Electric kettle and its scale control circuit

Abstract

The application relates to an electric kettle and a scale control circuit thereof, which comprises a kettle body, an electronic rod, a first electric connection seat, an electrode overturning driving circuit and a main control unit. The kettle body is provided with a conductive sheet, the conductive sheet is electrically connected with one of first and second electrodes of the first connection seat, the other of the first and second electrodes is electrically connected with the electronic rod arranged in the kettle body, the electrode overturning driving circuit comprises a first driving circuit and a second driving circuit, one end of the first driving circuit and the second driving circuit is respectively coupled and electrically connected with one I / O port of the main control unit, and the other end is respectively coupled and electrically connected with the first and second electrodes. The first control signal and the second control signal which are alternately overturned in a preset time interval are output by the main control unit, corresponding positive and negative electric fields are formed between the electronic rod and the kettle body, and water is electrolyzed and scale generation in the water boiling process is inhibited or eliminated through the alternately generated positive and negative electric fields.

Description

Technical Field

[0001] This application relates to the field of electric kettle technology, and in particular to an electric kettle and its anti-scaling control circuit. Background Technology

[0002] After prolonged use, limescale will build up on the inner wall of an electric kettle. In areas with poor water quality, even more limescale will be produced when boiling water. Therefore, it is necessary to clean the limescale in an electric kettle regularly. If it is not cleaned for a long time, a thick layer of limescale will form inside the kettle, resulting in low water heating efficiency and slow boiling.

[0003] Among the relevant technologies, methods for removing limescale include: first, using chemical methods such as boiling water with vinegar or baking soda in the kettle, boiling eggs, using potato peels, and using limescale removers; second, using a scraping device to physically break up and scrape off the limescale. Both physical scraping and chemical methods remove limescale by eliminating existing limescale. However, the limescale removal process can easily damage the kettle body, affecting its lifespan. In addition, after limescale removal, there may be residues of limescale remover or impurities, affecting the quality of the boiled water.

[0004] In related technologies, the formation of limescale during the use of electric kettles is suppressed or eliminated by swaying or shaking. However, the limescale removal effect is not good and boiling water is prone to overflow, which poses a safety risk.

[0005] Currently, no effective solution has been proposed to address the issues of poor limescale removal and safety risks associated with electric kettles during use. Utility Model Content

[0006] In view of this, it is necessary to provide an electric kettle and its anti-scaling control circuit to at least solve the problems of poor scale removal effect and safety risks in the use of electric kettles in related technologies.

[0007] In a first aspect, this application provides the following technical solution: a scale-reducing control circuit for an electric kettle, comprising a kettle body, an electronic rod, a first electrical connector, an electrode flipping drive circuit, and a main control unit. The kettle body is provided with a conductive sheet, which is electrically connected to one of a first electrode and a second electrode of the first electrical connector. The other of the first electrode and the second electrode is electrically connected to the electronic rod disposed within the kettle body. The electrode flipping drive circuit includes a first drive circuit and a second drive circuit. One end of each of the first and second drive circuits is electrically coupled to an I / O port of the main control unit, and the other end is electrically coupled to the first electrode and the second electrode, respectively. The main control unit is configured to output a first control signal and a second control signal along the two I / O ports respectively, wherein the levels of the first control signal and the second control signal are set to switch and flip within a preset time interval; the first driving circuit is configured to convert the corresponding first control signal into a first driving signal; the second driving circuit is configured to convert the corresponding second control signal into a second driving signal; the electron rod and the conductive sheet are configured to form an alternating positive electric field and a negative electric field between the electron rod and the kettle body based on the received first driving signal and the second driving signal, so as to electrolyze the water and inhibit the formation of scale through the positive electric field and the negative electric field.

[0008] In one embodiment, both the first driving circuit and the second driving circuit include a comparator. The negative input terminal of the comparator is electrically connected to a reference circuit. The positive input terminal of the comparator corresponding to the first driving circuit is electrically connected to one of the I / O ports. The output terminal of the comparator corresponding to the first driving circuit is connected to the first electrode in series with a first coupling resistor. The positive input terminal of the comparator corresponding to the second driving circuit is electrically connected to another I / O port. The output terminal of the comparator corresponding to the second driving circuit is connected to the second electrode in series with a second coupling resistor.

[0009] The comparator corresponding to the first driving circuit is used to output the first driving signal of the corresponding level along the output terminal of the comparator corresponding to the first driving circuit according to the level of the received first control signal and the reference voltage provided by the reference circuit.

