Electromagnetic heating device, cooking appliance and cover thereof, control method and control device, storage medium

Abstract

The application discloses an electromagnetic heating device, a cooking utensil and a cover body thereof, a control method and a control device, and a storage medium. The electromagnetic heating device comprises an electromagnetic heating assembly and at least one shielding assembly. The shielding assembly is located at a side of the electromagnetic heating assembly and has a shielding state and a non-shielding state. When the shielding assembly is in the shielding state, the electromagnetic heating assembly can be electromagnetically shielded. When the shielding assembly is in the non-shielding state, the electromagnetic heating assembly can be electromagnetically heated. By arranging the shielding assembly, the electromagnetic heating device can electromagnetically heat or electromagnetically shield the side. When the electromagnetic heating device is applied to the cooking utensil, the cooking mode of the cooking utensil is increased, and the function of the cooking utensil is increased.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic heating equipment, specifically to an electromagnetic heating device, a lid of a cooking utensil, a cooking utensil and a control method for the cooking utensil, a control device for the cooking utensil, and a non-transient computer-readable storage medium. Background Technology

[0002] In some cases, heating the lid of a cooking appliance involves heating the movable lid to prevent condensation, or the lid uses infrared radiation to supplement the cooking cavity, typically with relatively low heating power. However, with the increasing demand for multi-functional integration, developing products that accommodate more cooking modes while maintaining the original cooking effect, and addressing issues such as numerous cooking appliances, excessive space occupation, low resource utilization, and limited functionality, has become an urgent problem to solve. Summary of the Invention

[0003] The main objective of this invention is to provide an electromagnetic heating device that can electromagnetically heat or shield different locations. When applied to cooking appliances, this electromagnetic heating device increases the cooking modes and functions of the appliances.

[0004] To achieve the above objectives, the technical solutions of the embodiments of the present invention are as follows:

[0005] An electromagnetic heating device, comprising:

[0006] Electromagnetic heating components; and

[0007] At least one shielding component is located on the side of the electromagnetic heating component and has a shielded state and an unshielded state.

[0008] When the shielding component is in the shielded state, it can electromagnetically shield the electromagnetic heating component; when the shielding component is in the unshielded state, the electromagnetic heating component can perform electromagnetic heating.

[0009] A lid for a cooking utensil, comprising:

[0010] Cover body; and

[0011] The aforementioned electromagnetic heating device is installed on the cover body.

[0012] A cooking utensil, comprising:

[0013] Pot body; and

[0014] The lid of the aforementioned cooking utensil is fitted onto the pot body.

[0015] A method for controlling a cooking appliance, wherein the lid of the cooking appliance includes an electromagnetic heating device, the electromagnetic heating device including an electromagnetic heating component and at least one shielding component;

[0016] The control method includes:

[0017] Determine whether the preset electromagnetic heating start-up conditions are met;

[0018] Based on the fulfillment of the electromagnetic heating start-up conditions, the shielding component is controlled to be in an unshielded state, and the electromagnetic heating component is controlled to start heating.

[0019] In this embodiment of the invention, the electromagnetic heating component of the electromagnetic heating device is provided with a shielding component on its side. When the shielding component is in a shielded state, it can electromagnetically shield the electromagnetic heating component, preventing magnetic leakage on the side where the shielding component is in a shielded state and thus avoiding safety issues. When the shielding component is in an unshielded state, the electromagnetic heating component can electromagnetically heat the side where the shielding component is in an unshielded state.

[0020] A control device for a cooking appliance includes a processor and a memory storing a computer program, wherein the processor executes the computer program to implement the control method described above.

[0021] A non-transient computer-readable storage medium storing a computer program that can run on a processor, wherein the computer program, when executed by the processor, implements the control method described above.

[0022] The solution of this invention provides a shielding component on the side of the electromagnetic heating component that can switch between a shielded and unshielded state, thereby controlling the electromagnetic heating component to perform electromagnetic heating or electromagnetic shielding. When this electromagnetic heating component is applied to a cooking appliance, it can be installed on the lid of the cooking appliance, enabling the lid to have electromagnetic heating functionality. This increases the cooking modes of the cooking appliance, allowing it to perform more cooking functions, which helps reduce the number of cooking appliances required and avoids the problems of large space occupation, high resource utilization, and high cost caused by too many cooking appliances. Attached Figure Description

[0023] 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.

[0024] Figure 1This is a schematic diagram of the structure of a cooking utensil according to an embodiment of the present invention;

[0025] Figure 2 This is a three-dimensional schematic diagram of a partial structure of the cooking utensil according to an embodiment of the present invention;

[0026] Figure 3 for Figure 2 Enlarged schematic diagram of part A;

[0027] Figure 4 for Figure 2 A top-view structural diagram;

[0028] Figure 5 This is a top view of the electromagnetic heating device of a cooking appliance according to an embodiment of the present invention, wherein the shielding component located on the upper side is in a shielding state;

[0029] Figure 6 This is a top view of the electromagnetic heating device of a cooking appliance according to an embodiment of the present invention, wherein the shielding component located on the upper side is in an unshielded state;

[0030] Figure 7 This is a bottom view of the electromagnetic heating device of a cooking appliance according to an embodiment of the present invention, wherein the shielding component located on the lower side is in a shielding state;

[0031] Figure 8 This is a bottom view of the electromagnetic heating device of a cooking appliance according to an embodiment of the present invention, wherein the shielding component located on the lower side is in an unshielded state;

[0032] Figure 9 This is a three-dimensional schematic diagram of a partial structure of a cooking utensil according to another embodiment of the present invention;

[0033] Figure 10 for Figure 9 A top-view structural diagram;

[0034] Figure 11 This is a top view of the electromagnetic heating device of a cooking appliance according to another embodiment of the present invention, wherein the shielding component located on the upper side is in a shielding state;

[0035] Figure 12 This is a top view of the electromagnetic heating device of a cooking appliance according to another embodiment of the present invention, wherein the shielding component located on the upper side is in an unshielded state;

[0036] Figure 13 This is a bottom view of the electromagnetic heating device of a cooking appliance according to another embodiment of the present invention, wherein the shielding component located on the lower side is in a shielding state;

[0037] Figure 14 This is a bottom view of the electromagnetic heating device of a cooking appliance according to another embodiment of the present invention, wherein the shielding component located on the lower side is in an unshielded state;

[0038] Figure 15 This is a flowchart of a control method for a cooking appliance according to an embodiment of the present invention;

[0039] Figure 16 This is a flowchart of a control method for a cooking appliance according to another embodiment of the present invention;

[0040] Figure 17 This is a flowchart of a control method for a cooking appliance according to another embodiment of the present invention.

[0041] The attached figures are labeled as follows:

[0042] 1-Electromagnetic heating assembly; 2, 2'-Shielding assembly; 21-Mounting bracket; 22, 22'-Shielding element; 23, 23'-Connecting rod; 24, 24'-Rotating shaft; 3, 3'-Power unit; 31, 31'-Power element; 32, 32'-Drive gear; 33, 33'-Driven gear ring; 41-First temperature sensor; 42-Second temperature sensor; 5-Lid body; 50-Lid body; 51-Cooking zone; 6-Pot body; 61-Display panel.

