A cooking machine with a double-area electromagnetic heating structure

Abstract

The utility model provides a kind of cooking machine with double-area electromagnetic heating structure, comprising: support assembly, the support assembly includes: disc, annular frame and multiple arc-shaped supports;Annular frame is located above disc and annular frame diameter is greater than disc diameter;First heating component, including coiled in the first wiring area first coil, two ends of the first coil are connected and controlled to first control switch;The first control switch controls first coil to connect or disconnect alternating current;Second heating component, including coiled in the second wiring area second coil;Wherein, in the state that only first coil connects alternating current, form the first heating area of smaller heating area;In the case that first coil, second coil all connect alternating current, form the second heating area of larger heating area.This flexible heating mode can adapt to different application scenarios and heating requirements, greatly improve the versatility and practicality of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of electromagnetic heating in cooking machines, and in particular to a cooking machine with a dual-zone electromagnetic heating structure. Background Technology

[0002] Common heating methods for cooking machines include electromagnetic heating and electric heating tube heating. Electromagnetic heating can heat the pot to a high temperature in a short time, greatly shortening the cooking time. Compared with other heating methods, it can save a lot of electricity. It can precisely adjust the heating power and temperature to meet the strict requirements of different dishes for heat control, which helps to produce high-quality dishes. Therefore, it is widely used in the cooking process of cooking machines.

[0003] The existing electromagnetic coil structure has the following technical problems: 1. Limited scope of use: When heating, the existing cookware is only suitable for heating food in a single area. It cannot change the heating area according to the actual needs such as the amount of food, and cannot adapt to flexible working environments. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by this utility model is to provide a cooking machine with a dual-zone electromagnetic heating structure, which solves the problems of limited application range and high heating power consumption of existing electromagnetic heating cooking machines.

[0005] To solve the above-mentioned technical problems, this utility model provides a cooking machine with a dual-zone electromagnetic heating structure, comprising:

[0006] A support assembly includes: a disc, a ring frame, and multiple arc-shaped supports; the ring frame is located above the disc and its diameter is larger than that of the disc; the multiple arc-shaped supports are evenly distributed along the circumference of the disc, with one end abutting the disc and the other end abutting the ring frame; wherein, with a predetermined height as a boundary, the wire groove below the boundary forms a first wiring area, and the wire groove above the boundary forms a second wiring area;

[0007] The first heating component includes a first coil wound around the first wiring area, the two ends of the first coil being connected to and controlled by a first control switch; the first control switch controls the first coil to connect or disconnect AC power.

[0008] The second heating component includes a second coil wound in the second wiring area, the two ends of the second coil being connected to and controlled by a second control switch; the second control switch controls the second coil to connect or disconnect AC power.

[0009] Specifically, when only the first coil is energized with AC power, a first heating area with a small heating area is formed; when both the first and second coils are energized with AC power, a second heating area with a large heating area is formed.

[0010] As a preferred approach, each arc-shaped support is equipped with protrusions at different elevations, and grooves for winding coils are formed between adjacent protrusions on the same arc-shaped support. The groove design allows the coils to be neatly wound between the protrusions, simplifying installation and operation. The protrusions also act as retainers for the coils wound in the grooves, preventing displacement or loosening due to electromagnetic vibrations, temperature changes, or other factors when energized. Furthermore, the protrusions increase the structural strength of the arc-shaped support, improving its bending resistance; when supporting the entire electromagnetic heating structure, the distribution of the protrusions effectively disperses stress, enhancing the stability of the arc-shaped support and ensuring the overall structural safety of the equipment.

[0011] As a more preferred approach, an electromagnetic shield is provided between the first coil and the second coil. Since the alternating electromagnetic fields generated between the first and second heating components can interfere with each other, affecting normal operation, the electromagnetic shield can confine the electromagnetic fields generated by the first and second coils within different wiring areas, reducing electromagnetic leakage to different wiring areas, thereby reducing interference during the electromagnetic heating process and improving the electromagnetic compatibility of the entire working environment.

