Control circuit integrating electromagnetism and electric heating

Abstract

The utility model discloses a control circuit integrating electromagnetism and electric heating. An input terminal and an output terminal; a main control unit IC1; the driving circuit is used for conducting connection between an input end and an output end, and the driving circuit is controlled by the main control unit IC1 so as to send a test signal to conduct connection; and the feedback circuit is connected with the output end and feeds back a signal to the main control unit IC1 so as to start the induction cooker heating or the electric ceramic cooker heating, the main control unit IC1 sends a test signal to the driving circuit so as to start the heating, and then the feedback circuit collects information so as to judge whether the working cookware is suitable for the induction cooker to work or not. Therefore, it is determined that the induction cooker or the electric ceramic cooker is adopted for heating.

Description

Technical Field

[0001] This utility model relates to the field of heating, and in particular to a control circuit that integrates electromagnetic heating. Background Technology

[0002] An electric ceramic cooker converts electrical energy into heat energy through the heating effect of electric current. It uses an iron-chromium heating element (resistance wire) to generate heat, and then transfers the heat to the cookware through infrared radiation and heat conduction to achieve cooking.

[0003] The advantage of electric ceramic cooktops is that they are not picky about cookware materials; they can heat iron, aluminum, ceramic, glass, etc. At the same time, in order to make electric ceramic cooktops suitable for different usage scenarios, multi-functional electric ceramic cooktops have begun to appear on the market, which can realize everyday functions such as hot pot, stir-frying, steaming, stewing, timer, and reservation. Therefore, more complex hardware circuits need to be designed to achieve the corresponding functions.

[0004] Induction cookers have gained popularity in the market because they break away from traditional open-flame cooking methods and instead use the principle of magnetic field induction eddy current heating to directly heat the bottom of the pot, greatly improving heating efficiency. However, due to their special heating method, induction cookers have strict requirements on the pots they use; they can only be used with cookware containing iron or steel.

[0005] Traditional induction cookers use the principle of magnetic field induction eddy current heating, which directly heats the bottom of the cookware. However, this also places strict requirements on the cookware.

[0006] Traditional electric ceramic stoves, while not picky about cookware, have low heating efficiency because they use iron-chromium heating elements (resistance wires) to generate heat, which is then transferred to the cookware through infrared radiation and heat conduction. Utility Model Content

[0007] To solve the above problems, this technical solution provides a control circuit that integrates electromagnetic and electrothermal heating.

[0008] To achieve the above objectives, the technical solution is as follows:

[0009] A control circuit integrating electromagnetic and electrothermal energy, including;

[0010] Input and output terminals;

[0011] Main control unit IC1;

[0012] A driving circuit is used to connect the input terminal and the output terminal. The driving circuit is controlled by the main control unit IC1 to send a test signal to activate the circuit.

[0013] A feedback circuit is connected to the output terminal and feeds the signal back to the main control unit IC1 to turn on the induction cooker heating or the ceramic cooker heating.

[0014] In some embodiments, the feedback circuit includes;

[0015] Resistors R3, R8, R10, R12, R14, R17, and R19 are connected in sequence to one end of the output terminal. One end of resistor R19 is grounded, and the other end is connected to the main control unit IC1.

[0016] It also includes resistors R5, R2, R7, R11, R15, R17, R39, R40, R18 and R20 connected in sequence to the other end of the output terminal. One end of resistor R20 is grounded and the other end is connected to the main control unit IC1.

[0017] In some embodiments, a capacitor C7 is connected between the other end of resistor R19 and the other end of resistor R20.

[0018] In some embodiments, the driving circuit includes an IGBT1 transistor, the emitter of which is grounded, the collector of which is connected to the other end of the output terminal, and the base of which is connected to the main control unit IC1 through a resistor R4.

[0019] In some embodiments, a voltage detection circuit is also included, which includes resistors R21, R29, R23 and R32 connected to the input terminal. One end of resistor R32 is grounded and the other end is connected to the main control unit IC1.

[0020] In some embodiments, a surge detection circuit is also included, which includes resistors R22, R24, R30 and R33 connected to the input terminal. One end of resistor R33 is grounded and the other end is connected to the main control unit IC1.

