Electromagnetic heating device

Abstract

The invention relates to an electromagnetic heating device. The electromagnetic heating device comprises a control assembly, a coil assembly, a first magnetic strip assembly, a second magnetic strip assembly, a magnetic strip supporting piece and a motor, and the control assembly is connected with the coil assembly and used for controlling connection and disconnection of the coil assembly and a power source; the second magnetic strip assembly is fixed on the magnetic strip supporting piece; the magnetic strip supporting piece comprises a sliding groove, and the first magnetic strip assembly is movably connected with the magnetic strip supporting piece through the sliding groove. The motor is connected with the first magnetic strip assembly; the control assembly is further connected with the motor and used for responding to a heating instruction, and when the heating instruction is a position switching instruction, the motor is controlled to drive the first magnetic strip assembly to move to the target position. By adopting the device, the heating efficiency and the safety can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of electromagnetic heating equipment, and in particular to an electromagnetic heating device. Background Art

[0002] Electromagnetic heating equipment uses the phenomenon of electromagnetic induction, that is, using alternating current to pass through a coil to generate an alternating magnetic field with a constantly changing direction. Eddy currents will appear inside the conductor in the alternating magnetic field, which is caused by the eddy electric field driving the movement of carriers in the conductor; the Joule heating effect of the eddy current causes the conductor to heat up, thereby achieving heating.

[0003] The electromagnetic heating equipment with traditional technology often has a fixed coil position, which often leads to a fixed heating position of the pot body. Fixed position heating will lead to uneven heating and low heating efficiency. Furthermore, it may cause local boiling and splashing of droplets, affecting the safety of users.

[0004] This shows that the current electromagnetic heating equipment still has problems of low heating efficiency and safety. Summary of the invention

[0005] Based on this, it is necessary to provide an electromagnetic heating device that can improve heating efficiency and safety in response to the above technical problems.

[0006] In a first aspect, the present application provides an electromagnetic heating device, the electromagnetic heating device comprising a control component, a coil component, a first magnetic strip component, a second magnetic strip component, a magnetic strip support, and a motor, wherein:

[0007] The control component is connected to the coil component and is used to control the on and off of the coil component and the power supply;

[0008] The second magnetic stripe assembly is fixed to the magnetic stripe support; the magnetic stripe support comprises a sliding slot, and the first magnetic stripe assembly is movably connected to the magnetic stripe support via the sliding slot; the motor is connected to the first magnetic stripe assembly;

[0009] The control component is also connected to the motor and is used to respond to a heating instruction. When the heating instruction is a position switching instruction, the control component controls the motor to drive the first magnetic stripe component to move to a target position.

[0010] In one embodiment, the control component is further configured to:

[0011] When the heating instruction is a position switching instruction, obtaining the current position of the first magnetic stripe assembly;

[0012] Based on the current position, determining a target position of the first magnetic stripe assembly;

[0013] Based on the current position and the target position, generating a first motor drive signal;

[0014] Based on the first motor driving signal, the motor is controlled to drive the first magnetic stripe assembly to move to the target position.

[0015] In one embodiment, the control component is further configured to:

[0016] When the heating instruction is an alternating heating instruction, generating a second motor driving signal based on the movable range of the first magnetic strip assembly;

[0017] Based on the second motor driving signal, the motor is controlled to drive the first magnetic stripe assembly to move within the movable range.

[0018] In one embodiment, the electromagnetic heating device comprises a plurality of the first magnetic strip assemblies, and the plurality of the first magnetic strip assemblies are radially spaced around the axis of the coil assembly; each of the first magnetic strip assemblies comprises a first magnetic strip and a magnetic strip support;

[0019] A male plug and a female plug are respectively provided at both ends of each magnetic stripe bracket, and every two adjacent first magnetic stripe components are movably connected in the sliding groove through the male plug and the female plug; the motor is connected to any one of the first magnetic stripe components.

[0020] In one embodiment, the electromagnetic heating device comprises a plurality of the second magnetic strip assemblies, and the plurality of the second magnetic strip assemblies are radially spaced around the axis of the coil assembly;

[0021] At least one of the second magnetic stripe assemblies is arranged between any two adjacent first magnetic stripe assemblies.

[0022] In one embodiment, the coil assembly includes a first coil, a first switch, and a second coil, wherein the first coil is connected to a power source through the first switch; two ends of the second coil are connected to each other; the first coil and the second coil are concentrically arranged;

[0023] The control component is connected to the first switch, and is used to control the conduction of the first switch in response to the heating instruction, so that the first coil is connected to the power supply and heated.

[0024] In one embodiment, the coil assembly further includes a second switch, and two ends of the second coil are connected via the second switch;

[0025] The control component is also connected to the second switch, and is used to control the conduction of the second switch and the conduction of the first switch when the heating instruction is an auxiliary heating instruction, so that the first coil is connected to the power supply and heated.

[0026] In one embodiment, the coil assembly further includes a third coil, a third switch, a fourth coil and a fourth switch, the third coil is connected to a power source through the third switch; the fourth coil is connected to a power source through the fourth switch;

[0027] The control component is connected to the third switch and the fourth switch respectively, and is used to control the conduction of the third switch and / or the fourth switch in response to the heating instruction, so that the third coil and / or the fourth coil are connected to the power supply and heated.

[0028] In one embodiment, the control component is further configured to:

[0029] When the heating instruction is an alternating heating instruction, based on a preset interval duration, the third switch and the fourth switch are controlled to be turned on and off in turn, so that the third coil and the fourth coil are heated in turn.

[0030] In one embodiment, the power supply includes a first power supply and a second power supply, the third coil is connected to the first power supply through the third switch, and the fourth coil is connected to the second power supply through the fourth switch.