[0010] The comparator corresponding to the second driving circuit is used to output a second driving signal of a corresponding level along the output terminal of the comparator corresponding to the second driving circuit according to the level of the received second control signal and the reference voltage provided by the reference circuit.

[0011] When the level of the first driving signal is higher than the level of the second driving signal, the corresponding positive electric field between the electronic rod and the kettle body is generated; when the level of the first driving signal is lower than the level of the second driving signal, the corresponding negative electric field between the electronic rod and the kettle body is generated.

[0012] In one embodiment, the comparator includes an operational amplifier comparator for an LM8 signal, and the value of the first coupling resistor is less than the value of the second coupling resistor.

[0013] In one embodiment, the reference circuit includes a first resistor and a second resistor. One end of the first resistor is electrically connected to a first power supply, a first capacitor, and a second capacitor, respectively. The other end of the first resistor is electrically connected to the second resistor and the negative input terminal of the corresponding comparator, respectively. The other ends of the second resistor, the first capacitor, and the second capacitor are all grounded. The first capacitor and the second capacitor form a filter unit, and the first resistor and the second resistor form a voltage divider unit, which divides the voltage output from the first power supply to generate the corresponding reference voltage.

[0014] In one embodiment, the electrical connection point between the second coupling resistor and the second electrode is also electrically connected to ground via a third resistor.

[0015] In one embodiment, the electrical connection point between the second coupling resistor and the second electrode is also electrically coupled to the digital sampling port of the main control unit through a π-type RC filter circuit composed of a third resistor, a third capacitor, and a fourth capacitor.

[0016] In one embodiment, the electrical connection point between the first coupling resistor and the first electrode is also electrically connected to a first bidirectional Zener diode, and the electrical connection point between the second coupling resistor and the second electrode is also electrically connected to a second bidirectional Zener diode, wherein both the first bidirectional Zener diode and the second bidirectional Zener diode include a GBLC05C type protection diode.

[0017] In one embodiment, the main control unit includes one of the following: a microcontroller (MCU), a digital signal processor (DSP), or a programmable logic device (FPGA).

[0018] Secondly, this application provides a technical solution as follows: an electric kettle, including a descaling control circuit, wherein the descaling control circuit includes the anti-scaling control circuit described in the first aspect.

[0019] Compared with related technologies, this embodiment provides an electric kettle and its scale-removing control circuit. The control circuit includes a kettle body, an electron rod, a first electrical connector, an electrode reversal drive circuit, and a main control unit. The kettle body is provided with a conductive sheet, which is electrically connected to one of the first electrode and the second electrode of the first electrical connector. The other of the first electrode and the second electrode is electrically connected to the electron rod installed in the kettle body. The electrode reversal drive circuit includes a first drive circuit and a second drive circuit. One end of the first drive circuit and the second drive circuit are respectively coupled and electrically connected to one I / O port of the main control unit, and the other end is respectively coupled and electrically connected to the first electrode and the second electrode. The main control unit outputs a first control signal and a second control signal that alternately reverse within a preset time interval, so that the level of the electron rod and the conductive sheet reverses from high to low within the preset time interval, and forms corresponding positive and negative electric fields between the electron rod and the kettle body. Through the alternately generated positive and negative electric fields, water is electrolyzed and scale formation is inhibited or eliminated during the boiling process, solving the problem of poor scale removal effect and safety risks in electric kettles during use in related technologies.

[0020] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A structural block diagram of a scale-reducing control circuit provided in an embodiment of this application;

[0024] Figure 2 A topology diagram is provided for a preferred embodiment of this application. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] The electric kettle and control circuit of this application will be described below with reference to the accompanying drawings in the embodiments of this application and through specific embodiments.

[0027] Figure 1 A structural block diagram of a scale-reducing control circuit provided in an embodiment of this application; Figure 2 This is a topology diagram provided for a preferred embodiment of the present application. The illustrated anti-scaling control circuit is applied to an electric kettle to inhibit or eliminate scale formation during the use of the kettle by electrolyzing water.

