Heating apparatus and control method and apparatus therefor, and readable storage medium and cooking device

Abstract

The present application relates to the technical field of cooking devices. Provided are a heating apparatus and a control method and apparatus therefor, and a readable storage medium and a cooking device. The heating apparatus comprises: a coil assembly, which comprises a first coil and a second coil which are connected in parallel, wherein the resistance value of the first coil is different from the resistance value of the second coil; a power supply circuit, which is configured to supply power to the coil assembly; a switch assembly, which is connected between the power supply circuit and the coil assembly; and a control circuit, which is connected to a control end of the switch assembly, wherein the control circuit is configured to control at least one of the first coil and the second coil by means of the switch assembly to perform electromagnetic heating, or control the first coil to perform resistance heating. The heating assembly in the present application can perform electromagnetic heating and resistance heating on cookware having a high magnetic permeability, and can also perform resistance heating on cookware having a low magnetic permeability, such that the heating apparatus can have better heating effects on different types of cookware, thereby improving the universality of the heating apparatus.

Description

Heating device, control method thereof, device, readable storage medium and cooking equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on November 29, 2023, with application number "202311611817.8" and application name "Heating device and its control method, device, readable storage medium and cooking equipment", the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of cooking equipment, and in particular to a heating device and a control method, device, readable storage medium and cooking equipment thereof. Background Art

[0003] Induction cookers use the principle of electromagnetic induction to heat pots, and have the advantages of environmental protection, energy saving, efficient heating and safety.

[0004] In the related art, the coil disk in the induction cooker has high requirements for the adaptability of the cookware. The coil disk cannot heat the cookware made of low magnetic permeability materials, which reduces the versatility of the induction cooker.

[0005] Application Contents

[0006] This application aims to solve one of the technical problems existing in the prior art or related technologies.

[0007] To this end, a first aspect of the present application provides a heating device.

[0008] A second aspect of the present application provides a method for controlling a heating device.

[0009] A third aspect of the present application provides a control device for a heating device.

[0010] A fourth aspect of the present application provides a control device for a heating device.

[0011] A fifth aspect of the present application provides a readable storage medium.

[0012] A sixth aspect of the present application provides a cooking device.

[0013] In view of this, according to the first aspect of the present application, a heating device is proposed, including: a coil assembly, the coil assembly including a first coil and a second coil connected in parallel, the resistance value of the first coil is different from the resistance value of the second coil; a power supply circuit, used to supply power to the coil assembly; a switch assembly, connected between the power supply circuit and the coil assembly; a control circuit, connected to the control end of the switch assembly, the control circuit is used to control at least one of the first coil and the second coil to perform electromagnetic heating, or control the first coil to perform resistance heating through the switch assembly.

[0014] In this technical solution, the heating device includes a coil assembly, a power supply circuit, a switch assembly, and a control circuit. The coil assembly includes a first coil and a second coil connected in parallel, with the first coil and the second coil having different resistance values. The power supply circuit is capable of supplying power to the coil assembly, and the switch assembly is disposed between the power supply circuit and the coil assembly. The control circuit controls the on / off state of the switch assembly to adjust whether the first coil is connected to the power supply circuit, and whether the second coil is connected to the power supply circuit, thereby selecting the first coil and / or the second coil to heat the cookware.

[0015] In this technical solution, the coil assembly also includes a resonant capacitor, and both the first coil and the second coil can oscillate with the resonant capacitor to generate a magnetic field, thereby electromagnetically heating the metal cookware with high magnetic permeability.

[0016] It should be noted that electromagnetic heating using the coil described above is suitable for cookware made of metal with high magnetic permeability. However, it is completely ineffective against cookware with lower magnetic permeability, such as non-metallic cookware, including ceramic pots, casseroles, and glass pots. This results in the limited versatility of induction heating devices. Since electromagnetic heating of low-permeability cookware cannot be achieved through coil resonance, the drive circuit's drive frequency is adjusted to allow the coil to heat the cookware through resistive heating.

[0017] In this technical solution, when energized, the first and second coils can generate heat due to their own resistance, thereby performing resistance heating on the cookware. The resistance of the first coil is different from that of the second coil. When the heating device heats the cookware through resistance heating, the coil with the greater resistance between the first and second coils can be selected for resistance heating.

[0018] It should be noted that the resistance value is the equivalent resistance when the coil is energized, which includes the DC resistance of the coil and the high-frequency impedance of the coil.

[0019] In the technical solution of the present application, a coil assembly including a first coil and a second coil with different resistance values ​​is provided in the heating device, and a switch assembly capable of controlling the power-on state of the first coil and the second coil and the power supply circuit is correspondingly provided. The control circuit can control the power-on state of the first coil and the second coil, as well as the driving frequency, so as to achieve the goal of controlling at least one of the first coil and the second coil to perform electromagnetic heating on the cookware, and also controlling the first coil to perform resistance heating on the cookware. This enables the heating assembly to perform both electromagnetic heating and resistance heating on cookware with high magnetic permeability, and also to perform resistance heating on cookware with low magnetic permeability. This enables the heating device to have a good heating effect on different types of cookware, thereby improving the versatility of the heating device.

[0020] In some technical solutions, optionally, the resistance value of the first coil is greater than the resistance value of the second coil.

[0021] In this technical solution, the resistance value of the first coil is R1, and the resistance value of the second coil is R2, wherein R1>R2. When the heating device performs electromagnetic heating on the cookware through the coil assembly, at least one of the first coil and the second coil can be selected for electromagnetic heating.

[0022] It should be noted that when the required electromagnetic heating power is small, you can choose to drive only the second coil with a smaller resistance value for electromagnetic heating. When the required electromagnetic heating power is large, you can choose to drive the first coil and the second coil synchronously for electromagnetic heating.

[0023] In this technical solution, when the heating device performs resistance heating on the cookware through the coil assembly, since the resistance value of the first coil is greater than the resistance value of the second coil, under the same driving current, the heating efficiency of the first coil is higher than the heating effect of the second coil, so the first coil with a higher resistance value is selected for resistance heating.

[0024] In the technical solution of the present application, by setting the resistance value of the first coil to be greater than the resistance value of the second coil, the heating device can select the first coil with a larger resistance value to perform resistance heating on the cookware when performing resistance heating on the cookware. When the heating device performs electromagnetic heating on the cookware, the first coil and the second coil can be selected to perform electromagnetic heating on the cookware simultaneously according to actual needs, or the second coil with a smaller resistance value can be selected to heat the cookware. While ensuring heating efficiency, power consumption can also be reduced.

[0025] In some technical solutions, the switch assembly includes:

[0026] a first switch element connected between the second coil and the power supply circuit;

[0027] The control circuit is specifically used to control the first switch to be disconnected so that the first coil performs resistance heating, or to control the first switch to be connected so that the first coil and the second coil perform electromagnetic heating synchronously.

[0028] In this technical solution, the switch assembly includes a first switch element connected between the second coil and the power supply circuit. The first switch element can control whether the second coil is connected to the power supply circuit. Specifically, the first end of the first switch element is connected to the power supply circuit, and the second end of the first switch element is connected to the second coil.

[0029] In this technical solution, by controlling the first switch element to be in the on state, the first coil and the second coil are both connected to the power supply circuit, and the first coil and the second coil can be synchronously driven by the power supply circuit.

[0030] In this technical solution, when the first switch is controlled to be in the off state, only the first coil is connected to the power supply circuit, and only the first coil can be driven by the power supply circuit.

[0031] For example, when performing resistance heating on a cookware with high magnetic permeability, the first switch is controlled to be in an off state. At this time, only the first coil with a larger resistance value is connected to the power supply circuit. The first coil is energized to generate self-heating, thereby performing resistance heating on the cookware.

