Electromagnetic heating appliance control method, device and electromagnetic heating appliance

Abstract

The application relates to an electromagnetic heating appliance control method and device and an electromagnetic heating appliance. The method comprises the following steps: obtaining a sampling current detected by a current sampling device on a main loop of electromagnetic oscillation and a power output circuit of the electromagnetic heating appliance; detecting whether the electromagnetic heating appliance contains medium according to the sampling current and preset judgment data; and controlling the electromagnetic oscillation and the power output circuit to stop electromagnetic oscillation in a state where the electromagnetic heating appliance does not contain medium. The electromagnetic heating appliance is detected whether to contain medium by combining the sampling current and the preset judgment data, and the electromagnetic oscillation and the power output circuit are controlled to stop electromagnetic oscillation in the state where the electromagnetic heating appliance does not contain medium, so that the waste of electric energy or the device failure caused by the working of the electromagnetic heating appliance in the state where the electromagnetic heating appliance does not contain medium is avoided, the service life of the appliance is prolonged, the electric energy loss is reduced, and the use convenience of the electromagnetic heating appliance is improved.

Description

Technical Field

[0001] This application relates to the field of heating equipment technology, and in particular to a control method, apparatus and electromagnetic heating appliance for an electromagnetic heating appliance. Background Technology

[0002] With the development of technology and the continuous progress of society, more and more electrical appliances are appearing in people's daily work and life. Electromagnetic heaters use the principle of electromagnetic induction heating, which can achieve heating without direct contact with the heated medium. However, existing electromagnetic heaters continue to heat after starting, which can easily lead to problems such as high power consumption or hardware failure, resulting in low ease of use. Summary of the Invention

[0003] Therefore, it is necessary to provide a control method, device, and electromagnetic heater that can improve ease of use in response to the above problems.

[0004] A method for controlling an electromagnetic heating appliance, comprising:

[0005] The sampling current is obtained by the current sampling device from the electromagnetic oscillation and the main circuit where the power output circuit of the electromagnetic heater is located.

[0006] The electromagnetic heater is used to detect whether it contains a medium based on the sampling current and preset judgment data.

[0007] When the electromagnetic heater is not filled with a medium, the electromagnetic oscillation and power output circuit is controlled to stop the electromagnetic oscillation.

[0008] In one embodiment, the determination data includes a determination threshold. Before detecting whether the electromagnetic heating appliance contains a medium based on the sampled current and the preset determination data, the method further includes: determining the determination threshold based on the type of material used for heating the medium.

[0009] In one embodiment, determining the judgment threshold based on the type of material used for medium heating includes:

[0010] When the material used to heat the medium is a first type of material, the determination threshold is set to be less than the DC current when the electromagnetic heater is in an unloaded state; when the electromagnetic heater contains a medium heated using the first type of material, the DC current of the main circuit is less than the DC current when the electromagnetic heater is in an unloaded state.

[0011] In one embodiment, detecting whether the electromagnetic heating appliance contains a medium based on the sampled current and preset judgment data includes:

[0012] If the sampling current is less than the determination threshold, the electromagnetic heater contains a medium.

[0013] In one embodiment, determining the threshold based on the type of material used for medium heating further includes:

[0014] When the material used to heat the medium is a second type of material, the determination threshold is set to be greater than the DC current when the electromagnetic heater is in an unloaded state; when the electromagnetic heater contains a medium heated using a second type of material, the DC current of the main circuit is greater than the DC current when the electromagnetic heater is in an unloaded state.

[0015] In one embodiment, the step of detecting whether the electromagnetic heater contains a medium based on the sampled current and preset judgment data further includes:

[0016] If the sampling current is greater than the determination threshold, the electromagnetic heater contains a medium.

[0017] In one embodiment, before the current sampling device detects the sampling current obtained from the main circuit containing the electromagnetic oscillation and power output circuit of the electromagnetic heater, it further includes:

[0018] Upon receiving a button wake-up command or after a set duration of electromagnetic oscillation shutdown, the electromagnetic oscillation and power output circuit is controlled to start electromagnetic oscillation.

[0019] In one embodiment, after controlling the electromagnetic oscillation and power output circuit to stop electromagnetic oscillation when the electromagnetic heater is not containing a medium, the method further includes: after a preset delay, returning to the step of controlling the electromagnetic oscillation and power output circuit to start electromagnetic oscillation, until the number of times electromagnetic oscillation is turned off reaches a preset number.

