Circuit system of appliance heated by induction cooker

Abstract

The utility model discloses a circuit system of an appliance heated by an induction cooker, which comprises an induction cooker circuit module and a heated appliance circuit module, the induction cooker circuit module comprises a control unit, a heating wire coil and a signal receiving module, and the signal receiving module comprises at least one signal receiving unit. The heated appliance circuit module comprises an induction coil, an induction module and a signal sending module, the induction coil and the heating wire coil are oppositely arranged, the signal sending module comprises at least one signal sending unit correspondingly configured with the signal receiving unit, the induction module comprises at least one induction unit, and when the induction module is triggered, the signal sending unit sends signals to the induction module; after the signal sending module sends a set signal and the signal receiving module receives the set signal, the control unit controls the heating wire coil to be powered off, so that control over the working state of the induction cooker is achieved, due to the fact that the induction module is arranged on the heated appliance, the induction cooker can be controlled according to the working states such as temperature, pressure and steam of the heated appliance, and control is accurate and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of induction cooker application, especially to a circuit system of a utensil heated by an induction cooker. BACKGROUND

[0002] The utensil heated by the induction cooker, such as a pot and a kettle, can effectively realize indirect heating of the corresponding utensil and can realize water and electricity separation, but the control induction element of the current induction cooker is generally only arranged on the disc surface of the induction cooker, and the induction cooker cannot be controlled according to the actual working condition of the heated device, such as temperature control. The temperature sensor of the induction cooker is arranged on the disc surface, and the temperature control can generally be realized only through the disc surface temperature. Since the disc surface temperature of the induction cooker is greatly different from the temperature in the utensil, the induction cooker cannot be accurately controlled through the temperature in the utensil, and therefore the use is very inconvenient, and even safety accidents may occur. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art. To this end, the utility model provides a circuit system of a utensil heated by an induction cooker, which can control the induction cooker according to the working state of the heated utensil.

[0004] The circuit system of the utensil heated by the induction cooker according to the first aspect of the utility model comprises an induction cooker circuit module arranged on an induction cooker and a heated utensil circuit module arranged on a heated utensil. The induction cooker circuit module comprises a control unit, a heating wire disc connected to the control unit and a signal receiving module. The signal receiving module comprises at least one signal receiving unit. The control unit can control the switch of the heating wire disc according to the signal received by the signal receiving module. The heated utensil circuit module comprises an induction coil, an induction module and a signal sending module. The induction coil is arranged opposite to the heating wire disc. The induction module and the signal sending module are connected to the induction coil. The signal sending module comprises at least one signal sending unit corresponding to the signal receiving unit. The induction module comprises at least one induction unit connected to the signal sending unit.

[0005] The circuit system of the utensil heated by the induction cooker according to the utility model embodiment has at least the following beneficial effects: when normally used, the magnetic field formed by the heating wire disc can make the induction coil generate an induced electromotive force to power the signal sending module. When the induction module is triggered, the signal sending module sends a set signal. After the signal receiving module receives the set signal, the control unit controls the heating wire disc to be powered off, thereby realizing control of the working state of the induction cooker. Since the induction module is arranged on the heated utensil, the induction cooker can be controlled according to the working state of the heated utensil, such as temperature, pressure and steam, and the control is accurate and reliable.

[0006] According to some embodiments of the present application, the induction unit is an induction switch.

[0007] According to some embodiments of the present application, the induction unit is an induction switch, the induction module comprises at least two induction switches, and the induction switch can control the switch of the signal sending module.

[0008] According to some embodiments of the present application, the induction unit is an induction switch, the induction module comprises at least two induction switches, the signal sending module comprises the signal sending unit corresponding to the induction switch, the induction switch can control the switch of the signal sending unit corresponding to the induction switch, and the signal receiving module comprises the signal receiving unit corresponding to the signal sending unit.

[0009] According to some embodiments of the present application, the induction switch induction unit is a temperature control switch, a dry burning protection switch, a water level switch, a steam switch, a pressure switch, a deformation switch, a travel switch or an electronic switch circuit.

[0010] According to some embodiments of the present application, the induction unit is a temperature control switch, the induction module comprises at least two temperature control switches with different temperatures, the signal sending module comprises the signal sending unit corresponding to the temperature control switch, the temperature control switch can control the switch of the signal sending unit corresponding to the temperature control switch, and the signal receiving module comprises the signal receiving unit corresponding to the signal sending unit.