[0031] The above-mentioned electromagnetic heating device is fixed to the magnetic stripe support member through the second magnetic stripe assembly, and the first magnetic stripe assembly is movably connected to the magnetic stripe support member through a sliding groove; the motor is connected to the first magnetic stripe assembly; the control assembly controls the on and off of the coil assembly and the power supply; in response to a heating instruction, when the heating instruction is a position switching instruction, the motor is controlled to drive the first magnetic stripe assembly to move along the sliding groove to the target position, thereby realizing dynamic adjustment of the heating area, solving the problem of uneven heating of traditional electromagnetic heating devices, and achieving the effect of improving heating efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of an electromagnetic heating device in one embodiment;

[0033] Figure 2 is a schematic structural diagram of an electromagnetic heating device in one embodiment;

[0034] Figure 3 is a structural block diagram of an electromagnetic heating device in one embodiment;

[0035] Figure 4 is a structural block diagram of an electromagnetic heating device in another embodiment;

[0036] Figure 5 is a structural block diagram of an electromagnetic heating device in another embodiment;

[0037] Figure 6 is a structural block diagram of an electromagnetic heating device in another embodiment;

[0038] Figure 7 is a structural block diagram of an electromagnetic heating device in another embodiment;

[0039] Figure 8 is a structural block diagram of an electromagnetic heating device in another embodiment;

[0040] Fig. 9 is a schematic structural diagram of an electromagnetic heating device in another embodiment;

[0041] Fig.10 FIG. 4 is a schematic diagram of the structure of an electromagnetic heating device in another embodiment.

[0042] Figure numerals: 1. control component; 2. coil component; 3. first magnetic stripe component; 4. second magnetic stripe component; 5. magnetic stripe support; 6. motor; 51. sliding groove; 31. first magnetic stripe; 32. magnetic stripe support; 321. male plug; 322. female plug; 323. plug-in part. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as the content disclosed in this application is insufficient.

[0045] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0046] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation, and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application refers to greater than or equal to two. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships, for example, "A and / or B" can represent: A exists alone, A and B exist at the same time, and B exists alone. The terms "first", "second", "third" and the like involved in the present application are merely used to distinguish similar objects and do not represent a specific ordering of the objects.

[0047] In one embodiment, Figure 1 As shown, an electromagnetic heating device is provided, which includes a control component 1, a coil component 2, a first magnetic strip component 3, a second magnetic strip component 4, a magnetic strip support 5 and a motor 6, wherein:

[0048] The control component 1 is connected to the coil component 2 and is used to control the on and off of the coil component 2 and the power supply;

[0049] The second magnetic stripe assembly 4 is fixed to the magnetic stripe support 5; the magnetic stripe support 5 includes a sliding groove 51, and the first magnetic stripe assembly 3 is movably connected to the magnetic stripe support 5 through the sliding groove 51; the motor 6 is connected to the first magnetic stripe assembly 3;

[0050] The control component 1 is also connected to the motor 6 for responding to a heating instruction. When the heating instruction is a position switching instruction, the control motor 6 drives the first magnetic strip component 3 to move to a target position.

[0051] In this embodiment, the control component 1 is used to manage the connection between the power supply and the coil component 2, and to control the drive of the motor 6. The control component 1 may include a processor or a controller, such as a central processing unit (CPU), a general processor, an artificial intelligence (AI) chip, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The processor may also be a combination that implements computing functions and / or control functions, and may include, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, or a combination of a CPU with a GPU or an AI chip, and the like.

[0052] The coil assembly 2 may be composed of a conductive coil for generating an alternating magnetic field, so that electrical energy can be efficiently converted into thermal energy, and metal devices placed thereon can be inductively heated. The coil assembly 2 may include one or more coils, and the multiple coils may be arranged in sequence in an array, or may be concentrically arranged from the inside to the outside according to different radii, or may be a combination of an array and a concentric arrangement. For example, multiple coils arranged in an array may be arranged in a coil of a preset radius.

[0053] The first magnetic strip assembly 3 may be one or more groups of movable magnetic strips, referred to as first magnetic strips, which may slide in the sliding groove 51 in the magnetic strip support 5. It is understood that the movement of the first magnetic strip assembly 3 may change the magnetic field distribution, so that the heating area may change dynamically on the surface of the heated metal device, thereby avoiding the situation of heating at a fixed position, thereby improving the uniformity and efficiency of heating.

[0054] The second magnetic strip assembly 4 may be one or more groups of fixed magnetic strips, mounted on the magnetic strip support 5, and used to gather and maintain the basic magnetic flux lines of the electromagnetic heating device, so that the coil assembly 2 can work normally and efficiently.

[0055] The magnetic strip support 5 is a structural member for carrying the magnetic strip, and is provided with a sliding groove 51 for guiding the moving direction of the first magnetic strip assembly 3 and for installing the second magnetic strip assembly 4. The supporting position of the magnetic strip support 5 corresponding to the second magnetic strip assembly 4 matches the magnetic flux lines of the coil assembly 2. The sliding groove 51 is used to limit the moving direction of the first magnetic strip assembly 3, so that the first magnetic strip assembly 3 moves within the position limited by the sliding groove 51. Further, the moving direction of the first magnetic strip assembly 3 is limited to the radial direction of the coil assembly 2.

[0056] The motor 6 is used to drive the first magnetic stripe assembly 3 to move. In response to the command issued by the control assembly 1, the motor 6 can accurately adjust the position of the first magnetic stripe assembly 3, thereby realizing the dynamic change of the heating position and improving the uniformity of heating.

[0057] In this embodiment, the electromagnetic heating device can be applied to devices that heat by electromagnetic induction principle, and can include electromagnetic cookers, electromagnetic heating equipment, electromagnetic steam generating equipment, etc. The heating instruction can be received or generated by the device and sent to the electromagnetic heating device, or it can be generated by user interaction.

[0058] The position switching instruction is a type of heating instruction, which is used to instruct the control to switch the position of the first magnetic stripe component 3. The position switching instruction may include position information. When the heating instruction is a position switching instruction, the control component 1 reads the position information in the position switching instruction to obtain the target position, and then controls the motor 6 to drive the first magnetic stripe component 3 to move to the target position. Exemplarily, the control component 1 can determine the parameters such as the running speed and running time of the motor 6 according to the target position, and then control the motor 6.

