Cooking appliance and control method thereof

Abstract

The application discloses a cooking utensil and a control method thereof, and relates to the technical field of household appliances. The cooking utensil comprises a main body, an electric heating device, an electromagnetic heating device and a control device. The main body comprises a panel. The upper side of the panel is provided with a heating area for placing and heating a pot. The electric heating device is arranged in the main body and comprises at least two heating parts arranged in different zones. The electromagnetic heating device is arranged in the main body and located on the side of the electric heating device which is opposite to the panel. The electromagnetic heating device comprises at least one coil assembly. The control method comprises the following steps: when a heating instruction is received, a heating mode corresponding to the heating instruction is acquired; and according to the heating mode, the heating part and / or the coil assembly are controlled to work at an adaptive heating power. In the technical scheme of the application, the cooking utensil can realize various heating modes under different environmental requirements, thereby providing convenience for users.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a cooking appliance and its control method. Background Technology

[0002] Existing cooking appliances that combine electromagnetic and infrared heating have two heating modes within the same heating zone. There are two main approaches: one is to use electromagnetic and infrared heating in inner and outer rings for mixed heating; this is simple in structure but has poor heating performance. The other is to use infrared and electromagnetic heating in an overlapping manner for mixed heating. Since both the infrared component and the electromagnetic coil component can be set to a heating area that is comparable to the size of the heating zone, single electromagnetic or single infrared heating can achieve high-power heating, or they can be combined to form high-power heating, resulting in better heating performance.

[0003] However, while existing hybrid heating cooking appliances can achieve hybrid heating, their hybrid heating modes are limited, their usage environments are restricted, and their user experience is poor. Summary of the Invention

[0004] The main objective of this invention is to propose a cooking appliance and its control method, aiming to at least solve the technical problems in related technologies, such as the single heating mode of hybrid heating cookers, numerous limitations in the usage environment, and poor user experience.

[0005] To achieve the above objectives, the present invention proposes a control method for a cooking utensil. The cooking utensil includes a main body, an electric heating device, an electromagnetic heating device, and a control device. The main body includes a panel with a heating area on its upper side for placing and heating a pot. The electric heating device is disposed within the main body and includes at least two heating elements arranged in sections. The electromagnetic heating device is disposed within the main body and located on the side of the electric heating device opposite to the panel. The electromagnetic heating device includes at least one coil assembly. The control device is electrically connected to the electric heating device and the electromagnetic heating device and is capable of controlling the at least two heating elements to operate independently.

[0006] The method for controlling the cooking appliance includes the following steps:

[0007] Upon receiving a heating command, the heating mode corresponding to the heating command is obtained;

[0008] According to the heating mode, the heating element and / or the coil assembly are controlled to operate with an appropriate heating power.

[0009] In one embodiment, the heating mode includes an electromagnetic priority mode;

[0010] The step of controlling the heating element and / or the coil assembly to operate with an appropriate heating power according to the heating mode includes:

[0011] When the heating mode is electromagnetic priority mode, the coil assembly is controlled to operate with an appropriate heating power.

[0012] In one embodiment, when the heating mode is electromagnetic priority mode, the step of controlling the coil assembly to operate with an appropriate heating power includes:

[0013] When the heating mode is electromagnetic priority mode, obtain the first required power corresponding to the electromagnetic priority mode;

[0014] When the rated power of the coil assembly is lower than the first required power, the coil assembly is controlled to operate at an appropriate heating power, and the heating element is controlled to operate at a power corresponding to the power difference.

[0015] When the rated power of the coil assembly is greater than the first required power, the coil assembly is controlled to operate at the first required power.

[0016] In one embodiment, the heating mode includes a stir-fry mode, which includes multiple stir-fry stages;

[0017] The step of controlling the heating element and / or the coil assembly to operate with an appropriate heating power according to the heating mode includes:

[0018] When the heating mode is the stir-fry mode, the heating element and / or the coil assembly are controlled to work with the preset heating power and preset working time corresponding to the stir-fry stage, and multiple stir-fry stages are completed in sequence.

[0019] In one embodiment, the two heating elements include a first heating element and a second heating element located around the first heating element;

[0020] The multiple cooking stages include a heating stage, an ingredient-infusing stage, and a stir-frying stage arranged sequentially.

[0021] When the heating mode is the stir-fry mode, the heating element and / or the coil assembly are controlled to operate with a preset heating power and preset working time corresponding to the stir-fry stage, sequentially completing multiple stir-fry stages, specifically including:

[0022] During the hot pot stage, the coil assembly and the second heating element are controlled to operate at a first preset heating power for a first preset time t1 before entering the explosive stage.

[0023] During the bubbling stage, the coil assembly and the second heating element are controlled to operate at a second preset heating power for a second preset time t2 before entering the frying stage.

[0024] During the frying stage, the coil assembly and the second heating element are controlled to operate at a third preset heating power for a third preset time t3.

[0025] In one embodiment, the cooking appliance further includes a temperature detection device for detecting the temperature of the pot body;

[0026] During the heating phase, the step of controlling the coil assembly and the second heating element to operate at a first preset heating power for a first preset time t1 specifically includes:

[0027] The coil assembly and the two heating elements are controlled to operate at a first preset heating power.

[0028] Once the pot body reaches the preset operating temperature, the first heating element is shut off, and the material explosion stage begins.

[0029] In one embodiment, the rated power of the cooking appliance is Pmax, wherein:

[0030] 0.2Pmax≤P1≤0.5Pmax; and / or,

[0031] 0.2Pmax≤P2≤0.5Pmax; and / or,

[0032] 0.5Pmax≤P3≤0.7Pmax; and / or,

[0033] 1min≤t1≤3min; and / or,

[0034] 1min≤t2≤3min; and / or,

[0035] 5min≤t3≤10min.

[0036] In one embodiment, at least one of the coil assemblies includes a first coil assembly and a second coil assembly located around the first coil assembly. The control device is capable of controlling the first coil assembly and the second coil assembly to operate independently. The first heating element and / or the first electromagnetic component constitute an inner heating element, and the second heating element and / or the second electromagnetic component constitute an outer heating element.

[0037] The multiple cooking stages also include a braising stage and a sauce reduction stage, and the heating stage, the sautéing stage, the stir-frying stage, the braising stage and the sauce reduction stage are set in sequence;

[0038] The steps following the frying stage, where the coil assembly and the second heating element are controlled to operate at a third preset heating power for a third preset time t3, include:

[0039] Upon entering the simmering stage, the inner heating unit and the outer heating unit are controlled to work alternately at a fourth preset power for a fourth preset time t4, after which the sauce reduction stage begins.

[0040] During the juice reduction stage, the coil assembly and the second heating element are controlled to operate at a fifth preset power for a fifth preset time t5.