[0032] In the technical solution of the present application, a first switch is provided between the second coil and the power supply circuit, and when the heating device performs electromagnetic heating on the cookware through the coil assembly, the first switch is controlled to be turned on, so that the second coil with smaller resistance performs electromagnetic heating on the cookware; when the heating device performs resistance heating on the cookware through the coil assembly, the first switch is controlled to be turned off, so that only the first coil with larger resistance performs resistance heating on the cookware, thereby further improving the heating efficiency.

[0033] In some technical solutions, the switch assembly further includes:

[0034] a second switch element connected between the first coil and the power supply circuit;

[0035] The control circuit is specifically used to control the first switch element and the second switch element to be turned on, so that both the first coil and the second coil are electromagnetically heated; or

[0036] The control circuit is specifically used to control the first switch element to be turned on and the second switch element to be turned off, so that the second coils are all electromagnetically heated.

[0037] In this technical solution, the switch assembly further includes a second switch connected between the first coil and the power supply circuit. The second switch controls whether the first coil is connected to the power supply circuit. Specifically, a first end of the second switch is connected to the power supply circuit, and a second end of the second switch is connected to the first coil.

[0038] In this technical solution, by controlling the first and second switch elements to be in an on state, the first and second coils are connected to the power supply circuit, which can drive the first and second coils synchronously. When the heating device is required to perform high-power electromagnetic heating on the cookware, the first and second coils are used to synchronously heat the cookware.

[0039] In this technical solution, by controlling the first switch to be in the off state and the second switch to be in the on state, only the second coil is connected to the power supply circuit, and the power supply circuit can drive only the second coil. When the heating device needs to perform low-power electromagnetic heating on the cookware, the cookware is electromagnetically heated only by the second coil.

[0040] In the technical solution of this application, a first switch is provided between the second coil and the power supply circuit, and a second switch is provided between the first coil and the power supply circuit. When the heating device performs high-power electromagnetic heating on the cookware through the coil assembly, the first switch and the second switch are controlled to be turned on simultaneously, so that the first and second coils simultaneously perform electromagnetic heating on the cookware, thereby improving heating efficiency. When the heating device performs low-power electromagnetic heating on the cookware through the coil assembly, the first switch is controlled to be turned on and the second switch is turned off, so that only the second coil with lower resistance performs electromagnetic heating on the cookware, thereby reducing heating power consumption.

[0041] In some technical solutions, the control circuit optionally includes: a controller, a first power supply, and a zero-crossing detection circuit. The controller is connected to the power supply circuit and the control terminal of the switch assembly; the first power supply is connected to the controller for supplying power to the controller; and the zero-crossing detection circuit is connected to the controller for detecting a zero-crossing point of a voltage output by the power supply circuit.

[0042] In this technical solution, a controller is used to control the power supply circuit, thereby controlling the resonant frequency of the coil assembly. The first power supply is a low-voltage power supply that converts the high-voltage signal in the power supply circuit into a low-voltage signal to power the controller. A zero-crossing detection module is used to detect the zero-crossing point of the voltage in the power supply circuit and, based on this point, to control the on / off state of the high-frequency switching element in the power supply circuit, thereby reducing noise generated when the coil assembly resonates.

[0043] In this technical solution, the controller is also used to control the on and off state of the switch component.

[0044] In some technical solutions, the power supply circuit optionally includes: a second power supply, a filter circuit, a rectifier circuit, and an inverter switch circuit. A first end of the filter circuit is connected to an output end of the second power supply, and a second end of the filter circuit is connected to the control circuit; a first end of the rectifier circuit is connected to a second end of the filter circuit; and the inverter switch circuit is connected between the second end of the rectifier circuit and the coil assembly.

[0045] In this technical solution, the power supply assembly includes a second power supply, which is an AC power supply. A filter circuit is connected to the second power supply and is capable of filtering the AC power output by the second power supply. The filtered AC power is transmitted to the control assembly for powering the control assembly. A rectifier circuit is connected between the filter circuit and the inverter switch circuit and rectifies the AC power signal transmitted to the inverter switch circuit to form a DC power signal. The inverter switch circuit is a high-frequency inverter switch component that can convert the rectified DC power into a high-frequency AC power signal for transmission to the resonant capacitor and coil assembly.

[0046] It should be noted that the inverter switching circuit can be a high-frequency switching element. The inverter switching circuit is connected to a controller in the control circuit, which can control the inverter switching circuit to perform high-frequency switching. By adjusting the switching frequency of the inverter switching circuit and the on / off state of the switch component, the coil assembly is controlled to perform electromagnetic heating through at least one of the first coil and the second coil, or to control the first coil to perform resistive heating.

[0047] In the technical solution of the present application, by arranging a second power supply, a filtering circuit, a rectifier circuit and an inverter switching circuit in the power supply component, the power supply component can provide stable power supply to the coil component, the resonant capacitor and the control component, thereby improving the stability of the operation of the heating device.

[0048] In some technical solutions, optionally, the number of the first coils is at least two, and / or the number of the second coils is at least two.

[0049] In the technical solution of the present application, the number of the first coils and the number of the second coils can both be multiple, thereby improving the heating efficiency of the cookware when performing resistance heating and the heating efficiency of the cookware when performing electromagnetic heating.

[0050] In some technical solutions, the wire bundle of the first coil and the wire bundle of the second coil are wound in parallel.

[0051] In this technical solution, the wire bundle in the first coil is coiled and formed, and the wire bundle in the second coil is also coiled and formed, specifically, it can be spirally coiled or rotary coiled. The spirally coiled first coil and second coil can form an annular or circular heating area.

[0052] On this basis, the first and second coils are wound in parallel in the same direction. That is, the wire bundles in the first coil and the wire bundles in the second coil are arranged side by side in the same direction and in the same winding direction. Taking the spiral winding of the first and second coils as an example, the second coil is inserted into the gaps between the turns of the first coil, forming the first and second coils with the same winding direction and nested inside and outside.

[0053] By winding the first coil and the second coil in parallel, the heating area generated by the first coil can at least partially overlap with the heating area generated by the second coil, so that a single area on the cooking device can meet the electromagnetic heating requirements and the thermal radiation heating requirements at the same time, eliminating the need for users to distinguish heating areas and select the material of the cooking device, thereby achieving the technical effect of optimizing the coil disk structure layout, improving the practicality of the coil disk, and enhancing the user experience.

[0054] According to the second aspect of the present application, a control method for a heating device is proposed, which is applied to the heating device in any of the above-mentioned technical solutions. The control method for the heating device includes: obtaining heating information; according to the heating information, controlling at least one of the first coil and the second coil to perform electromagnetic heating through a switch component, or controlling the first coil to perform resistance heating.

[0055] In this technical solution, the heating information refers to the heating information generated by the heating device using the coil assembly to heat the cookware. Based on this heating information, a heating method for the coil assembly to heat the cookware can be selected. The heating methods include electromagnetic heating using at least one of the first and second coils in the coil assembly, and resistance heating using only the first coil.

[0056] In the technical solution of the present application, a coil assembly including a first coil and a second coil having different resistance values ​​is provided in the heating device. By controlling the energization state and driving frequency of the first coil and the second coil, it is possible to control at least one of the first coil and the second coil to perform electromagnetic heating on the cookware, or to control the first coil to perform resistance heating on the cookware. This enables the heating assembly to perform both electromagnetic and resistance heating on cookware with high magnetic permeability, as well as resistance heating on cookware with low magnetic permeability. This enables the heating device to achieve good heating effects on different types of cookware, thereby improving the versatility of the heating device.