[0012] As a more preferred approach, the electromagnetic shielding component is made of ferrite material to shield the magnetic field interference of the first heating region on the magnetic field of the second heating region. Ferrite material maintains excellent shielding performance. During electromagnetic heating, the frequency of the magnetic field generated by the coil may change at different operating stages and under different load conditions. The ferrite electromagnetic shielding component can efficiently shield the magnetic field interference of the first heating region on the second heating region, ensuring that the magnetic fields of the two heating regions are relatively independent and do not interfere with each other. This helps improve the accuracy and uniformity of heating, avoids problems such as localized overheating or underheating caused by magnetic field interference, and ensures the stability and reliability of the entire heating process.

[0013] As a preferred approach, multiple slots on the same arc-shaped support are arranged at equal intervals. This equal-interval arrangement ensures that the first and second coils are uniformly distributed on the arc-shaped support. When alternating current is applied to the coils to generate an electromagnetic field, the uniform distribution of the coils allows the electromagnetic field to be distributed more evenly throughout the heating area. Furthermore, a uniform magnetic field distribution helps improve the efficiency of converting electrical energy into heat energy. Because the magnetic field is uniform, the magnetic medium surrounding the coil (such as an iron cookware) can interact more fully with the magnetic field, reducing energy waste. This helps to shorten heating time and reduce energy consumption.

[0014] As a preferred approach, at least one set of adjacent arc-shaped supports is provided with a cooling cavity. The cooling cavity serves as a heat dissipation channel, rapidly carrying away the heat generated by the coil through air convection. This effectively reduces the temperature of the coil and the entire heating structure, preventing damage from prolonged overheating of the coil, ensuring stable equipment operation, and helping to extend the equipment's lifespan. Furthermore, with cooling cavities evenly distributed between multiple sets of adjacent arc-shaped supports, heat can be evenly distributed, preventing heat accumulation in localized areas and thus preventing localized overheating.

[0015] As a more preferred embodiment, the central axis of the cooling cavity intersects the center of the disk. Because the central axis of the cooling cavity intersects the center of the disk, and is distributed radially around the disk, the cooling effect between adjacent arc-shaped supports is more uniform across the entire heating structure; heat can be dissipated more evenly from the center outwards, avoiding localized overheating or underheating. For example, when electromagnetic heating equipment such as a stir-fry machine is running, the heat generated by the coils in all directions can be dissipated more efficiently through the cooling cavity, reducing the temperature around the entire heating area and helping to maintain a stable heating environment.

[0016] As a more preferred approach, the first coil has fewer turns than the second coil. The first coil is required for the formation of both the first and second heating regions, so its usage frequency is higher than that of the second coil. Therefore, designing the first coil to have fewer turns than the second coil can achieve energy savings to some extent.

[0017] As a more preferred approach, a first temperature sensor is installed in the first wiring area, and a second temperature sensor is installed in the second wiring area. The first temperature sensor can detect the temperature change in the first wiring area when the first coil is working; in different heating modes, such as when only the first coil is working to form a first heating area, or when the first coil and the second coil are working simultaneously to form a second heating area. By setting up the first and second temperature sensors, it is possible to better adapt to various heating modes, monitor temperature changes in different modes in real time, and ensure the stability and controllability of the heating process.

[0018] As a preferred embodiment, the disc and ring frame of the support assembly are made of stainless steel. Stainless steel has high strength and hardness, enabling it to withstand various external forces during the use of the cooking machine. Furthermore, stainless steel has good toughness; slight vibrations may occur when the internal coils are energized, and the stainless steel material can effectively absorb and buffer these vibrations, reducing their impact on other components and extending the service life of the cooking machine.

[0019] As described above, the stir-fry machine with a dual-zone electromagnetic heating structure of this invention has the following beneficial effects: When in use, the stir-fry machine with a dual-zone electromagnetic heating structure, by setting a first heating component and a second heating component, and independently controlling them by a first control switch and a second control switch respectively, can achieve multiple heating modes. When only the first coil is connected, a first heating zone with a small heating area is formed, suitable for heating small, localized areas and applicable to small quantities of food. When both the first and second coils are simultaneously connected to AC power, a second heating zone with a larger heating area is formed, which can meet the heating needs of a larger area and is applicable to larger quantities of food. This flexible heating mode can adapt to different application scenarios and heating requirements, greatly improving the versatility and practicality of the equipment.

[0020] The support assembly of this invention consists of a disc, a ring frame, and multiple arc-shaped supports. This structural design provides stable support for the entire electromagnetic heating structure. The arc-shaped supports are evenly distributed along the circumference of the disc, with one end abutting the disc and the other end abutting the ring frame, forming a stable ring support system; reducing vibration and deformation, thereby ensuring the stability and reliability of the heating process.