[0020] An electromagnetic heating appliance control device, comprising:

[0021] The data acquisition module is used to acquire the sampling current obtained by the current sampling device from the electromagnetic oscillation of the electromagnetic heater and the main circuit where the power output circuit is located.

[0022] The medium detection module is used to detect whether the electromagnetic heater contains a medium based on the sampling current and preset judgment data.

[0023] The heating control module is used to control the electromagnetic oscillation and power output circuit to stop electromagnetic oscillation when the electromagnetic heating appliance is not containing a medium.

[0024] An electromagnetic heating appliance includes a control device, a current sampling device, and an electromagnetic oscillation and power output circuit. The current sampling device is connected to the main circuit of the electromagnetic oscillation and power output circuit, and the control device is connected to both the current sampling device and the electromagnetic oscillation and power output circuit. The current sampling device detects and samples the current in the main circuit of the electromagnetic oscillation and power output circuit and sends the sampled current to the control device. The control device controls the electromagnetic heating according to the method described above.

[0025] The aforementioned electromagnetic heater control method, device, and electromagnetic heater, after the current sampling device detects the electromagnetic oscillation and power output circuit of the electromagnetic heater to obtain the sampled current, combines the sampled current with preset judgment data to detect whether the electromagnetic heater contains a medium. If the electromagnetic heater does not contain a medium, the electromagnetic oscillation and power output circuit is controlled to stop the electromagnetic oscillation, thus avoiding energy waste or device failure caused by the electromagnetic heater operating without a medium, improving the service life of the appliance, reducing energy loss, and improving the ease of use of the electromagnetic heater. Attached Figure Description

[0026] Figure 1 This is a flowchart of an embodiment of an electromagnetic heater control method;

[0027] Figure 2 This is a flowchart of an electromagnetic heater control method in another embodiment;

[0028] Figure 3 This is a schematic diagram of the control flow of an electromagnetic heater with buttons in one embodiment;

[0029] Figure 4 This is a schematic diagram of the control flow of an electromagnetic heater without buttons in one embodiment;

[0030] Figure 5 This is a structural block diagram of an electromagnetic heater appliance control device in one embodiment;

[0031] Figure 6 This is a structural block diagram of an electromagnetic heater appliance in one embodiment. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0033] In one embodiment, a control method for an electromagnetic heating appliance is provided. The electromagnetic heating appliance can be an electronic atomizing device, a heating appliance, or other equipment that uses electromagnetic heating. For ease of understanding, the following explanation will use an electronic atomizing device as the electromagnetic heating appliance and an atomizing medium as the example. Figure 1 As shown, the method includes:

[0034] Step S130: Obtain the sampling current obtained by the current sampling device from the electromagnetic oscillation of the electromagnetic heater and the main circuit where the power output circuit is located.

[0035] Specifically, the main circuit of the electromagnetic oscillation and power output circuit of the electronic atomizing device is connected to an external DC power supply. The control device is connected to the electromagnetic oscillation and power output circuit to control its operation. The electromagnetic oscillation and power output circuit includes an oscillation circuit and a switching control circuit. When the atomizing medium with a metal heater is placed in the electromagnetic coil of the oscillation circuit, the high-frequency oscillation generated by the circuit is induced on the metal plate through the electromagnetic coil, achieving electromagnetic heating and thus power output. A current sampling device directly obtains the current signal from the main circuit, amplifies it, and outputs it to the control device as the basis for medium detection. The control device can be a separate controller or the original controller of the electronic atomizing device. The control device includes a controller and a drive circuit. The controller is connected to the current sampling device and the drive circuit, and the drive circuit is connected to the electromagnetic oscillation and power output circuit. The type of controller is not unique; it can be an MCU (Micro Controller Unit) or an FPGA (Field Programmable Gate Array), etc.

[0036] Step S140: Detect whether the electromagnetic heater contains a medium based on the sampled current and preset judgment data.