[0057] In some technical solutions, optionally, the heating information includes a cooking stage;

[0058] According to the heating information, controlling at least one of the first coil and the second coil to perform electromagnetic heating, or controlling the first coil to perform resistance heating, through the switch assembly, includes:

[0059] Based on the cooking stage being a preheating stage, controlling the first coil to perform resistance heating through the switch assembly; or

[0060] Based on the cooking stage being a heating stage, at least one of the first coil and the second coil is controlled by the switch assembly to perform electromagnetic heating.

[0061] In this technical solution, heating information includes cooking stages, which include but are not limited to a preheating stage and a heating stage. The preheating stage is the stage for uniformly preheating the cookware, and the heating stage requires a lower heating rate. The heating stage is the stage for rapidly heating the ingredients in the cookware, and the heating stage requires a higher heating rate.

[0062] In this technical solution, when the cooking phase is determined to be the preheating phase, the switch assembly is controlled to connect the first coil (with a higher resistance) to the power circuit and disconnect the second coil (with a lower resistance) from the power circuit. This allows the cookware to be heated by resistance only via the first coil. Because the resistance of the first coil is greater than that of the second coil, the first coil's heating efficiency is higher than that of the second coil at the same drive current, so the first coil with a higher resistance is selected for resistance heating.

[0063] In this technical solution, when it is determined that the cooking stage is the heating stage, the on-off state of the switch component is controlled so that the first coil with higher resistance and the second coil with lower resistance are both connected to the power supply circuit, that is, the cookware is electromagnetically heated synchronously by the first coil and the second coil.

[0064] It should be noted that the heating device can obtain a heating control instruction and determine the current cooking stage based on the heating control instruction.

[0065] In the technical solution of this application, the heating information includes cooking stages. In different control stages, the cookware is heated using different heating methods. During the preheating stage, the requirements for heating efficiency of the cookware are lower, but heating uniformity is higher. Therefore, only the first coil with a higher resistance value is used to heat the cookware with resistance. During the heating stage, when the heating efficiency of the cookware is higher, electromagnetic heating is performed using at least one of the first coil and the second coil to improve heating efficiency.

[0066] In some technical solutions, optionally, the heating device is used to heat the cookware, and the heating information includes the type of cookware;

[0067] According to the heating information, controlling at least one of the first coil and the second coil to perform electromagnetic heating, or controlling the first coil to perform resistance heating, through the switch assembly, includes:

[0068] Based on the cookware being of the first type, controlling at least one of the first coil and the second coil to perform electromagnetic heating through the switch assembly; or

[0069] Based on the cookware type being the second type, the first coil is controlled by the switch assembly to perform resistance heating.

[0070] In this technical solution, the heating information includes the type of cookware. Different cookware types are suitable for different heating methods. When the cookware type is the first type, electromagnetic heating is selected through the coil assembly. When the cookware type is the second type, resistance heating is selected through the coil assembly.

[0071] In this technical solution, when the type of cookware is determined to be the first type, the on-off state of the switch component is controlled so that the first coil with higher resistance and the second coil with lower resistance are both connected to the power supply circuit, that is, the cookware is electromagnetically heated synchronously by the first coil and the second coil.

[0072] In this technical solution, when the cookware is determined to be of the second type, the switch assembly is controlled to switch on and off, connecting the first coil (with a higher resistance) to the power supply circuit and disconnecting the second coil (with a lower resistance). This allows the cookware to be heated only by the first coil. Because the resistance of the first coil is greater than that of the second coil, the first coil's heating efficiency is higher than that of the second coil at the same drive current, so the first coil with a higher resistance is selected for resistance heating.

[0073] In the technical solution of this application, the heating information includes the type of cookware. When the heating device is required to heat different types of cookware, the cookware is heated using different heating methods. If the cookware is of the first type with high magnetic permeability, electromagnetic heating is performed using at least one of the first coil and the second coil, improving heating efficiency. If the cookware is of the second type with low magnetic permeability, resistance heating is performed only using the first coil with a higher resistance value. This enables the heating device to heat different types of cookware, improving its versatility.

[0074] According to the third aspect of the present application, a control device for a heating device is proposed, which is applied to the heating device in any of the above-mentioned technical solutions. The control device of the heating device includes: an acquisition module for acquiring heating information; a control module for controlling at least one of the first coil and the second coil to perform electromagnetic heating, or controlling the first coil to perform resistance heating, through a switch component according to the heating information.

[0075] In this technical solution, the heating information refers to the heating information generated by the heating device using the coil assembly to heat the cookware. Based on this heating information, a heating method for the coil assembly to heat the cookware can be selected. The heating methods include electromagnetic heating using at least one of the first and second coils in the coil assembly, and resistance heating using only the first coil.

[0076] In the technical solution of the present application, a coil assembly including a first coil and a second coil having different resistance values ​​is provided in the heating device. By controlling the energization state and driving frequency of the first coil and the second coil, it is possible to control at least one of the first coil and the second coil to perform electromagnetic heating on the cookware, or to control the first coil to perform resistance heating on the cookware. This enables the heating assembly to perform both electromagnetic and resistance heating on cookware with high magnetic permeability, as well as resistance heating on cookware with low magnetic permeability. This enables the heating device to achieve good heating effects on different types of cookware, thereby improving the versatility of the heating device.

[0077] According to the fourth aspect of the present application, a control device for a heating device is proposed, comprising: a memory, in which a program or instruction is stored; a processor, which executes the program or instruction stored in the memory 604 to implement the steps of the control method for the heating device in any technical solution, thereby having all the beneficial technical effects of the control method for the heating device in any of the above-mentioned technical solutions, and no further details will be given here.

[0078] According to a fifth aspect of the present application, a readable storage medium is provided. The readable storage medium stores a program or instructions. When executed by a processor, the program or instructions implement the steps of the heating device control method described in any of the above technical solutions. Therefore, all the beneficial technical effects of the heating device control method described in any of the above technical solutions are achieved, and further details will not be given here.

[0079] According to a sixth aspect of the present application, a cooking device is provided, comprising: a heating device according to any of the aforementioned technical solutions; and / or a control device including the heating device according to any of the aforementioned technical solutions; and / or a readable storage medium according to any of the aforementioned technical solutions. Therefore, all the beneficial technical effects of the heating device according to any of the aforementioned technical solutions; and / or the control device including the heating device according to any of the aforementioned technical solutions; and / or the readable storage medium according to any of the aforementioned technical solutions are achieved, and no further elaboration is required here.

[0080] Additional aspects and advantages of the present application will become apparent in the following description or may be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0082] FIG1 shows one of the circuit diagrams of a heating device provided in some embodiments of the present application;

[0083] FIG2 shows a second circuit diagram of a heating device provided in some embodiments of the present application;

[0084] FIG3 shows a schematic structural diagram of a first coil and a second coil provided in some embodiments of the present application;

[0085] FIG4 shows a flow chart of a method for controlling a heating device according to some embodiments of the present application;

[0086] FIG5 shows one of the structural block diagrams of a control device for a heating device provided in some embodiments of the present application;

[0087] FIG6 shows a second structural block diagram of the control of the heating device provided in some embodiments of the present application;

[0088] FIG7 shows a structural block diagram of a cooking device provided in some embodiments of the present application.

[0089] The reference numerals in Figures 1 to 3 are as follows: 100 heating device, 110 coil assembly, L1 first coil, L2 second coil, 120 power supply circuit, 122 second power supply, 124 filtering circuit, 126 rectifier circuit, 128 inverter switching circuit, 130 switch assembly, 132 first switch element, 134 second switch element, 140 control circuit, 142 controller, 144 first power supply, 146 zero-crossing detection circuit. DETAILED DESCRIPTION

[0090] In order to more clearly understand the above-mentioned objectives, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the features of this embodiment and the embodiments can be combined with each other.

[0091] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0092] The following describes a heating device and a control method, device, readable storage medium, and cooking equipment according to some embodiments of the present application with reference to Figures 1 to 7.