[0021] This invention allows for independent control of two heating zones, enabling the corresponding coils to be turned on or off according to actual needs, thus avoiding unnecessary energy consumption, improving energy efficiency, and reducing operating costs. Attached Figure Description

[0022] Figure 1 The diagram shown is an overall structural schematic of the dual-region electromagnetic heating structure of this utility model.

[0023] Figure 2 The diagram shown is a schematic representation of the overall structure of the support component of this utility model.

[0024] Figure 3 Displayed as Figure 2 Cross-sectional view at point A in the middle;

[0025] Figure 4 The diagram shown is a top view of the support component of this utility model.

[0026] Figure 5 The diagram shown is a structural schematic of the dual-zone electromagnetic heating structure of this utility model with heating components installed.

[0027] Figure 6 The diagram shows the intersection of the central axes of the cooling cavity of this utility model.

[0028] Figure 7 The diagram shown is a coil circuit diagram of the heating component of this utility model.

[0029] Component designation explanation

[0030] 1 cookware 3 Heating components 31 First heating component 311 First coil 312 First temperature sensor 32 Second heating component 321 Second coil 322 Second temperature sensor 4 Support components 41 Protrusion 42 cable tray 43 Cooling chamber 44 Arc-shaped bracket 45 disc 46 Circular frame 5 Electromagnetic shielding components X1 First central axis X2 Second central axis Detailed Implementation

[0031] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0032] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terminology used herein is for describing specific embodiments only and is not intended to limit this application. Spatial terms such as "upper," "lower," "left," "right," "below," "below," "lower part," "above," "upper part," etc., may be used in the text to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "holding" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, operation, element, component, item, kind, and / or group, but do not preclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, or operations are inherently mutually exclusive in some manner.

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit the utility model.

[0036] like Figures 1 to 7 As shown, this utility model provides a cooking machine with a dual-zone electromagnetic heating structure, comprising:

[0037] Support component 4 includes: a disc 45, a ring frame 46, and a plurality of arc-shaped supports 44; the ring frame 46 is located above the disc 45 and the diameter of the ring frame 46 is larger than the diameter of the disc 45; the plurality of arc-shaped supports 44 are evenly distributed along the circumference of the disc 45, with one end abutting the disc 45 and the other end abutting the ring frame 46; wherein, with a predetermined height as the boundary, the wire groove 42 located below the boundary forms a first wiring area, and the wire groove 42 located above the boundary forms a second wiring area;

[0038] The first heating component 31 includes a first coil 311 wound around the first wiring area. The two ends of the first coil 311 are connected to and controlled by a first control switch (not shown). The first control switch controls the first coil 311 to connect or disconnect AC power.

[0039] The second heating component 32 includes a second coil 321 wound around the second wiring area. The two ends of the second coil 321 are connected to and controlled by a second control switch. The second control switch controls the second coil 321 to connect or disconnect AC power (e.g., AC power). Figure 7 The circuit diagram shown is as follows: AC power is AC mains power, the switch is a power control switch, L1 is the first coil 311, and L2 is the second coil 321.

[0040] Specifically, when only the first coil 311 is energized with AC power, a first heating area with a small heating area is formed; when both the first coil 311 and the second coil 321 are energized with AC power, a second heating area with a large heating area is formed.

[0041] To better illustrate the dual-zone electromagnetic heating structure of this invention, the following specific application will be used as an example: In use, the dual-zone electromagnetic heating structure of this invention, by setting up a first heating component 31 and a second heating component 32, and independently controlling them with a first control switch and a second control switch respectively, can achieve multiple heating modes. When only the first coil 311 is connected, a first heating zone with a smaller heating area is formed, suitable for heating small, localized areas. When both the first coil 311 and the second coil 321 are simultaneously connected to AC power, a second heating zone with a larger heating area is formed, which can meet the heating needs of a wider area. This flexible heating mode can adapt to different application scenarios and heating requirements, greatly improving the versatility and practicality of the equipment.