[0037] After receiving the sampled current from the current sampling device, the control device analyzes it in conjunction with pre-saved judgment data to determine whether an atomizing medium is contained in the electronic atomizing device. The judgment data may include current thresholds or current curve data. Correspondingly, the control device may compare the sampled current with the current threshold to determine whether the electronic atomizing device contains an atomizing medium. Alternatively, the control device may generate a current heating curve based on the sampled current received within a set time period, compare the current heating curve with the current curve data, and if the error between the two is less than the allowable error threshold, the current heating curve and current curve data are considered to match, and the electronic atomizing device is determined to contain an atomizing medium; otherwise, the current heating curve and current curve data are considered not to match, and the electronic atomizing device does not contain an atomizing medium. Furthermore, in other embodiments, the control device may also analyze the current threshold and current curve data together. If the detected actual current simultaneously meets the conditions corresponding to both the current threshold and the current curve data, the electronic atomizing device is determined to contain an atomizing medium; if one condition is not met, the electronic atomizing device is determined not to contain an atomizing medium.

[0038] Step S150: When the electromagnetic heating device does not contain a medium, the electromagnetic oscillation and power output circuit is controlled to stop electromagnetic oscillation. Correspondingly, when the control device determines that the electronic atomizing device does not contain an atomizing medium, the electromagnetic oscillation and power output circuit is controlled to stop power output, thereby stopping electromagnetic oscillation; if the electronic atomizing device contains an atomizing medium, the control device controls the electronic atomizing device to continue working.

[0039] The above-mentioned electromagnetic heater control method, after the current sampling device detects the electromagnetic oscillation and power output circuit of the electromagnetic heater to obtain the sampled current, combines the sampled current with preset judgment data to detect whether the electromagnetic heater contains a medium. If the electromagnetic heater does not contain a medium, the electromagnetic oscillation and power output circuit is controlled to stop the electromagnetic oscillation, thus avoiding energy waste or device failure caused by the electromagnetic heater working without a medium, improving the service life of the appliance, reducing energy loss, and improving the ease of use of the electromagnetic heater.

[0040] In one embodiment, the determination data includes a determination threshold, such as... Figure 2 As shown, before step S140, the method further includes step S110: determining a judgment threshold based on the type of material used for medium heating.

[0041] Step S110 can be performed before, after, or simultaneously with step S130. The type of material used for heating the medium refers to the type of material selected for the device used to heat the medium. Specifically, depending on the metal material selected for the device heating the atomizing medium, the current change in the main circuit will differ when the electronic atomizing device heats the atomizing medium. For example, when using a device containing a type 1 material alloy or metal to heat the atomizing medium, the current in the main circuit will be less than the current when the electronic atomizing device is unloaded (i.e., without atomizing medium support); when using a device containing a type 2 material alloy or metal to heat the atomizing medium, the current in the main circuit will be greater than the current when the electronic atomizing device is unloaded. When the electronic atomizing device can support heating the atomizing medium using devices of different material types, the control device can pre-store the judgment thresholds corresponding to devices of different material types. After the user places the atomizing medium into the electronic atomizing device, they can input commands through the buttons or other interactive devices of the electronic atomizing device according to the type of material contained in the appliance used to heat the atomizing medium. The control device determines the material type of the appliance used to heat the atomizing medium based on the received commands, and then determines the judgment threshold for atomizing medium detection, which can improve detection accuracy.

[0042] In one embodiment, step S110 includes: setting a determination threshold that is less than the DC current of the electromagnetic heating device in its no-load state when the heating medium is made of a first type of material. Specifically, when the electromagnetic heating device contains a medium heated using the first type of material, the DC current in the main circuit is less than the DC current of the electromagnetic heating device in its no-load state. Specifically, when the control device determines that the electronic atomizing device is using a device containing the first type of material to heat the atomizing medium, it sets a DC current less than the no-load state threshold, for example, selecting 80% of the DC current in the no-load state as the determination threshold.

[0043] Correspondingly, in one embodiment, step S140 includes: if the sampled current is less than a determination threshold, the electromagnetic heating appliance contains a medium. After the control device sets the determination threshold to be less than the DC current when the electromagnetic heating appliance is in an unloaded state, it uses DC current analog sampling and threshold determination. If the detected current value is less than the determination threshold, it is determined that there is an atomizing medium; otherwise, it is determined that there is no atomizing medium. In addition, in other embodiments, to avoid the mixing of other types of materials, the control device can also analyze the current heating curve within a certain time (e.g., 10s-30s) during the heating process when the detected current value is less than the determination threshold. If the current heating curve matches the set curve data, it is determined that there is an atomizing medium; if the current heating curve does not match the set curve data, it is determined that there is no atomizing medium.