[0093] According to one embodiment of the present application, as shown in FIG. 1 and FIG. 2 , a heating device 100 is proposed, including: a coil assembly 110 , a power supply circuit 120 , a switch assembly 130 and a control circuit 140 .

[0094] In which, the coil assembly 110 includes a first coil L1 and a second coil L2 connected in parallel, and the resistance value of the first coil L1 is different from the resistance value of the second coil L2; the power supply circuit 120 is used to supply power to the coil assembly 110; the switch assembly 130 is connected between the power supply circuit 120 and the coil assembly 110; the control circuit 140 is connected to the control end of the switch assembly 130, and the control circuit 140 is used to control at least one of the first coil L1 and the second coil L2 to perform electromagnetic heating through the switch assembly 130, or to control the first coil L1 to perform resistance heating.

[0095] In this embodiment, the heating device 100 includes a coil assembly 110, a power supply circuit 120, a switch assembly 130, and a control circuit 140. The coil assembly 110 includes a first coil L1 and a second coil L2 connected in parallel, and the first coil L1 and the second coil L2 have different resistance values. The power supply circuit 120 can supply power to the coil assembly 110. The switch assembly 130 is disposed between the power supply circuit 120 and the coil assembly 110. The control circuit 140 can adjust whether the first coil L1 is connected to the power supply circuit 120 and whether the second coil L2 is connected to the power supply circuit 120 by controlling the on / off state of the switch assembly 130, thereby selecting the first coil L1 and / or the second coil L2 to heat the cookware.

[0096] For example, the power supply assembly includes a high-frequency switching element, such as an inverter switching element, specifically an IGBT (Insulated Gate Bipolar Transistor) switching element or a MOS (Metal Oxide Semiconductor) switching element. The high-frequency switching element performs a high-frequency switching operation, causing the first coil L1 and the second coil L2 in the coil assembly 110 to oscillate with the resonant capacitor to generate a magnetic field to electromagnetically heat the cookware.

[0097] In this embodiment, the coil assembly 110 further includes a resonant capacitor. The first coil L1 and the second coil L2 can both oscillate with the resonant capacitor to generate a magnetic field, thereby electromagnetically heating the metal cookware with high magnetic permeability.

[0098] It should be noted that electromagnetic heating using the coil described above is suitable for cookware made of metal with high magnetic permeability. However, it is completely ineffective against cookware with lower magnetic permeability, such as non-metallic cookware, including ceramic pots, casseroles, and glass pots. This results in the limited versatility of induction heating devices. Since electromagnetic heating of low-permeability cookware cannot be achieved through coil resonance, the drive circuit's drive frequency is adjusted to allow the coil to heat the cookware through resistive heating.

[0099] In this embodiment, when energized, the first coil L1 and the second coil L2 can generate heat due to their own resistance, thereby performing resistance heating on the cookware. The resistance of the first coil L1 is different from the resistance of the second coil L2. When the heating device 100 heats the cookware via resistance heating, the coil with the greater resistance of the first coil L1 or the second coil L2 can be selected for resistance heating.

[0100] For example, the resistance of the first coil L1 is greater than that of the second coil L2. When resistance heating of the cookware is required, the switch assembly 130 is controlled to be on or off, so that the first coil L1 (with a higher resistance) is connected to the power supply circuit 120. Power is supplied to the first coil L1 via the power supply circuit 120, and the cookware is heated by self-heating of the first coil L1. Due to the higher resistance of the first coil L1, the self-heating efficiency is higher than when the second coil L2 is connected to the power supply circuit 120.

[0101] It should be noted that the resistance value is the equivalent resistance when the coil is energized, which includes the DC resistance of the coil and the high-frequency impedance of the coil.

[0102] In the embodiment of the present application, a coil assembly 110 including a first coil L1 and a second coil L2 having different resistance values ​​is provided in the heating device 100, and a switch assembly 130 capable of controlling the power-on state of the first coil L1 and the second coil L2 and the power supply circuit 120 is correspondingly provided. The control circuit 140 is capable of controlling the power-on state of the first coil L1 and the second coil L2, as well as the driving frequency, so as to achieve the ability to control at least one of the first coil L1 and the second coil L2 to perform electromagnetic heating on the cookware, and also to control the first coil L1 to perform resistance heating on the cookware. This enables the heating assembly to perform both electromagnetic heating and resistance heating on cookware with high magnetic permeability, and also to perform resistance heating on cookware with low magnetic permeability. This enables the heating device 100 to have a good heating effect on different types of cookware, thereby improving the versatility of the heating device 100.

[0103] In some embodiments, optionally, the resistance value of the first coil L1 is greater than the resistance value of the second coil L2.

[0104] In this embodiment, the resistance value of the first coil L1 is R1, and the resistance value of the second coil L2 is R2, wherein R1>R2. When the heating device 100 performs electromagnetic heating on the cookware through the coil assembly 110, at least one of the first coil L1 and the second coil L2 can be selected for electromagnetic heating.

[0105] For example, when electromagnetic heating is performed on a cookware with high magnetic permeability, the first coil L1 and the second coil L2 are connected to the power supply circuit 120 by controlling the on / off state of the switch component, and the first coil L1 and the second coil L2 are driven to oscillate with the resonant capacitor at a preset frequency to generate a magnetic field, thereby electromagnetically heating the cookware with high magnetic permeability.

[0106] For example, when electromagnetic heating is performed on a cookware with high magnetic permeability, only the second coil L2 with a smaller resistance value is connected to the power supply circuit 120 by controlling the on / off state of the switch component, and the second coil L2 and the resonant capacitor are driven to oscillate at a preset frequency to generate a magnetic field, thereby electromagnetically heating the cookware with high magnetic permeability.

[0107] It should be noted that when the required electromagnetic heating power is small, you can choose to drive only the second coil L2 with a smaller resistance value for electromagnetic heating. When the required electromagnetic heating power is large, you can choose to synchronously drive the first coil L1 and the second coil L2 for electromagnetic heating.

[0108] In this embodiment, when the heating device 100 performs resistance heating on the cookware through the coil assembly 110, since the resistance value of the first coil L1 is greater than the resistance value of the second coil L2, under the same driving current, the heating efficiency of the first coil L1 is higher than the heating effect of the second coil L2, so the first coil L1 with a higher resistance value is selected for resistance heating.

[0109] In the embodiment of the present application, by setting the resistance value of the first coil L1 to be greater than the resistance value of the second coil L2, the heating device 100 can select the first coil L1 with a larger resistance value to perform resistance heating on the cookware. When the heating device 100 performs electromagnetic heating on the cookware, the first coil L1 and the second coil L2 can be selected to perform electromagnetic heating on the cookware simultaneously according to actual needs, or the second coil L2 with a smaller resistance value can be selected to heat the cookware. While ensuring heating efficiency, power consumption can also be reduced.

[0110] As shown in FIG. 1 , in some embodiments, the switch assembly 130 includes:

[0111] A first switch 132 is connected between the second coil L2 and the power supply circuit 120;

[0112] The control circuit 140 is specifically configured to control the first switch 132 to be disconnected so that the first coil L1 performs resistance heating, or to control the first switch 132 to be connected so that the first coil L1 and the second coil L2 perform electromagnetic heating synchronously.

[0113] In this embodiment, the switch assembly 130 includes a first switch element 132 connected between the second coil L2 and the power supply circuit 120. The first switch element 132 can control whether the second coil L2 is connected to the power supply circuit 120. Specifically, a first end of the first switch element 132 is connected to the power supply circuit 120, and a second end of the first switch element 132 is connected to the second coil L2.

[0114] Exemplarily, a first end of the first switch element 132 is connected to a high-frequency switch element in the power supply circuit 120 .