[0021] In some embodiments, a zero-crossing detection circuit is also included, which includes resistors R26, R27 and R28 connected to the input terminal, and resistor R28 is also connected to the main control unit IC1.

[0022] In some embodiments, an IGBT1 temperature detection circuit is also included, which includes a resistor R34. One end of the resistor R34 receives a voltage, and the other end is grounded through a temperature sensor RT1. The other end of the resistor R34 is also connected to the main control unit IC1.

[0023] In some embodiments, a furnace surface temperature detection circuit is also included, which includes a resistor R35. One end of the resistor R35 receives a voltage, and the other end is grounded through terminal TOP1. The other end of the resistor R35 is connected to the main control unit IC1.

[0024] The beneficial effects of this application are:

[0025] This application sends a probe signal to the drive circuit through the main control unit IC1 to start the heating. Then, it collects information through the feedback circuit to determine whether the cookware is suitable for induction cooker operation, thereby determining whether to use induction cooker heating or ceramic cooker heating. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0027] Figure 1 This is a schematic diagram of the block structure of an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the circuit structure of an embodiment of the present invention. Detailed Implementation

[0029] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] Please refer to Figure 1-2 As shown, the control circuit integrating electromagnetic and electrothermal functions includes:

[0031] Input and output terminals;

[0032] Main control unit IC1;

[0033] A driving circuit is used to connect the input terminal and the output terminal. The driving circuit is controlled by the main control unit IC1 to send a test signal to activate the circuit.

[0034] A feedback circuit is connected to the output terminal and feeds the signal back to the main control unit IC1 to turn on the induction cooker heating or the ceramic cooker heating.

[0035] This application sends a probe signal to the drive circuit through the main control unit IC1 to start the heating. Then, it collects information through the feedback circuit to determine whether the cookware is suitable for induction cooker operation, thereby determining whether to use induction cooker heating or ceramic cooker heating.

[0036] In some embodiments, the feedback circuit includes;

[0037] Resistors R3, R8, R10, R12, R14, R17, and R19 are connected in sequence to one end of the output terminal. One end of resistor R19 is grounded, and the other end is connected to the main control unit IC1.

[0038] It also includes resistors R5, R2, R7, R11, R15, R17, R39, R40, R18 and R20 connected in sequence to the other end of the output terminal. One end of resistor R20 is grounded and the other end is connected to the main control unit IC1.

[0039] Specifically, the main control unit IC1 uses the OB6654 microcontroller. The microcontroller first outputs a test signal, and by detecting the feedback signal from the peripheral circuit, it determines whether the cookware used is suitable for heating on an induction cooker, thereby determining whether to use an induction cooker or an electric ceramic cooker for heating.

[0040] The circuit operation process of this utility model is as follows: The microcontroller sends a test signal to the coil through components such as D3, C20, R4, R6, and ZD1, and judges the feedback circuit signal composed of components such as R3, R8, R10, R12, R14, R17, R19, C8, C7, R7, R11, R15, R39, R40, R18, R20, and C9 to determine whether the pot being worked is suitable for induction cooker operation, and thus determines whether to use induction cooker heating or ceramic cooker heating.

[0041] This invention utilizes a microcontroller, model OB6654, to output a test signal to determine whether the cookware used by the user is suitable for induction cooker heating. This determines whether to use an induction cooker or an electric ceramic cooker for heating, thus realizing an integrated electromagnetic and electric ceramic circuit solution. It can meet the high-efficiency heating requirements when using an induction cooker and is also compatible with various types of cookware.

[0042] In some embodiments, a capacitor C7 is connected between the other end of resistor R19 and the other end of resistor R20.

[0043] In some embodiments, the driving circuit includes an IGBT1 transistor, the emitter of which is grounded, the collector of which is connected to the other end of the output terminal, and the base of which is connected to the main control unit IC1 through a resistor R4. By sending a driving signal to the IGBT1 transistor, it is turned on and thus grounded.

[0044] In some embodiments, a voltage detection circuit is also included, which includes resistors R21, R29, R23 and R32 connected to the input terminal. One end of resistor R32 is grounded and the other end is connected to the main control unit IC1.