[0042] The support component 4 of this invention consists of a disc 45, a ring frame 46, and multiple arc-shaped supports 44. This structural design provides stable support for the entire electromagnetic heating structure. The arc-shaped supports 44 are evenly distributed around the circumference of the disc 45, with one end abutting against the disc 45 and the other end abutting against the ring frame 46, forming a stable ring support system; reducing vibration and deformation, thereby ensuring the stability and reliability of the heating process. In a specific embodiment, the outer ring of the disc 45 serves as the boundary, with the area above the outer ring of the disc 45 being the second wiring area formed by the second coil 321, and the area inside the outer ring of the disc 45 being the first wiring area formed by the first coil 311. More preferably, each arc-shaped support 44 is arranged with long supports and short supports alternately, that is, a longer arc-shaped support 44 is flanked by shorter arc-shaped supports 44, and a shorter arc-shaped support 44 is flanked by longer arc-shaped supports 44. This is because the area of ​​the first heating zone, which is composed of the first wiring area, is relatively small. If a long arc-shaped support 44 is used, it will interfere with the cooling cavity 43 within the first heating zone, reducing the heat dissipation area and decreasing the cooling effect on the first coil 311 after it has been working. This invention, by independently controlling the two heating zones, can turn the corresponding coils on or off according to actual needs, avoiding unnecessary energy consumption, thereby improving energy utilization efficiency and reducing operating costs.

[0043] In some embodiments of this utility model, such as Figures 1 to 4As shown, each arc-shaped support 44 has protrusions 41 at different heights, and grooves 42 for winding coils are formed between adjacent protrusions 41 on the same arc-shaped support 44. The design of the grooves 42 allows the coils to be neatly wound between the protrusions 41, making installation simple and operation convenient. The protrusions 41 can limit the coils wound in the grooves 42, preventing displacement or loosening of the coils due to electromagnetic vibration, temperature changes, or other factors when energized. For example, when the electromagnetic heating equipment is working, the coils will generate high-frequency vibrations. Without effective fixing measures, the coils may shift, resulting in uneven electromagnetic field distribution and affecting the heating effect. The protrusions 41 can firmly fix the coils in the grooves 42, ensuring their positional stability and guaranteeing the stability of the heating process. In addition, the protrusions 41 can increase the structural strength of the arc-shaped support 44 and improve its bending resistance; when supporting the entire electromagnetic heating structure, the distribution of the protrusions 41 can effectively disperse stress, enhance the stability of the arc-shaped support 44, and ensure the overall structural safety of the equipment.

[0044] In some embodiments of this utility model, such as Figures 1 to 5 As shown, an electromagnetic shield 5 is provided between the first coil 311 and the second coil 321. Since the alternating electromagnetic fields generated between the first heating component 31 and the second heating component 321 can interfere with each other, affecting normal operation, the electromagnetic shield 5 can confine the electromagnetic fields generated by the first coil 311 and the second coil 321 within different wiring areas, reducing electromagnetic leakage to different wiring areas, thereby reducing interference during the electromagnetic heating process and improving the electromagnetic compatibility of the entire working environment. Furthermore, the electromagnetic shield 5 can effectively block electromagnetic coupling between the two coils, ensuring that the magnetic field generated by each coil is relatively independent, maintaining the stability of the magnetic field in the heating area, and improving heating efficiency and quality.

[0045] In some embodiments of this utility model, such as Figure 5 As shown, the electromagnetic shielding component 5 is made of ferrite material to shield the magnetic field interference of the first heating region on the magnetic field of the second heating region. Ferrite material can maintain good shielding effect over a wide frequency range (e.g., 10kHz~300MHz). During electromagnetic heating, the frequency of the magnetic field generated by the coil may change under different operating stages and load conditions. The ferrite electromagnetic shielding component 5 ensures that the magnetic fields of the two heating regions are relatively independent and do not interfere with each other, which helps improve the accuracy and uniformity of heating, avoids local overheating or underheating caused by magnetic field interference, and ensures the stability and reliability of the entire heating process.