[0044] In one embodiment, step S110 further includes: when the heating medium is made of a second type of material, setting a determination threshold greater than the DC current of the electromagnetic heating appliance in its no-load state. Specifically, when the electromagnetic heating appliance contains a medium heated using the second type of material, the DC current in the main circuit is greater than the DC current of the electromagnetic heating appliance in its no-load state. When the control device determines that the electronic atomizing device is using an appliance containing the second type of material to heat the atomizing medium, it sets a DC current greater than the no-load state threshold, for example, selecting 120% of the DC current in the no-load state as the determination threshold.

[0045] Correspondingly, in one embodiment, step S140 further includes: if the sampled current is greater than the determination threshold, then the electromagnetic heating device contains a medium. After the control device sets the determination threshold to be greater than the DC current of the electromagnetic heating device in its no-load state, it uses DC current analog sampling and threshold determination. If the detected current value is greater than the determination threshold, it is determined that there is an atomizing medium; otherwise, it is determined that there is no atomizing medium. Furthermore, to ensure the safe and stable operation of the circuit, when the detected current is greater than a preset overcurrent threshold, the control device also performs overcurrent protection on the electronic atomizing device. The preset overcurrent threshold is greater than the determination threshold, and its specific value can be set according to actual conditions.

[0046] In one embodiment, continue to refer to Figure 2 Before step S130, the method further includes step S120: after receiving a button wake-up command or an electromagnetic oscillation shutdown set duration, controlling the electromagnetic oscillation and power output circuit to start electromagnetic oscillation.

[0047] Specifically, when the electronic atomizing device has buttons, the user can control its start and stop via the buttons. Upon receiving a button wake-up command, the control device activates the electromagnetic oscillation and power output circuit, initiating electromagnetic oscillation and starting the electronic atomizing device. If the control device determines the presence of an atomizing medium based on the sampled current, the electronic atomizing device continues to operate; otherwise, it deactivates the electromagnetic oscillation and power output circuit.

[0048] When the e-cigarette device is a buttonless device, the control unit can automatically cycle through the start and stop of the e-cigarette device. After the e-cigarette device has shut down the electromagnetic oscillation for a set period, the control unit automatically starts the electromagnetic oscillation, and the e-cigarette device begins to work. When the control unit determines that there is an atomizing medium based on the sampling current, the e-cigarette device continues to work; if there is no atomizing medium, it controls the electromagnetic oscillation and power output circuit to shut down the electromagnetic oscillation.

[0049] Furthermore, in one embodiment, after step S150, the method further includes: after a preset delay, returning to the step of controlling the electromagnetic oscillation and power output circuit to start the electromagnetic oscillation, until the number of times the electromagnetic oscillation is turned off reaches a preset number.

[0050] Specifically, when the electronic atomizing device is detected to be without atomizing medium, after the control electromagnetic oscillation and power output circuit stop electromagnetic oscillation, the control device first analyzes whether the preset number of times the electromagnetic oscillation has been turned off has been reached. If the preset number of times the electromagnetic oscillation has been turned off has been reached, it waits for the next button press or the next automatic start. If the preset number of times the electromagnetic oscillation has been turned off has not been reached, a timer is started, and after the preset time has elapsed, the electromagnetic oscillation is restarted and the current is detected again. If the current detection indicates that there is atomizing medium, it operates normally; if the current detection indicates that there is no atomizing medium, the electromagnetic oscillation is turned off.

[0051] To better understand the above control method for electromagnetic heating appliances, the following explanation will use an electronic atomizing device as an example.

[0052] Existing electromagnetic electronic atomizing devices suffer from varying degrees of misjudgment of atomizing media, leading to problems such as high power consumption or hardware failure, resulting in a poor user experience. This application provides a scheme for fixed-frequency detection of atomizing media in electromagnetic electronic atomizing devices. The detection circuit and control method are simple, low-cost, highly accurate, and consistent. Power output can be stopped when no atomizing medium is detected, saving energy, reducing consumption, and extending the device's lifespan.