[0011] According to some embodiments of the present application, the signal sending unit is a mutual inductance sending coil, the signal receiving unit is a mutual inductance receiving coil corresponding to the mutual inductance sending coil, the control unit can receive the induction signal of the mutual inductance receiving coil, and the on-off of the heating wire disc is controlled through the induction signal.

[0012] According to some embodiments of the present application, the signal sending unit is a light emitting element, the signal receiving unit is a photoelectric inductor corresponding to the light emitting element, the control unit can receive the induction signal of the photoelectric inductor, and the on-off of the heating wire disc is controlled through the induction signal.

[0013] According to some embodiments of the present application, the signal sending unit is a wireless radio sending unit, the signal receiving unit is a wireless radio receiving unit corresponding to the wireless radio sending unit, the control unit can receive the induction signal of the wireless radio receiving unit, and the on-off of the heating wire disc is controlled through the induction signal.

[0014] According to some embodiments of the present application, the signal sending unit is an acoustic wave sending unit, the signal receiving unit is an acoustic wave receiving unit corresponding to the acoustic wave sending unit, the control unit can receive the acoustic wave signal of the acoustic wave receiving unit, and the on-off of the heating wire coil is controlled through the acoustic wave signal.

[0015] According to some embodiments of the present application, the heated appliance circuit module is arranged in the shell of the heated appliance, or the heated appliance circuit module is arranged at the bottom of the heated appliance. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0017] Figure 1 A circuit schematic diagram of the circuit system of the appliance heated by the electromagnetic oven according to the embodiments of the present application;

[0018] Figure 2 A circuit diagram of the circuit system using a single inductive switch according to the embodiments of the present application;

[0019] Figure 3 One of the circuit diagrams of the circuit system using multiple inductive switches according to the embodiments of the present application;

[0020] Figure 4 The second of the circuit diagrams of the circuit system using multiple inductive switches according to the embodiments of the present application;

[0021] Figure 5 A circuit diagram of the circuit system of the electronic switch circuit according to the embodiments of the present application;

[0022] Figure 6 A structural schematic diagram when the heated appliance circuit module is arranged in the shell of the heated appliance according to the embodiments of the present application;

[0023] Figure 7 A structural schematic diagram when the heated appliance circuit module is arranged at the bottom of the heated appliance according to the embodiments of the present application.

[0024] LIST OF REFERENCE NUMERALS

[0025] The heated appliance main body 900, the cavity 901, the shell 910, and the circuit board assembly 920. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used merely for the purpose of explaining the present application, and should not be construed as limiting the present application.

[0027] In the description of the present application, it should be understood that, if the orientation description, such as up, down, front, back, left, right and the like, is described, the orientation or position relationship shown in the drawings is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In the description of the present application, if the first, second, etc. are described, they are only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0029] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0030] The following reference is made to Figures 1 to 7 The circuit system of the appliance heated by the induction cooker according to the embodiments of the present application is described.

[0031] As Figure 1 shown, the circuit system of the appliance heated by the induction cooker according to the embodiments of the present application comprises an induction cooker circuit module arranged on the induction cooker and a heated appliance circuit module arranged on the heated appliance, the induction cooker circuit module comprises a control unit and a heating coil connected with the control unit, and a signal receiving module, the signal receiving module comprises at least one signal receiving unit, the control unit can control the switching of the heating coil according to the signal received by the signal receiving module, the heated appliance circuit module comprises an induction coil, an induction module and a signal sending module, the induction coil is arranged opposite to the heating coil, the induction module and the signal sending module are connected to the induction coil, the signal sending module comprises at least one signal sending unit corresponding to the signal receiving unit, and the induction module comprises at least one induction unit connected with the signal sending unit.

[0032] In normal use, the magnetic field formed by the heating coil can cause the induction coil to generate an induced electromotive force, thereby powering the signal sending module; the signal receiving module is configured to receive the signal from the signal sending module; when the induction module is triggered, the signal sending module sends a set signal; after the signal receiving module receives the set signal, the control unit controls the heating coil to be powered off, thereby controlling the working state of the induction cooker; since the induction module is arranged on the heated appliance, the induction cooker can be controlled according to the working state of the heated appliance, such as temperature, pressure, steam, etc., and the control is accurate and reliable.

[0033] In some embodiments of the present application, the induction unit is a normally closed induction switch; when the induction module is triggered, the normally closed induction switch is opened, the signal sending module is powered off, the signal receiving module does not receive the signal from the signal sending module, and the control unit controls the heating coil to be powered off, thereby controlling the working state of the induction cooker.