[0059] The target position can be set by the user or determined according to different modes of the device where the electromagnetic heating device is located. Exemplarily, the device where the electromagnetic heating device is located can include inner ring heating, outer ring heating and other modes. In the inner ring heating mode, the first magnetic strip assembly 3 can be controlled to move so that the heating area is switched to the inner ring area; in the outer ring heating mode, the first magnetic strip assembly 3 can be controlled to move so that the heating area is switched to the outer ring area.

[0060] An electromagnetic heating device provided by this embodiment is fixed to a magnetic stripe support member through a second magnetic stripe assembly, and a first magnetic stripe assembly is movably connected to the magnetic stripe support member through a sliding groove; a motor is connected to the first magnetic stripe assembly; a control assembly controls the on and off of the coil assembly and the power supply; in response to a heating instruction, when the heating instruction is a position switching instruction, the control motor drives the first magnetic stripe assembly to move along the sliding groove to the target position, thereby realizing dynamic adjustment of the heating area, solving the problem of uneven heating in traditional electromagnetic heating devices, and achieving the effect of improving heating efficiency and safety.

[0061] In one embodiment, controlling the motor to drive the first magnetic strip assembly to move to the target position may be achieved in the following manner, and the control assembly is further used for:

[0062] When the heating instruction is a position switching instruction, obtaining the current position of the first magnetic stripe assembly;

[0063] Based on the current position, determining a target position of the first magnetic stripe assembly;

[0064] Based on the current position and the target position, generate a first motor drive signal;

[0065] Based on the first motor driving signal, the motor is controlled to drive the first magnetic stripe assembly to move to a target position.

[0066] Among them, the current position of the first magnetic stripe assembly can be obtained in the cavity of the electromagnetic heating device, or an internal sensor is provided on the first magnetic stripe assembly, and the current position of the first magnetic stripe assembly is determined according to the electrical signal fed back by the internal sensor. When the motor adopts a brushless DC motor, the DC brushless motor can also measure the position of its own rotor to convert the current position of the first magnetic stripe assembly.

[0067] It can be understood that the first magnetic stripe assembly moves within the range limited by the sliding slot. Therefore, when it is necessary to switch to the target position, the current position of the first magnetic stripe assembly can be determined, and then the speed, time and other information required to move it to the target position through the motor can be determined based on the current position.

[0068] In this embodiment, the first magnetic stripe component can be switched back and forth between the first position and the second position, and accordingly, the position switching instruction can be used to instruct the first magnetic stripe component to switch positions, that is, switch from the first position to the second position, or switch from the second position to the first position. Based on the current position, determining the target position of the first magnetic stripe component can be to determine whether the current position is the first position or the second position, and then determine the target position of the first magnetic stripe component.

[0069] It is understandable that when the position switching instruction includes position information, it is not necessary to determine the target position of the first magnetic stripe assembly based on the current position, and the target position of the first magnetic stripe assembly can be determined based on the position information.

[0070] Based on the current position and the target position, a first motor drive signal is generated. The control system may generate a motor drive signal based on the difference between the current position and the target position to guide the working mode of the motor. For example, parameters such as rotation direction and speed may be included. The motor drive signal may include multiple pulse sequences, each pulse corresponding to a position adjustment, thereby achieving continuous or intermittent position changes.

[0071] Based on the first motor driving signal, the motor is controlled to drive the first magnetic stripe assembly to move to the target position. The motor can start to operate after receiving the driving signal, and push the first magnetic stripe assembly to move along the sliding groove to the target position, thereby realizing dynamic adjustment of the heating zone and improving the uniformity and efficiency of heating.

[0072] An electromagnetic heating device provided in this embodiment generates a first motor drive signal based on the current position and the target position; based on the first motor drive signal, the motor is controlled to drive the first magnetic stripe assembly to move to the target position, and the first magnetic stripe assembly can be accurately moved to the target position, thereby achieving the effect of improving heating efficiency and safety.

[0073] In one of the embodiments, when the electromagnetic heating device is applied to cooking equipment such as an induction cooker, the position switching instruction can determine the position information according to the size of the pot to be heated, and send it to the electromagnetic heating device through the position switching mass, so as to provide more precise heating according to pots of different shapes and sizes.

[0074] In one embodiment, the control component is further configured to:

[0075] When the heating instruction is an alternating heating instruction, generating a second motor driving signal based on the movable range of the first magnetic strip assembly;

[0076] Based on the second motor driving signal, the motor is controlled to drive the first magnetic strip assembly to move within the movable range.

[0077] The heating instructions also include alternating heating instructions, which are used to instruct the first magnetic stripe assembly to perform cyclical reciprocating motion, so that the heating area changes regularly under the movement of the first magnetic stripe assembly, thereby achieving a uniform heating effect.

[0078] The movable range of the first magnetic stripe assembly may be a maximum moving range of the first magnetic stripe assembly moving along a specific path in the sliding slot of the magnetic stripe support.

[0079] Based on the second motor driving signal, the control motor drives the first magnetic stripe assembly to move within the movable range. The control motor may drive the first magnetic stripe assembly to move back and forth within the movable range according to the second motor driving signal to achieve dynamic heating zone distribution.

[0080] Furthermore, the alternating heating instructions may also include inner ring alternating heating instructions and outer ring alternating heating instructions. The inner ring alternating heating instructions are used to control the motor to drive the first magnetic stripe assembly to move within the inner ring moving range of the coil assembly, and the outer ring alternating heating instructions are used to control the motor to drive the first magnetic stripe assembly to move within the outer ring moving range of the coil assembly.

[0081] The electromagnetic heating device provided in this embodiment controls the movement of the first magnetic strip assembly within a movable range so that the heating area can continuously change on the entire surface of the bottom of the pot, thereby improving the uniformity and efficiency of heating, reducing the risk of local overheating caused by fixed heating points, reducing the possibility of liquid splashing, and improving user safety.

[0082] In one embodiment, the electromagnetic heating device includes a plurality of first magnetic stripe assemblies, which are radially spaced around the axis of the coil assembly; each first magnetic stripe assembly includes a first magnetic stripe and a magnetic stripe bracket;

[0083] A male plug and a female plug are respectively arranged at both ends of each magnetic stripe bracket, and every two adjacent first magnetic stripe components are movably connected in the sliding groove through the male plug and the female plug; the motor is connected to any one of the first magnetic stripe components.