[0041] In one embodiment, the rated power of the cooking appliance is Pmax, wherein:

[0042] 0.2Pmax≤P4≤0.5Pmax; and / or,

[0043] 0.5Pmax≤P5≤Pmax; and / or,

[0044] 5min≤t4≤10min; and / or,

[0045] 1min≤t5≤3min.

[0046] In one embodiment, the cooking appliance further includes a pot having a cooking cavity, and the bottom of the pot extending into the cooking cavity is provided with an annular partition to divide the cooking cavity into a first chamber and a second chamber located outside the first chamber.

[0047] The two heating elements include a first heating element and a second heating element located around the first heating element. At least one coil assembly includes a first coil assembly and a second coil assembly located around the first coil assembly. The control device is capable of controlling the first coil assembly and the second coil assembly to work independently. The first heating element and / or the first electromagnetic assembly constitute an inner heating element, and the second heating element and / or the second electromagnetic assembly constitute an outer heating element. The inner heating element is used to heat the first chamber, and the outer heating element is used to heat the second chamber.

[0048] The heating mode includes a stewing mode;

[0049] The step of controlling the heating element and / or the coil assembly to operate with an appropriate heating power according to the heating mode includes:

[0050] When the heating mode is stewing mode, the inner heating element and the outer heating element are controlled to work alternately with corresponding appropriate heating power; or,

[0051] When the heating mode is stewing mode, the inner heating part and the outer heating part are controlled to work with appropriate heating power, and the ratio between the heating power of the heating part and the heating power of the coil assembly is within a set range.

[0052] The present invention also proposes a cooking utensil, comprising:

[0053] The main body includes a panel, the upper side of which has a heating area;

[0054] An electric heating device is disposed within the main body, and the electric heating device includes at least two heating elements arranged in sections.

[0055] An electromagnetic heating device is disposed within the main body and located on the side of the heating device opposite to the panel; the electromagnetic heating device includes at least one coil assembly; and,

[0056] A control device is electrically connected to the electric heating device and the electromagnetic heating device to control at least two of the heating elements to work independently and to control the electromagnetic heating device to work. The control device includes a memory, a processor, and a control program for the cooking appliance stored in the memory and executable on the processor. The control program for the cooking appliance is configured to implement the steps of the control method for the cooking appliance described above.

[0057] In one embodiment, the cooking appliance further includes a pot for placement in the heating area, the pot having an outwardly extending heating skirt on its wall near the bottom.

[0058] In one embodiment, the projection of the heating skirt in the height direction covers the electric heating device; and / or,

[0059] The heating skirt has a connecting end that connects to the pot wall and a free end that is away from the pot wall, and the heating skirt is gradually set downward in the direction from the connecting end to the free end.

[0060] In one embodiment, the cooking appliance further includes a pot for placement in the heating area, the pot having a cooking cavity, and an annular partition extending from the bottom of the pot toward the cooking cavity to divide the cooking cavity into a first chamber and a second chamber located outside the first chamber.

[0061] In the technical solution of this invention, the cooking appliance includes a main body, an electric heating device, an electromagnetic heating device, and a control device. After the pot is placed on the heating area of ​​the panel, the electric heating device directly transfers heat to the pot. Simultaneously, the coil assembly in the electromagnetic heating device is energized to generate an electromagnetic field. The electromagnetic field generated by the coil assembly can pass upward through the electric heating device to couple with the pot in the heating area, providing electromagnetic heating to the heating area, thereby achieving hybrid heating. Upon receiving a heating command, the heating mode corresponding to the heating command is acquired. Based on the heating mode, the heating element and / or the coil assembly are controlled to operate with an appropriate heating power. This configuration enables the electric heating device and the electromagnetic heating device to work together, allowing the cooking appliance to achieve multiple different heating modes under different environmental requirements through the control of electric and electromagnetic heating, providing convenience for the user. Attached Figure Description

[0062] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0063] Figure 1 A flowchart illustrating the first embodiment of the control method for cooking appliances provided by the present invention;

[0064] Figure 2 A flowchart illustrating a second embodiment of the control method for cooking appliances provided by the present invention;

[0065] Figure 3 A schematic flowchart of a third embodiment of the control method for cooking appliances provided by the present invention;

[0066] Figure 4 A schematic flowchart of the fourth embodiment of the control method for cooking appliances provided by the present invention;

[0067] Figure 5 for Figure 1 A schematic diagram of the control system structure of the hardware operating environment involved in the embodiment of the Chinese version;

[0068] Figure 6 This is a three-dimensional structural diagram of an embodiment of the cooking utensil provided by the present invention;

[0069] Figure 7 for Figure 6 A schematic diagram of the cross-section;

[0070] Figure 8 for Figure 7 An explosion diagram;

[0071] Figure 9 This invention provides a schematic diagram showing the projected areas of the first coil assembly, the first heating element, and the second heating element on the panel.

[0072] Figure 10 This invention provides a schematic diagram showing the projected areas of the second coil assembly, the first heating element, and the second heating element on the panel.

[0073] Figure 11 This is a schematic diagram of another embodiment of the cooking utensil proposed by the present invention;

[0074] Figure 12 This is a schematic diagram of another embodiment of the cooking utensil proposed by the present invention.

[0075] Explanation of icon numbers:

[0076] 100. Cooking appliance; 1. Main body; 11. Panel; 2. Electric heating device; 21. First heating element; 22. Second heating element; 3. Electromagnetic heating device; 31. First coil assembly; 32. Second coil assembly; 4. Control device; 5. Cookware; 51. Cooking cavity; 511. First chamber; 512. Second chamber; 52. Annular partition; 6. Heating skirt.

[0077] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0078] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0079] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0080] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0081] Existing cooking appliances that combine electromagnetic and infrared heating have two heating modes within the same heating zone. There are two main approaches: one is to use electromagnetic and infrared heating in inner and outer rings for mixed heating; this is simple in structure but has poor heating performance. The other is to use infrared and electromagnetic heating in an overlapping manner for mixed heating. Since both the infrared component and the electromagnetic coil component can be set to a heating area that is comparable to the size of the heating zone, single electromagnetic or single infrared heating can achieve high-power heating, or they can be combined to form high-power heating, resulting in better heating performance.

[0082] However, while existing hybrid heating cooking appliances can achieve hybrid heating, their hybrid heating modes are limited, their usage environments are restricted, and their user experience is poor.

[0083] The main objective of this invention is to propose a cooking appliance and its control method, aiming to at least solve the technical problems in related technologies, such as the single heating mode of hybrid heating cookers, numerous limitations in the usage environment, and poor user experience.