[0028] Please see Figures 1 to 2 This application discloses a scale-reducing control circuit for an electric kettle. The circuit includes a kettle body 100, an electron rod 200, a first electrical connector 300, an electrode flipping drive circuit 400, and a main control unit 500. A conductive sheet 11 is provided on the kettle body 100. The conductive sheet 11 is electrically connected to one of the first electrode 31 and the second electrode 32 of the first electrical connector 300. The other of the first electrode 31 and the second electrode 32 is electrically connected to the electron rod 200 installed inside the kettle body 100. The electrode flipping drive circuit 400 includes a first drive circuit 41 and a second drive circuit 42. One end of the first drive circuit 41 and the second drive circuit 42 are respectively coupled and electrically connected to an I / O port of the main control unit 500, and the other end is respectively coupled and electrically connected to the first electrode 31 and the second electrode 32.

[0029] The main control unit 500 is used to output a first control signal and a second control signal along two I / O ports respectively, wherein the levels of the first control signal and the second control signal are set to switch and toggle within a preset time interval.

[0030] In this embodiment, the main control unit 500 can be a microcontroller (MCU), a digital signal processor (DSP), or a programmable logic device (FPGA). In some optional embodiments, the main control unit 500 is preferably an MCU of one of the following: R7F0C908B2 microprocessor, STC15F204 microcontroller, AT89S52 microcontroller, or EN8F677E microprocessor.

[0031] In this embodiment, the main control unit 500 synchronously outputs a first control signal and a second control signal. However, each time the first control signal and the second control signal are output synchronously, their levels are set to high (represented by "1") and low (represented by "0"), respectively, and they are flipped or reversed within a set time interval. For example, when the first control signal and the second control signal were output last time, the level of the first control signal was high and the level of the second control signal was low. When the first control signal and the second control signal are output next time, the level of the first control signal is flipped to low and the level of the second control signal is flipped to high. In this embodiment, the first control signal and the second control signal are flipped once within a preset time interval, and the corresponding time interval is set to 1 second.

[0032] The first driving circuit 41 is used to convert the corresponding first control signal into a first driving signal.

[0033] The second driving circuit 42 is used to convert the corresponding second control signal into a second driving signal.

[0034] In this embodiment, the first driving circuit 41 is used to convert the first control signal into a first driving signal with the same level state (high level or low level); the second driving circuit 42 is used to convert the second control signal into a second driving signal with the same level state (high level or low level). It should be noted that in this embodiment, a high level is represented by "1", but it does not mean that its voltage is 1V. Rather, it is a level higher than a certain voltage, such as a level greater than 4V, which is often represented by +5V. A low level is represented by "0", but it does not mean that the voltage of the corresponding signal is 0V. Rather, it means that the level of the corresponding signal is lower than the voltage value corresponding to the set low level. For example, a signal level less than 1V is represented as a low level.

[0035] In this embodiment, the first control signal and the second control signal are converted into corresponding first driving signal and second driving signal by the first driving circuit 41 and the second driving circuit 42, respectively, thereby improving the driving capability of the first driving signal and the second driving signal, enhancing the electric field strength of the electric field formed between the electron rod 200 and the conductive sheet 11, and thus enhancing the effect of suppressing or eliminating scale. At the same time, the driving capability of the corresponding control signal is enhanced by the corresponding driving circuit, avoiding the direct loading of the corresponding control signal onto the electron rod 200 and the conductive sheet 11 due to insufficient driving capability of the I / O port corresponding to the main control unit 500, which would result in a weak electric field strength of the generated electric field.

[0036] The electron rod 200 and the conductive sheet 11 are used to form an alternating positive and negative electric field between the electron rod 200 and the kettle body 100 based on the received first and second driving signals, so as to electrolyze the water and inhibit the formation of scale through the positive and negative electric fields.

[0037] In this embodiment, the first electrical connector 300 serves as the connection terminal for the electrode flipping drive circuit 400 to electrically connect with the electron rod 200 and the conductive sheet 11. The first electrode 31 and the second electrode 32 of the first electrical connector 300 can be connected to either the electron rod 200 or the conductive sheet 11. Therefore, the first electrode 31 and the second electrode 32 are not limited to being fixedly connected to either the electron rod 200 or the conductive sheet 11. The specific connection of the first electrode 31 and the second electrode 32 to either the electron rod 200 or the conductive sheet 11 depends on the specific connection between the two electrodes. The connection between the electron rod 200 and the conductive sheet 11 and the first electrical connector 300 is determined by which connector they are connected to. In this embodiment, the electron rod 200 and the conductive sheet 11 are connected to another connector. When this connector is connected to the first electrical connector 300 (either in the correct or reverse direction), the connection between the electron rod 200 and the conductive sheet 11 is determined. For example, when the first electrical connector 300 is in the correct direction, the first electrode 31 is electrically connected to the electron rod 200, and the second electrode 32 is electrically connected to the conductive sheet 11.