[0043] 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

[0044] 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.

[0045] like Figure 1 As shown, this embodiment of the invention provides an electromagnetic heating device that can be installed on the lid 5 of a cooking appliance. This electromagnetic heating device can be applied not only to cooking appliances but also to other devices that require electromagnetic heating.

[0046] like Figures 2-14 As shown, the electromagnetic heating device is configured to include: an electromagnetic heating component 1 and at least one shielding component. The shielding component is located on the side of the electromagnetic heating component 1 and has a shielded state and an unshielded state. When the shielding component is in the shielded state, it can electromagnetically shield the electromagnetic heating component 1; when the shielding component is in the unshielded state, the electromagnetic heating component 1 can perform electromagnetic heating.

[0047] The electromagnetic heating assembly 1 can be provided with two shielding components, 2 and 2', located on the first and second sides of the assembly 1 respectively, and both have shielded and unshielded states. Of course, one or more shielding components can also be provided.

[0048] In this electromagnetic heating device, shielding components 2 and 2' are respectively provided on the first and second sides of the electromagnetic heating component 1, such as... Figure 5 , Figure 7 , Figure 11 and Figure 13 As shown, when shielding components 2 and 2' are in a shielded state, they can electromagnetically shield the electromagnetic heating component 1, preventing magnetic leakage on the side where shielding components 2 and 2' are located, thus avoiding safety issues. Figure 6 , Figure 8 , Figure 12 and Figure 14 As shown, when the shielding components 2 and 2' are in an unshielded state, the electromagnetic heating component 1 can electromagnetically heat the side where the shielding components 2 and 2' are located. This electromagnetic heating device can achieve individual heating of the first side or the second side, or simultaneous heating of the first side and the second side.

[0049] By installing shielding components 2 and 2' on different sides of the electromagnetic heating component 1, which can switch between shielded and unshielded states, the electromagnetic heating component 1 can be controlled to perform electromagnetic heating or electromagnetic shielding on different sides. This allows for electromagnetic shielding of the side that does not require heating, preventing safety issues caused by magnetic leakage. When applied to cooking appliances, the electromagnetic heating component 1 can be installed on the lid 50 of the cooking appliance, enabling the lid 5 to have electromagnetic heating functionality. This increases the cooking modes of the cooking appliance, allowing it to perform more cooking functions. This helps reduce the number of cooking appliances required and avoids problems such as large space occupation, high resource utilization, and high costs caused by too many cooking appliances.

[0050] In some exemplary embodiments, the first side and the second side of the electromagnetic heating component 1 are opposite sides. For example, the first side may be the upper side of the electromagnetic heating component 1, and the second side may be the lower side of the electromagnetic heating component 1, that is, shielding components 2 and 2' are respectively provided on the upper and lower sides of the electromagnetic heating component 1. Wherein, for example... Figure 5 and Figure 11 As shown, when the upper shielding component 2 is in a shielded state, the electromagnetic heating component 1 cannot heat the upper side; as Figure 6 and Figure 12 As shown, when the upper shielding component 2 is in an unshielded state, the electromagnetic heating component 1 can heat the upper side; as Figure 7 and Figure 13As shown, when the shielding component 2' on the lower side is in a shielded state, the electromagnetic heating component 1 cannot heat the lower side; as Figure 8 and Figure 14 As shown, when the shielding component 2' on the lower side is in an unshielded state, the electromagnetic heating component 1 can heat the lower side.

[0051] It should be understood that the first side and the second side are not limited to being opposite sides, but can also be set as adjacent sides.

[0052] In some exemplary embodiments, the electromagnetic heating device is configured to further include a power device, which is configured to be connected to the shielding assembly and capable of driving the shielding assembly to move to switch between a shielded state and an unshielded state.

[0053] The power unit can be connected to the shielding component and can drive the shielding component to move, so that the rotation of the shielding component can change, so that the shielding component can switch between shielded and unshielded states, thereby controlling the electromagnetic heating component to heat the first and second sides.

[0054] In some exemplary embodiments, such as Figure 5 and Figure 6 As shown, the shielding assembly 2 includes a mounting frame 21, multiple shielding elements 22 and multiple connecting rods 23. The multiple shielding elements 22 are arranged circumferentially along the mounting frame 21 and are rotatably connected to the mounting frame 21. The multiple connecting rods 23 correspond one-to-one with the multiple shielding elements 22, and the first end of the multiple connecting rods 23 is connected to the corresponding shielding element 22, and the second end of each is connected to the power device 3.

[0055] In shielding assembly 2, mounting bracket 21 serves as a mounting base for mounting and supporting shielding elements 22. Multiple shielding elements 22 are evenly arranged along the circumference of mounting bracket 21 and rotatably connected to it via rotating shaft 24. One end of multiple connecting rods 23 is connected to each shielding element 22 in a corresponding manner, and the other end is connected to a power device 3. The power device 3 drives the multiple connecting rods 23 to move, and the multiple connecting rods 23 can drive the multiple shielding elements 22 to rotate around their respective rotating shafts 24, allowing the multiple shielding elements 22 to rotate to... Figure 5 The shielding state is shown; the power unit 3 can also drive multiple shielding elements 22 to rotate in opposite directions around their rotation axis 24 via multiple connecting rods 23, so that the multiple shielding elements 22 can rotate to Figure 6 The unshielded state is shown.

[0056] like Figure 7 and Figure 8As shown, the structure of shielding assembly 2' can be configured to be the same as that of shielding assembly 2. Shielding assembly 2' may include a mounting frame, multiple shielding elements 22', and multiple connecting rods 23'. The multiple shielding elements 22' are arranged circumferentially along the mounting frame and rotatably connected to the mounting frame. The multiple connecting rods 23' correspond one-to-one with the multiple shielding elements 22', and the first end of each of the multiple connecting rods 23' is connected to the corresponding shielding element 22', and the second end of each is connected to a power device. The power device can drive the multiple shielding elements 22' to rotate around their respective pivot axes 24' through the multiple connecting rods 23', so that the multiple shielding elements 22' can rotate to Figure 7 The shielding status shown or Figure 8 The unshielded state is shown.

[0057] The shielding elements 22 and 22' can be sheet-like shielding blades or plate-like shielding plates, and the shielding blades or shielding plates can be made of metal. Of course, the shielding elements 22 and 22' are not limited to shielding blades or shielding plates, and can also be in other forms, such as magnetic strips.

[0058] In some exemplary embodiments, the power unit is configured to include a power element and a transmission mechanism, the transmission mechanism including a driving gear and a driven gear ring, the driving gear being mounted to the output shaft of the power element and meshing with the driven gear ring, and the second ends of a plurality of connecting rods being connected to the driven gear ring.

[0059] In the power unit, the power element can drive the drive gear to rotate, which in turn drives the driven gear ring to rotate. The driven gear ring can drive multiple connecting rods to move, which in turn drives multiple shielding elements to rotate to the shielded state. The power element can also drive the drive gear to rotate in the opposite direction, so that multiple shielding elements can rotate to the unshielded state.