[0084] Please see Figure 1 , Figure 6 and Figure 7 In one embodiment of the present invention, the cooking appliance 100 includes a main body 1, an electric heating device 2, an electromagnetic heating device 3, and a control device 4. The main body 1 includes a panel 11, the upper side of which has a heating area for placing and heating a pot 5. The electric heating device 2 is disposed within the main body 1 and includes at least two heating elements arranged in sections. The electromagnetic heating device 3 is disposed within the main body 1 and located on the side of the electric heating device 2 opposite to the panel 11. The electromagnetic heating device 3 includes at least one coil assembly. The control device 4 is electrically connected to the electric heating device 2 and the electromagnetic heating device 3, and is capable of controlling the at least two heating elements to work independently. The control method of the cooking appliance 100 includes the following steps:

[0085] S100: Upon receiving a heating command, obtain the heating mode corresponding to the heating command;

[0086] S200: According to the heating mode, control the heating element and / or the coil assembly to operate with an appropriate heating power.

[0087] In the technical solution of this invention, the cooking appliance 100 is equipped with a main body 1, an electric heating device 2, an electromagnetic heating device 3, and a control device 4. After the pot 5 is placed on the heating area of ​​the panel 11, the electric heating device 2 directly transfers heat to the pot 5. At the same time, the coil assembly in the electromagnetic heating device 3 is energized to generate an electromagnetic field. The electromagnetic field generated by the coil assembly can pass upward through the electric heating device 2 to couple with the pot 5 in the heating area, providing electromagnetic heating function to the heating area, thereby realizing hybrid heating. When a heating command is received, the heating mode corresponding to the heating command is obtained. According to the heating mode, the heating part and / or the coil assembly are controlled to operate with an appropriate heating power. This configuration enables the electric heating device 2 and the electromagnetic heating device 3 to cooperate, so that by controlling the electric heating and electromagnetic heating, the cooking appliance 100 can achieve multiple different heating modes under different environmental requirements, providing convenience for users.

[0088] The electric heating device 2 is limited by its heating orientation. For example, when it is relative to the electromagnetic heating device 3, it cannot be turned on at full power in some scenarios to avoid heat transfer to the electromagnetic heating device 3 and damaging it. For another example, if the size of the cookware 5 is not uniform, there may be heat loss when the electric heating device 2 is not aligned with the cookware 5, and it may even heat the outer wall and handle of the cookware 5, posing a risk of scalding the user. Based on this, this application proposes to set the electric heating device 2 as at least two heating parts to meet different heating needs at different positions of the heating area on the panel 11.

[0089] The main performance characteristics of the cooking appliance 100 are reflected in its heating power and its heating efficiency over the pot 5. When either the electromagnetic heating device 3 or the electric heating device 2 operates alone, the electromagnetic heating device 3 has high heating efficiency, while the electric heating device 2 has low heating efficiency. When both are operating, the heating efficiency falls between the two heating methods, but a relatively high heating power can be achieved. To maximize heating efficiency, in one embodiment of the present invention, please refer to... Figure 2 The heating mode includes an electromagnetic priority mode. Specifically, step S200 includes:

[0090] S210: When the heating mode is electromagnetic priority mode, control the coil assembly to operate with an appropriate heating power.

[0091] In the technical solution of this embodiment, when the heating mode of the cooking appliance 100 is set to the electromagnetic priority mode, the coil assembly is preferentially controlled to work with an appropriate heating power. Since electromagnetic heating utilizes the principle of electromagnetic induction, when alternating current passes through the coil, an alternating magnetic field is generated, causing eddy currents to be generated inside the pot 5. These eddy currents are directly converted into heat energy inside the pot body, reducing the intermediate links of heat conduction or radiation of the electric heating device 2, thereby ensuring heating efficiency.

[0092] It is understood that the rated power of the cooking appliance 100 is the sum of the rated power of the electromagnetic heating device 3 and the rated power of the electric heating device 2. The required power corresponding to the heating command may be less than the rated power of the electromagnetic heating device 3, but it may also be greater than the rated power of the electromagnetic heating device 3. When the required power is greater than the rated power of the electromagnetic heating device 3, the heating demand cannot be met by the electromagnetic heating device 3 alone. In order to meet the heating power demand while ensuring the overall heating efficiency of the cooking appliance 100 as much as possible, step S210 includes:

[0093] S211: When the heating mode is electromagnetic priority mode, obtain the first required power corresponding to the electromagnetic priority mode;

[0094] S212: When the rated power of the coil assembly is lower than the first required power, control the coil assembly to operate at an appropriate heating power, and control the heating element to operate at a power corresponding to the power difference.

[0095] S212': When the rated power of the coil assembly is greater than the first required power, control the coil assembly to operate at the first required power.

[0096] In this embodiment, when the heating mode of the cooking appliance 100 is electromagnetic priority mode, the first required power is compared with the rated power of the coil assembly. If the first required power is lower than the rated power of the coil assembly, the coil assembly only needs to be turned on and operate at the first required power, without the participation of the electric heating device 2, thus ensuring heating efficiency. However, when the first required power is higher than the rated power of the coil assembly, the coil assembly is controlled to operate at full power. That is, the power of the coil assembly is first maximized, and then the power difference of the heating element is controlled to compensate for the power difference. While meeting the power requirement, the power of the coil assembly is maximized as much as possible before considering whether to start the coil assembly, thus ensuring heating efficiency.

[0097] When the heating mode is the electromagnetic priority mode, the heating power can be adjusted midway. For example, before adjusting the power, if the first required power is higher than the rated power of the coil assembly (i.e., both the coil assembly and the heating element are initially set), after receiving the power adjustment command, the second required power corresponding to the power adjustment command is obtained. Then, the second required power is compared with the rated power of the coil assembly. If the second required power is still higher than the rated power of the coil assembly, only the power of the heating element needs to be adjusted. If the second required power is lower than the rated power of the coil assembly, the heating element is directly turned off, and the coil assembly is controlled to operate according to the second required power.

[0098] The power adjustment command can be implemented through the power adjustment key on the panel 11, or it can be remotely controlled through a mobile terminal.

[0099] Table 1 Energy Efficiency Comparison Data Table

[0100]

[0101] Referring to the table above, it can be seen that under the same gear setting, when the heating mode is the electromagnetic priority mode, the heating efficiency is generally improved.

[0102] The electromagnetic priority mode is applicable to, but not limited to, hot pot scenarios. In hot pot scenarios, it is usually necessary to switch back and forth between high and low power. When using the electromagnetic priority mode, the heating efficiency is high, and the energy radiated outward by the heating element is less, so that people around will not feel scorching hot.

