-level computer. It allows for different combinations of control for different applications. The GND port refers to the ground terminal; the PWM terminal is an electrical signal output by the MCU, which adjusts the output signal by adjusting the pulse width; the AD terminal is an electrical signal of the MCU, which converts analog signals into digital signals. See [link to documentation]. Figure 1 This utility model discloses an electric toilet with a water tank assembly. The electric toilet includes a base 10, a housing 20, a seat ring 30, a water tank assembly 100 (not shown), a circuit board 200 (not shown), and a water spray assembly 40 disposed within the space enclosed by the base 10 and the housing 20. See [link to relevant documentation]. Figure 2 , Figure 3 and Figure 5The water tank assembly 100 includes a water tank 110 with an inlet 111 and an outlet 112, an electric heating tube 120 extending into the water storage chamber 1 of the water tank, an electrode device 130 disposed in the water storage chamber 1 of the water tank, and a metal potential detection element 140. The electrode device 130 includes an electrode rod 131 and a metal potential reference element 132. The circuit board 200 includes a voltage output module 210 for outputting voltage and a potential detection module 220 for detecting voltage. One output port of the potential detection module 220 is connected to the potential detection element 140, and one output port of the voltage output module 210 is connected to the electrode rod 131. The potential reference element 132 is connected to the GND port of the circuit board 200 via a wire. The potential reference element 132 and the potential detection element 140 in this invention are preferably made of copper. Of course, as in other embodiments, the potential reference element and the potential detection element can also be made of materials such as silver or nickel.

[0023] This utility model discloses an electric toilet with a water tank assembly. It detects the potential of the water in the tank through a potential detection element and a potential detection module, and controls the voltage output module to output voltage to the electrode device according to the detected potential. This causes carbonate ions to be attracted to the vicinity of the electrode device, while calcium, magnesium and other cations move away from the electrode device and remain in a relatively static state. This reduces the combination of calcium, magnesium and other ions with acid radical ions, prevents the formation of scale, and improves the stability and safety of the electric toilet.

[0024] See Figure 2 and Figure 3 Preferably, the electrode device 130 further includes an insulating member 133, wherein the potential reference member 132 is tubular, the electrode rod 131 is inserted into the cavity of the potential reference member 132, and the insulating member 133 is radially disposed between the electrode rod 131 and the potential reference member 132, insulating and isolating them. This design integrates the electrode rod 131 and the potential reference member 132 into a single unit, resulting in a compact structure and preventing scale buildup on the electrode rod 131, thus improving the stability of the electrode device. Further, for ease of manufacturing and installation, the insulating member 133 is a coating, such as epoxy resin paint, covering the surface of the electrode rod 131, and the electrode rod 131 is interference-fitted into the potential reference member 132. Of course, as in other embodiments, the insulating member 133 may be insulating adhesive injected into the cavity of the potential reference member 132 or a heat-shrinkable tube sleeved on the radially outer surface of the electrode rod 131.

[0025] See Figure 4 In order to detect the potential of the water tank over a wide range and improve the accuracy of detection, the potential detection element 140 in this embodiment is a sheet of metal, which is installed on the inner wall of the water tank 110. Preferably, the potential detection element 140 is installed in close contact with the bottom inner wall membrane of the water tank 110.

[0026] See Figure 2 and Figure 5 The voltage output module 210 of this utility model includes a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a transistor Q1, a third diode D3, and a third capacitor C3. One end of the third resistor R3 is connected to the MCU, and the other end is connected to one end of the fourth resistor R4 and the base of the transistor Q1. The other end of the fourth resistor R4 is connected to GND. The emitter of the transistor Q1 is connected to GND, and its collector is connected to one end of the fifth resistor R5 and one end of the third diode D3. The other end of the fifth resistor R5 is connected to the power supply (preferably +12V). The other end of the third diode D3 is connected to one end of the sixth resistor R6. The other end of the sixth resistor R6 is connected to the electrode rod 131 and one end of the third capacitor C3. The other end of the third capacitor C3 is connected to GND and the potential reference 132. The voltage output module designed in this way can input a more stable voltage to the electrode rod, and can prevent the current from flowing back through the electrode rod and damaging the circuit board when the voltage of the water in the water tank is too high. This improves the output accuracy while also extending the life of the circuit board.

[0027] See Figure 5 In a preferred embodiment, the potential detection module 220 of this utility model includes a seventh resistor R7 and a fourth capacitor C4. One end of the seventh resistor R7 is connected to the AD port of the MCU, and the other end is connected to the fourth capacitor C4 and the potential detection device. The other end of the fourth capacitor C4 is connected to GND. This design can prevent the voltage in the water tank from flowing into the circuit board through the potential detection device and damaging it when the voltage is too high, thus improving the stability of the electric toilet.