[0060] In some exemplary embodiments, such as Figures 2-8 As shown, a power unit is provided. The power unit 3 includes a power element 31 and two transmission mechanisms. The power element 31 is connected to two shielding components 2 and 2' respectively through the two transmission mechanisms.

[0061] The power unit 3 includes a power element 31 and two transmission mechanisms. One transmission mechanism includes a driving gear 32 and a driven gear ring 33, and the other transmission mechanism includes a driving gear 32' and a driven gear ring 33'. The driving gears 32 and 32' of both transmission mechanisms are connected to the power element 31. The driven gear ring 33 of one transmission mechanism is connected to multiple connecting rods 23 of the shielding assembly 2, and the driven gear ring 33' of the other transmission mechanism is connected to multiple connecting rods 23' of the shielding assembly 2'. This allows the power element 31 to drive the two shielding assemblies 2 and 2' to move synchronously or asynchronously through the two transmission mechanisms. The entire outer circumference of the driven gear rings 33 and 33' may be provided with teeth, or a portion of the outer circumference of the driven gear rings 33 and 33' may be provided with teeth.

[0062] The power unit 3 has a simplified structure, smaller size, and lower cost.

[0063] like Figure 3 As shown, the power element 31 may include a motor, which drives two driving gears 32 and 32' to rotate. The two driving gears 32 and 32' mesh with two driven gear rings 33 and 33', respectively. The connecting rods 23 and 23' of the two shielding components 2 and 2' are respectively connected to the two driven gear rings 33 and 33', so that the driven gear rings 33 and 33' drive the shielding elements 22 and 22' to move through the connecting rods 23 and 23'. By rotating the motor in both directions, the shielding components 2 and 2' can be switched between shielded and unshielded states.

[0064] In other exemplary embodiments, such as Figures 9-14 As shown, there are two power units, and the two power units 3 and 3' are connected to the two shielding components 2 and 2' in a one-to-one correspondence.

[0065] Two power units 3 and 3' are respectively connected to two shielding components 2 and 2', so that the two power units 3 and 3' can control the movement of the two shielding components 2 and 2' respectively, so that the movement of the two shielding components 2 and 2' is independent of each other. This makes it easy to control any shielding component 2 or 2' to be in a shielded or unshielded state as needed, and to facilitate the control of the electromagnetic heating component 1 to perform electromagnetic heating on different positions.

[0066] like Figures 9-12 As shown, a power unit 3 includes a power element 31 and a transmission mechanism. The power element 31 may include a motor, and the transmission mechanism may include a meshing drive gear 32 and a driven gear ring 33. Multiple connecting rods 23 of a shielding assembly 2 are all connected to the driven gear ring 33. Figures 13-14 As shown, another power unit 3' includes a power element 31' and a transmission mechanism. The power element 31' may include a motor, and the transmission mechanism may include a meshing drive gear 32' and a driven gear ring 33'. A plurality of links 23' of another shielding assembly 2' are all connected to the driven gear ring 33'.

[0067] In some exemplary embodiments, the power unit includes a power output element, which is a power output element capable of rotation or translation, and the power output element is connected to the shielding components 2, 2'.

[0068] Figures 5-8 , Figures 11-14In the illustrated embodiment, the driven gear rings 33 and 33' are rotatable power output elements that can drive the shielding elements 22 and 22' of the shielding assemblies 2 and 2' to rotate around their axes 24 and 24'; or, the power unit 3 includes an electromagnetic drive element (not shown), which may include a reciprocating push rod that is a translatable power output element that can be connected to the shielding elements of the shielding assemblies 2 and 2' and drive the shielding elements of the shielding assemblies 2 and 2' to reciprocate, thereby enabling the shielding assemblies 2 and 2' to switch between shielded and unshielded states.

[0069] In some exemplary embodiments, the power unit includes a power output element, the shielding assembly is a retractable shielding assembly, the power output element is connected to the shielding assembly and configured to drive the shielding assembly to extend or retract.

[0070] The retractable shielding assembly may include multiple shielding elements connected in sequence, and each shielding element may slide relative to adjacent shielding elements, so that the shielding assembly may extend to be in a shielded state, or the shielding assembly may retract to be in a non-shielded state.

[0071] It should be understood that the power element of the power unit is not limited to a motor, but may also include other elements, such as an electromagnetic drive element or an air pump; the shielding components 2 and 2' may include multiple shielding elements 22 and 22', which are rotatable or translatable, so that the shielding components 2 and 2' can switch between a shielded state and an unshielded state; or, the shielding component may include a single shielding element that is rotatable or translatable, so that the shielding component can switch between a shielded state and an unshielded state.

[0072] In some exemplary embodiments, such as Figures 5-6 , Figures 11-12 As shown, the electromagnetic heating device is configured to further include a first temperature sensor 41, which is located on the first side of the electromagnetic heating assembly 1, and the shielding assembly 2 located on the first side of the electromagnetic heating assembly 1 is provided with a clearance hole to avoid the first temperature sensor 41.

[0073] A first temperature sensor 41 is provided on the first side of the electromagnetic heating assembly 1. The first temperature sensor 41 can measure the temperature when the electromagnetic heating assembly 1 heats the first side, so as to control the shielding assembly 2 on the first side to switch between a shielded state and an unshielded state based on the temperature measurement result of the first temperature sensor 41. The shielding assembly 2 on the first side of the electromagnetic heating assembly 1 is provided with a clearance hole, so that one end of the first temperature sensor 41 can be installed on the electromagnetic heating assembly 1, and the other end can pass through the clearance hole and extend out of the electromagnetic heating device, so that the first temperature sensor 41 can measure the temperature.

[0074] The clearance hole can be located at the center of the shielding component 2 on the first side. When the shielding component 2 is in the shielding state, the gap at the center position forms a clearance hole to avoid the first temperature sensor 41.

[0075] In some exemplary embodiments, such as Figures 7-8 , Figures 13-14 As shown, the electromagnetic heating device is configured to further include a second temperature sensor 42, which is located on the second side of the electromagnetic heating assembly 1, and the shielding assembly 2' located on the second side of the electromagnetic heating assembly 1 is provided with a clearance hole to avoid the second temperature sensor 42.

[0076] A second temperature sensor 42 is provided on the second side of the electromagnetic heating assembly 1. The second temperature sensor 42 can measure the temperature when the electromagnetic heating assembly heats the second side, so as to control the shielding assembly 2' on the second side to switch between a shielded state and an unshielded state based on the temperature measurement result of the second temperature sensor 42. The shielding assembly 2' on the second side of the electromagnetic heating assembly 1 is provided with a clearance hole, so that one end of the second temperature sensor 42 can be installed on the electromagnetic heating assembly 1, and the other end can pass through the clearance hole and extend out of the electromagnetic heating device, so that the second temperature sensor 42 can measure the temperature.

[0077] The clearance hole can be located at the center of the shielding component 2' on the second side. When the shielding component 2' is in the shielding state, the gap at the center position forms a clearance hole to avoid the second temperature sensor 42.

[0078] It should be understood that one of the first temperature sensor 41 and the second temperature sensor 42 may be provided, or multiple sensors may be provided as needed.