[0046] In some embodiments of this utility model, such as Figures 1 to 5As shown, multiple slots 42 on the same arc-shaped support 44 are arranged at equal intervals. The equally spaced slots 42 ensure that the first coil 311 and the second coil 321 are uniformly distributed on the arc-shaped support 44. When alternating current is applied to the coils to generate an electromagnetic field, the uniformly distributed coils allow the electromagnetic field to be distributed more evenly throughout the heating area. For example, a uniform magnetic field ensures that the electromagnetic induction intensity at various locations on the bottom of the cookware 1 is similar, thereby achieving uniform heating and avoiding localized overheating or underheating, thus improving heating quality. Furthermore, a uniform magnetic field distribution helps improve the efficiency of converting electrical energy into heat energy. Because the magnetic field is uniform, the magnetic medium surrounding the coil (e.g., the iron cookware 1) can interact more fully with the magnetic field, reducing energy waste. This helps to shorten heating time and reduce energy consumption.

[0047] In some embodiments of this utility model, such as Figures 1 to 4 As shown, at least one set of adjacent arc-shaped supports 44 is provided with a cooling cavity 43. The cooling cavity 43 can serve as a heat dissipation channel, quickly removing the heat generated by the coil through air convection, effectively reducing the temperature of the coil and the entire heating structure, preventing the coil from being damaged by excessively high temperatures over a long period of time, ensuring stable operation of the equipment, and helping to extend the service life of the equipment. In addition, when cooling cavities 43 are evenly arranged between multiple sets of adjacent arc-shaped supports 44, heat can be evenly distributed, avoiding heat accumulation in local areas, thereby preventing local overheating. It should be understood that the number of cooling cavities 43 in this embodiment of the utility model is not limited. For cost considerations, only one cooling cavity 43 may be provided, that is, only one set of adjacent arc-shaped supports 44 is provided with a cooling cavity 43, and other sets of adjacent arc-shaped supports 44 are not provided with cooling cavities 43. Alternatively, to achieve better cooling effect, multiple cooling chambers 43 can be provided. For example, cooling chambers 43 can be provided between each group of adjacent arc-shaped supports 44, or cooling chambers 43 can be provided between some adjacent arc-shaped supports 44, or multiple cooling chambers 43 can be provided between each group of adjacent arc-shaped supports 44.

[0048] In some embodiments of this utility model, such as Figure 6 As shown, the central axis of the cooling cavity 43 intersects the center of the disk 45. Because the central axis of the cooling cavity 43 intersects the center of the disk 45, and is radially distributed around the disk 45, the cooling effect between adjacent arc-shaped supports 44 is more uniform across the entire heating structure; heat can be dissipated more evenly from the center outwards, avoiding excessive or insufficient local heat dissipation. For example, when electromagnetic heating equipment such as a stir-fry machine is running, the heat generated by the coils in all directions can be dissipated more efficiently through the cooling cavity 43, reducing the temperature gradient around the entire heating area and helping to maintain a stable heating environment.

[0049] In some embodiments of this utility model, such as Figure 5 As shown, the number of turns in the first coil 311 is less than the number of turns in the second coil 321. The first coil 311 is required for the formation of both the first and second heating regions, so its usage frequency is higher than that of the second coil 321. Therefore, designing the number of turns in the first coil 311 to be less than that in the second coil 321 can achieve energy-saving effects to a certain extent.

[0050] In some embodiments of this utility model, such as Figure 5 As shown, the first wiring area is equipped with a first temperature sensor 312 located within the disk 45 (preferably positioned at the center of the disk 45 for better temperature sensing), and the second wiring area is equipped with a second temperature sensor 322 located within the support assembly 4. The first temperature sensor 312, located within the disk 45, senses the temperature change in the disk 45 area when the first coil 311 is operating; this temperature change represents the overall temperature trend of the first heating area. The second temperature sensor 322, located at any position within the support assembly 4, effectively monitors the temperature of the second coil 321's operating area, ensuring accurate acquisition of the true temperatures of both heating areas and preventing temperature data deviations due to inappropriate monitoring positions, thus providing a reliable basis for controlling the heating process. In different heating modes, such as only the first coil 311 operating to form the first heating area, or both the first coil 311 and the second coil 321 operating simultaneously to form the second heating area, the use of the first temperature sensor 312 and the second temperature sensor 322 allows for better adaptation to various heating modes, real-time monitoring of temperature changes under different modes, and ensures the stability and controllability of the heating process.