[0053] Specifically, such as Figure 3 As shown, for an electronic atomizing device with buttons, if a button wake-up command is received during the device's sleep state, the control device activates oscillation and determines whether there is an atomizing medium based on current detection. If there is an atomizing medium, the electronic atomizing medium continues to operate. If there is no atomizing medium, the control device deactivates oscillation and determines whether the number of times the electromagnetic oscillation has been deactivated is greater than a preset number n. If yes, the electronic atomizing device re-enters the device's sleep state; if no, the control device records an increase of 1 in the number of times the electromagnetic oscillation has been deactivated, and then reactivates oscillation after a preset delay t.

[0054] like Figure 4 As shown, for a buttonless electronic atomizing device, the control device starts oscillation after a set delay t2 from the last time it stopped working. It then checks the current to determine if there is an atomizing medium. If there is, the electronic atomizing medium continues to work. If there is no atomizing medium, the control device shuts off the oscillation and checks if the number of times the electromagnetic oscillation has been shut off is greater than the preset number n. If yes, the electronic atomizing device stops working, records the number of working times m+1, and starts working again after a set delay t2, restarting the oscillation. If no, the control device increases the number of times the electromagnetic oscillation has been shut off by 1, and restarts the oscillation after a preset delay t1.

[0055] The DC current obtained from current sampling varies depending on the alloy (or metal) material used in the appliance for heating the atomizing medium. When heating the atomizing medium using an appliance containing a Class 1 alloy (or metal), the DC current at the current sampling terminal is less than the no-load current. When heating the atomizing medium using an appliance containing a Class 2 alloy (or metal), the DC current at the current sampling terminal is greater than the no-load current. Based on this, in the product design definition, one material can be set as the standard material for heating the atomizing medium. When no atomizing medium is detected, power output can be stopped, saving energy, reducing consumption, and extending the appliance's lifespan.

[0056] If one material from category 1 is designated as the standard material, a threshold value of less than the no-load DC current (e.g., 80% of the DC current) can be set as the judgment threshold. The judgment is made by sampling the DC current analog value and using the set threshold. If the measured current value is less than the judgment threshold, it is determined that there is an atomizing medium; otherwise, it is determined that there is no atomizing medium. Simultaneously, to avoid mixing materials from categories 2, if the heating current is less than the judgment threshold corresponding to the standard material, and a discrepancy occurs in the current heating curve within a cumulative period (10s-30s) during heating, it is determined that there is no atomizing medium.

[0057] If one of the two materials is designated as the standard material, a threshold value greater than the no-load DC current (e.g., 120% of the DC current) can be set. The judgment is made by sampling the DC current analog value and using the set threshold. If the measured current value is greater than the threshold, it is determined that there is a fogging medium; otherwise, it is determined that there is no fogging medium. Simultaneously, to ensure the safe and stable operation of the circuit, overcurrent protection is implemented when the current exceeds a certain value.

[0058] The above control methods ensure accurate determination of both the electromagnetic heating material and the functionality of the medium within the appliance. This guarantees the compatibility between the medium and the appliance, as well as the heating rate. It avoids system instability or energy waste caused by the absence of a medium, improving system reliability and efficiency, extending appliance lifespan, reducing energy loss, and enhancing the customer experience.

[0059] Based on the same inventive concept, this application also provides an electromagnetic heating appliance control device for implementing the electromagnetic heating appliance control method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more embodiments of the electromagnetic heating appliance control device provided below can be found in the limitations of the electromagnetic heating appliance control method described above, and will not be repeated here.

[0060] In one embodiment, an electromagnetic heating appliance control device is also provided. The electromagnetic heating appliance can be an electronic atomizing device, a heating appliance, or other equipment that uses electromagnetic heating. Figure 5 As shown, the device includes: a data acquisition module 110, a medium detection module 120, and a heating control module 130, wherein:

[0061] The data acquisition module 110 is used to acquire the sampling current obtained by the current sampling device from the electromagnetic oscillation of the electromagnetic heater and the main circuit where the power output circuit is located.

[0062] The medium detection module 120 is used to detect whether the electromagnetic heater contains a medium based on the sampling current and preset judgment data.

[0063] The heating control module 130 is used to control the electromagnetic oscillation and power output circuit to stop the electromagnetic oscillation when the electromagnetic heating appliance is not containing a medium.

[0064] In one embodiment, the determination data includes a determination threshold, and the medium detection module 120 further determines the determination threshold based on the type of material used for medium heating.