[0034] It can be understood that, in some embodiments of the present application, the induction unit can also be a normally open induction switch; at this time, the induction cooker can be controlled in cooperation with the corresponding control circuit or the signal sending condition opposite to the above-mentioned signal sending module.

[0035] In some embodiments of the present application, the heated appliance can be a kettle, a pot (such as a pressure cooker, a flat-bottomed pot, etc.), etc.

[0036] In some embodiments of the present application, the induction coil, the induction module and the signal sending module are connected in series to meet the control of the power supply of the signal sending module.

[0037] As shown in Figure 2 In some embodiments of the present application, the induction unit is an induction switch, the induction module includes one induction switch K, the signal sending module includes one signal sending unit, and the signal receiving module includes one signal receiving unit, thereby meeting the control effect of a single function.

[0038] Specifically, the heating coil IH is powered by the power circuit of the induction cooker, the control unit MCU is configured to control the power circuit of the induction cooker and receive the signal from the signal receiving unit, the induction coil L is correspondingly arranged with the heating coil IH, the induction switch K is preferably a normally closed induction switch or a normally open induction switch, and the induction switch K can be a temperature control switch, a dry burning protection switch, a water level switch, a steam switch or a pressure switch, so as to control the working state of the induction cooker through temperature, dry burning, water level, steam or pressure.

[0039] As shown in Figure 3 In some embodiments of the present application, the induction unit is an induction switch, the induction module includes at least two induction switches K, and the induction switch can control the switch of the signal sending module, thereby realizing the effect of controlling the working state of the induction cooker by multiple functions.

[0040] Specifically, the heating coil IH is powered by the power supply circuit of the induction cooker, the control unit MCU is used for controlling the power supply circuit of the induction cooker and the signal of the signal receiving unit, the induction coil L is correspondingly arranged with the heating coil IH, the induction switch K is a normally closed induction switch, at least two induction switches K are connected in series, the signal sending module includes a signal sending unit, the signal receiving module includes a signal receiving unit, when any one of the induction switches K is triggered to open, the signal sending unit is powered off, the signal receiving module cannot receive the signal, and the heating coil is powered off.

[0041] As shown in Figure 4 the induction unit is an induction switch, in some embodiments of the present application, the induction module includes at least two induction switches K, the signal sending module includes a signal sending unit correspondingly arranged with the induction switch K, the induction switch K can control the switch of the signal sending unit correspondingly arranged therewith, and the signal receiving module includes a signal receiving unit correspondingly arranged with the signal sending unit, so that the effect of multiple functions controlling the operation of the induction cooker together is realized.

[0042] Specifically, as shown in Figure 4 the heating coil IH is powered by the power supply circuit of the induction cooker, the control unit MCU is used for controlling the power supply circuit of the induction cooker and the signal of the signal receiving unit, the induction coil L is correspondingly arranged with the heating coil IH, one induction switch K and one signal sending unit form an independent circuit and are connected in parallel to the power supply circuit of the induction coil, the induction switch K is normally open or normally closed, when one of the induction switches K is triggered to open / close, the corresponding signal sending unit is powered off / powered on, the corresponding signal receiving unit does not receive / accept the signal, the control unit controls the heating coil to be powered off, and the induction switch K can be a temperature control switch, a dry burning protection switch, a water level switch, a steam switch or a pressure switch, so as to control the operation of the induction cooker through the temperature, dry burning, water level, steam or pressure state.

[0043] It can be understood that in some embodiments of the present application, a plurality of groups of heated appliance circuit modules can also be arranged, that is, an independent heated appliance circuit module is arranged for each single function induction switch, and the independent induction control function of multiple states can also be met.

[0044] In some embodiments of the present application, the power supply circuit of the induction cooker is a conventional induction cooker power supply and control circuit, which is not described in detail here.

[0045] In some embodiments of this utility model, the sensing unit is a temperature control switch, a dry-burning protection switch, a water level switch, a steam switch, a pressure switch, a deformation switch, a limit switch, or an electronic switch circuit, etc., to achieve the corresponding functional control effect.