[0103] Understandably, the evenness of heating during cooking affects the cooking results and ease of use. For example, when making pancakes, users with rich experience and a full understanding of the heating state of the cooking appliance 100 can artificially ensure that the pancake or the bottom of the pan is heated evenly by frequently flipping the pancake or moving the pan 5. Otherwise, the pancake will be burnt in the high-temperature areas and undercooked in the low-temperature areas; the pancake will have a poor appearance and uneven taste, and the overly burnt areas will also be detrimental to health.

[0104] Therefore, in another embodiment of this application, please refer to Figure 3 The heating mode includes a mixed uniform heating mode, wherein the projection of one of the heating element and the coil assembly in the height direction of the cooking appliance 100 is at least partially located on the periphery of the other; step S200 includes:

[0105] S220: When the heating mode is a mixed uniform heating mode, the heating element and the coil assembly are controlled to work with a corresponding heating power, and the ratio between the heating power of the heating element and the heating power of the coil assembly is A, 0.6≤A≤1.3.

[0106] Please refer to the following: Figure 9 and Figure 10 Since the projection of one of the heating element and the coil assembly in the height direction of the cooking appliance 100 is at least partially located on the periphery of the other, one of them can better heat the bottom of the pot 5, and the other can better heat the wall of the pot 5.

[0107] In the technical solution of the present invention, when the heating mode of the cooking appliance 100 is determined to be the mixed uniform heating mode, the coil assembly and the heating element distributed inside and outside the control device 4 operate. At this time, the independently operating heating element and the coil assembly are at least partially misaligned. Only a portion of the heat generated by the heating element can be conducted to the surface of the coil assembly, thus reducing the impact of the electric heating device 2 on the temperature rise of the coil assembly. Simultaneously, since the preset power ratio of the coil assembly to the heating element is A, 0.6 ≤ A ≤ 1.3, the heating element can superimpose heat on the portion of the heating area where the coil assembly has a lower heating temperature through electric heating, thereby increasing the temperature of that portion in the heating area and maintaining the uniformity of the temperature in the heating area. This maintains a more uniform temperature distribution on the surface of the cookware 5 corresponding to the heating area, enabling uniform and stable heating of that portion of the cookware 5 surface, thereby further expanding the application scenarios of the cooking appliance 100.

[0108] When the coil assembly and the heating element are activated simultaneously, although uniform heating of the cookware 5 can be guaranteed under steady state, the heating of the cookware 5 by the heating element requires heat transfer through the panel 11, and the coil assembly responds very quickly. This results in the temperature of the cookware 5 corresponding to the coil assembly being higher than the temperature corresponding to the heating element in the initial activation phase. To achieve better uniform heating throughout the process, the steps preceding step S220 further include:

[0109] S219: Control the heating element to operate at an appropriate heating power for a certain period of time.

[0110] This setup is equivalent to activating the heating element to raise the temperature of the corresponding position of the pot 5 before controlling the coil assembly and the heating element to work proportionally. Since the coil assembly heats up quickly, the pot 5 can be heated to a uniform temperature very quickly before the coil assembly is activated. Compared to activating the coil assembly and the heating element simultaneously, the temperature of the area of ​​the pot 5 corresponding to the heating element will be lower than the temperature of the area of ​​the coil assembly for a longer period of time. Obviously, activating the heating element first is beneficial to improving the uniformity of heating.

[0111] The power of the heating element when it operates alone is inversely proportional to the time it operates alone.

[0112] When a user uses the cooking appliance 100, the user usually adjusts the heating power of the cooking appliance 100 according to the actual usage scenario. At this time, in order to ensure that the cooking appliance 100 can still ensure uniform heating of the pot 5 within a certain range after the user adjusts the heating power, the steps after step S220 include:

[0113] S221: Upon receiving a power adjustment command, the heating power corresponding to the heating element and the coil assembly is adjusted proportionally.

[0114] Of course, after receiving the power adjustment command, the ratio between the heating power of the heating element and the heating power of the coil assembly can change. Specifically, the steps before step S220 further include:

[0115] S221': Upon receiving an adjustment command, the power ratio of the heating element and the coil assembly is adjusted according to the adjustment command; wherein the adjusted power ratio of the coil assembly and the heating element is B, 0.8A≤B≤1.2A, and 0.6≤B≤1.3.

[0116] In the technical solution of this embodiment, when the heating mode of the cooking appliance 100 is the mixed uniform heating mode, the adjustment command is sent to the cooking appliance 100. The adjustment command can be a power increase adjustment command or a power decrease adjustment command, so as to increase or decrease the power of the cooking appliance 100. After the cooking appliance 100 receives the adjustment command, it can adjust the power of the coil assembly and the heating element according to the adjustment command. At this time, the adjustment range of the power of the coil assembly and the heating element may be different. Therefore, the power ratio of the coil assembly and the heating element may also change. The adjusted power ratio of the coil assembly and the heating element is maintained so that the adjusted power ratio B is between 0.8A and 1.2A, and between 0.6 and 1.3. This configuration ensures the efficiency of the heating element in replenishing the heat to the lower-temperature portion of the coil assembly in the heating area, so that the cooking appliance 100 can maintain a uniform temperature in the heating area even after power adjustment. This, in turn, maintains a more uniform temperature distribution on the surface of the pot 5 corresponding to the heating area, ensuring that the cooking appliance 100 heats a certain area of ​​the surface of the pot 5 evenly and stably.

[0117] In stir-frying scenarios, users need to frequently adjust the position of ingredients to balance the heating effect, which not only prolongs cooking time but also affects the consistency of the dish's taste. Furthermore, over 100 existing cooking appliances rely on users manually adjusting power and heating time, making it difficult for non-professional users to accurately match the heat and time requirements of different cooking stages, thus increasing the difficulty of stir-frying.

[0118] Therefore, in one embodiment of the present invention, please refer to Figure 4 The heating mode includes a stir-fry mode, which includes multiple stir-fry stages; step S200 specifically includes:

[0119] S230: When the heating mode is the stir-fry mode, control the heating element and / or the coil assembly to work with the preset heating power and preset working time corresponding to the stir-fry stage, and sequentially complete multiple stir-fry stages.

[0120] In this embodiment, the cooking process is divided into multiple stages by utilizing the independent and hybrid operation modes of the heating element and the coil assembly, and the matching power and time required for each stage are automatically controlled. This cooking program greatly simplifies the process for users, eliminating the need for frantic manual adjustments of heat and time, and increasing the success rate of cooking.

[0121] Specifically, the two heating elements include a first heating element 21 and a second heating element 22 located around the first heating element 21; the multiple cooking stages include a heating stage, a sautéing stage, and a stir-frying stage arranged sequentially; step S230 specifically includes:

[0122] S231: During the hot pot stage, the coil assembly and the second heating element 22 are controlled to operate at a first preset heating power for a first preset time t1 before entering the explosive stage;

[0123] S232: During the hot pot stage, the coil assembly and the second heating element 22 are controlled to operate at the second preset heating power for a second preset time t2 before entering the stir-frying stage;

[0124] S233: During the frying stage, the coil assembly and the second heating element 22 are controlled to operate at a third preset heating power for a third preset time t3.