[0084] Among them, the electromagnetic heating device includes multiple independent first magnetic stripe assemblies, each first magnetic stripe assembly includes a first magnetic stripe and a magnetic stripe bracket, and the multiple first magnetic stripe assemblies are radially spaced around the axis of the coil assembly, that is, the multiple first magnetic stripes can be radially spaced around the axis of the coil assembly.

[0085] The magnetic strip support is a structural member used to support and fix the first magnetic strip, and is used to ensure stable sliding of the first magnetic strip in the sliding groove.

[0086] Wherein, male plugs and female plugs are respectively provided at both ends of the magnetic stripe bracket for connecting adjacent first magnetic stripe assemblies. Exemplarily, when a plurality of first magnetic stripe assemblies are provided corresponding to a coil assembly, the plurality of magnetic stripe brackets are axially arranged around the coil assembly, and adjacent magnetic stripe brackets are movably connected through male plugs and female plugs. When the motor controls one of the first magnetic stripe assemblies to move toward the axis of the coil assembly, the adjacent magnetic stripe brackets also move toward the axis, thereby realizing the simultaneous movement of multiple first magnetic stripe assemblies, reducing mechanical complexity and cost, ensuring that all first magnetic stripe assemblies can move synchronously according to unified instructions, and maintaining the consistency and stability of the heating mode.

[0087] An electromagnetic heating device provided in this embodiment includes multiple first magnetic stripe assemblies, in which the first magnetic stripe is supported by a magnetic stripe bracket, and the magnetic stripe brackets are movably connected by a male plug and a female plug, so that the multiple first magnetic stripe assemblies can move smoothly in the sliding groove without disengaging, thereby reducing mechanical complexity and cost and maintaining the consistency and stability of the heating mode.

[0088] In one embodiment, the electromagnetic heating device includes a plurality of second magnetic strip assemblies, and the plurality of second magnetic strip assemblies are radially spaced around the axis of the coil assembly;

[0089] At least one second magnetic stripe assembly is arranged between any two adjacent first magnetic stripe assemblies.

[0090] The device also includes a plurality of fixed second magnetic strip assemblies, which are radially spaced around the axis of the coil assembly, thereby enhancing the stability and strength of the magnetic field, helping to more efficiently concentrate and guide the induced heat, thereby improving the heating efficiency.

[0091] An electromagnetic heating device provided in this embodiment has a first magnetic stripe assembly and a second magnetic stripe assembly arranged alternately. The second magnetic stripe assembly fills the gap between the first magnetic stripe assemblies, thereby ensuring uniform distribution of the magnetic field on the entire surface of the bottom of the pot, reducing the heating blind area, and obtaining a dynamic and stable magnetic field environment, further improving the uniformity of heating. At the same time, by precisely controlling the distribution of the magnetic field, local overheating can be effectively avoided, reducing the risk of liquid splashing, and improving the safety of use.

[0092] In one embodiment, the coil assembly includes a first coil, a first switch, and a second coil, wherein the first coil is connected to a power source through the first switch; two ends of the second coil are connected to each other; the first coil and the second coil are concentrically arranged;

[0093] The control component is connected to the first switch and is used to control the conduction of the first switch in response to a heating instruction, so that the first coil is connected to the power supply and heated.

[0094] Among them, the first coil is one of the induction heating elements of the electromagnetic heating device, which is responsible for generating an alternating magnetic field to heat the metal device. By connecting to the power supply, it can generate a strong magnetic field when powered on to achieve efficient heating. The first coil is connected to the power supply through a first switch, and the first switch is used to control whether the first coil is connected to the power supply, which can be achieved through a relay, a solid-state switch, an IGBT, a MOSFET, etc.

[0095] The second coil is located inside the first coil, and its two ends are connected to each other to form a closed loop. In this embodiment, the second coil is not directly connected to the power supply. The first coil and the second coil are arranged concentrically.

[0096] In this embodiment, the first coil is connected to the power supply as the main coil, and the power supply can be a complete electromagnetic excitation circuit or a high-frequency power supply. The second coil is used as an auxiliary coil and is closed at the end. The first coil can be an outer coil or an inner coil. When the first coil is connected to the power supply, the first coil normally heats the upper metal device. At this time, due to the characteristics of electromagnetic induction, the first coil will couple with the second coil and generate a high-frequency oscillating current of the same frequency in the second coil. At this time, the high-frequency oscillating current can further heat the upper metal pot body.

[0097] It is understandable that the coupled high-frequency current generated by the auxiliary coil is smaller than that of the main coil. Therefore, when the first coil is an outer coil, the heating power of the outer coil is higher than that of the inner coil, and when the first coil is an inner coil, the heating power of the inner coil is higher than that of the outer coil. Furthermore, the second coil can also help adjust the magnetic field distribution to make the heating more uniform.

[0098] An electromagnetic heating device provided in this embodiment is connected to a power supply through a first switch by a first coil, and the second coil is closed at the end. This can achieve that while the first coil is heating, the second coil generates the same high-frequency oscillating current to heat the metal pot body, and enhance the magnetic field strength and distribution, thereby improving the heating efficiency and achieving the effect of improving the heating efficiency and safety.

[0099] In one embodiment, the coil assembly further includes a second switch, and the two ends of the second coil are connected via the second switch;

[0100] The control component is also connected to the second switch, and is used to control the conduction of the second switch and the conduction of the first switch when the heating instruction is an auxiliary heating instruction, so that the first coil is connected to the power supply and heated.

[0101] The second switch is used to control the connection state of the two ends of the second coil, and can be realized by a relay, a solid-state switch, an IGBT, a MOSFET, etc.

[0102] By setting the second switch, the user or the device can selectively enable or disable the second coil according to actual needs, thereby increasing the diversity of heating modes.

[0103] When the heating instruction is an auxiliary heating instruction, the second switch is controlled to be turned on and the first switch is turned on, so that the first coil is connected to the power supply and heated, so that the first coil and the second coil work at the same time, which enhances the overall magnetic field strength and improves the heating efficiency. The first coil and the second coil work together to generate a stronger alternating magnetic field, thereby providing higher heating power.