[0115] In this embodiment, by controlling the first switch 132 to be in the on state, the first coil L1 and the second coil L2 are both connected to the power supply circuit 120 , and the first coil L1 and the second coil L2 can be synchronously driven by the power supply circuit 120 .

[0116] For example, when electromagnetic heating is performed on a cookware with high magnetic permeability, the first switch 132 is controlled to be in the on state, so that the first coil L1 and the second coil L2 are synchronously connected to the power supply circuit 120, and the first coil L1 and the second coil L2 are driven at a preset frequency to oscillate with the resonant capacitor to generate a magnetic field, thereby electromagnetically heating the cookware with high magnetic permeability.

[0117] In this embodiment, when the first switch element 132 is controlled to be in an off state, only the first coil L1 is connected to the power supply circuit 120 , and only the first coil L1 can be driven by the power supply circuit 120 .

[0118] For example, when performing resistance heating on a cookware with high magnetic permeability, the first switch 132 is controlled to be in the off state. At this time, only the first coil L1 with a larger resistance value is connected to the power supply circuit 120. The first coil L1 is energized to generate self-heating, thereby performing resistance heating on the cookware.

[0119] In the embodiment of the present application, a first switch 132 is provided between the second coil L2 and the power supply circuit 120, and when the heating device 100 performs electromagnetic heating on the cookware through the coil assembly 110, the first switch 132 is controlled to be turned on, so that the second coil L2 with a smaller resistance performs electromagnetic heating on the cookware. When the heating device 100 performs resistance heating on the cookware through the coil assembly 110, the first switch 132 is controlled to be turned off, so that only the first coil L1 with a larger resistance performs resistance heating on the cookware, thereby further improving the heating efficiency.

[0120] As shown in FIG2 , in some embodiments, the switch assembly 130 further includes:

[0121] The second switch 134 is connected between the first coil L1 and the power supply circuit 120;

[0122] The control circuit 140 is specifically used to control the first switch 132 and the second switch 134 to be turned on, so that both the first coil L1 and the second coil L2 are electromagnetically heated; or

[0123] The control circuit 140 is specifically configured to control the first switch 132 to be turned on and the second switch 134 to be turned off, so that the second coil L2 is subjected to electromagnetic heating.

[0124] In this embodiment, the switch assembly further includes a second switch 134 connected between the first coil L1 and the power supply circuit 120. The second switch 134 can control whether the first coil L1 is connected to the power supply circuit 120. Specifically, a first end of the second switch 134 is connected to the power supply circuit 120, and a second end of the second switch 134 is connected to the first coil L1.

[0125] Exemplarily, a first end of the second switch element 134 is connected to a high-frequency switch element in the power supply circuit 120 .

[0126] In this embodiment, by controlling the first switch 132 and the second switch 134 to be in an on state, the first coil L1 and the second coil L2 are both connected to the power supply circuit 120, and the first coil L1 and the second coil L2 are driven synchronously by the power supply circuit 120. When the heating device 100 is required to perform high-power electromagnetic heating on the cookware, the cookware is electromagnetically heated synchronously by the first coil L1 and the second coil L2.

[0127] For example, when high-power electromagnetic heating is performed on a cookware with high magnetic permeability, the first switch element 132 and the second switch element 134 are controlled to be in the on state, so that the first coil L1 and the second coil L2 are synchronously connected to the power supply circuit 120, and the first coil L1 and the second coil L2 are driven at a preset frequency to oscillate with the resonant capacitor to generate a magnetic field, thereby performing high-power electromagnetic heating on the cookware with high magnetic permeability.

[0128] In this embodiment, by controlling the first switch 132 to be in the off state and the second switch 134 to be in the on state, only the second coil L2 is connected to the power supply circuit 120, and only the second coil L2 can be driven by the power supply circuit 120. When the heating device 100 is required to perform low-power electromagnetic heating on the cookware, the cookware is electromagnetically heated only by the second coil L2.

[0129] For example, when low-power electromagnetic heating is performed on a cookware with high magnetic permeability, the first switch 132 is controlled to be in an off state, so that the first coil L1 with a larger resistance value is no longer connected to the power supply circuit 120, and the second coil L2 with a smaller resistance value is connected to the power supply circuit 120, and the second coil L2 and the resonant capacitor are driven to oscillate at a preset frequency to generate a magnetic field, thereby performing low-power electromagnetic heating on the cookware with high magnetic permeability.

[0130] In the embodiment of the present application, a first switch 132 is provided between the second coil L2 and the power supply circuit 120, and a second switch 134 is provided between the first coil L1 and the power supply circuit 120. When the heating device 100 performs high-power electromagnetic heating on the cookware via the coil assembly 110, the first switch 132 and the second switch 134 are controlled to be turned on simultaneously, so that the first coil L1 and the second coil L2 simultaneously perform electromagnetic heating on the cookware, thereby improving heating efficiency. When the heating device 100 performs low-power electromagnetic heating on the cookware via the coil assembly 110, the first switch 132 is controlled to be turned on and the second switch 134 is turned off, so that only the second coil L2, which has a lower resistance, performs electromagnetic heating on the cookware, thereby reducing heating power consumption.

[0131] As shown in Figures 1 and 2, in some embodiments, the control circuit 140 optionally includes: a controller 142, a first power supply 144, and a zero-crossing detection circuit 146. The controller 142 is connected to the control terminals of the power supply circuit 120 and the switch assembly 130; the first power supply 144 is connected to the controller 142 for supplying power to the controller 142. The zero-crossing detection circuit 146 is connected to the controller 142 for detecting the zero-crossing point of the voltage output by the power supply circuit 120.

[0132] In this embodiment, the controller 142 is used to control the power supply circuit 120, thereby controlling the resonant frequency of the coil assembly 110. The first power supply 144 is a low-voltage power supply that can convert the high-voltage signal in the power supply circuit 120 into a low-voltage signal to power the controller 142. The zero-crossing detection module is used to detect the zero-crossing point of the voltage in the power supply circuit 120 and control the on / off state of the high-frequency switch in the power supply circuit 120 based on the zero-crossing point, thereby reducing the noise generated when the coil assembly 110 resonates.

[0133] In this embodiment, the controller 142 is also used to control the on / off state of the switch assembly 130 .

[0134] For example, the power supply circuit 120 includes a high-frequency switch component, and the controller 142 is connected to the high-frequency switch component. The controller 142 can control the high-frequency switch component to perform high-frequency switching. By adjusting the switching frequency of the high-frequency switch component and the on / off state of the switch assembly 130, the coil assembly 110 is controlled to perform electromagnetic heating through at least one of the first coil L1 and the second coil L2, or to control the first coil L1 to perform resistive heating.

[0135] As shown in Figures 1 and 2, in some embodiments, the power supply circuit 120 optionally includes: a second power supply 122, a filter circuit 124, a rectifier circuit 126, and an inverter switch circuit 128. A first end of the filter circuit 124 is connected to the output end of the second power supply 122, and a second end of the filter circuit 124 is connected to the control circuit 140; a first end of the rectifier circuit 126 is connected to the second end of the filter circuit 124; and the inverter switch circuit 128 is connected between the second end of the rectifier circuit 126 and the coil assembly 110.

[0136] In this embodiment, the power supply assembly includes a second power supply 122, which is an AC power supply. The filter circuit 124 is connected to the second power supply 122 and is capable of filtering the AC power output by the second power supply 122. The filtered AC power is transmitted to the control assembly for powering the control assembly. The rectifier circuit 126 is connected between the filter circuit 124 and the inverter switch circuit 128 to rectify the AC power signal transmitted to the inverter switch circuit 128 to form a DC power signal. The inverter switch circuit 128 is a high-frequency inverter switch component. The inverter switch circuit 128 is capable of converting the rectified DC power into a high-frequency AC power signal and transmitting it to the resonant capacitor and coil assembly 110.