[0046] In some embodiments of this utility model, the sensing unit is a temperature control switch, the sensing module includes at least two temperature control switches with different temperature control temperatures, the signal transmitting module includes a signal transmitting unit configured one-to-one with the temperature control switch, the temperature control switch can control the switching of the signal transmitting unit configured corresponding to it, and the signal receiving module includes a signal receiving unit configured one-to-one with the signal transmitting unit. Multiple temperature control switches with different temperature control temperatures, together with independent signal transmitting units and signal receiving units, can control the power on and off of the heating coil at different temperatures.

[0047] Specifically, multiple temperature control switches can be like Figure 4 The circuit diagram shown allows independent control of the corresponding signal transmitting and receiving units, enabling independent control of the heating coil's power supply. Multiple temperature control switches have different controlled temperatures. For example, if the heated appliance is a kettle, three temperature control switches can be configured with controlled temperatures of 100℃, 85℃, and 45℃. 85℃ and 45℃ are the keep-warm temperatures. The user can set these temperatures on the induction cooker's control panel and record them in the control unit. When 45℃ is selected as the keep-warm temperature, after the user presses the boil button, the control unit selects the temperature control switch with a controlled temperature of 100℃ as the control condition, and the water temperature in the heated appliance reaches 10℃. At 0℃, the temperature control switch with a temperature of 100℃ is triggered and opened, the heating coil is de-energized, and the temperature control switch system with a temperature of 100℃ is reset. At the same time, the control unit selects the temperature control switch with a temperature of 45℃ as the control condition. When the water temperature is between 100℃ and 45℃, the temperature control switch with a temperature of 45℃ is triggered and opened, and the heating coil remains de-energized. When the water temperature drops below 45℃, the temperature control switch with a temperature of 45℃ closes, enabling the signal sending and receiving units of the corresponding temperature control switch with a temperature of 45℃ to send and receive signals normally. The control unit controls the heating coil to be energized, thereby realizing the temperature control function.

[0048] In some embodiments of this invention, the sensing unit can change its resistance or the on / off state of the circuit due to the influence of the working state of the heated appliance.

[0049] In some embodiments of the utility model, the heated appliance circuit module further includes voltage stabilizing circuit and voltage comparator, the induction coil is connected with the voltage stabilizing circuit and can output power voltage VCC, the induction unit is induction variable resistor, power voltage VCC is connected to the positive input end of voltage comparator through first voltage dividing circuit, the first voltage dividing circuit includes the induction variable resistor, power voltage VCC is connected to the inverting input end of voltage comparator through second voltage dividing circuit, power voltage VCC is connected to the signal sending unit through control on-off loop, and the output end of voltage comparator is connected to the control on-off loop to control the on-off of signal sending unit, the voltage of positive input end of voltage comparator is influenced when the resistance of induction variable resistor changes, voltage comparator compares the voltage of positive input end and inverting input end, and control signal is output at the output end of voltage comparator, thereby the working of signal sending unit is controlled.

[0050] As Figure 5 As shown in some embodiments of the utility model, the heated appliance circuit module includes voltage comparison switch circuit, adopts LM393 voltage comparator, and the induction variable resistor is thermistor RT, wherein the induction coil L is correspondingly arranged with heating wire disc IH, forms power voltage VCC through voltage stabilizing circuit, the electronic light emitting element VD is used as signal sending unit, the photoresistor RL is used as signal receiving unit and is connected with control unit, power voltage VCC is connected to the output end of LM393 and the input end of electronic light emitting element VD through voltage dividing resistor R4, forms control on-off loop, thermistor RT and resistor R1 form first voltage dividing circuit, the input end of resistor R1 is connected to power voltage VCC, the output end of resistor R1 is connected to thermistor RT and the positive input end of LM393 respectively, resistor R2 and resistor R3 are connected to form second voltage dividing circuit, the input end of resistor R2 is connected to power voltage VCC, and the output end of resistor R2 is connected to resistor R3 and the inverting input end of LM393 respectively, thermistor RT is arranged in the corresponding heated appliance, when the temperature of heated appliance changes (or reaches the set temperature), the resistance of thermistor RT changes, the voltage of positive input end of LM393 is influenced, when the voltage of positive input end of LM393 is higher than the voltage of inverting input end of LM393, the output end of LM393 outputs high level voltage, when the voltage of positive input end of LM393 is lower than the voltage of inverting input end of LM393, the output end of LM393 outputs low level voltage, thereby the light emitting condition of electronic light emitting element VD is controlled, the photoresistor RL obtains control signal through the photosensitive condition of electronic light emitting element VD and transmits to control unit, thereby the control of heating wire disc is realized.