[0104] An electromagnetic heating device provided in this embodiment can enable the first coil and the second coil to work together and improve the heating efficiency through the setting of the first switch and the second switch. Through the precise control of the first switch and the second switch by the control component, flexible switching between multiple heating modes is achieved to adapt to different cooking needs and achieve the effect of improving heating efficiency and safety.

[0105] In one embodiment, the coil assembly further includes a third coil, a third switch, a fourth coil and a fourth switch, the third coil is connected to the power supply through the third switch; the fourth coil is connected to the power supply through the fourth switch;

[0106] The control component is connected to the third switch and the fourth switch respectively, and is used to control the conduction of the third switch and / or the fourth switch in response to a heating instruction, so that the third coil and / or the fourth coil is connected to the power supply and heated.

[0107] The third coil and the fourth coil may be arranged concentrically or independently. The third coil is connected to the power supply through a third switch, and the fourth coil is connected to the power supply through a fourth switch.

[0108] When the third coil and the fourth coil are independently arranged, the electromagnetic heating device can heat different areas respectively, and each coil can be correspondingly arranged with a first magnetic strip assembly, and the heating position of the coil can be adjusted by the first magnetic strip assembly.

[0109] When the third coil and the fourth coil are arranged concentrically, the electromagnetic heating device can realize inner ring heating and outer ring heating. The third coil and the fourth coil can be used as the inner coil and the outer coil, respectively, or as the outer coil and the inner coil, respectively, which is not limited in this embodiment. The inner coil can be used to heat the central area of ​​the metal device, and the outer coil can be used to heat the edge area of ​​the metal device.

[0110] Furthermore, the first magnetic strip assembly is arranged according to the axis of the coil assembly. Since the first magnetic strip assembly is arranged radially around the axis of the coil assembly, compared with the fixed position arrangement of the third coil and the fourth coil, the first magnetic strip assembly can be used to adjust the heating area more flexibly on this basis. Exemplarily, when it is necessary to heat the heating area between the third coil and the fourth coil in a targeted manner, the magnetic flux lines can be adjusted by adjusting the position of the first magnetic strip assembly to achieve heating of the heating area between the third coil and the fourth coil.

[0111] The control component is connected to the third switch and the fourth switch respectively, and is used to control the conduction of the third switch and / or the fourth switch in response to a heating instruction, so that the third coil and / or the fourth coil is connected to the power supply and heated.

[0112] By controlling the third switch and the fourth switch individually or simultaneously, the third coil and the fourth coil can be finely controlled. Taking the third coil as the inner coil and the fourth coil as the outer coil as an example, when the heating instruction is the inner coil heating instruction, the third switch is controlled to be turned on so that the third coil is turned on and heated; when the heating instruction is the outer coil heating instruction, the fourth switch is controlled to be turned on so that the fourth coil is turned on and heated; when the heating instruction is the global heating instruction, the third switch and the fourth switch are controlled to be turned on so that the third coil and the fourth coil are turned on and heated.

[0113] The electromagnetic heating device provided in this embodiment allows the system to flexibly adjust the heating mode according to different cooking needs through independent control of multiple coils, providing a wider range of heating options. Through the intelligent regulation of the control components, the system can smoothly switch between different heating modes, provide the most appropriate heating effect and maintain energy saving, as well as achieve the effect of improving heating efficiency and safety.

[0114] In one embodiment, the control component is further configured to:

[0115] When the heating instruction is an alternating heating instruction, based on a preset interval duration, the third switch and the fourth switch are controlled to be turned on and off in turn, so that the third coil and the fourth coil are heated in turn.

[0116] Among them, the alternating heating instruction is a type of heating instruction, which is used to control the third coil and the fourth coil to heat in turn. By heating different coils in turn, it can be ensured that all areas of the bottom of the pot can be fully heated. By heating different coils in turn, it can be ensured that all areas of the bottom of the pot can be fully heated, reducing the problem of uneven heating.

[0117] The preset interval duration may be the time interval for each switching of the heating areas, and the time interval may be determined according to different modes of the device in which the electromagnetic heating device is located, or may be set by the user.

[0118] In a specific embodiment, taking the third coil as the inner coil and the fourth coil as the outer coil as an example, the heating area can be switched on time: the third coil is controlled to be heated in the first 3 minutes, and the fourth coil is not heated, so as to realize the heating of the inner ring; in the next 3 minutes, the third coil is controlled not to be heated, and the fourth coil is heated, so as to realize the heating of the outer ring, and the cycle is repeated in sequence.

[0119] Furthermore, the two ends of the third coil are also connected through the fifth switch, and the two ends of the fourth coil are also connected through the sixth switch. In a specific embodiment, taking the third coil as the inner coil and the fourth coil as the outer coil as an example, the timed switching of the heating area can be: the third coil is controlled to heat for the first 3 minutes, the fourth coil is closed through the sixth switch, and the third coil is responsive to the high-frequency oscillating current generated by the third coil for auxiliary heating, so as to achieve inner circle heating and auxiliary heating; the fourth coil is controlled to heat for the next 3 minutes, the third coil is closed through the fifth switch, and the fourth coil is responsive to the high-frequency oscillating current generated by the fourth coil for auxiliary heating, so as to achieve outer circle heating and auxiliary heating, and the cycle is repeated in sequence. In this embodiment, 3 minutes is only an example of the preset interval duration, and the preset interval duration can also be a duration in milliseconds, seconds, minutes, hours, etc., which is not limited in this embodiment.

[0120] An electromagnetic heating device provided in this embodiment can intelligently manage and allocate heating resources by alternately controlling the on and off of a third switch and a fourth switch so that the corresponding coils take turns participating in heating, thereby ensuring that each heating area can obtain appropriate heat, avoiding long-term high-temperature heating at a fixed position, and reducing the risk of forming hot spots.

[0121] In one embodiment, the power supply includes a first power supply and a second power supply, the third coil is connected to the first power supply through a third switch, and the fourth coil is connected to the second power supply through a fourth switch.