[0137] It should be noted that the inverter switch circuit 128 can be a high-frequency switch component. The inverter switch circuit 128 is connected to the controller 142 in the control circuit 140. The controller 142 can control the inverter switch circuit 128 to perform high-frequency switching. By adjusting the switching frequency of the inverter switch circuit 128 and the on / off state of the switch component 130, the coil assembly 110 is controlled to perform electromagnetic heating through at least one of the first coil L1 and the second coil L2, or to control the first coil L1 to perform resistive heating.

[0138] Exemplarily, the inverter switch circuit 128 is an IGBT (Insulated Gate Bipolar Transistor) switch or a MOS (Metal Oxide Semiconductor) switch.

[0139] Exemplarily, the rectifier circuit 126 may be a rectifier circuit, and the filter circuit 124 may be a capacitor filter circuit 124 , a capacitor-inductor filter circuit 124 , or an inductor filter circuit 124 .

[0140] Illustratively, the control component includes a first power supply 144 , which can receive a filtered alternating current signal and convert the alternating current signal into a low-voltage electrical signal to power the controller 142 .

[0141] Exemplarily, the second power source 122 may be a mains power source.

[0142] In an embodiment of the present application, by setting a second power supply 122, a filter circuit 124, a rectifier circuit 126 and an inverter switch circuit 128 in the power supply component, the power supply component can provide stable power to the coil component 110, the resonant capacitor and the control component, thereby improving the stability of the operation of the heating device 100.

[0143] In some embodiments, optionally, the number of the first coils L1 is at least two, and / or the number of the second coils L2 is at least two.

[0144] In the embodiment of the present application, the number of the first coil L1 and the number of the second coil L2 can both be multiple, thereby improving the heating efficiency of the cookware when performing resistance heating and the heating efficiency of the cookware when performing electromagnetic heating.

[0145] As shown in FIG. 3 , in some embodiments, the wire bundle of the first coil L1 and the wire bundle of the second coil L2 are wound in parallel.

[0146] In this embodiment, the wire bundle in the first coil L1 is coiled and the wire bundle in the second coil L2 is also coiled, specifically spirally coiled or rotary coiled. The spirally coiled first coil L1 and second coil L2 can form an annular or circular heating area.

[0147] On this basis, the first coil L1 and the second coil L2 are wound in parallel in the same direction. That is, the wire bundles in the first coil L1 and the second coil L2 are arranged side by side in the same direction and in the same winding direction. Taking the spiral winding of the first coil L1 and the second coil L2 as an example, the second coil L2 is inserted into the gaps between the layers of the first coil L1, forming the first coil L1 and the second coil L2 with the same winding direction and nested inside and outside.

[0148] By winding the first coil L1 and the second coil L2 in parallel, the heating area generated by the first coil L1 can at least partially overlap with the heating area generated by the second coil L2, so that a single area on the cooking device can meet the electromagnetic heating requirements and the thermal radiation heating requirements at the same time, eliminating the need for users to distinguish between heating areas and select the material of the cooking device, thereby achieving the technical effect of optimizing the coil disk structure layout, improving the practicality of the coil disk, and enhancing the user experience.

[0149] According to one embodiment of the present application, as shown in FIG4 , a control method for a heating device is proposed, which is applied to the heating device in any of the above embodiments. The control method for the heating device includes:

[0150] Step 402, obtaining heating information;

[0151] Step 404: Based on the heating information, control at least one of the first coil and the second coil to perform electromagnetic heating through the switch assembly, or control the first coil to perform resistance heating.

[0152] In this embodiment, the heating information is information regarding the heating of the cookware by the heating device via the coil assembly. Based on this heating information, a heating method for the coil assembly to heat the cookware can be selected. The heating methods include electromagnetic heating using at least one of the first coil and the second coil in the coil assembly, and resistance heating using only the first coil.

[0153] For example, the heating information includes, but is not limited to, the type of cookware. If the cookware is a metal cookware with high magnetic permeability, electromagnetic heating is performed by at least one of the first coil and the second coil. If the cookware is a metal cookware with low magnetic permeability, resistance heating is performed by the first coil.

[0154] In an embodiment of the present application, a coil assembly including a first coil and a second coil having different resistance values ​​is provided in the heating device. By controlling the energization state and driving frequency of the first coil and the second coil, it is possible to control at least one of the first coil and the second coil to perform electromagnetic heating on the cookware, or to control the first coil to perform resistance heating on the cookware. This enables the heating assembly to perform both electromagnetic and resistance heating on cookware with high magnetic permeability, as well as resistance heating on cookware with low magnetic permeability. This allows the heating device to achieve good heating effects on different types of cookware, thereby improving the versatility of the heating device.

[0155] In some embodiments, optionally, the heating information includes a cooking stage;

[0156] According to the heating information, controlling at least one of the first coil and the second coil to perform electromagnetic heating, or controlling the first coil to perform resistance heating, through the switch assembly, includes:

[0157] Based on the cooking stage being a preheating stage, controlling the first coil to perform resistance heating through the switch assembly; or

[0158] Based on the cooking stage being a heating stage, at least one of the first coil and the second coil is controlled by the switch assembly to perform electromagnetic heating.

[0159] In this embodiment, the heating information includes cooking stages, which include but are not limited to a preheating stage and a heating stage. The preheating stage is a stage for uniformly preheating the cookware, and the heating stage requires a relatively low heating rate for the cookware. The heating stage is a stage for rapidly heating the ingredients in the cookware, and the heating stage requires a relatively high heating rate for the cookware.

[0160] In this embodiment, when the cooking stage is determined to be the preheating stage, the switch assembly is controlled to be on or off, so that the first coil (with a higher resistance) is connected to the power circuit and the second coil (with a lower resistance) is disconnected. This means that only the first coil performs resistance heating of the cookware. Because the resistance of the first coil is greater than that of the second coil, the first coil's heating efficiency is higher than that of the second coil under the same drive current, so the first coil with a higher resistance is selected for resistance heating.

[0161] Exemplarily, the switch assembly includes a first switch element, which is connected between the second coil and the power supply circuit. When resistive heating is performed on a cookware with high magnetic permeability, the first switch element is controlled to be in an off state. At this time, only the first coil with a larger resistance value is connected to the power supply circuit. The first coil is energized and self-heated, thereby resistively heating the cookware.

[0162] In this embodiment, when it is determined that the cooking stage is the heating stage, the on-off state of the switch component is controlled so that the first coil with a higher resistance value and the second coil with a lower resistance value are both connected to the power supply circuit, that is, the cookware is electromagnetically heated synchronously by the first coil and the second coil.

[0163] Exemplarily, the switch assembly includes a first switch element and a second switch element. The first switch element is connected between the second coil and the power supply circuit, and the second switch element is connected between the first coil and the power supply circuit. When resistive heating is performed on the cookware with high magnetic permeability, the first switch element and the second switch element are controlled to be in the on state. At this time, the first coil with larger resistance value and the second coil with smaller resistance value are both connected to the power supply circuit, and the cookware is electromagnetically heated synchronously by the first coil and the second coil, thereby realizing high-power electromagnetic heating of the cookware.

[0164] It should be noted that the heating device can obtain a heating control instruction and determine the current cooking stage based on the heating control instruction.

[0165] In this embodiment of the present application, the heating information includes cooking stages. In different control stages, the cookware is heated using different heating methods. During the preheating stage, the requirements for heating efficiency of the cookware are lower, but heating uniformity is higher. Therefore, only the first coil with a higher resistance value is used to heat the cookware with resistance heating. During the heating stage, the requirements for heating efficiency of the cookware are higher. Electromagnetic heating is then performed using at least one of the first coil and the second coil to improve heating efficiency.