[0051] Of course, in the specific implementation process, the electronic switch circuit can also adopt other switch circuits, which are not described here in detail.

[0052] In some embodiments of the utility model, the inductive switch is a normally closed switch, and when not triggered, the power supply of the signal sending unit can be maintained, and when triggered, the power supply of the signal sending unit is disconnected, so that the signal receiving unit cannot receive signals, and the control unit controls the heating wire disc to be powered off in this way.

[0053] It can be understood that, in some embodiments of the utility model, the inductive switch is a normally open switch, and when not triggered, the power supply of the signal sending unit is disconnected, and when triggered, the power supply of the signal sending unit is connected, so that the signal receiving unit can receive signals, and the control unit controls the heating wire disc to be powered off in this way.

[0054] In some embodiments of the utility model, the signal sending unit is a mutual inductance sending coil Ls, the signal receiving unit is a mutual inductance receiving coil Lr corresponding to the mutual inductance sending coil Ls, and the control unit can receive the inductive signal of the mutual inductance receiving coil Lr and control the on-off of the heating wire disc through the inductive signal.

[0055] Specifically, as shown in Figure 2 , Figure 3 , Figure 4 The signal sending unit is a mutual inductance sending coil Ls, the signal receiving unit is a mutual inductance receiving coil Lr corresponding to the mutual inductance sending coil Ls, and the mutual inductance sending coil Ls and the mutual inductance receiving coil Lr are correspondingly arranged to realize the transmission of the inductive unit trigger signal through the magnetic induction principle.

[0056] Specifically, when the mutual inductance sending coil Ls is powered on, a magnetic field is formed, so that the mutual inductance receiving coil Lr generates an electromotive force, thereby forming a control signal to the control unit.

[0057] In some embodiments of the utility model, the signal sending unit is a light emitting element, the signal receiving unit is a photoelectric inductor corresponding to the light emitting element, the control unit can receive the inductive signal of the photoelectric inductor, and control the on-off of the heating wire disc through the inductive signal, and realize the transmission of the inductive unit trigger signal through the detection of light.

[0058] Specifically, the light emitting element can be an infrared light source, and the photoelectric inductor can be an infrared receiver, a photoresistor, etc., and a signal can be formed according to the light emitting condition of the light emitting element and transmitted to the control unit.

[0059] In some embodiments of the utility model, the signal sending unit is a wireless radio sending unit, the signal receiving unit is a wireless radio receiving unit corresponding to the wireless radio sending unit, the control unit can receive the inductive signal of the wireless radio receiving unit, and control the on-off of the heating wire disc through the inductive signal, and realize the transmission of the inductive unit trigger signal through the wireless radio signal.

[0060] It can be understood that, in some embodiments of the utility model, the signal sending unit is a sound wave sending unit, the signal receiving unit is a sound wave receiving unit corresponding to the sound wave sending unit, the control unit can receive the sound wave signal of the sound wave receiving unit, and the on-off of the heating wire disc is controlled through the sound wave signal, and the transmission of the induction unit trigger signal is realized through the sound wave signal.

[0061] As shown in Figure 2 , Figure 3 , Figure 4 In some embodiments of the utility model, the control unit is MCU (Microcontroller Unit), and the control function can be met through the set program, of course, in the specific implementation process, the control unit can also be other processor units, which are not described here in detail.

[0062] In some embodiments of the utility model, the signal sending unit is a radio sending unit, the signal receiving unit is a radio receiving unit corresponding to the radio sending unit, and the control unit can receive the induction signal of the radio receiving unit and control the on-off of the heating wire disc through the induction signal.

[0063] In some embodiments of the utility model, the heating appliance circuit module is arranged in the shell of the heating appliance to hide the heating appliance circuit module.

[0064] Specifically, as shown in Figure 6 , the side wall of the heating appliance body 900 is provided with a shell 910, and the shell 910 is provided with a space capable of accommodating the circuit board assembly 920 or electronic elements.

[0065] In some embodiments of the utility model, the heating appliance circuit module is arranged at the bottom of the heating appliance to hide the heating appliance circuit module.

[0066] Specifically, as shown in Figure 7 , the bottom of the heating appliance body 900 is provided with a cavity 901 for accommodating the circuit board assembly 920 or electronic elements.