[0038] In this embodiment, after a corresponding electric field is formed between the electron rod 200 and the kettle body 100, the generation of the electric field excites the movement of corresponding ions in the water. The ions in the water continuously vibrate, collide, and rub. These vibration, collision, and friction processes prevent scale from depositing during the boiling process and decompose the already deposited scale to a certain extent, thereby eliminating the scale that has been generated. Then, by cyclically alternating positive and negative electric fields, the ions in the water reciprocate, thereby strengthening the corresponding vibration, collision, and friction effects, preventing the corresponding scale molecules from depositing and decomposing the already generated scale. In this way, the effects of removing scale and inhibiting scale formation are achieved.

[0039] In the aforementioned control circuit, the main control unit 500 outputs a first control signal and a second control signal that alternately flip within a preset time interval, so that the levels of the electron rod 200 and the conductive sheet 11 flip high and low within the preset time interval, thereby forming corresponding positive and negative electric fields between the electron rod 200 and the kettle body 100. Through the alternately generated positive and negative electric fields, water is electrolyzed, and the scale deposited in the kettle body 100 is eliminated during the water electrolysis process, and / or the formation of scale is inhibited during the boiling process, thus solving the problem of poor scale removal effect and safety risks in electric kettles during use in related technologies.

[0040] It should be noted that the scale control circuit in this embodiment of the application forms alternating positive and negative electric fields in the water between the electron rod 200 and the conductive sheet 11. The electrolysis of the water by these positive and negative electric fields inhibits scale formation during boiling and the use of the electric kettle. Simultaneously, the alternating reversal of the positive and negative electric fields creates an electric field similar to that generated by a high-frequency electronic signal, thereby stimulating the movement of ions in the water and enhancing the vibration, collision, and friction effects of the ions, thus inhibiting scale formation. In this embodiment, the scale control circuit primarily achieves the beneficial effect of inhibiting scale formation. Simultaneously, it also slowly eliminates or reduces existing scale deposits, and through repeated elimination, ultimately achieves the effect of eliminating scale completely.

[0041] To enhance the driving capability of the corresponding control signals, refer to Figure 1 and Figure 2 In one embodiment, both the first driving circuit 41 and the second driving circuit 42 include a comparator (see reference). Figure 2 The negative input terminals of the comparators (U1A and U1B in the reference circuit 43) are electrically connected to the reference circuit 43. The comparator corresponding to the first drive circuit 41 (reference circuit 43) is also connected to the reference circuit 43. Figure 2 The positive input terminal of U1A is electrically connected to an I / O port (see reference). Figure 2 The comparator corresponding to the first driving circuit 41 (reference I01) is... Figure 2 The output terminal of U1A is connected in series with the first coupling resistor R37 and electrically connected to the first electrode 31. The comparator corresponding to the second driving circuit 42 (reference) Figure 2 The positive input terminal of U1B is electrically connected to another I / O port (see reference). Figure 2 The comparator corresponding to the second drive circuit 42 (reference IO2) Figure 2 The output terminal of U1B is connected in series with the second coupling resistor R36 and electrically connected to the second electrode 32.

[0042] In this embodiment, the comparator includes, but is not limited to, an operational amplifier comparator of type LM358. The resistance value of the first coupling resistor R37 is less than the resistance value of the second coupling resistor R36. For example, the first coupling resistor R37 is a 1K resistor and the second coupling resistor R36 is a 10M resistor.

[0043] In this embodiment, reference Figure 2The reference circuit 43 includes a first resistor R1 and a second resistor R2. One end of the first resistor R1 is electrically connected to the first power supply (corresponding to the +5V output power supply), the first capacitor C1, and the second capacitor C2. The other end of the first resistor R1 is electrically connected to the second resistor R2 and the negative input terminal of the corresponding comparator (two comparators). The other ends of the second resistor R2, the first capacitor C1, and the second capacitor C2 are all grounded. The first capacitor C1 and the second capacitor C2 form a filter unit, and the first resistor R1 and the second resistor R2 form a voltage divider unit, which divides the voltage output from the first power supply to generate the corresponding reference voltage.