[0166] In some embodiments, optionally, the heating device is used to heat the cookware, and the heating information includes the type of cookware;

[0167] According to the heating information, controlling at least one of the first coil and the second coil to perform electromagnetic heating, or controlling the first coil to perform resistance heating, through the switch assembly, includes:

[0168] Based on the cookware being of the first type, controlling at least one of the first coil and the second coil to perform electromagnetic heating through the switch assembly; or

[0169] Based on the cookware type being the second type, the first coil is controlled by the switch assembly to perform resistance heating.

[0170] In this embodiment, the heating information includes the type of cookware. Different cookware types are suitable for different heating methods. When the cookware type is the first type, electromagnetic heating is selected to be performed by the coil assembly. When the cookware type is the second type, resistance heating is selected to be performed by the coil assembly.

[0171] The following description will be made by taking as examples the first type of metal cookware with high magnetic permeability and the second type of cookware with low magnetic permeability.

[0172] In this embodiment, when the type of cookware is determined to be the first type, the on-off state of the switch assembly is controlled so that the first coil with higher resistance and the second coil with lower resistance are both connected to the power supply circuit, that is, the cookware is electromagnetically heated synchronously by the first coil and the second coil.

[0173] Exemplarily, the switch assembly includes a first switch element and a second switch element. The first switch element is connected between the second coil and the power supply circuit, and the second switch element is connected between the first coil and the power supply circuit. When resistive heating is performed on the cookware with high magnetic permeability, the first switch element and the second switch element are controlled to be in the on state. At this time, the first coil with larger resistance value and the second coil with smaller resistance value are both connected to the power supply circuit, and the cookware is electromagnetically heated synchronously by the first coil and the second coil, thereby realizing high-power electromagnetic heating of the cookware.

[0174] In this embodiment, when the cookware is determined to be of the second type, the switch assembly is controlled to be on and off, so that the first coil (with a higher resistance) is connected to the power circuit and the second coil (with a lower resistance) is disconnected from the power circuit. This means that only the first coil is used to perform resistance heating of the cookware. Because the resistance of the first coil is greater than that of the second coil, the first coil's heating efficiency is higher than that of the second coil under the same drive current, so the first coil with a higher resistance is selected for resistance heating.

[0175] Exemplarily, the switch assembly includes a first switch element, which is connected between the second coil and the power supply circuit. When resistive heating is performed on a cookware with high magnetic permeability, the first switch element is controlled to be in an off state. At this time, only the first coil with a larger resistance value is connected to the power supply circuit. The first coil is energized and self-heated, thereby resistively heating the cookware.

[0176] In an embodiment of the present application, the heating information includes the type of cookware. When the heating device is required to heat different types of cookware, the cookware is heated using different heating methods. If the cookware is of the first type with high magnetic permeability, electromagnetic heating is performed using at least one of the first coil and the second coil, improving heating efficiency. If the cookware is of the second type with low magnetic permeability, resistance heating is performed only using the first coil with a higher resistance value. This enables the heating device to heat different types of cookware, improving its versatility.

[0177] The above methods may be implemented in various ways depending on the specific features and / or example applications. For example, these methods may be implemented through a combination of hardware, firmware, and / or software. For example, in a hardware implementation, the processor may be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, electronic devices, other device units for performing the above functions, and / or combinations thereof.

[0178] According to one embodiment of the present application, as shown in FIG5 , a control device 500 for a heating device is provided, which is applied to the heating device in any of the above embodiments. The control device 500 for the heating device includes:

[0179] An acquisition module 502 is used to acquire heating information;

[0180] The control module 504 is configured to control at least one of the first coil and the second coil to perform electromagnetic heating, or control the first coil to perform resistance heating, through a switch assembly according to the heating information.

[0181] In this embodiment, the heating information is information regarding the heating of the cookware by the heating device via the coil assembly. Based on this heating information, a heating method for the coil assembly to heat the cookware can be selected. The heating methods include electromagnetic heating using at least one of the first coil and the second coil in the coil assembly, and resistance heating using only the first coil.

[0182] In an embodiment of the present application, a coil assembly including a first coil and a second coil having different resistance values ​​is provided in the heating device. By controlling the energization state and driving frequency of the first coil and the second coil, it is possible to control at least one of the first coil and the second coil to perform electromagnetic heating on the cookware, or to control the first coil to perform resistance heating on the cookware. This enables the heating assembly to perform both electromagnetic and resistance heating on cookware with high magnetic permeability, as well as resistance heating on cookware with low magnetic permeability. This allows the heating device to achieve good heating effects on different types of cookware, thereby improving the versatility of the heating device.

[0183] In some embodiments, optionally, the heating information includes a cooking stage;

[0184] The control module 504 is configured to control the first coil to perform resistance heating through the switch assembly based on the cooking stage being the preheating stage; or

[0185] The control module 504 is configured to control at least one of the first coil and the second coil to perform electromagnetic heating through a switch assembly based on the cooking stage being the heating stage.

[0186] In this embodiment, the heating information includes cooking stages, which include but are not limited to a preheating stage and a heating stage. The preheating stage is a stage for uniformly preheating the cookware, and the heating stage requires a relatively low heating rate for the cookware. The heating stage is a stage for rapidly heating the ingredients in the cookware, and the heating stage requires a relatively high heating rate for the cookware.

[0187] In this embodiment, when the cooking stage is determined to be the preheating stage, the switch assembly is controlled to be on or off, so that the first coil (with a higher resistance) is connected to the power circuit and the second coil (with a lower resistance) is disconnected. This means that only the first coil performs resistance heating of the cookware. Because the resistance of the first coil is greater than that of the second coil, the first coil's heating efficiency is higher than that of the second coil under the same drive current, so the first coil with a higher resistance is selected for resistance heating.

[0188] In this embodiment, when it is determined that the cooking stage is the heating stage, the on-off state of the switch component is controlled so that the first coil with a higher resistance value and the second coil with a lower resistance value are both connected to the power supply circuit, that is, the cookware is electromagnetically heated synchronously by the first coil and the second coil.

[0189] It should be noted that the heating device can obtain a heating control instruction and determine the current cooking stage based on the heating control instruction.

[0190] In this embodiment of the present application, the heating information includes cooking stages. In different control stages, the cookware is heated using different heating methods. During the preheating stage, the requirements for heating efficiency of the cookware are lower, but heating uniformity is higher. Therefore, only the first coil with a higher resistance value is used to heat the cookware with resistance heating. During the heating stage, the requirements for heating efficiency of the cookware are higher. Electromagnetic heating is then performed using at least one of the first coil and the second coil to improve heating efficiency.

[0191] In some embodiments, optionally, the heating device is used to heat the cookware, and the heating information includes the type of cookware;

[0192] The control module 504 is configured to control at least one of the first coil and the second coil to perform electromagnetic heating through the switch assembly based on the cookware being of the first type; or

[0193] The control module 504 is configured to control the first coil to perform resistance heating through the switch assembly based on the cooking stage being the first type.

[0194] In this embodiment, the heating information includes the type of cookware. Different cookware types are suitable for different heating methods. When the cookware type is the first type, electromagnetic heating is selected to be performed by the coil assembly. When the cookware type is the second type, resistance heating is selected to be performed by the coil assembly.

[0195] In this embodiment, when the type of cookware is determined to be the first type, the on-off state of the switch assembly is controlled so that the first coil with higher resistance and the second coil with lower resistance are both connected to the power supply circuit, that is, the cookware is electromagnetically heated synchronously by the first coil and the second coil.