[0079] In some exemplary embodiments, the electromagnetic heating device is configured to further include a side shield (not shown), which is annular and located between two shielding components 2, 2', and the electromagnetic heating component 1 is placed within the cavity formed by the two shielding components 2, 2' and the side shield.

[0080] The shielding component 2 on the first side and the shielding component 2' on the second side are arranged opposite each other. The side shield is disposed between the two shielding components 2 and 2', so that the two shielding components 2 and 2' and the side shield cooperate to form a cavity inside, in which the electromagnetic heating component 1 can be disposed. The side shield prevents magnetic leakage from the side of the electromagnetic heating device.

[0081] In some exemplary embodiments, the electromagnetic heating assembly 1 is configured to include an electromagnetic coil, which is either planar spiral (i.e., each spiral coil is located at the same axial height) or three-dimensional spiral (i.e., each spiral coil is located at a different axial height).

[0082] When the electromagnetic coil is in a planar spiral shape, only two opposing shielding components 2 and 2' can be provided, with the electromagnetic coil located between the two shielding components 2 and 2'; or, two opposing shielding components 2 and 2' and a side shield can be provided, with the electromagnetic coil placed in the cavity enclosed by the two shielding components 2 and 2' and the side shield.

[0083] When the electromagnetic coil is in a three-dimensional spiral shape, two opposing shielding components 2, 2' and a side shield can be set up, and the electromagnetic coil can be placed in the cavity formed by the two shielding components 2, 2' and the side shield.

[0084] like Figure 1 As shown, this embodiment of the invention also provides a lid 5 for a cooking utensil, including a lid body 50 and an electromagnetic heating device provided in any of the above embodiments, wherein the electromagnetic heating device is installed on the lid body 50.

[0085] The lid 5 of the cooking appliance includes a lid body 50 and an electromagnetic heating device. The electromagnetic heating device is installed inside the lid body 50 to achieve the heating function of the lid 5. The electromagnetic heating device can heat different parts of the lid 5, which increases the functionality of the lid 5 and allows the cooking appliance to take on more cooking functions. This helps to reduce the number of cooking appliances required and avoids problems such as large space occupation, high resource utilization, and high cost caused by too many cooking appliances.

[0086] In some exemplary embodiments, such as Figure 1 and Figure 2 As shown, the upper surface of the cover body 50 is provided with a cooking zone 51. The two shielding components 2 and 2' of the electromagnetic heating device are located on the upper and lower sides of the electromagnetic heating component 1, respectively. The electromagnetic heating device is configured to electromagnetically heat the cooking zone 51 or the cookware placed on the cooking zone 51.

[0087] The upper surface of the lid body 50 is provided with a cooking area 51. The cooking area 51 can be made of metal or non-metal materials. The cooking area 51 can be integrally formed onto the lid body 50 or embedded into the lid body 50. The two shielding components 2 and 2' of the electromagnetic heating device are located on the upper and lower sides of the electromagnetic heating component 1, respectively. Thus, by setting the upper shielding component 2 to an unshielded state, the electromagnetic heating component 1 can electromagnetically heat the cooking area 51 (made of metal material) of the lid body 50, and the heat from the cooking area 51 can be conducted to the cookware placed on the cooking area 51. Alternatively, the electromagnetic heating component 1 can directly electromagnetically heat the cookware placed on the cooking area 51 (made of non-metallic material) of the lid body 50. By setting the upper shielding component 2 to a shielded state, heating of the cookware placed on the cooking area 51 of the lid body 50 can be stopped. By setting the lower shielding component 2' to an unshielded state, the cooking cavity inside the pot body 6 of the cooking appliance can be heated. By setting the lower shielding component 2' to a shielded state, heating of the cooking cavity inside the pot body 6 can be stopped.

[0088] In some exemplary embodiments, the electromagnetic heating device is configured to include a first temperature sensor 41 and / or a second temperature sensor 42, wherein the first temperature sensor 41 is configured to detect the temperature of the cooking zone 51; and / or the second temperature sensor 42 is configured to detect the temperature of the lower end wall of the lid body 50.

[0089] The first temperature sensor 41 of the electromagnetic heating device can be located on the upper side of the electromagnetic heating assembly 1 and extend beyond the upper shielding assembly 2 to detect the temperature of the cooking zone 51 on the lid body 50. Based on the detected temperature of the cooking zone 51, the upper shielding assembly 2 can be controlled to be in a shielded or unshielded state, thereby controlling the electromagnetic heating assembly 1 to electromagnetically heat the cooking zone 51 or the cookware placed on the cooking zone 51. By setting the first temperature sensor 41, dry burning of the cookware on the cooking zone 51 can be prevented, and control can be made according to the sensed temperature to achieve better cooking results.

[0090] The second temperature sensor 42 of the electromagnetic heating device can be located on the lower side of the electromagnetic heating assembly 1 and extend out of the lower shielding assembly 2' to detect the temperature of the lower end wall of the lid body 50. Based on the detected temperature of the lower end wall of the lid body 50, the lower shielding assembly 2' can be controlled to be in a shielded state or an unshielded state, thereby controlling the electromagnetic heating assembly 1 to heat the cooking cavity in the lower pot body 6.

[0091] In some exemplary embodiments, the cover body 50 includes a cover plate located at the lower part, and a second temperature sensor 42 is configured to detect the temperature of the cover plate.

[0092] The lower part of the cover body 50 is a cover plate, which can be a movable cover plate. The cover plate can form the lower end wall of the cover body 50. The second temperature sensor 42 of the electromagnetic heating device can detect the temperature of the cover plate so as to control the lower shielding component 2' to be in a shielded state or an unshielded state according to the detected temperature of the lower end wall of the cover plate.

[0093] In some exemplary embodiments, the cover body 50 includes a cover plate located at the lower part, the cover plate being a metal cover plate, and the electromagnetic heating device is configured to electromagnetically heat the metal cover plate.

[0094] The cover plate at the bottom of the cover body 50 is a metal cover plate. When the shielding component 2' on the lower side of the electromagnetic heating device is in an unshielded state, the electromagnetic heating component 1 can electromagnetically heat the metal cover plate, and the metal cover plate then radiates heat into the cooking cavity inside the pot body 6 to heat the food in the cooking cavity. When the shielding component 2' on the lower side of the electromagnetic heating device is in a shielded state, the electromagnetic heating component 1 stops electromagnetically heating the metal cover plate.

[0095] In other exemplary embodiments, the cover is a non-metallic cover, and the electromagnetic heating device is configured to electromagnetically heat the pot body 6 of the cooking appliance.

[0096] The cover plate at the bottom of the cover body 50 is a non-metallic cover plate. When the shielding component 2' on the lower side of the electromagnetic heating device is in an unshielded state, the electromagnetic heating component 1 cannot electromagnetically heat the non-metallic cover plate, but instead electromagnetically heats the pot body 6, thereby heating the food in the cooking cavity. When the shielding component 2' on the lower side of the electromagnetic heating device is in a shielded state, the electromagnetic heating component 1 stops electromagnetically heating the pot body 6.