[0028] Furthermore, see Figure 5 The electric toilet with a water tank assembly of this utility model also includes a signal conversion module 230 located upstream of the voltage output module 210. This signal conversion module 230 includes a first resistor R1, a second resistor R2, a first capacitor C1, a second capacitor C2, a first diode D1, and a second diode D2. One end of the first resistor R1 and the second resistor R2 are connected together and then connected to the PWM port of the MCU. The other end of the first resistor R1 is connected to a power supply (preferably +5V). The other end of the second resistor R2 is connected to one end of the first capacitor C1. The other end of the first capacitor C1 is connected to one end of both the first diode D1 and the second diode D2. The other end of the first diode D1 is connected to GND and one end of the second capacitor C2. The other end of the second diode D2 and the second capacitor C2 are connected together and then connected to the third resistor R3 of the voltage output module, which is connected to the MCU. This design allows the MCU to pass a preset signal, preventing abnormal MCU output from damaging the circuit board.

[0029] The working principle of this electric toilet with a water tank assembly is as follows: When the electric toilet is powered on, the MCU detects the potential of the water in the tank through a potential reference component and a potential detection module. If the preset optimal protection potential (e.g., 1V) is not reached, the MCU will control the voltage output module to output voltage to the electrode rod, causing the ions inside the tank to move. Until the potential detection module detects that the potential inside the tank has reached the protection potential, the MCU controls the voltage output module to save the current output voltage. At this time, due to the action of the electrode rod, carbonate ions will be attracted to the vicinity of the electrode rod, while electrons of calcium, magnesium, etc. will move away from the electrode rod, reducing the combination of calcium and magnesium electrons with carbonate ions, thereby achieving the purpose of inhibiting scale formation.

Claims

1. An electric toilet seat provided with a water tank assembly, comprising a base (10), a housing (20), a water tank assembly (100) and a circuit board (200) arranged in an installation cavity formed by the base (10) and the housing (20), the water tank assembly (100) comprising a water tank (110) with a water inlet and a water outlet and an electric heating tube (120) extending into a water storage cavity of the water tank, characterized in that, The water tank assembly (100) further comprises an electrode device (130) and a metal potential detection piece (140) arranged in the water storage cavity of the water tank, the electrode device (130) comprises an electrode rod (131) and a metal potential reference piece (132), the circuit board (200) is provided with a voltage output module (210) connected with the electrode rod (131) and a potential detection module (220) connected with the potential detection piece (140), and the potential reference piece (132) is electrically connected with the GND port of the circuit board (200) through a wire.

2. The electric toilet provided with the water tank assembly according to claim 1, characterized in that, The potential reference piece (132) is tubular, the electrode rod (131) is arranged in the lumen of the potential reference piece (132), and the electrode device (130) further comprises an insulating piece (133) arranged in the lumen of the potential reference piece (132) and insulating the potential reference piece (132) from the electrode rod (131).

3. The electric toilet provided with the water tank assembly according to claim 2, characterized in that, The insulating piece (133) is a coating covering the surface of the electrode rod (131), and the electrode rod (131) is inserted into the lumen of the potential reference piece (132) in an interference fit.

4. The electric toilet provided with a water tank assembly according to claim 1, wherein The potential detection piece (140) is a sheet-shaped metal mounted on the inner wall of the water tank (110).

5. The electric toilet provided with a water tank assembly according to claim 1, wherein The voltage output module (210) comprises a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a triode Q1, a third diode D3 and a third capacitor C3, one end of the third resistor R3 is connected to an MCU, the other end is connected with one end of the fourth resistor R4 and the base of the triode Q1, the other end of the fourth resistor R4 is connected with GND, the emitter of the triode Q1 is connected with GND, the collector of the triode Q1 is connected with one end of the fifth resistor R5 and one end of the third diode D3, the other end of the fifth resistor R5 is connected with a power supply, the other end of the third diode D3 is connected with one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected with the electrode rod and one end of the third capacitor C3, and the other end of the third capacitor C3 is connected with GND and the potential reference piece.

6. The electric toilet provided with the water tank assembly according to claim 1 or 5, characterized in that, The potential detection module (220) comprises a seventh resistor R7 and a fourth capacitor C4, one end of the seventh resistor R7 is connected to an AD port of an MCU, the other end is connected with the fourth capacitor C4 and the potential detection piece (140), and the other end of the fourth capacitor C4 is connected with GND.

7. The electric toilet provided with the water tank assembly according to claim 5, wherein Also include the signal conversion module (230) located upstream of the voltage output module (210), the signal conversion module (230) includes the first resistance R1, the second resistance R2, the first capacitor C1, the second capacitor C2, the first diode D1 and the second diode D2, the first resistance R1 and the second resistance R2 are connected to the PWM port of MCU, the other end of the first resistance R1 is connected to the power supply, the other end of the second resistance R2 is connected to one end of the first capacitor C1, the other end of the first capacitor C1 is connected to one end of the first diode D1 and the second diode D2 respectively, the other end of the first diode D1 is connected to GND and one end of the second capacitor C2 respectively, the other end of the second diode D2 and the second capacitor C2 is connected to one end of the third resistance R3 of the voltage output module which is connected to the MCU.

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