[0196] In this embodiment, when the cookware is determined to be of the second type, the switch assembly is controlled to be on and off, so that the first coil (with a higher resistance) is connected to the power circuit and the second coil (with a lower resistance) is disconnected from the power circuit. This means that only the first coil is used to perform resistance heating of the cookware. Because the resistance of the first coil is greater than that of the second coil, the first coil's heating efficiency is higher than that of the second coil under the same drive current, so the first coil with a higher resistance is selected for resistance heating.

[0197] In an embodiment of the present application, the heating information includes the type of cookware. When the heating device is required to heat different types of cookware, the cookware is heated using different heating methods. If the cookware is of the first type with high magnetic permeability, electromagnetic heating is performed using at least one of the first coil and the second coil, improving heating efficiency. If the cookware is of the second type with low magnetic permeability, resistance heating is performed only using the first coil with a higher resistance value. This enables the heating device to heat different types of cookware, improving its versatility.

[0198] According to one embodiment of the present application, as shown in Figure 6, a control device 600 for a heating device is proposed, including: a memory 604, in which a program or instruction is stored; a processor 602, which executes the program or instruction stored in the memory 604 to implement the steps of the control method for the heating device in any embodiment, thereby having all the beneficial technical effects of the control method for the heating device in any of the above-mentioned embodiments, and no further details will be given here.

[0199] According to one embodiment of the present application, a readable storage medium is provided. The readable storage medium stores a program or instructions. When executed by a processor, the program or instructions implement the steps of the heating device control method described in any of the above embodiments. Therefore, all the beneficial technical effects of the heating device control method described in any of the above embodiments are achieved, and further details will not be given here.

[0200] A computer-readable storage medium can be a tangible device that can retain and store instructions for use by an instruction execution device. A computer-readable storage medium can be, but is not limited to, an electronic storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. A non-exhaustive list of more specific examples of computer-readable storage media includes: a portable computer floppy disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), a portable compact disc read-only memory (CD-ROM), a digital versatile disk (DVD), a memory card, a floppy disk, an encoding mechanical device (such as a punched card or a groove with a raised structure on which instructions are recorded), and any suitable combination of the foregoing. As used herein, a computer-readable storage medium should not be understood as a transmission signal per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium, or electrical signals transmitted through wires.

[0201] According to one embodiment of the present application, as shown in FIG7 , a cooking device 700 is provided, comprising: the heating device 100 of any of the aforementioned embodiments; and / or the control device 500 comprising the heating device of any of the aforementioned embodiments; and / or the readable storage medium 702 of any of the aforementioned embodiments. Therefore, the cooking device 700 has all the beneficial technical effects of the heating device 100 of any of the aforementioned embodiments; and / or the control device 500 comprising the heating device of any of the aforementioned embodiments; and / or the readable storage medium 702 of any of the aforementioned embodiments, and no further details will be given here.

[0202] In some technical solutions, optionally, the cooking device 700 further includes a support plate, and the first coil and the second coil are arranged on the support plate to form a coil plate.

[0203] In some technical solutions, optionally, the cooking device 700 further includes a heat dissipation component, through which the coil disk is cooled.

[0204] It should be clarified that in the claims, specification and drawings of this application, the term "plurality" refers to two or more. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the purpose of more conveniently describing this application and making the description process simpler, and is not intended to indicate or imply that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation. Therefore, these descriptions cannot be understood as limitations on this application. The terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood based on the specific circumstances of the above data.

[0205] In the claims, specification, and drawings of this application, the terms "one embodiment," "some embodiments," "a specific embodiment," and the like mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of this application. In the claims, specification, and drawings of this application, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0206] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A heating device, wherein: include: A coil assembly, the coil assembly comprising a first coil and a second coil connected in parallel, wherein a resistance value of the first coil is different from a resistance value of the second coil; A power supply circuit, used to supply power to the coil assembly; A switch assembly connected between the power supply circuit and the coil assembly; A control circuit is connected to the control end of the switch component, and the control circuit is used to control at least one of the first coil and the second coil to perform electromagnetic heating, or control the first coil to perform resistance heating through the switch component.

2. The heating device according to claim 1, wherein: The resistance value of the first coil is greater than the resistance value of the second coil.

3. The heating device according to claim 1, wherein: The switch assembly comprises: a first switch element, connected between the second coil and the power supply circuit; The control circuit is specifically used to control the first switch element to be disconnected so that the first coil performs resistance heating, or to control the first switch element to be turned on so that the first coil and the second coil perform electromagnetic heating synchronously.

4. The heating device according to claim 3, wherein: The switch assembly further comprises: a second switch element, connected between the first coil and the power supply circuit; The control circuit is specifically used to control the first switch element and the second switch element to be turned on, so that the first coil and the second coil are both subjected to electromagnetic heating; or The control circuit is specifically used to control the first switch element to be turned on and the second switch element to be turned off, so that the second coil is subjected to electromagnetic heating.

5. The heating device according to any one of claims 1 to 4, wherein: The control circuit comprises: A controller connected to the power supply circuit and the control end of the switch assembly; A first power supply, connected to the controller, and configured to supply power to the controller; The zero-crossing detection circuit is connected to the controller and is used to detect the zero-crossing point of the voltage output by the power supply circuit.

6. The heating device according to any one of claims 1 to 4, wherein: The power supply circuit comprises: Second power supply; A filter circuit, wherein a first end of the filter circuit is connected to an output end of the second power supply, and a second end of the filter circuit is connected to the control circuit; A rectifier circuit, wherein a first end of the rectifier circuit is connected to a second end of the filter circuit; An inverter switch circuit is connected between the second end of the rectifier circuit and the coil assembly.

7. The heating device according to any one of claims 1 to 4, wherein: The number of the first coils is at least two, and / or the number of the second coils is at least two.

8. The heating device according to any one of claims 1 to 4, wherein: The wire bundle of the first coil and the wire bundle of the second coil are wound in parallel.

9. A method for controlling a heating device, wherein: The heating device according to any one of claims 1 to 8, wherein the control method of the heating device comprises: Get heating information; According to the heating information, at least one of the first coil and the second coil is controlled by the switch component to perform electromagnetic heating, or the first coil is controlled to perform resistance heating.

10. The control method of the heating device according to claim 9, wherein: The heating information includes a cooking stage; According to the heating information, controlling at least one of the first coil and the second coil to perform electromagnetic heating, or controlling the first coil to perform resistance heating, through the switch component, comprises: Based on the cooking stage being a preheating stage, controlling the first coil to perform resistance heating through the switch assembly; or Based on the cooking stage being a heating stage, at least one of the first coil and the second coil is controlled by the switch assembly to perform electromagnetic heating.

11. The control method of the heating device according to claim 9, wherein: The heating device is used to heat the cookware, and the heating information includes the type of cookware; According to the heating information, controlling at least one of the first coil and the second coil to perform electromagnetic heating, or controlling the first coil to perform resistance heating, through the switch component, comprises: Based on the cookware being of the first type, controlling at least one of the first coil and the second coil to perform electromagnetic heating through the switch assembly; or Based on the fact that the cookware type is the second type, the first coil is controlled by the switch assembly to perform resistance heating.

12. A control device for a heating device, wherein: The heating device according to any one of claims 1 to 8, wherein the control device of the heating device comprises: An acquisition module, used for acquiring heating information; A control module is used to control at least one of the first coil and the second coil to perform electromagnetic heating, or control the first coil to perform resistance heating through the switch component according to the heating information.

13. A control device for a heating device, wherein: include: A processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method according to any one of claims 9 to 11 are implemented.

14. A readable storage medium having a program or instruction stored thereon, wherein: When the program or instruction is executed by a processor, the steps of the method according to any one of claims 9 to 11 are implemented.

15. A cooking device, wherein: include: The heating device according to any one of claims 1 to 8 ； A control device for a heating device as claimed in claim 12 or 13; and / or The readable storage medium of claim 14.

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