[0097] In some exemplary embodiments, the lid 5 of the cooking appliance is configured to further include: a third temperature sensor (not shown), the lower part of the lid body 50 is provided with a mounting hole, one end of the third temperature sensor is installed inside the lid body 50, and the other end is a temperature sensing end that passes through the mounting hole and extends outside the lid body 50.

[0098] One end of the third temperature sensor is installed inside the lid body 50, and the other end is a temperature sensing end. This temperature sensing end can pass through the mounting hole on the lower end wall of the lid body 50 and extend outside the lid body 50. The temperature sensing end of the third temperature sensor can extend into the cooking cavity and measure the temperature of the cooking cavity of the pot body 6, so as to control the heating of the cooking cavity according to the detection result of the third temperature sensor.

[0099] It should be understood that a second temperature sensor 42 and a third temperature sensor may be installed inside the cover 5, or only the third temperature sensor may be installed.

[0100] like Figure 1 and Figure 2As shown, this embodiment of the invention also provides a cooking utensil, including a pot body 6 and a lid 5 of the cooking utensil provided in any of the above embodiments, the lid 5 covering the pot body 6.

[0101] The cooking appliance includes the aforementioned lid 5, which includes an electromagnetic heating device. Therefore, the lid 5 has a heating function, which can heat the cooking cavity inside the pot body 6 or the cookware placed on the lid 5. This allows the cooking appliance to take on more cooking functions, which helps to reduce the number of cooking appliances required and avoids problems such as large space occupation, high resource utilization, and high cost caused by too many cooking appliances.

[0102] In some exemplary embodiments, the pot body 6 includes an inner pot having a cooking cavity in which food can be placed.

[0103] The cover plate of the cover body 5 is a metal cover plate, which is configured to heat the cooking cavity; or, the cover plate of the cover body 5 is a non-metallic cover plate, and the electromagnetic heating device of the cover body 5 is configured to electromagnetically heat the inner pot.

[0104] The cover plate of the lid 5 is a metal cover plate. The electromagnetic heating component 1 of the lid 5 can electromagnetically heat the metal cover plate, and the metal cover plate then radiates heat to the cooking cavity of the pot body 6 to heat the food in the cooking cavity. When the cover plate is a non-metallic cover plate, the electromagnetic heating component 1 cannot electromagnetically heat the non-metallic cover plate, but instead electromagnetically heats the inner pot, thereby heating the food in the cooking cavity.

[0105] In some exemplary embodiments, the pot body 6 further includes a cooking heating component disposed on the lower side of the inner pot and configured to heat the inner pot. The cooking heating component may be a heating plate.

[0106] A cooking heating element is provided on the lower side of the inner pot, which can heat the inner pot to cook the food placed inside. This cooking heating element can be used in conjunction with the electromagnetic heating element 1 of the lid 5 to realize multiple cooking functions of the cooking appliance.

[0107] In some exemplary embodiments, such as Figure 1 and Figure 2 As shown, the pot body 6 or lid 5 is equipped with a display panel 61, which includes a cooking mode selection button. The user can select a cooking mode using this button, such as an electromagnetic cooking mode. In this mode, the electromagnetic heating device is controlled to electromagnetically heat the cookware placed on the cooking area 51 of the lid 5. Alternatively, the pot body 6 or lid 5 is equipped with a communication module. This module can remotely receive cooking mode selection signals sent by the user, and activate the electromagnetic cooking mode based on the received signals, controlling the electromagnetic heating device to electromagnetically heat the cookware placed on the cooking area 51 of the lid 5.

[0108] The pot body 6 or the lid 5 is equipped with a control device, which is electrically connected to the cooking mode selection button so as to control the cooking appliance to start the electromagnetic cooking mode according to the signal of the cooking mode selection button, control the upper shielding component 2 to be in an unshielded state, and the electromagnetic heating component 1 to start heating; or, the control device is electrically connected to the communication module so as to control the cooking appliance to start the electromagnetic cooking mode according to the signal of the communication module, control the upper shielding component 2 to be in an unshielded state, and the electromagnetic heating component 1 to start heating.

[0109] This invention also provides a method for controlling a cooking appliance, wherein the lid of the cooking appliance includes an electromagnetic heating device, the electromagnetic heating device including an electromagnetic heating component 1 and at least one shielding component 2, 2'.

[0110] like Figure 15 As shown, the control method includes:

[0111] S102: Determine whether the preset electromagnetic heating start-up conditions are met;

[0112] S104: Based on meeting the electromagnetic heating start-up conditions, control the shielding component to be in an unshielded state and control the electromagnetic heating component to start heating.

[0113] In this cooking appliance, the shielding component of the electromagnetic heating device is initially in a shielded state (i.e., the shielding component is normally closed). When heating is required on one side of the electromagnetic heating device, the electromagnetic heating component 1 is energized, and electromagnetic shielding is not applied to the side requiring heating, while electromagnetic shielding is applied to the side not requiring heating. During cooking, it can be determined whether the cooking appliance meets the preset electromagnetic heating start-up conditions; when the electromagnetic heating start-up conditions are met, the shielding component located on the side is controlled to be in an unshielded state, and the electromagnetic heating component 1 is activated to achieve electromagnetic heating.

[0114] In some exemplary embodiments, two shielding components are provided, with the two shielding components 2 and 2' located on the first side and the second side of the electromagnetic heating component 1, respectively.

[0115] Based on this, determining whether the preset electromagnetic heating start-up conditions are met includes:

[0116] Determine whether the preset first electromagnetic heating start-up condition or the second electromagnetic heating start-up condition is met.

[0117] Based on meeting the electromagnetic heating start-up conditions, the shielding component is controlled to be in an unshielded state, and the electromagnetic heating component is controlled to start heating, including:

[0118] Based on meeting the first electromagnetic heating start-up condition, the shielding component located on the first side is controlled to be in an unshielded state, and the electromagnetic heating component is controlled to start heating.

[0119] Based on meeting the second electromagnetic heating start-up condition, the shielding component located on the second side is controlled to be in an unshielded state, and the electromagnetic heating component is controlled to start heating.

[0120] In this cooking appliance, the two shielding components 2 and 2' of the electromagnetic heating device are initially in a shielded state (i.e., shielding components 2 and 2' are normally closed). When heating is required on the first or second side, the electromagnetic heating component 1 is energized, and electromagnetic shielding is not applied to the side requiring heating, while electromagnetic shielding is applied to the side not requiring heating. During cooking, it can be determined whether the cooking appliance meets the preset first electromagnetic heating start-up condition or the second electromagnetic heating start-up condition. When the first electromagnetic heating start-up condition is met, the shielding component 2 on the first side is controlled to be in an unshielded state, and the electromagnetic heating component 1 is activated to achieve electromagnetic heating on the first side. When the second electromagnetic heating start-up condition is met, the shielding component 2' on the second side is controlled to be in an unshielded state, and the electromagnetic heating component 1 is activated to achieve electromagnetic heating on the second side.

[0121] In some exemplary embodiments, based on satisfying a first electromagnetic heating start-up condition, controlling the shielding component located on the first side to be in an unshielded state and controlling the electromagnetic heating component to start heating includes:

[0122] The heating efficiency of the electromagnetic heating component can be controlled by controlling the duration during which the shielding component on the first side is in an unshielded state.