[0044] In this embodiment, the first resistor R1 and the second resistor R2 are resistors with the same resistance value. Therefore, after voltage division, the generated reference voltage is half of the voltage output by the first power supply, for example, 2.5V.

[0045] The comparator U1A corresponding to the first driving circuit 41 is used to output a first driving signal of a corresponding level along the output terminal of the comparator U1A corresponding to the first driving circuit 41 according to the level of the received first control signal and the reference voltage provided by the reference circuit 43.

[0046] In this embodiment, the reference circuit 43 provides a reference voltage with a preset level (e.g., 2.5V) as a reference voltage. The comparator U1A compares the level of the first control signal with the reference voltage. When the level of the first control signal is high, the level of the first control signal is greater than the reference voltage, and the comparator U1A will output a high-level first drive signal. When the level of the first control signal is reversed to low, the level of the first control signal is less than the reference voltage, and the comparator U1A will output a low-level first drive signal.

[0047] The comparator U1B corresponding to the second driving circuit 42 is used to output a second driving signal of a corresponding level along the output terminal of the comparator corresponding to the second driving circuit 42 according to the level of the received second control signal and the reference voltage provided by the reference circuit 43.

[0048] In this embodiment, comparator U1B receives the same reference voltage as comparator U1A. Comparator U1B compares the level of the second control signal with the reference voltage. When the level of the second control signal is high, the level of the second control signal is greater than the reference voltage, and comparator U1B outputs a high-level second drive signal. When the level of the second control signal is reversed to low, the level of the second control signal is less than the reference voltage, and comparator U1B outputs a low-level second drive signal.

[0049] When the level of the first driving signal is higher than the level of the second driving signal, there is a positive electric field between the electronic rod 200 and the pot body 100; when the level of the first driving signal is lower than the level of the second driving signal, there is a negative electric field between the electronic rod 200 and the pot body 100.

[0050] To prevent power frequency interference to ground caused by reverse connection of electron rod 200 and conductive plate 11, which could affect the operation of the control circuit, refer to... Figure 2 In some alternative embodiments, the electrical connection point between the second coupling resistor R36 and the second electrode 32 is also electrically connected to ground via a third resistor R38 (using a 1K resistor).

[0051] It is understandable that by connecting the third resistor R38, when the electron rod 200 is connected to the second electrode 32 and the conductive sheet 11 is connected to the first electrode 31, when the first drive signal and the second drive signal are reversed, the third resistor R38 isolates the electron rod 200 from the ground and absorbs the generated power frequency interference, ensuring that the overall anti-scaling control circuit works normally.

[0052] To achieve monitoring of the first and second drive signals, refer to Figure 2 In one embodiment, the electrical connection point between the second coupling resistor R36 and the second electrode 32 is also connected to the digital sampling port of the main control unit 500 (reference) through a π-type RC filter circuit composed of a third resistor R39, a third capacitor C13, and a fourth capacitor C14. Figure 2 The ADC in the middle is coupled to the electrical connection.

[0053] In this embodiment, the signal at the electrical connection point between the second coupling resistor R36 and the second electrode 32 is filtered by a π-type RC filter circuit so that the main control unit 500 can accurately detect the voltage and level on the second electrode 32, thereby accurately controlling the output of the corresponding first control signal and second control signal along the two I / O ports within a set time interval, so that the electronic rod 200 and the pot body 100 can generate a corresponding positive electric field or negative electric field.

[0054] In one embodiment, the electrical connection point between the first coupling resistor R37 and the first electrode 31 is also electrically connected to the first bidirectional Zener diode VR1, and the electrical connection point between the second coupling resistor R36 and the second electrode 32 is also electrically connected to the second bidirectional Zener diode VR2. The first bidirectional Zener diode VR1 and the second bidirectional Zener diode VR2 both include a GBLC05C type protection diode.