[0065] In one embodiment, when the material used for heating the medium is a first type of material, the medium detection module 120 sets the determination threshold to be less than the DC current when the electromagnetic heater is in an unloaded state; when the electromagnetic heater contains a medium heated using the first type of material, the DC current in the main circuit is less than the DC current when the electromagnetic heater is in an unloaded state.

[0066] In one embodiment, the medium detection module 120 determines that the electromagnetic heater contains a medium when the sampling current is less than the determination threshold.

[0067] In one embodiment, when the material used for heating the medium is a second type of material, the medium detection module 120 sets the determination threshold to be greater than the DC current when the electromagnetic heater is in an unloaded state; when the electromagnetic heater contains a medium heated using the second type of material, the DC current in the main circuit is greater than the DC current when the electromagnetic heater is in an unloaded state.

[0068] In one embodiment, the medium detection module 120 determines that the electromagnetic heater contains a medium when the sampling current is greater than the determination threshold.

[0069] In one embodiment, after receiving a button wake-up command or an electromagnetic oscillation shutdown set duration, the heating control module 130 controls the electromagnetic oscillation and power output circuit to start electromagnetic oscillation.

[0070] In one embodiment, after a preset delay, the heating control module 130 controls the electromagnetic oscillation and power output circuit to start the electromagnetic oscillation again until the preset number of times the electromagnetic oscillation is turned off is reached.

[0071] Specific limitations regarding the control device for electromagnetic heating appliances can be found in the limitations of the control method for electromagnetic heating appliances described above, and will not be repeated here. Each module in the aforementioned control device for electromagnetic heating appliances can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device in hardware form, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0072] In one embodiment, an electromagnetic heating appliance is also provided, such as Figure 6 As shown, the device includes a current sampling device 210, a control device 220, and an electromagnetic oscillation and power output circuit 230. The current sampling device 210 is connected to the main circuit where the electromagnetic oscillation and power output circuit 230 is located, and the control device 220 is connected to the current sampling device 210 and the electromagnetic oscillation and power output circuit 230. The current sampling device 210 is used to detect the sampling current in the main circuit where the electromagnetic oscillation and power output circuit 230 is located, and sends the sampling current to the control device 220. The control device 220 is used to perform electromagnetic heating control according to the above method.

[0073] The control device 220 includes a controller 222 and a drive circuit 224. The controller 222 is connected to the current sampling device 210 and the drive circuit 224, and the drive circuit 224 is connected to the electromagnetic oscillation and power output circuit 230. Taking the drive circuit 224 as an example where an MCU is used, the current sampling device 210 obtains a current signal from the main circuit and amplifies it before outputting it to the MCU. When vibration needs to be activated, the MCU controls the drive circuit 224 to output a fixed-frequency PWM waveform to the electromagnetic oscillation and power output circuit 230. The electromagnetic oscillation and power output circuit 230 includes an oscillation circuit and a switch control circuit. When a medium with a metal heating element (such as a metal sheet) is placed in the electromagnetic coil of the oscillation circuit, the high-frequency oscillation generated by the circuit is induced on the metal sheet through the electromagnetic coil to achieve electromagnetic heating and power output. In addition, the electromagnetic heating element may also include a voltage sampling device 240 connected to the control device 220. The voltage sampling device 240 detects the voltage of the main circuit and sends the sampled voltage to the MCU. The MCU can also adjust the PWM waveform output by the drive circuit 224 based on the sampled voltage.