[0123] When the first electromagnetic heating start-up condition is met, the shielding component 2 on the first side is controlled to be in an unshielded state, and the electromagnetic heating component 1 is controlled to start heating. The heating efficiency of the electromagnetic heating component 1 on the first side can be controlled by controlling the duration of the shielding component 2 on the first side being in an unshielded state. That is, the heating of the first side by the electromagnetic heating component 1 can be controlled by controlling the shielding component 2 on the first side to be in an unshielded state and a shielded state intermittently.

[0124] In some exemplary embodiments, based on satisfying the second electromagnetic heating start-up condition, controlling the shielding component located on the second side to be in an unshielded state and controlling the electromagnetic heating component to start heating includes:

[0125] The heating efficiency of the electromagnetic heating component can be controlled by controlling the duration during which the shielding component on the second side is in an unshielded state.

[0126] When the second electromagnetic heating start-up condition is met, the shielding component 2' on the second side is controlled to be in an unshielded state, and the electromagnetic heating component 1 is controlled to start heating. The heating efficiency of the electromagnetic heating component 1 on the second side can be controlled by controlling the duration of the unshielded state of the shielding component 2' on the second side. That is, the heating of the second side by the electromagnetic heating component 1 can be controlled by intermittently controlling the shielding component 2' on the second side to be in an unshielded state and a shielded state.

[0127] In some exemplary embodiments, the method for controlling a cooking appliance further includes:

[0128] Determine whether the preset first electromagnetic heating termination condition or the second electromagnetic heating termination condition is met.

[0129] Based on the fulfillment of the first electromagnetic heating termination condition, the shielding component located on the first side is controlled to be in a shielding state;

[0130] Based on satisfying the second electromagnetic heating termination condition, the shielding component located on the second side is controlled to be in a shielding state;

[0131] Based on the simultaneous fulfillment of the first electromagnetic heating termination condition and the second electromagnetic heating termination condition, the electromagnetic heating component is controlled to stop heating.

[0132] After the electromagnetic heating component 1 is activated, it can determine whether the cooking appliance meets the preset first electromagnetic heating termination condition or the second electromagnetic heating termination condition. When the first electromagnetic heating termination condition is met, the shielding component 2 located on the first side is controlled to be in a shielding state to stop electromagnetic heating on the first side. When the second electromagnetic heating termination condition is met, the shielding component 2' located on the second side is controlled to be in a shielding state to stop electromagnetic heating on the second side. When both the first and second electromagnetic heating termination conditions are met simultaneously, the electromagnetic heating component 1 is controlled to stop heating. It should be noted that if only the first electromagnetic heating termination condition is met and the second electromagnetic heating termination condition is not met, or if only the second electromagnetic heating termination condition is met and the first electromagnetic heating termination condition is not met, the electromagnetic heating component 1 does not stop heating, but continues to electromagnetically heat either the first or second side.

[0133] In some exemplary embodiments, the first side is the upper side of the electromagnetic heating assembly 1, which is configured to heat the cookware placed on the cooking area 51 of the cover 5 of the cooking appliance.

[0134] Based on this, the conditions for starting the first electromagnetic heating include:

[0135] The electromagnetic cooking mode is activated, and a cooker is placed on the cooking area of ​​the lid 5 of the cooking appliance.

[0136] Users can activate the electromagnetic cooking mode by operating the cooking mode selection button on the display panel 61, or by activating the electromagnetic cooking mode remotely. When the electromagnetic cooking mode is activated, and a cookware is placed on the cooking area 51 of the lid 5 of the cooking appliance, the shielding component 2 located on the upper side is in an unshielded state, and the electromagnetic heating component 1 is activated to heat the cookware placed on the lid 5.

[0137] Based on this, the conditions for ending the first electromagnetic heating process include:

[0138] The cooking area of ​​the cooking appliance lid 5 is not occupied by any cooking appliance for a first preset duration, and either the electromagnetic cooking mode ends.

[0139] When no cookware is placed on the cooking area 51 of the cover 5, and the time without cookware reaches the first preset duration, the shielding component 2 located on the upper side can be controlled to be in a shielding state, stopping the electromagnetic heating on the upper side; or, when the food in the cookware has finished cooking and the electromagnetic cooking mode has ended, the shielding component 2 located on the upper side can be controlled to be in a shielding state, stopping the electromagnetic heating on the upper side.

[0140] In some exemplary embodiments, the second side is the lower side of the electromagnetic heating assembly 1, which is configured to heat the cooking cavity inside the pot body 6 of the cooking appliance.

[0141] Based on this, the conditions for starting the second electromagnetic heating include:

[0142] It satisfies either the preset condition for preventing condensation and the preset condition for starting the cooking chamber.

[0143] During cooking, the lower shielding component 2' is either in an unshielded state or in a shielded state, controlled according to the temperature of the cooking cavity or the cooking stage, to prevent condensation from forming on the lid 5 and to provide supplementary heating. When the conditions for preventing condensation are met, the lower shielding component 2' is controlled to be in an unshielded state, and the electromagnetic heating component 1 is activated to heat the lid 5 of the cooking appliance, preventing condensation from forming on the lid. Alternatively, when the conditions for supplementary heating of the cooking cavity are met, the lower shielding component 2' is controlled to be in an unshielded state, and the electromagnetic heating component 1 is activated to heat the cooking cavity of the pot 6. This allows the lid 5 to provide supplementary heating to the cooking cavity in addition to the heating provided by the cooking heating component, thus achieving the supplementary heating function of the lid 5.

[0144] In some exemplary embodiments, the conditions for preventing condensation include: from the start of cooking to the end of the heat preservation phase.

[0145] After the cooking appliance has been in the cooking process for a period of time (such as the second preset time), the electromagnetic heating component 1 can be activated to heat the metal cover plate of the lid 5 to prevent steam from condensing on the cover plate and producing condensate water, which continues until the heat preservation stage ends.

[0146] The second preset time can be no more than 10 minutes, such as no more than 5 minutes. At this time, before condensation forms on the metal cover, the electromagnetic heating component 1 is activated to heat the lower metal cover. By controlling the opening time of the lower shielding component 2', the temperature W1 of the metal cover is made greater than or equal to the temperature W2 of the cooking cavity (i.e., the temperature of the air or steam in the cooking cavity), ensuring that the temperature of the metal cover is not lower than the temperature of the air or steam near the metal cover. The temperature difference between the temperature of the metal cover and the temperature of the cooking cavity is within a preset temperature difference range, which can be 0 to 7°C, i.e., W1-W2 is within the range of 0-7°C, such as W1-W2 being within the range of 2°C-5°C.

[0147] During the cooking process, the temperature of the metal cover is higher than the temperature of the steam, meaning the temperature of the metal cover is higher than the dew point temperature. Therefore, condensation will not form on the metal cover, and the temperature difference between W1 and W2 is no more than 5°C or 7°C, making it difficult to dry the rice during the heat preservation stage, and preventing the rice from becoming dry and yellow.