[0045] In some embodiments, a surge detection circuit is also included, which includes resistors R22, R24, R30 and R33 connected to the input terminal. One end of resistor R33 is grounded and the other end is connected to the main control unit IC1. After the voltage is input, it is stepped down through multiple resistors in sequence and finally collected by the main control unit IC1 for voltage detection.

[0046] In some embodiments, a zero-crossing detection circuit is also included, which includes resistors R26, R27 and R28 connected to the input terminal. Resistor R28 is also connected to the main control unit IC1. The AC current is collected by the main control unit through multiple resistors to obtain the zero-crossing point.

[0047] In some embodiments, an IGBT1 temperature detection circuit is also included, which includes a resistor R34. One end of the resistor R34 receives a voltage, and the other end is grounded through a temperature sensor RT1. The other end of the resistor R34 is also connected to the main control unit IC1. When the resistance of the temperature sensor RT1 changes with temperature, the voltage of the +5V voltage reaching the main control unit IC1 after being divided by the sensor also changes, thereby detecting the operating temperature of the IGBT1 transistor.

[0048] In some embodiments, a furnace surface temperature detection circuit is also included, which includes a resistor R35. One end of the resistor R35 receives a voltage, and the other end is grounded through the terminal TOP1. The other end of the resistor R35 is connected to the main control unit IC1. The terminal is used to connect to a temperature sensor, which also changes its resistance with temperature and is then detected by the main control unit IC1.

[0049] The above description is only a preferred embodiment of this application and is not intended to limit the scope of implementation of this application. Any other embodiments whose principles and basic structures are the same as or similar to those of this application are within the protection scope of this application.

Claims

1. A control circuit for electromagnetic electrothermal collection, characterized by, include; Input and output terminals; Main control unit IC1; A driving circuit is used to connect the input terminal and the output terminal. The driving circuit is controlled by the main control unit IC1 to send a test signal to activate the circuit. A feedback circuit is connected to the output terminal and feeds the signal back to the main control unit IC1 to turn on the induction cooker heating or the ceramic cooker heating.

2. The control circuit integrating electromagnetic and electrothermal functions according to claim 1, characterized in that: The feedback circuit includes: Resistors R3, R8, R10, R12, R14, R17, and R19 are connected in sequence to one end of the output terminal. One end of resistor R19 is grounded, and the other end is connected to the main control unit IC1. It also includes resistors R5, R2, R7, R11, R15, R17, R39, R40, R18 and R20 connected in sequence to the other end of the output terminal. One end of resistor R20 is grounded and the other end is connected to the main control unit IC1.

3. The magnetically and electrically heated current collection control circuit of claim 2, wherein: A capacitor C7 is connected between the other end of resistor R19 and the other end of resistor R20.

4. The magnetically and electrically heated current collection control circuit of claim 2, wherein: The driving circuit includes an IGBT1 transistor, the emitter of which is grounded, the collector of which is connected to the other end of the output terminal, and the base of which is connected to the main control unit IC1 through a resistor R4.

5. The magnetically and electrically heated current collection control circuit of claim 1, wherein: It also includes a voltage detection circuit, which includes resistors R21, R29, R23 and R32 connected to the input terminal. One end of resistor R32 is grounded and the other end is connected to the main control unit IC1.

6. The magnetically and electrically heated current collection control circuit of claim 5, wherein: It also includes a surge detection circuit, which includes resistors R22, R24, R30 and R33 connected to the input terminal. One end of resistor R33 is grounded and the other end is connected to the main control unit IC1.

7. The magnetically and electrically powered control circuit of claim 1, wherein: It also includes a zero-crossing detection circuit, which includes resistors R26, R27 and R28 connected to the input terminal, and resistor R28 is also connected to the main control unit IC1.

8. The magnetically and electrically powered control circuit of claim 1, wherein: It also includes an IGBT1 temperature detection circuit, which includes a resistor R34. One end of the resistor R34 receives a voltage, and the other end is grounded through the temperature sensor RT1. The other end of the resistor R34 is also connected to the main control unit IC1.

9. The magnetically and electrically powered control circuit of claim 1, wherein: It also includes a furnace surface temperature detection circuit, which includes a resistor R35. One end of the resistor R35 receives a voltage, and the other end is grounded through terminal TOP1. The other end of the resistor R35 is connected to the main control unit IC1.

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