[0122] In this embodiment, a dual power supply configuration is adopted, wherein the first power supply is an independent power supply module for supplying power to the third coil, and the second power supply is an independent power supply module for supplying power to the fourth coil.

[0123] The control component can intelligently determine the power to be enabled based on the heating instruction to optimize the heating process.

[0124] The electromagnetic heating device provided in this embodiment connects the third coil and the fourth coil to the independent first power supply and the second power supply respectively, so that the control system can realize independent heating control of each coil, thereby realizing zoned heating and dynamic adjustment of the coil state, thereby achieving the effect of improving heating efficiency and safety.

[0125] In order to explain the technical solution of the present application in more detail, the present application also provides a detailed embodiment.

[0126] In one embodiment, in order to solve the problem that the bottom of the pot is not heated uniformly and the heating area cannot be adjusted due to the characteristics of electromagnetic heating itself in the existing single coil pan solution, an electromagnetic heating device is provided for use in Figure 2 The electromagnetic heating device shown in the figure includes a glass panel, a chassis and an operating area. The electromagnetic heating device is arranged in a cavity formed by the glass panel and the chassis, such as Figure 3 As shown, it includes a coil assembly and a power supply, wherein the coil assembly includes a first coil and a second coil, and the first coil and the second coil are arranged concentrically. The following is described by taking the first coil as the inner coil and the second coil as the outer coil as an example:

[0127] like Figure 4 As shown, in the first embodiment, the power supply includes a first power supply and a second power supply, the first coil is connected to the first power supply, and the second coil is connected to the second power supply. By supplying power to the inner coil and the outer coil separately and by enabling or shutting down the first power supply and the second power supply, the functions of inner ring heating, outer ring heating, and simultaneous heating of the inner and outer rings can be realized.

[0128] It is understandable that the coil disk can be divided into more groups of independent coils and connected to the power control board respectively, and each group of coils has an independent high-frequency inverter excitation circuit on the power control board. Through the control circuit, the power supply of each coil disk can be controlled separately, thereby realizing the heating function of different areas of the pot body.

[0129] like Figure 5 and Figure 6 As shown, in the second embodiment, in order to avoid the complexity of multiple control power supplies controlling multiple coils, only some of the coils can be connected to the power supply. Taking the coil assembly including the first coil and the second coil as an example, the first coil is an inner coil with a closed end and no high-frequency power supply, serving as an auxiliary coil, and the second coil is an outer coil with a complete electromagnetic excitation circuit or a high-frequency power supply, serving as the main coil. In some embodiments, the first coil can also be an inner coil with a complete electromagnetic excitation circuit or a high-frequency power supply, and the second coil can be an outer coil with a closed end and no high-frequency power supply. The following embodiments take the first coil as an inner coil with a closed end and no high-frequency power supply as an auxiliary coil, and the second coil as an outer coil with a complete electromagnetic excitation circuit or a high-frequency power supply as the main coil as an example:

[0130] When the high-frequency power supply of the outer coil is turned on, the outer coil will normally heat the upper pot. At the same time, due to the characteristics of electromagnetic induction, it will couple with the inner coil, generating a high-frequency oscillating current of the same frequency in the inner coil, and this high-frequency oscillating current will heat the inner coil of the pot.

[0131] Since the coupled high-frequency current generated by the auxiliary coil is smaller than that of the main coil, the heating power of the outer coil will be higher than that of the inner coil; and if the inner coil is arranged as the main coil, the power of the inner coil will be higher than that of the outer coil.

[0132] Based on the content of the above-mentioned second embodiment, in the third embodiment, the electromagnetic heating device also includes a control component, and the two ends of the first coil can be connected through a first switch. The control component is connected to the first switch and is used to control the first coil to close the first switch when needed. The high-frequency circuit of the main coil drives the auxiliary coil and couples the auxiliary coil to heat the inner and outer circles of the pot body; when not needed, the first switch is disconnected, and the high-frequency power supply of the main coil is turned on. The high-frequency oscillating current of the same frequency cannot be coupled into the auxiliary coil, so only the outside of the pot body is heated, so that the inner coil can be turned on only when needed, thereby improving the flexibility of the electromagnetic heating device.

[0133] like Figure 7 and Figure 8As shown, on the basis of the above first embodiment, in the fourth embodiment, a short circuit is connected in parallel between the first coil and the first power supply, and the first switch is set in the short circuit as a short circuit switch. The electromagnetic heating device also includes a control component. When the control component controls the first power supply to be turned off and the short circuit switch is closed, the first coil serves as an auxiliary coil and responds to the high-frequency circuit of the second coil to drive auxiliary heating. When the control component controls the first power supply to be turned on and the short circuit switch is disconnected, the first coil and the second coil are both main coils and are heated by the first power supply and the second power supply respectively. When both are main coils, the heating power inside and outside is normal heating power. If the inner coil is switched to the auxiliary coil, the inner coil is equivalent to low-power heating. Through this solution, the power of the inner and outer coils can be equivalent, or the power of the inner coil is smaller than that of the outer coil, so that the power switching of the first coil between the main coil and the auxiliary coil can be realized.

[0134] On the basis of the above-mentioned fourth embodiment, in the fifth embodiment, the first coil and the first power supply are also connected through a second switch, and the control component is connected to the second switch. When the control component controls the first switch to be closed, the function of the fourth embodiment can be realized by turning on and off the first switch; when the control component controls the second switch to be open, the function of the third embodiment can be realized by turning on and off the first switch, that is, the auxiliary coil can realize three functional switching of full heating power, auxiliary heating power lower than the main coil, and no power.

[0135] like Figure 8 As shown, on the basis of the fifth embodiment, in the sixth embodiment, a short circuit is provided between the second coil and the second power supply, and a seventh switch is provided in the short circuit, so that both ends of the second coil can be conducted through the seventh switch, the second coil and the second power supply are connected through the eighth switch, the control component is connected to the seventh switch and the eighth switch, when the control component controls the seventh switch to be closed, the head and tail of the second coil are connected, as an auxiliary coil, when the control component controls When the eighth switch is controlled to be closed, the second coil is connected to the second power supply and serves as the main coil. When the first coil and the second coil are both arranged as the fifth embodiment, a heating mode can be achieved in which both coils are main coils, or one is the main coil and the other is the auxiliary coil, or one is the main coil and the other is disconnected, and the two can be switched by controlling the switch to achieve multifunctional switching.