[0148] In some exemplary embodiments, the conditions for starting the cooking chamber reheating include the cooking appliance being in any one of the heating phase, the reheating phase, and the heat preservation phase.

[0149] When the cooking appliance is in the heating stage, the cooking heating element at the bottom of the inner pot and the electromagnetic heating element 1 of the lid 5 heat up simultaneously. The radiant cover plate of the lid 5 heats up under the magnetic field of the electromagnetic heating element 1 and provides heat radiation to the cooking cavity. When the third temperature sensor on the lid 5 detects that the temperature of the cooking cavity is higher than a first preset temperature value or when boiling occurs in the cooking cavity, the electromagnetic heating element 1 stops heating. The first preset temperature value is greater than 100℃, such as greater than 105℃.

[0150] When the cooking appliance is in the reheating stage (after cooling the food in the cooking cavity, it is reheated) or the heat preservation stage, the cooking heating component at the bottom of the inner pot and the electromagnetic heating component 1 of the lid 5 heat simultaneously. When the second temperature sensor 42 or the third temperature sensor on the lid 5 detects a temperature higher than the second preset temperature value, the electromagnetic heating device stops heating (this can be achieved by controlling the lower shielding component 2' to be in a shielded state or by de-energizing the electromagnetic heating component 1). When the second temperature sensor 42 or the third temperature sensor detects a temperature lower than the third preset temperature value, the electromagnetic heating component 1 starts heating (this can be achieved by controlling the lower shielding component 2' to be in an unshielded state and energizing the electromagnetic heating component 1). After the heat preservation stage ends, the cooking heating component at the bottom of the inner pot and the electromagnetic heating component 1 of the lid 5 stop heating. The second preset temperature value is greater than the third preset temperature value; the second preset temperature value can be greater than 100℃, such as greater than 105℃; the third preset temperature value can be greater than 75℃.

[0151] When the cooking appliance finishes cooking, the second electromagnetic heating termination condition is met, and the shielding component 2' on the second side switches to the shielding state, causing the electromagnetic heating device to stop heating the cooking cavity.

[0152] Figure 16 A method for controlling a cooking appliance is provided, including:

[0153] S202: Receive instruction (e.g., to start cooking with the cooking appliance);

[0154] S204: Does the cooking cavity require heating of the cover 5 (i.e., does it meet the second electromagnetic heating start-up conditions)? If yes, proceed to S206.

[0155] S206: The lower shielding component is in an unshielded state;

[0156] S208: Electromagnetic heating component is energized and heating occurs;

[0157] S210: Has the cooking process ended? If so, proceed to S212.

[0158] S210: The lower shielding component is in a shielded state;

[0159] S214: Electromagnetic heating component is de-energized.

[0160] Figure 17 A method for controlling a cooking appliance is provided, including:

[0161] S302: Receive instruction;

[0162] S304: Do you want to start the electromagnetic cooking mode? If yes, proceed to S306.

[0163] S306: Are cooking utensils placed in the cooking area? If so, proceed to S308.

[0164] S308: The upper shielding component is in an unshielded state;

[0165] S310: Electromagnetic heating component is energized for heating;

[0166] S312: Has the cooking utensil left the cooking area? If so, proceed to S314.

[0167] S314: Is the cooking time away from the cooker greater than t1? If so, proceed to S316.

[0168] S316: The upper shielding component is in a shielded state;

[0169] S318: Electromagnetic heating component is de-energized.

[0170] The control of the upper shielding component 2 is as follows: Figure 17 As shown, the user operates the display panel or remote signal indication to determine whether the electromagnetic cooking mode is activated. If the electromagnetic cooking mode is activated, it checks whether a cooker is placed on the lid 5. If a cooker is placed, the upper shielding component 2 is opened, and the electromagnetic heating component 1 is powered on for heating. If the cooker is removed for more than a preset time t1, the upper shielding component 2 is closed. If there is no relevant instruction, the shielding component 2 remains in a normally closed state (i.e., in a shielded state) to prevent abnormal operation of the electromagnetic heating component 1 and potential safety issues. Simultaneously, the temperature detected by the first temperature sensor controls the opening and closing of the shielding component 2 (i.e., in an unshielded or shielded state), thereby controlling the temperature of the cooker and preventing dry burning.

[0171] This invention also provides a control device for a cooking appliance, including a processor and a memory storing a computer program. When the processor executes the computer program, it implements the control method provided in any of the above embodiments.

[0172] In the control device, the processor can be an integrated circuit chip with signal processing capabilities. The processor can be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it can also be a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), an On-Premises Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., capable of implementing or executing the methods, steps, and logic block diagrams disclosed in the embodiments of this invention. The general-purpose processor can be a microprocessor or any conventional processor.

[0173] This invention also provides a non-transient computer-readable storage medium storing a computer program that can run on a processor. When the computer program is executed by the processor, it implements the control method provided in any of the above embodiments.

[0174] In summary, the solution of this invention aims to achieve electromagnetic heating of the upper and lower sides of the lid 5 of the cooking appliance. While the electromagnetic heating component has a relatively high power, this high-power component can rapidly heat electromagnetically induced components within the magnetic field, posing a safety risk. Therefore, electromagnetic shielding of areas that do not require heating is crucial. By using a power device to move the shielding component, electromagnetic shielding is achieved on the side that does not require heating, while electromagnetic heating is performed on the side that does require heating. This allows a single electromagnetic heating component to heat different locations, enabling the cooking appliance to offer multiple cooking modes and meet diverse cooking needs.

[0175] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0176] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0177] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0178] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0179] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0180] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An electromagnetic heating device, characterized in that, include: Electromagnetic heating components; and At least one shielding component is located on the side of the electromagnetic heating component and has a shielded state and an unshielded state. When the shielding component is in the shielding state, it can electromagnetically shield the electromagnetic heating component; when the shielding component is in the unshielded state, the electromagnetic heating component can perform electromagnetic heating. The electromagnetic heating device also includes: A power unit, connected to the shielding assembly, is capable of driving the shielding assembly to move and switch between the shielded state and the unshielded state; The shielding component includes: Mounting rack; Multiple shielding elements are arranged circumferentially along the mounting bracket and rotatably connected to the mounting bracket; and Multiple connecting rods correspond one-to-one with multiple shielding elements, with the first end of each connecting rod connected to the corresponding shielding element and the second end of each connecting rod connected to the power device. The power unit includes: Power components; and The transmission mechanism includes a driving gear and a driven gear ring. The driving gear is mounted to the output shaft of the power element and meshes with the driven gear ring. The second ends of the plurality of connecting rods are all connected to the driven gear ring.

2. The electromagnetic heating device according to claim 1, characterized in that, Two shielding components are provided, located on the first and second sides of the electromagnetic heating component, respectively.

3. The electromagnetic heating device according to claim 2, characterized in that, The electromagnetic heating device includes one power unit, which in turn includes two transmission mechanisms. The power element is connected to two shielding components via the two transmission mechanisms, respectively; or... The electromagnetic heating device includes two power units, each of which is connected to one of the two shielding components.