[0125] The first heating element 21 is mainly used to heat the bottom of the pot 5, while the second heating element 22 is mainly used to heat the walls of the pot 5. The preheating stage refers to the initial stage of cooking, where the pot 5 is preheated. The aroma-frying stage aims to fry and infuse the spices such as scallions, ginger, garlic, and star anise with their aroma, stimulating appetite. The stir-frying stage refers to the stage of stir-frying the ingredients.

[0126] Specifically, during the preheating stage, the second heating element 22 works in conjunction with the coil assembly to quickly form a uniform heat field in the outer heating area to preheat the pot. After the first preset time is reached, the process switches to the "frying" stage, where the outer heating power is increased to a second preset value and maintained for a second preset time to meet the heat requirements of high-temperature stir-frying. Upon entering the stir-frying stage, the outer heating power is adjusted to a third preset value and maintained for a third preset time. At this time, the first heating element 21 can be selectively activated to supplement the heat in the central area as needed. Through the power combination changes of the coil assembly and the second heating element 22 in the three stages, the heat field distribution of the pot 5 is dynamically adjusted according to the cooking process.

[0127] Compared to existing technologies, traditional cooking appliances typically use a single heating zone or fixed power output during stir-frying, which cannot adapt to the changing heat distribution requirements of different cooking stages. This solution, by configuring the power combination of the peripheral heating zone and the electromagnetic coil in stages, allows the heat field intensity and distribution range to match the stages of heating the pan, stir-frying, and deep-frying, reducing the user's adjustment and control and making stir-frying easier.

[0128] The cooking appliance 100 also includes a temperature detection device for detecting the temperature of the pot body, and step S231 specifically includes:

[0129] S2311: Control the coil assembly and the two heating elements to operate at a first preset heating power;

[0130] S2312: After the temperature of the pot body reaches the preset working temperature, control the first heating element 21 to turn off and enter the explosion stage.

[0131] The temperature detection device refers to a device used to monitor the temperature changes on the surface or inside of the pot in real time. Specifically, it can be implemented using a thermocouple or an infrared sensor. Its function is to provide a temperature feedback signal to achieve dynamic power adjustment.

[0132] In this embodiment, during the initial stage of the hot pot phase, the coil assembly and the two heating elements operate simultaneously, transferring heat from the center and periphery to the pot body at the same time, rapidly evaporating the moisture in the pot 5. When the temperature detection device detects that the pot body temperature has reached the preset operating temperature, the control device 4 immediately cuts off the power supply to the first heating element 21, while allowing the peripheral second heating element 22 and the coil assembly to continue operating. This operating mode achieves dynamic adjustment of heating intensity through temperature feedback, ensuring rapid heating during the hot pot phase while avoiding localized burning due to overheating in the central area, and providing a stable temperature base for subsequent cooking. It achieves precise control of heating power during the hot pot phase, effectively preventing localized overheating of the pot body. The temperature-triggered automatic mode switching mechanism avoids time errors from manual adjustments, improves cooking efficiency, and provides a stable temperature environment for subsequent stages.

[0133] Specifically, the rated power of the cooking appliance 100 is Pmax, wherein 0.2Pmax≤P1≤0.5Pmax; 0.2Pmax≤P2≤0.5Pmax; 0.5Pmax≤P3≤0.7Pmax; 1min≤t1≤3min; 1min≤t2≤3min; 5min≤t3≤10min.

[0134] During the preheating stage, the coil assembly and the second heating element 22 operate at 20%-50% of their rated power for 1-3 minutes, preheating the pot while preventing the pot from overheating and burning during the subsequent cooking process. During the cooking stage, the coil assembly and the second heating element 22 operate at 20%-50% of their rated power for 1-3 minutes, ensuring uniform temperature distribution throughout the pot, enhancing aroma, and reducing the risk of burning. In the stir-frying stage, the power is increased to 50%-70% of the rated power and maintained for 5-10 minutes, ensuring rapid heating and even heat distribution. The time and power ranges at each stage are coordinated to meet the time requirements of the cooking process while avoiding energy waste through power limits.

[0135] Understandably, some dishes require simmering and reducing sauce after stir-frying. In a further embodiment, at least one coil assembly includes a first coil assembly 31 and a second coil assembly 32 located around the first coil assembly 31. The control device 4 can control the first coil assembly 31 and the second coil assembly 32 to work independently. The first heating element 21 and / or the first electromagnetic component constitute the inner heating element, and the second heating element 22 and / or the second electromagnetic component constitute the outer heating element. The multiple stir-frying stages also include a simmering stage and a reducing sauce stage. The hot pan stage, the stir-frying stage, the simmering stage, and the reducing sauce stage are arranged sequentially. The steps after step S233 also include:

[0136] S234: Entering the simmering stage, the inner heating part and the outer heating part are controlled to work alternately at the fourth preset power for a fourth preset time t4, and then the sauce reduction stage is entered;

[0137] S235: During the juice reduction stage, the coil assembly and the second heating element 22 are controlled to operate at a fifth preset power for a fifth preset time t5.

[0138] The inner heating element can be the first heating element 21 alone, the first coil assembly 31 alone, or a combination of the first heating element 21 and the first coil assembly 31. The outer heating element can be the second heating element 22 alone, the second coil assembly 32 alone, or the second heating element 22 and the second coil assembly 32.

[0139] In this embodiment, when the cooking process enters the simmering stage, the inner heating element operates at a fourth preset power for a fixed time and then automatically shuts off. The outer heating element then continues to operate at the same power value, and this process continues cyclically until the fourth preset time ends. This alternating mechanism creates a dynamic heat flow inside the pot, avoiding the bottom gelatinization phenomenon caused by traditional continuous heating. The alternating heat flow also heats the ingredients from multiple directions, improving simmering efficiency and better enhancing the flavor of the food. After entering the reduction stage, the first coil assembly 31 and the second coil assembly 32 are controlled to operate synchronously with the second heating element 22. The high-frequency electromagnetic field generated by the coil assembly rapidly increases the temperature of the bottom of the pot, while the second heating element 22 maintains the uniformity of the temperature of the pot 5. By using a phased power and time control strategy, complex cooking operations are transformed into an automated execution process, ensuring that the thermal parameters of each process accurately match the cooking requirements.

[0140] Specifically, the rated power of the cooking appliance 100 is Pmax, where 0.2Pmax≤P4≤0.5Pmax; 0.5Pmax≤P5≤Pmax; 5min≤t4≤10min; 1min≤t5≤3min.