[0136] Based on the sixth embodiment, in the seventh embodiment, the control component switches the heating area on time, the outer coil may be heated and the inner coil is not heated in the first 3 minutes, and the inner coil may be heated and the outer coil is not heated in the next 3 minutes, and the cycle may be repeated; the outer coil may be heated as the main coil and the inner coil as the auxiliary coil in the first 3 minutes, and the inner coil may be heated as the main coil and the outer coil as the auxiliary coil in the next 3 minutes, and the cycle may be repeated.

[0137] The above are two examples. In the actual implementation process, the main coil, auxiliary coil, and non-heating can be switched continuously to achieve the change of the heating area. The 3 minutes is only an example. In actual application, the time may not be fixed.

[0138] like Fig. 9 As shown, based on the seventh embodiment, in the eighth embodiment, the position of the magnetic strip is changed by controlling the control component, so that the inner and outer circles of the pot body can be heated alternately, thereby increasing the cooking frequency.

[0139] The electromagnetic heating device includes a control component 1, a coil component 2, a first magnetic strip component 3, a second magnetic strip component 4, a magnetic strip support 5 and a motor 6, wherein:

[0140] The control component 1 is connected to the coil component 2 and is used to control the on and off of the coil component 2 and the power supply;

[0141] The second magnetic stripe assembly 4 is fixed to the magnetic stripe support 5, that is, fixed to the fixed magnetic stripe bracket; the magnetic stripe support 5 includes a sliding groove 51, and the first magnetic stripe assembly 3 is movably connected to the magnetic stripe support 5 through the sliding groove 51; the motor is connected to the first magnetic stripe assembly 3;

[0142] The control component 1 is also connected to the motor 6 for responding to a heating instruction. When the heating instruction is a position switching instruction, the control motor 6 drives the first magnetic strip component 3 to move to a target position.

[0143] The first magnetic stripe assembly 3 includes a first magnetic stripe 31 and a magnetic stripe bracket 32. The first magnetic stripe 31 is a movable magnetic stripe, and the second magnetic stripe assembly 4 is a fixed magnetic stripe. The fixed magnetic stripe realizes the basic function of gathering magnetic flux lines, so that the coil assembly 2 can work normally and efficiently. The movable magnetic stripe changes the distribution of magnetic flux lines of the coil assembly 2 by moving toward the inner circle and the outer circle, thereby changing the heating position of the pot body, thereby realizing the function of improving the heating efficiency.

[0144] The control component 1 is also used for: when the heating instruction is a position switching instruction, obtaining the current position of the first magnetic stripe component 3; determining the target position of the first magnetic stripe component 3 based on the current position; generating a first motor drive signal based on the current position and the target position; and controlling the motor 6 to drive the first magnetic stripe component 3 to move to the target position based on the first motor drive signal.

[0145] The control component is also used for: when the heating instruction is an alternating heating instruction, generating a second motor drive signal based on the movable range of the first magnetic stripe component 3; based on the second motor drive signal, controlling the motor to drive the first magnetic stripe component 3 to move within the movable range. The movable range of the first magnetic stripe component 3 is the range in the sliding slot 51 within which the first magnetic stripe component 3 can move.

[0146] The electromagnetic heating device includes a plurality of first magnetic stripe assemblies 3, which are radially spaced around the axis of the coil assembly 2; each first magnetic stripe assembly 3 includes a first magnetic stripe 31 and a magnetic stripe bracket 32, that is, a movable magnetic stripe is installed on the movable magnetic stripe bracket, and the movable magnetic stripe bracket moves in and out on the fixed magnetic stripe bracket, that is, the magnetic stripe support 5, through a sliding groove 51; a male plug 321 and a female plug 322 are respectively provided at both ends of each magnetic stripe bracket 32, and each adjacent two first magnetic stripe assemblies 3 are movably connected in the sliding groove 51 through the male plug 321 and the female plug 322, and the movable connection method is as follows Fig.10 The motor 6 is connected to any one of the first magnetic stripe assemblies 3. The multiple magnetic stripe brackets 32 are connected to each other head to tail, and the motor 6 controls one of the magnetic stripe brackets 32 to move inward and outward, thereby driving all the first magnetic stripe assemblies 3 to move inward and outward.

[0147] The electromagnetic heating device comprises a plurality of second magnetic stripe assemblies 4, which are radially spaced around the axis of the coil assembly 2; at least one second magnetic stripe assembly 4 is spaced between any two adjacent first magnetic stripe assemblies 3.