[0055] This application also provides an electric kettle, including a scale-reducing control circuit, which includes the scale-reducing control circuit described in the above embodiments.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive elements that are not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0057] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A scale-reducing control circuit for use in an electric kettle, characterized in that, The device includes a kettle body (100), an electron rod (200), a first electrical connector (300), an electrode flipping drive circuit (400), and a main control unit (500). The kettle body (100) has a conductive sheet (11) electrically connected to one of the first electrode (31) and the second electrode (32) of the first electrical connector (300). The other of the first electrode (31) and the second electrode (32) is electrically connected to the electron rod (200) installed inside the kettle body (100). The electrode flipping drive circuit (400) includes a first drive circuit (41) and a second drive circuit (42). One end of the first drive circuit (41) and the second drive circuit (42) are respectively coupled and electrically connected to an I / O port of the main control unit (500), and the other end is respectively coupled and electrically connected to the first electrode (31) and the second electrode (32). The main control unit (500) is used to output a first control signal and a second control signal along the two I / O ports respectively, wherein the levels of the first control signal and the second control signal are set to switch and toggle within a preset time interval; The first driving circuit (41) is used to convert the corresponding first control signal into a first driving signal; The second driving circuit (42) is used to convert the corresponding second control signal into a second driving signal; The electron rod (200) and the conductive sheet (11) are used to form an alternating positive and negative electric field between the electron rod (200) and the kettle body (100) based on the received first driving signal and second driving signal, so as to electrolyze water and inhibit scale formation through the positive and negative electric fields.

2. The anti-scaling control circuit according to claim 1, characterized in that, Both the first driving circuit (41) and the second driving circuit (42) include a comparator. The negative input terminal of the comparator is electrically connected to the reference circuit (43). The positive input terminal of the comparator corresponding to the first driving circuit (41) is electrically connected to one of the I / O ports. The output terminal of the comparator corresponding to the first driving circuit (41) is connected in series with a first coupling resistor and electrically connected to the first electrode (31). The positive input terminal of the comparator corresponding to the second driving circuit (42) is electrically connected to another I / O port. The output terminal of the comparator corresponding to the second driving circuit (42) is connected in series with a second coupling resistor and electrically connected to the second electrode (32). The comparator corresponding to the first driving circuit (41) is used to output the first driving signal of the corresponding level along the output terminal of the comparator corresponding to the first driving circuit (41) according to the level of the first control signal received and the reference voltage provided by the reference circuit (43). The comparator corresponding to the second driving circuit (42) is used to output a second driving signal of a corresponding level along the output terminal of the comparator corresponding to the second driving circuit (42) according to the level of the second control signal received and the reference voltage provided by the reference circuit (43); When the level of the first driving signal is higher than the level of the second driving signal, the corresponding positive electric field between the electronic rod (200) and the pot body (100) is generated; when the level of the first driving signal is lower than the level of the second driving signal, the corresponding negative electric field between the electronic rod (200) and the pot body (100) is generated.

3. The anti-scaling control circuit according to claim 2, characterized in that, The comparator includes an LM358 operational amplifier comparator, and the resistance value of the first coupling resistor is less than the resistance value of the second coupling resistor.

4. The anti-scaling control circuit according to claim 2, characterized in that, The reference circuit (43) includes a first resistor and a second resistor. One end of the first resistor is electrically connected to a first power supply, a first capacitor, and a second capacitor, respectively. The other end of the first resistor is electrically connected to the second resistor and the negative input terminal of the corresponding comparator, respectively. The other ends of the second resistor, the first capacitor, and the second capacitor are all grounded. The first capacitor and the second capacitor form a filter unit, and the first resistor and the second resistor form a voltage divider unit. The voltage output from the first power supply is divided to generate the corresponding reference voltage.

5. The anti-scaling control circuit according to claim 2, characterized in that, The electrical connection point between the second coupling resistor and the second electrode (32) is also electrically connected to ground via a third resistor.

6. The anti-scaling control circuit according to claim 5, characterized in that, The electrical connection point between the second coupling resistor and the second electrode (32) is also electrically coupled to the digital sampling port of the main control unit (500) through a π-type RC filter circuit composed of a third resistor, a third capacitor and a fourth capacitor.

7. The anti-scaling control circuit according to claim 2, characterized in that, The first coupling resistor is electrically connected to the first electrode (31) at the electrical connection point, and the second coupling resistor is electrically connected to the second electrode (32) at the electrical connection point, and the second bidirectional Zener diode is electrically connected to the second bidirectional Zener diode. Both the first bidirectional Zener diode and the second bidirectional Zener diode include a protection diode of type GBLC05C.

8. The anti-scaling control circuit according to any one of claims 1 to 7, characterized in that, The main control unit (500) includes one of the following: a microcontroller (MCU), a digital signal processor (DSP), or a programmable logic device (FPGA).

9. An electric kettle, characterized in that, It includes a descaling control circuit, wherein the descaling control circuit includes the antiscaling control circuit according to any one of claims 1 to 8.

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