4. The electromagnetic heating device according to claim 1 or 3, characterized in that, The power components include motors, electromagnetic drive components, or air pumps.

5. The electromagnetic heating device according to claim 2 or 3, characterized in that, Also includes: A first temperature sensor is located on a first side of the electromagnetic heating assembly, and the shielding assembly on the first side of the electromagnetic heating assembly has a clearance hole to avoid the first temperature sensor; and / or The second temperature sensor is located on the second side of the electromagnetic heating assembly, and the shielding assembly located on the second side of the electromagnetic heating assembly is provided with a clearance hole to avoid the second temperature sensor.

6. The electromagnetic heating device according to claim 2 or 3, characterized in that, The first and second sides of the electromagnetic heating assembly are opposite sides.

7. The electromagnetic heating device according to claim 6, characterized in that, Also includes: The side shield is annular and located between the two shielding components, and the electromagnetic heating component is placed within the cavity formed by the two shielding components and the side shield.

8. The electromagnetic heating device according to any one of claims 1 to 3, characterized in that, The electromagnetic heating assembly includes an electromagnetic coil, which is either planar or three-dimensional spiral.

9. A lid for a cooking utensil, characterized in that, include: Cover the body; and The electromagnetic heating device according to any one of claims 1 to 8 is installed on the cover body.

10. The lid of the cooking utensil according to claim 9, characterized in that, The electromagnetic heating device is the electromagnetic heating device according to claim 2. The upper surface of the cover body is provided with a cooking area. The two shielding components of the electromagnetic heating device are respectively located on the upper and lower sides of the electromagnetic heating component. The electromagnetic heating device is configured to electromagnetically heat the cooking area or the cookware placed on the cooking area.

11. The lid of the cooking utensil according to claim 10, characterized in that, The electromagnetic heating device is the electromagnetic heating device according to claim 5, wherein the first temperature sensor is configured to detect the temperature of the cooking zone; and / or, the cover body includes a cover plate located at the lower part, wherein the second temperature sensor is configured to detect the temperature of the cover plate.

12. The lid of the cooking utensil according to claim 10, characterized in that, The lid body includes a lower lid plate, which is a metal lid plate, and the electromagnetic heating device is configured to electromagnetically heat the metal lid plate; or, the lid plate is a non-metallic lid plate, and the electromagnetic heating device is configured to electromagnetically heat the pot body of the cooking appliance.

13. The lid of the cooking utensil according to any one of claims 9 to 12, characterized in that, Also includes: The third temperature sensor has a mounting hole at the bottom of the cover body. One end of the third temperature sensor is installed inside the cover body, and the other end is a temperature sensing end that passes through the mounting hole and extends outside the cover body.

14. A cooking utensil, characterized in that, include: Pot body; and The lid of the cooking appliance according to any one of claims 9 to 12, which is fitted onto the pot body.

15. The cooking utensil according to claim 14, characterized in that, The pot body or the lid is provided with a display panel, which is provided with a cooking mode selection button for users to select a cooking mode; or, the pot body or the lid is provided with a communication module, which is configured to remotely receive cooking mode selection signals. The pot body or the lid is equipped with a control device, which is configured to control the operation of the electromagnetic heating device according to the cooking mode selection button or the signal of the communication module.

16. The cooking utensil according to claim 14 or 15, characterized in that, The pot body includes an inner pot, the inner pot having a cooking cavity, and the lid is the lid of the cooking utensil as described in claim 12; The cover plate of the lid is a metal cover plate, which is configured to heat the cooking cavity; or, the cover plate of the lid is a non-metallic cover plate, and the electromagnetic heating device of the cover is configured to electromagnetically heat the inner pot.

17. The cooking utensil according to claim 16, characterized in that, The pot body also includes a cooking heating component, which is disposed on the lower side of the inner pot and configured to heat the inner pot.

18. A method for controlling a cooking utensil, characterized in that, The lid of the cooking appliance includes the electromagnetic heating device according to claim 1; The control method includes: Determine whether the preset electromagnetic heating start-up conditions are met; Based on the fulfillment of the electromagnetic heating start-up conditions, the shielding component is controlled to be in an unshielded state, and the electromagnetic heating component is controlled to start heating.

19. The method for controlling a cooking appliance according to claim 18, characterized in that, The shielding assembly is provided in two parts, and the two shielding assemblies are respectively located on the first side and the second side of the electromagnetic heating assembly; The determination of whether the preset electromagnetic heating start-up conditions are met includes: Determine whether the preset first electromagnetic heating start-up condition or the second electromagnetic heating start-up condition is met. The step of controlling the shielding component to be in an unshielded state and controlling the electromagnetic heating component to start heating based on meeting the electromagnetic heating start conditions includes: Based on satisfying the first electromagnetic heating start-up condition, the shielding component located on the first side is controlled to be in an unshielded state, and the electromagnetic heating component is controlled to start heating. Based on the fulfillment of the second electromagnetic heating start-up condition, the shielding component located on the second side is controlled to be in an unshielded state, and the electromagnetic heating component is controlled to start heating.

20. The method for controlling a cooking appliance according to claim 19, characterized in that, Also includes: Determine whether the preset first electromagnetic heating termination condition or the second electromagnetic heating termination condition is met. Based on satisfying the first electromagnetic heating termination condition, the shielding component located on the first side is controlled to be in a shielding state; Based on satisfying the second electromagnetic heating termination condition, the shielding component located on the second side is controlled to be in a shielding state; Based on the simultaneous fulfillment of the first electromagnetic heating termination condition and the second electromagnetic heating termination condition, the electromagnetic heating component is controlled to stop heating.

21. The method for controlling a cooking appliance according to claim 20, characterized in that, The first side is the upper side of the electromagnetic heating component, which is configured to heat the cookware placed on the cooking area of ​​the lid of the cooking appliance. The first electromagnetic heating start-up conditions include: The electromagnetic cooking mode is activated, and a cooker is placed on the cooking area of ​​the lid of the cooking appliance; The first electromagnetic heating termination condition includes: The cooking area of ​​the lid of the cooking appliance is not occupied by any cooking utensils for a first preset duration, and the electromagnetic cooking mode ends, either.

22. The method for controlling a cooking appliance according to any one of claims 19 to 21, characterized in that, The step of controlling the shielding component located on the first side to be in an unshielded state and controlling the electromagnetic heating component to start heating based on satisfying the first electromagnetic heating start condition includes: The heating efficiency of the electromagnetic heating component is controlled by controlling the duration during which the shielding component on the first side is in an unshielded state. The step of controlling the shielding component located on the second side to be in an unshielded state and controlling the electromagnetic heating component to start heating based on satisfying the second electromagnetic heating start condition includes: The heating efficiency of the electromagnetic heating component is controlled by controlling the duration for which the shielding component on the second side is in an unshielded state.

23. A control device for a cooking utensil, characterized in that, It includes a processor and a memory storing a computer program, wherein the processor, when executing the computer program, implements the control method as described in any one of claims 18 to 22.

24. A non-transient computer-readable storage medium, characterized in that, The storage medium stores a computer program that can run on a processor, which, when executed by the processor, implements the control method as described in any one of claims 18 to 22.

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