[0141] During the braising stage, the inner and outer heating elements alternately operate at 20%-50% of their rated power for 5-10 minutes. The relatively low power reduces the rapid hardening of the food surface, allowing heat to penetrate deeply and resulting in more even cooking. This also reduces the likelihood of moisture evaporation causing the food to burn. During the reducing stage, the coil assembly and the second heating element 22 operate at 50%-100% of their rated power for 1-3 minutes. The relatively high power is used for high-heat reducing, which rapidly concentrates and caramelizes the sauce, giving the dish its color, aroma, and flavor.

[0142] In another embodiment, the cooking appliance 100 further includes a pot 5, the pot 5 having a cooking cavity 51, and an annular partition 52 extending from the bottom of the pot 5 into the cooking cavity 51 to divide the cooking cavity 51 into a first chamber 511 and a second chamber 512 located around the first chamber 511; the two heating elements include a first heating element 21 and a second heating element 22 located around the first heating element 21; at least one coil assembly includes a first coil assembly 31 and a second coil assembly 32 located around the first coil assembly 31; the control device 4 is capable of controlling the first coil assembly 31 and the second coil assembly 32 to work independently; the first heating element 21 and / or the first electromagnetic assembly constitutes an inner heating element, and the second heating element 22 and / or the second electromagnetic assembly constitutes an outer heating element; the inner heating element is used to heat the first chamber 511, and the outer heating element is used to heat the second chamber 512; the heating mode includes a stewing mode; the step S200 includes:

[0143] S240: When the heating mode is stewing mode, the inner heating element and the outer heating element are controlled to work alternately with corresponding appropriate heating power; or,

[0144] S240': When the heating mode is stewing mode, the inner heating part and the outer heating part are controlled to work with appropriate heating power, and the ratio between the heating power of the heating part and the heating power of the coil assembly is within a set range.

[0145] The annular partition 52 refers to the annular structure protruding from the bottom of the pot into the cooking cavity 51, which can be made of stainless steel or high-temperature resistant ceramic material, and is used to physically separate the space of the cooking cavity 51. The first chamber 511 refers to the central area enclosed by the annular partition 52, and the second chamber 512 refers to the annular area located outside the annular partition 52. The inner heating part can be the first heating element 21 alone, the first coil assembly 31 alone, or a combination of the first heating element 21 and the first coil assembly 31. The outer heating part can be the second heating element 22 alone, the second coil assembly 32 alone, or the second heating element 22 and the second coil assembly 32.

[0146] In this embodiment, when the stewing mode is activated, the ingredients are mainly concentrated in the first chamber 511, and water can be placed in the second chamber 512. The inner heating part is mainly used to heat the ingredients in the first chamber 511, and the outer heating part is mainly used to heat the water in the second chamber 512. The generated steam enters the first chamber 511 through the annular partition 52 to achieve steam-assisted heating, heating the ingredients from multiple directions and improving the stewing efficiency. At the same time, the steam generated after the water in the second chamber 512 evaporates can replenish the first chamber 511, which can reduce the possibility of the ingredients in the first chamber 511 sticking to the bottom.

[0147] In the heating method, the inner heating section and the outer heating section can work alternately to create a dynamic heat flow inside the pot, further reducing the gelatinization at the bottom caused by continuous heating. Simultaneously, the alternating heat flow can heat the ingredients from multiple directions, improving stewing efficiency and better enhancing the flavor of the food. Alternatively, the power ratio between the inner and outer heating sections can be adjusted.

[0148] Please refer to Figure 6 The present invention also proposes a cooking appliance 100, which includes a main body 1, an electric heating device 2, an electromagnetic heating device 3, and a control device 4. The main body 1 includes a panel 11, and the upper side of the panel 11 has a heating area. The electric heating device 2 is disposed in the main body 1 and includes at least two heating parts arranged in sections. The electromagnetic heating device 3 is disposed in the main body 1 and is located on the side of the electric heating device 2 opposite to the panel 11. The electromagnetic heating device 3 includes at least one coil assembly. The specific embodiments of the electric heating device 2 and the electromagnetic heating device 3 have been described in detail above and will not be repeated here.

[0149] The control device 4 is electrically connected to the electric heating device 2 and the electromagnetic heating device 3, and the control device 4 can control each heating element to work independently. For the implementation of the control method of the cooking appliance 100100 described above, please refer to... Figure 5 The control device 4 includes: a processor 1001, such as a CPU; a communication bus 1002; a user interface 1003; a network interface 1004; and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 1005 may be high-speed RAM or non-volatile memory, such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0150] Those skilled in the art will understand that Figure 5 The structure of the control device 4 shown does not constitute a limitation on the controller. It may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0151] like Figure 5 As shown, the memory 1005, which serves as a computer storage medium, may include an operating system, a network communication module, a user interface module, and a control program for the cooking appliance 100100.

[0152] exist Figure 5 In the controller shown, the processor 1001 calls the control program of the cooking appliance 100 stored in the memory 1005 and executes the control method of the cooking appliance 100.

[0153] It should be noted that the two heating elements include a first heating element 21 and a second heating element 22. In order to ensure that the first heating element 21 and the second heating element 22 can work independently without affecting the other heating element, in a further embodiment of the present invention, the first heating element 21 and the second heating element 22 are arranged in parallel. This arrangement enables the control device 4 to control the first heating element 21 and the second heating element 22 to work independently, thereby ensuring the normal operation of the mixed heating function of the cooking appliance 100.

[0154] Please refer to Figure 7 and Figure 8In an embodiment of the present invention, the first heating element 21 may be annular in shape and disposed around the second heating element 22. This arrangement also improves the heating efficiency of the electric heating device 2.

[0155] It should also be noted that the present invention does not limit the specific number of the heating elements; there may be three, four or even more heating elements.

[0156] When the heating element is working, part of the heat is transferred to the cookware 5 via infrared radiation, and part is transferred to the cookware 5 via heat conduction through the panel 11. Preferably, the diameter of the plurality of heating elements is larger than the diameter of the bottom of the cookware 5. Generally speaking, the bottom diameter of the cookware 5 is 100-180mm, and the diameter of the plurality of heating elements is ≥180mm. The heating area extending beyond the bottom of the cookware 5 can radiate to the pot wall to increase the temperature of the pot wall.

[0157] It is understandable that the heat radiated outward by the heating element can cause the temperature near the cooking appliance 100 to rise, which can cause discomfort to the user, especially in hot pot scenarios where the heating element operates at high power. Therefore, in embodiments of the present invention, please refer to... Figure 11 The cooking appliance 100 also includes a pot 5 for placement in the heating area, wherein the pot 5 has an outwardly extending heating skirt 6 on its wall near the bottom. The heating skirt 6 increases the heat-receiving area of ​​the pot 5, thus better intercepting heat and improving heating efficiency.