[0148] An electromagnetic heating device provided by the present embodiment is fixed to the magnetic stripe support by a second magnetic stripe assembly, and the first magnetic stripe assembly is movably connected to the magnetic stripe support by a sliding groove; the motor is connected to the first magnetic stripe assembly; the control assembly controls the on and off of the coil assembly and the power supply; in response to a heating instruction, when the heating instruction is a position switching instruction, the control motor drives the first magnetic stripe assembly to move along the sliding groove to the target position, which can realize dynamic adjustment of the heating area, solve the problem of uneven heating of traditional electromagnetic heating devices, and achieve the effect of improving heating efficiency and safety; a first motor drive signal is generated based on the current position and the target position; based on the first motor drive signal, the control motor drives the first magnetic stripe assembly to move to the target position , the first magnetic stripe assembly can be accurately moved to the target position, so as to improve the heating efficiency and safety; by controlling the movement of the first magnetic stripe assembly within the movable range, the heating area can be continuously changed on the entire surface of the pot bottom, thereby improving the uniformity and efficiency of heating, reducing the risk of local overheating caused by fixed heating points, reducing the possibility of liquid splashing, and improving the safety of user use; in the case of multiple first magnetic stripe assemblies, the first magnetic stripe is supported by a magnetic stripe bracket, and the magnetic stripe brackets are movably connected by a male plug and a female plug, so that the multiple first magnetic stripe assemblies can move smoothly in the sliding groove without disengagement, reducing the mechanical complexity and cost, and maintaining the uniformity of the heating mode. The first magnetic stripe assembly and the second magnetic stripe assembly are alternately arranged, and the second magnetic stripe assembly fills the gap between the first magnetic stripe assemblies, ensuring the uniform distribution of the magnetic field on the entire surface of the pot bottom, reducing the heating blind area, and obtaining a dynamic and stable magnetic field environment, which further improves the uniformity of heating. At the same time, by accurately controlling the magnetic field distribution, local overheating can be effectively avoided, the risk of liquid splashing can be reduced, and the safety of use can be improved. The first coil is connected to the power supply through the first switch, and the second coil is closed at the end, so that the second coil can generate the same high-frequency oscillating current while the first coil is heating, so as to heat the metal pot body, and enhance the magnetic field strength and distribution. The heating efficiency is improved, and the effect of improving heating efficiency and safety is achieved; through the setting of the first switch and the second switch, the first coil and the second coil can work together to improve the heating efficiency, and the control component can accurately control the first switch and the second switch to achieve flexible switching between multiple heating modes, adapt to different cooking needs, and achieve the effect of improving heating efficiency and safety; through the independent control of multiple coils, the system allows the system to flexibly adjust the heating mode according to different cooking needs, providing a wider range of heating options, and through the intelligent regulation of the control component, the system can smoothly switch between different heating modes, provide the most suitable heating effect and maintain energy saving, and achieve the effect of improving heating efficiency and safety;By controlling the on and off of the third and fourth switches in turn, the corresponding coils take turns to participate in heating, and the heating resources can be intelligently managed and allocated to ensure that each heating area can obtain appropriate heat, avoiding long-term high-temperature heating at a fixed position and reducing the risk of forming hot spots; by connecting the third and fourth coils to the independent first and second power supplies respectively, the control system can realize independent heating control of each coil, thereby realizing zoned heating and dynamic adjustment of coil status, and achieving the effect of improving heating efficiency and safety. ;

[0149] Each module in the above electromagnetic heating device can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0150] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0151] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0152] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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.

[0153] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An electromagnetic heating device, characterized in that: The electromagnetic heating device comprises a control component, a coil component, a first magnetic strip component, a second magnetic strip component, a magnetic strip support and a motor, wherein: The control component is connected to the coil component and is used to control the on and off of the coil component and the power supply; The second magnetic stripe assembly is fixed to the magnetic stripe support; the magnetic stripe support comprises a sliding slot, and the first magnetic stripe assembly is movably connected to the magnetic stripe support via the sliding slot; the motor is connected to the first magnetic stripe assembly; The control component is also connected to the motor and is used to respond to a heating instruction. When the heating instruction is a position switching instruction, the control component controls the motor to drive the first magnetic stripe component to move to a target position.

2. The electromagnetic heating device according to claim 1, characterized in that: The control component is also used for: When the heating instruction is a position switching instruction, obtaining the current position of the first magnetic stripe assembly; Based on the current position, determining a target position of the first magnetic stripe assembly; Based on the current position and the target position, generating a first motor drive signal; Based on the first motor driving signal, the motor is controlled to drive the first magnetic stripe assembly to move to the target position.

3. The electromagnetic heating device according to claim 1, characterized in that: The control component is also used for: When the heating instruction is an alternating heating instruction, generating a second motor driving signal based on the movable range of the first magnetic strip assembly; Based on the second motor driving signal, the motor is controlled to drive the first magnetic stripe assembly to move within the movable range.

4. The electromagnetic heating device according to claim 1, characterized in that: The electromagnetic heating device comprises a plurality of the first magnetic strip assemblies, which are radially spaced around the axis of the coil assembly; each of the first magnetic strip assemblies comprises a first magnetic strip and a magnetic strip support; A male plug and a female plug are respectively provided at both ends of each magnetic stripe bracket, and every two adjacent first magnetic stripe components are movably connected in the sliding groove through the male plug and the female plug; the motor is connected to any one of the first magnetic stripe components.

5. The electromagnetic heating device according to claim 4, characterized in that: The electromagnetic heating device comprises a plurality of the second magnetic strip assemblies, and the plurality of the second magnetic strip assemblies are radially spaced around the axis of the coil assembly; At least one of the second magnetic stripe assemblies is arranged between any two adjacent first magnetic stripe assemblies.

6. The electromagnetic heating device according to claim 1, characterized in that: The coil assembly includes a first coil, a first switch, and a second coil, wherein the first coil is connected to a power source through the first switch; two ends of the second coil are connected to each other; the first coil and the second coil are concentrically arranged; The control component is connected to the first switch, and is used to control the conduction of the first switch in response to the heating instruction, so that the first coil is connected to the power supply and heated.

7. The electromagnetic heating device according to claim 6, characterized in that: The coil assembly further includes a second switch, and two ends of the second coil are connected via the second switch; The control component is also connected to the second switch, and is used to control the conduction of the second switch and the conduction of the first switch when the heating instruction is an auxiliary heating instruction, so that the first coil is connected to the power supply and heated.

8. The electromagnetic heating device according to claim 1, characterized in that: The coil assembly further includes a third coil, a third switch, a fourth coil and a fourth switch, wherein the third coil is connected to a power source via the third switch; and the fourth coil is connected to a power source via the fourth switch; The control component is connected to the third switch and the fourth switch respectively, and is used to control the conduction of the third switch and / or the fourth switch in response to the heating instruction, so that the third coil and / or the fourth coil are connected to the power supply and heated.

9. The electromagnetic heating device according to claim 8, characterized in that: The control component is also used for: When the heating instruction is an alternating heating instruction, based on a preset interval duration, the third switch and the fourth switch are controlled to be turned on and off in turn, so that the third coil and the fourth coil are heated in turn.

10. The electromagnetic heating device according to claim 8 or 9, characterized in that: The power supply includes a first power supply and a second power supply, the third coil is connected to the first power supply through the third switch, and the fourth coil is connected to the second power supply through the fourth switch.

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