[0067] In some embodiments of the utility model, the heating appliance is a water boiler, and the induction switch K can be a temperature control switch, a dry burning protection switch, a water level switch, a steam switch, etc., and is arranged by using the circuit diagram as shown in Figures 2 to 4 , the working of the induction switch K can be controlled through the temperature, dry burning, water level, steam, etc. of the water boiler, so that the safety and reliability of the water boiler used on the induction cooker are improved.

[0068] In some embodiments of the utility model, the heating appliance is a pressure cooker, and the induction switch can be a temperature control switch, a dry burning protection switch, a pressure switch, etc., and is arranged by using the circuit diagram as shown in Figures 2 to 4The circuit diagram shown is arranged to control the work of the electromagnetic oven by the temperature, dry burning, pressure and other conditions of the pressure cooker, thereby improving the safety and reliability of the pressure cooker used on the electromagnetic oven.

[0069] Of course, the utility model is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the application.

Claims

1. Circuitry of an appliance for heating with an electromagnetic hob, characterized in that, The application relates to a circuit system of an appliance heated by an electromagnetic oven, comprising: an electromagnetic oven circuit module arranged in the electromagnetic oven, the electromagnetic oven circuit module comprising a control unit, a heating coil disc connected with the control unit, and a signal receiving module comprising at least one signal receiving unit; a heated appliance circuit module arranged in the heated appliance, the heated appliance circuit module comprising an induction coil, an induction module and a signal sending module, the induction coil being arranged opposite to the heating coil disc, the induction module and the signal sending module being connected to the induction coil, the signal sending module comprising at least one signal sending unit corresponding to the signal receiving unit, and the induction module comprising at least one induction unit connected to the signal sending unit.

2. The circuit system of the appliance heated by the electromagnetic oven according to claim 1, wherein the induction unit is an induction switch, the induction module comprises at least two induction switches, and the induction switches can control the switch of the signal sending module.

3. The circuit system of the appliance heated by the electromagnetic oven according to claim 1, wherein the induction unit is an induction switch, the induction module comprises at least two induction switches, the signal sending module comprises the signal sending units corresponding to the induction switches one by one, the induction switches can control the switch of the corresponding signal sending units, and the signal receiving module comprises the signal receiving units corresponding to the signal sending units one by one.

4. The circuit system of the appliance heated by the electromagnetic oven according to claim 1 or 2 or 3, wherein the induction unit is a temperature control switch, a dry burning protection switch, a water level switch, a steam switch, a pressure switch, a deformation switch, a travel switch or an electronic switch circuit.

5. The circuit system of the appliance heated by the electromagnetic oven according to claim 1, wherein the induction unit is a temperature control switch, the induction module comprises at least two temperature control switches with different temperature control temperatures, the signal sending module comprises the signal sending units corresponding to the temperature control switches one by one, the temperature control switches can control the switch of the corresponding signal sending units, and the signal receiving module comprises the signal receiving units corresponding to the signal sending units one by one.

6. The circuit system of the appliance heated by the electromagnetic oven according to claim 1, wherein the signal sending unit is a mutual inductance sending coil, the signal receiving unit is a mutual inductance receiving coil corresponding to the mutual inductance sending coil, and the control unit can receive the induction signal of the mutual inductance receiving coil and control the on-off of the heating coil disc through the induction signal.

7. The circuit system of the appliance heated by the electromagnetic oven according to claim 1, wherein the signal sending unit is a light emitting element, the signal receiving unit is a photoelectric inductor corresponding to the light emitting element, and the control unit can receive the induction signal of the photoelectric inductor and control the on-off of the heating coil disc through the induction signal. ​ ​ ​ ​ ​ ​ 8. The circuit system of the appliance heated by the electromagnetic oven according to claim 1, wherein the signal sending unit is a radio sending unit, the signal receiving unit is a radio receiving unit corresponding to the radio sending unit, and the control unit can receive an induction signal of the radio receiving unit and control the on-off of the heating coil through the induction signal.

9. The circuit system of the appliance heated by the electromagnetic oven according to claim 1, wherein the signal sending unit is a sound wave sending unit, the signal receiving unit is a sound wave receiving unit corresponding to the sound wave sending unit, and the control unit can receive a sound wave signal of the sound wave receiving unit and control the on-off of the heating coil through the sound wave signal.

10. The circuit system of the appliance heated by the electromagnetic oven according to claim 1, wherein the heated appliance circuit module is arranged in the shell of the heated appliance; or the heated appliance circuit module is arranged at the bottom of the heated appliance. ​ ​ ​ ​ ​

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