[0158] There are several ways to improve the effect of the heated skirt 6.

[0159] In some embodiments, the heating skirt 6 has a connecting end that connects to the pot wall and a free end that is away from the pot wall, and the heating skirt 6 is gradually downwardly arranged in the direction from the connecting end to the free end; in some embodiments, the projection of the heating skirt 6 in the height direction covers the electric heating device 2. This arrangement can increase the surface area of ​​the heating skirt 6 and reduce heat loss.

[0160] Furthermore, a heat-absorbing coating can be applied to the lower surface of the heated skirt 6.

[0161] In one embodiment of the present invention, please continue to refer to Figure 9 and Figure 10The coil assembly includes a first coil assembly 31. The projection of the second heating element 22 in the height direction of the cooking appliance 100 is at least partially located around the first coil assembly 31, that is, the first coil assembly 31 and the second heating element 22 are offset. With this arrangement, if the cooking appliance 100 needs to perform mixed heating, the control device 4 can control the first coil assembly 31 to work. The electromagnetic field generated by the first coil assembly 31 can be directed upwards around the second heating element 22 to couple with the pot 5 in the heating area, providing electromagnetic heating function to the heating area. Since the first coil assembly 31 and the second heating element 22 are offset, only a small portion of the heat generated by the second heating element 22 will be conducted to the first coil assembly 31, which will not cause a sharp increase in the temperature of the first coil assembly 31. This can further improve the heating efficiency of the cooking appliance 100 while ensuring the service life of the first coil assembly 31.

[0162] It is understood that the first coil assembly 31 is composed of multiple turns of coil wound together. This invention does not limit the arrangement of the multiple turns of coil in the first coil assembly 31. In one embodiment of this invention, the first coil assembly 31 includes multiple turns of coil arranged in layers along the vertical direction. This arrangement, since the multiple turns of coil are all arranged vertically, reduces the horizontal space occupied by the first coil assembly 31, thereby reducing the horizontal size of the cooking appliance 100 and optimizing the miniaturization of the cooking appliance 100.

[0163] In another embodiment of the present invention, the first coil assembly 31 includes multiple turns of coil arranged in layers from the inside out. With this arrangement, all the multiple turns of coil are on the same horizontal plane, and since the first coil assembly 31 is arranged at least upwards to correspond to the heating area, the multiple turns of the first coil assembly 31 are all located close to the heating area of ​​the panel 11. When the control device 4 controls the first coil assembly 31 to operate, the first coil assembly 31 can further improve the electromagnetic heating efficiency, thereby improving the heating efficiency of the cooking appliance 100.

[0164] In one embodiment of the present invention, the coil assembly includes a second coil assembly 32, which is located around the first coil assembly 31. The projection of the first heating element 21 in the height direction of the cooking appliance 100 is at least partially located around the second coil assembly 32, that is, the second coil assembly 32 and the first heating element 21 are offset from each other. With this arrangement, if the cooking appliance 100 needs to perform mixed heating, the control device 4 can control the second coil assembly 32 to work. The electromagnetic field generated by the second coil assembly 32 can be directed upward around the first heating element 21 to couple with the pot 5 in the heating area, providing electromagnetic heating function to the heating area. Since the second coil assembly 32 and the first heating element 21 are offset from each other, only a small portion of the heat generated by the first heating element 21 will be conducted to the second coil assembly 32, which will not cause a sharp increase in the temperature of the second coil assembly 32. This can further improve the heating efficiency of the cooking appliance 100 while ensuring the service life of the second coil assembly 32.

[0165] The second coil assembly 32 includes multiple turns of coil arranged in layers along the vertical direction. This arrangement, with all turns of coil arranged vertically, reduces the horizontal space occupied by the second coil assembly 32, thereby reducing the horizontal size of the cooking appliance 100, optimizing its miniaturization, and allowing for better coupling with the pot wall of the cookware 5.

[0166] Stewing is a common cooking method. When stewing, it is usually done over low heat to reduce the risk of food not being fully cooked or burning at the bottom due to high heat. However, stewing over low heat requires a longer time.

[0167] Therefore, in one embodiment of the present invention, please refer to Figure 12 The cooking appliance 100 also includes a pot 5 for placement in the heating area. The pot 5 has a cooking cavity 51. The bottom of the pot 5 extends into the cooking cavity 51 and is provided with an annular partition 52 to divide the cooking cavity 51 into a first chamber 511 and a second chamber 512 located around the first chamber 511.

[0168] The annular partition 52 refers to the annular structure protruding from the bottom of the pot into the cooking cavity 51. It can be made of stainless steel or high-temperature resistant ceramic material and is used to physically separate the space of the cooking cavity 51. The first chamber 511 refers to the central area enclosed by the annular partition 52, and the second chamber 512 refers to the annular area located outside the annular partition 52.

[0169] In this embodiment, when the stewing process is started, the ingredients are placed in the first chamber 511, and water is added to the second chamber 512. When the electromagnetic heating device 3 and the electric heating device 2 are working, they simultaneously heat the first chamber 511 and the second chamber 512. The electromagnetic heating device 3 and the electric heating device 2 heat the ingredients in the first chamber 511, primarily transferring heat to the bottom of the ingredients. However, as the water in the second chamber 512 evaporates into steam, the steam flows to the first chamber 511, heating the top of the ingredients. This achieves a simultaneous stewing and steaming heating method, improving heating efficiency. At the same time, the replenishment of steam to the first chamber 511 also reduces the possibility of the bottom sticking to the bottom.

[0170] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for controlling a cooking utensil, characterized in that, The cooking appliance includes a main body, an electric heating device, an electromagnetic heating device, and a control device. The main body includes a panel with a heating area on the upper side for placing and heating cookware. The electric heating device is located inside the main body and includes at least two heating elements arranged in sections. The electromagnetic heating device is located inside the main body and on the side opposite to the panel. The electromagnetic heating device includes at least one coil assembly. The control device is electrically connected to the electric heating device and the electromagnetic heating device and is capable of controlling the at least two heating elements to work independently. The method for controlling the cooking appliance includes the following steps: Upon receiving a heating command, the heating mode corresponding to the heating command is obtained; According to the heating mode, the heating element and / or the coil assembly are controlled to operate with an appropriate heating power.

2. The control method for cooking appliances as described in claim 1, characterized in that, The heating mode includes an electromagnetic priority mode; The step of controlling the heating element and / or the coil assembly to operate with an appropriate heating power according to the heating mode includes: When the heating mode is electromagnetic priority mode, the coil assembly is controlled to operate with an appropriate heating power.