[0074] In the aforementioned electromagnetic heater, after the current sampling device 210 detects the sampling current in the main circuit where the electromagnetic oscillation and power output circuit of the electromagnetic heater is located, the control device 220 combines the sampling current and preset judgment data to detect whether the electromagnetic heater contains a medium. If the electromagnetic heater does not contain a medium, the control device 220 stops the electromagnetic oscillation and power output circuit 230 to avoid energy waste or device failure caused by the electromagnetic heater working without a medium, thereby improving the service life of the appliance, reducing energy loss, and improving the ease of use of the electromagnetic heater.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for controlling an electromagnetic heating appliance, characterized in that, include: The sampling current obtained by the current sampling device is detected by the electromagnetic oscillation and power output circuit of the electromagnetic heater; the electromagnetic heater is an electronic atomizing device, and the medium used is an atomizing medium. The method detects whether the electromagnetic heating appliance contains a medium based on the sampling current and preset judgment data; the judgment data includes a judgment threshold. Before detecting whether the electromagnetic heating appliance contains a medium based on the sampling current and preset judgment data, the method further includes: determining the judgment threshold based on the type of material used for heating the medium; the type of material used for heating the medium refers to the type of material selected for the appliance used to heat the medium. The step of detecting whether the electromagnetic heating appliance contains a medium based on the sampled current and preset judgment data specifically includes: when the material used to heat the medium is a first type of material, setting the judgment threshold to be less than the DC current when the electromagnetic heating appliance is in an unloaded state; when the electromagnetic heating appliance contains a medium heated using the first type of material, the DC current of the main circuit is less than the DC current when the electromagnetic heating appliance is in an unloaded state; if the sampled current is less than the judgment threshold, then the electromagnetic heating appliance contains a medium. When the material used to heat the medium is a second type of material, the determination threshold is set to be greater than the DC current when the electromagnetic heater is in an unloaded state; when the electromagnetic heater contains a medium heated using the second type of material, the DC current of the main circuit is greater than the DC current when the electromagnetic heater is in an unloaded state; if the sampling current is greater than the determination threshold, then the electromagnetic heater contains a medium. When the electromagnetic heater is not filled with a medium, the electromagnetic oscillation and power output circuit is controlled to stop the electromagnetic oscillation.

2. The electromagnetic heating appliance control method according to claim 1, characterized in that, Before the sampling current obtained by the current acquisition device from the main circuit where the electromagnetic oscillation and power output circuit of the electromagnetic heater is located is detected, it also includes: Upon receiving a button wake-up command or after a set duration of electromagnetic oscillation shutdown, the electromagnetic oscillation and power output circuit is controlled to start electromagnetic oscillation.

3. The electromagnetic heating appliance control method according to claim 2, characterized in that, After controlling the electromagnetic oscillation and power output circuit to stop electromagnetic oscillation when the electromagnetic heater is not containing a medium, the method further includes: after a preset delay, returning to the step of controlling the electromagnetic oscillation and power output circuit to start electromagnetic oscillation, until the number of times electromagnetic oscillation is turned off reaches a preset number.

4. A control device for an electromagnetic heating appliance, characterized in that, include: The data acquisition module is used to acquire the sampling current detected by the current sampling device in the main circuit of the electromagnetic heating appliance's electromagnetic oscillation and power output circuit; the electromagnetic heating appliance is an electronic atomizing device, and the medium used is an atomizing medium. The medium detection module is used to detect whether the electromagnetic heater contains a medium based on the sampling current and preset judgment data. The determination data includes a determination threshold. The medium detection module is also used to: determine the determination threshold based on the type of material used for medium heating; the type of material used for medium heating refers to the type of material selected by the appliance used to heat the medium. The medium detection module is specifically used to: when the material used to heat the medium is a first type of material, set the determination threshold to be less than the DC current when the electromagnetic heater is in an unloaded state; when the electromagnetic heater contains a medium heated using the first type of material, the DC current of the main circuit is less than the DC current when the electromagnetic heater is in an unloaded state; if the sampling current is less than the determination threshold, then the electromagnetic heater contains a medium. When the material used to heat the medium is a second type of material, the determination threshold is set to be greater than the DC current when the electromagnetic heater is in an unloaded state; when the electromagnetic heater contains a medium heated using the second type of material, the DC current of the main circuit is greater than the DC current when the electromagnetic heater is in an unloaded state; if the sampling current is greater than the determination threshold, then the electromagnetic heater contains a medium. The heating control module is used to control the electromagnetic oscillation and power output circuit to stop electromagnetic oscillation when the electromagnetic heating appliance is not containing a medium.

5. An electromagnetic heating appliance, characterized in that, The device includes a control unit, a current sampling unit, and an electromagnetic oscillation and power output circuit. The current sampling unit is connected to the main circuit containing the electromagnetic oscillation and power output circuit. The control unit is connected to the current sampling unit and the electromagnetic oscillation and power output circuit. The current sampling unit is used to detect and obtain a sampled current in the main circuit containing the electromagnetic oscillation and power output circuit, and sends the sampled current to the control unit. The control unit is used to perform electromagnetic heating control according to any one of claims 1-3.

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