[0051] In some embodiments of this utility model, such as Figure 4 and Figure 6 As shown, the disc 45 and ring frame 46 of the support assembly 4 are made of stainless steel. Stainless steel has high strength and hardness, enabling it to withstand various external forces during the use of the cooking machine. Furthermore, stainless steel has good toughness; slight vibrations may occur when the internal coil is energized, and the stainless steel material can effectively absorb and buffer these vibrations, reducing their impact on other components and extending the service life of the cooking machine. For example, when placing the pot 1, the weight of the pot 1 will exert pressure on the support assembly 4. The stainless steel material ensures that the disc 45 and ring frame 46 will not easily deform, thus ensuring the structural stability of the support assembly 4 and providing reliable support for the entire cooking machine.

[0052] In summary, the cooking machine with a dual-zone electromagnetic heating structure of this invention has the following advantages:

[0053] 1. Flexibility and adaptability:

[0054] By independently controlling the first heating component 31 and the second heating component 32, a first heating area and a second heating area with different heating areas are formed respectively. This can heat a small local area as well as meet the heating needs of a large area, adapt to different application scenarios and heating requirements, and improve the versatility and practicality of the equipment.

[0055] 2. High stability and good reliability:

[0056] The support assembly 4 consists of a disc 45, a ring frame 46, and multiple arc-shaped supports 44. The arc-shaped supports 44 are evenly distributed around the disc 45, and their two ends abut against the disc 45 and the ring frame 46 respectively, forming a stable ring support system. When subjected to electromagnetic force and other external forces during the heating process, it can maintain good stability, reduce vibration and deformation, and ensure a stable and reliable heating process.

[0057] 3. High heating efficiency and low power consumption:

[0058] The two heating zones can be independently controlled, allowing for precise activation or deactivation of the corresponding coils according to actual needs, thus avoiding unnecessary energy consumption, improving energy efficiency, and reducing operating costs.

[0059] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0060] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A cooking machine with a dual-zone electromagnetic heating structure, characterized in that, include: A support assembly includes: a disc, a ring frame, and multiple arc-shaped supports; the ring frame is located above the disc and its diameter is larger than that of the disc; the multiple arc-shaped supports are evenly distributed along the circumference of the disc, with one end abutting the disc and the other end abutting the ring frame; wherein, with a predetermined height as a boundary, the wire groove below the boundary forms a first wiring area, and the wire groove above the boundary forms a second wiring area; The first heating component includes a first coil wound around the first wiring area, the two ends of the first coil being connected to and controlled by a first control switch; the first control switch controls the first coil to connect or disconnect AC power. The second heating component includes a second coil wound in the second wiring area, the two ends of the second coil being connected to and controlled by a second control switch; the second control switch controls the second coil to connect or disconnect AC power. Specifically, when only the first coil is energized with AC power, a first heating area with a small heating area is formed; when both the first and second coils are energized with AC power, a second heating area with a large heating area is formed.

2. A cooking machine with a dual-zone electromagnetic heating structure according to claim 1, characterized in that: Each arc-shaped support has protrusions at different heights, and grooves for winding coils are provided between adjacent protrusions on the same arc-shaped support.

3. A cooking machine with a dual-zone electromagnetic heating structure according to claim 1, characterized in that: An electromagnetic shield is provided between the first coil and the second coil.

4. A cooking machine with a dual-zone electromagnetic heating structure according to claim 3, characterized in that: The electromagnetic shielding component is made of ferrite material to shield the magnetic field of the first heating region from interference with the magnetic field of the second heating region.

5. A cooking machine with a dual-zone electromagnetic heating structure according to claim 1, characterized in that: Multiple grooves on the same arc-shaped bracket are arranged at equal intervals.

6. A cooking machine with a dual-zone electromagnetic heating structure according to claim 1, characterized in that: At least one set of adjacent arc-shaped supports is provided with a cooling cavity.

7. A cooking machine with a dual-zone electromagnetic heating structure according to claim 6, characterized in that: The central axis of the cooling cavity intersects the center of the disk.

8. A cooking machine with a dual-zone electromagnetic heating structure according to claim 1, characterized in that: The number of turns in the first coil is less than the number of turns in the second coil.

9. A cooking machine with a dual-zone electromagnetic heating structure according to claim 1, characterized in that: The first wiring area is provided with a first temperature sensor located inside the disk, and the second wiring area is provided with a second temperature sensor located inside the support assembly.

10. A cooking machine with a dual-zone electromagnetic heating structure according to claim 1, characterized in that: The disc and ring frame of the support assembly are made of stainless steel.

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