3. The control method for cooking appliances as described in claim 2, characterized in that, When the heating mode is electromagnetic priority mode, the step of controlling the coil assembly to operate with an appropriate heating power includes: When the heating mode is electromagnetic priority mode, obtain the first required power corresponding to the electromagnetic priority mode; When the rated power of the coil assembly is lower than the first required power, the coil assembly is controlled to operate at an appropriate heating power, and the heating element is controlled to operate at a power corresponding to the power difference. When the rated power of the coil assembly is greater than the first required power, the coil assembly is controlled to operate at the first required power.

4. The control method for cooking appliances as described in claim 1, characterized in that, The heating mode includes a stir-fry mode, which includes multiple stir-fry stages; The step of controlling the heating element and / or the coil assembly to operate with an appropriate heating power according to the heating mode includes: When the heating mode is the stir-fry mode, the heating element and / or the coil assembly are controlled to work with the preset heating power and preset working time corresponding to the stir-fry stage, and multiple stir-fry stages are completed in sequence.

5. The control method for cooking appliances as described in claim 4, characterized in that, The two heating elements include a first heating element and a second heating element located around the first heating element; The multiple cooking stages include a heating stage, an ingredient-infusing stage, and a stir-frying stage arranged sequentially. When the heating mode is the stir-fry mode, the heating element and / or the coil assembly are controlled to operate with a preset heating power and preset working time corresponding to the stir-fry stage, sequentially completing multiple stir-fry stages, specifically including: During the hot pot stage, the coil assembly and the second heating element are controlled to operate at a first preset heating power for a first preset time t1 before entering the explosive stage. During the bubbling stage, the coil assembly and the second heating element are controlled to operate at a second preset heating power for a second preset time t2 before entering the frying stage. During the frying stage, the coil assembly and the second heating element are controlled to operate at a third preset heating power for a third preset time t3.

6. The method for controlling a cooking appliance as described in claim 5, characterized in that, The cooking appliance also includes a temperature detection device for detecting the temperature of the pot body; During the heating phase, the step of controlling the coil assembly and the second heating element to operate at a first preset heating power for a first preset time t1 specifically includes: The coil assembly and the two heating elements are controlled to operate at a first preset heating power. Once the pot body reaches the preset operating temperature, the first heating element is shut off, and the material explosion stage begins.

7. The method for controlling a cooking appliance as described in claim 5, characterized in that, The rated power of the cooking appliance is Pmax, where: 0.2Pmax≤P1≤0.5Pmax; and / or, 0.2Pmax≤P2≤0.5Pmax; and / or, 0.5Pmax≤P3≤0.7Pmax; and / or, 1min≤t1≤3min; and / or, 1min≤t2≤3min; and / or, 5min≤t3≤10min.

8. The method for controlling a cooking appliance as described in claim 5, characterized in that, At least one of the coil assemblies includes a first coil assembly and a second coil assembly located around the first coil assembly. The control device is capable of controlling the first coil assembly and the second coil assembly to work independently. The first heating element and / or the first electromagnetic component constitute an inner heating element, and the second heating element and / or the second electromagnetic component constitute an outer heating element. The multiple cooking stages also include a braising stage and a sauce reduction stage, and the heating stage, the sautéing stage, the stir-frying stage, the braising stage and the sauce reduction stage are set in sequence; The steps following the frying stage, where the coil assembly and the second heating element are controlled to operate at a third preset heating power for a third preset time t3, include: Upon entering the simmering stage, the inner heating unit and the outer heating unit are controlled to work alternately at a fourth preset power for a fourth preset time t4, after which the sauce reduction stage begins. During the juice reduction stage, the coil assembly and the second heating element are controlled to operate at a fifth preset power for a fifth preset time t5.

9. The method for controlling a cooking appliance as described in claim 8, characterized in that, The rated power of the cooking appliance is Pmax, where: 0.2Pmax≤P4≤0.5Pmax; and / or, 0.5Pmax≤P5≤Pmax; and / or, 5min≤t4≤10min; and / or, 1min≤t5≤3min.

10. The control method for a cooking appliance as described in claim 1, characterized in that, The cooking appliance also includes a pot, which has a cooking cavity. The bottom of the pot extends into the cooking cavity and is provided with an annular partition to divide the cooking cavity into a first chamber and a second chamber located outside the first chamber. The two heating elements include a first heating element and a second heating element located around the first heating element. At least one coil assembly includes a first coil assembly and a second coil assembly located around the first coil assembly. The control device is capable of controlling the first coil assembly and the second coil assembly to work independently. The first heating element and / or the first electromagnetic assembly constitute an inner heating element, and the second heating element and / or the second electromagnetic assembly constitute an outer heating element. The inner heating element is used to heat the first chamber, and the outer heating element is used to heat the second chamber. The heating mode includes a stewing mode; The step of controlling the heating element and / or the coil assembly to operate with an appropriate heating power according to the heating mode includes: When the heating mode is stewing mode, the inner heating part and the outer heating part are controlled to work alternately with an appropriate heating power. or, When the heating mode is stewing mode, the inner heating part and the outer heating part are controlled to work with appropriate heating power, and the ratio between the heating power of the heating part and the heating power of the coil assembly is within a set range.

11. A cooking utensil, characterized in that, include: The main body includes a panel, the upper side of which has a heating area; An electric heating device is disposed within the main body, and the electric heating device includes at least two heating elements arranged in sections. An electromagnetic heating device is disposed within the main body and located on the side of the heating device opposite to the panel; the electromagnetic heating device includes at least one coil assembly; and, A control device is electrically connected to the electric heating device and the electromagnetic heating device to control at least two of the heating elements to operate independently and to control the operation of the electromagnetic heating device. The control device includes a memory, a processor, and a control program for the cooking appliance stored in the memory and executable on the processor. The control program for the cooking appliance is configured to implement the steps of the control method for the cooking appliance as described in any one of claims 1 to 10.

12. The cooking appliance as described in claim 11, characterized in that, The cooking appliance also includes a pot for placement in the heating area, the pot having an outwardly extending heating skirt on its wall near the bottom.

13. The cooking appliance as described in claim 12, characterized in that, The projection of the heating skirt in the height direction covers the electric heating device; and / or, The heating skirt has a connecting end that connects to the pot wall and a free end that is away from the pot wall, and the heating skirt is gradually set downward in the direction from the connecting end to the free end.

14. The cooking appliance as described in claim 11, characterized in that, The cooking appliance also includes a pot for placement in the heating area, the pot having a cooking cavity, and an annular partition extending from the bottom of the pot toward the cooking cavity to divide the cooking cavity into a first chamber and a second chamber located outside the first chamber.

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