Electromagnetic heating cooking appliance

Abstract

The application discloses an electromagnetic heating cooking appliance. It comprises a control device, an electromagnetic heating module, a cooking container, and a working condition display component. The electromagnetic heating module comprises at least one electromagnetic coil for generating an alternating magnetic field under the control of the control device, and the magnetic field area of the alternating magnetic field is non-uniformly distributed in the circumferential direction of the electromagnetic heating module; the cooking container comprises a ferromagnetic material, which is arranged in the magnetically inducible area of the electromagnetic heating module, and the central axis of the cooking container is substantially coincident with the central axis of the electromagnetic heating module; the working condition display component is electrically connected to the control device. The control device is configured to simultaneously perform the following operations during at least part of the cooking process: relatively rotating the cooking container and at least part of the electromagnetic heating module around the central axis to relatively rotate the alternating magnetic field and the cooking container; and making the working condition display component output at least a first visual signal representing the relative rotation.

Description

Technical Field

[0001] This application relates to the field of cooking appliance technology, and more specifically to an electromagnetic heating cooking appliance. Background Technology

[0002] Induction heating (IH) appliances are household appliances that directly heat cookware using the principle of electromagnetic induction. Common examples include induction cookers and rice cookers. Current IH appliances employ multiple independently controlled coils in the coil holder to achieve a three-dimensional heating effect and a complex, intense convection heating effect. By independently controlling the heating of different coils, the positions of the hot and cold zones within the pot can be varied. This means that different convection directions can be formed in different hot and cold zones at different cooking times, creating multiple states of thermal convection and resulting in a complex, intense convection heating effect inside the inner pot. However, the use of multiple independently heating coils presents challenges due to the complexity of coil arrangement and winding techniques, requiring advanced winding technology. This also leads to complex manufacturing processes for the magnetic strips and magnetic strip holders, making assembly difficult and increasing overall cost. Furthermore, the fixed heating position of the coils limits the heating area, resulting in less than ideal cooking results.

[0003] Therefore, there is a need to provide an electromagnetic heating cooking appliance to at least partially solve the above problems. Summary of the Invention

[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This summary section is not intended to limit the key and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, this application provides an electromagnetic heating cooking appliance, comprising:

[0006] Control device;

[0007] An electromagnetic heating module is electrically connected to the control device. The electromagnetic heating module includes at least one electromagnetic coil. The electromagnetic coil is used to generate an alternating magnetic field after being energized under the control of the control device. The electromagnetic heating module is configured such that the magnetic field region of the alternating magnetic field is non-uniformly distributed in the circumferential direction of the electromagnetic heating module.

[0008] A cooking container for holding food, the cooking container comprising a ferromagnetic material, the cooking container being positioned within the magnetically inductive region of the electromagnetic heating module, with the central axis of the cooking container substantially coinciding with the central axis of the electromagnetic heating module; and

[0009] The operating status display device is electrically connected to the control device.

[0010] The control device is configured to perform the following tasks simultaneously during at least a portion of the cooking process:

[0011] The cooking container and at least a portion of the electromagnetic heating module are rotated relative to each other about the central axis, so that the alternating magnetic field and the cooking container rotate relative to each other; and

[0012] The operating condition display device shall output at least a first visual signal representing the relative rotation.

[0013] According to this application, the alternating magnetic field region (intensity) of the electromagnetic heating cooking appliance is non-uniform, and the alternating magnetic field and the cooking container can rotate relative to each other, thereby achieving the effect of multi-point heat source rotation heating. The operating status display device indicates the relative rotation between the alternating magnetic field and the cooking container through a first visual signal, allowing the user to develop a perceptual understanding of the multi-point heat source rotation heating technology, understand the difference between the cooking appliance of this application and traditional IH cooking appliances, and perceive the technological improvements of IH cooking appliances.

[0014] Optionally, the electromagnetic heating cooking appliance is configured such that the position of the first visual signal changes continuously on the circumference along a fixed circumferential direction to correspond to the relative rotation.

[0015] According to this application, the first visual signal presents a display effect of circular motion, intuitively demonstrating the technical characteristics of rotational heating.

[0016] Optionally, the fixed circumferential direction corresponds to the direction of the relative rotation; and / or

[0017] The electromagnetic heating cooking appliance is configured such that the position of the first visual signal cyclically changes between several fixed positions on the circumference along a fixed circumferential direction, corresponding to the relative rotation.

[0018] According to this application, the direction of the circular motion presented by the first visual signal corresponds to or is consistent with the direction of the relative rotation between the alternating magnetic field and the cooking container, thereby more realistically simulating the relative rotation between the alternating magnetic field and the cooking container and giving the user a more intuitive experience. The first visual signal performs circular motion cyclically, continuously outputting indication information, making it easier for the user to receive instructions.

[0019] Optionally, the working condition display device includes a display screen, and the first visual signal is a light spot whose position changes continuously along the fixed circumferential direction on the circumference of the display screen.

[0020] According to this application, the working condition display device indicates the working condition through a display screen and can provide instructions in a variety of forms.

[0021] Optionally, the control device is further configured to perform the following tasks simultaneously during at least a portion of the cooking process:

[0022] Energize the electromagnetic coil; and

[0023] The operating condition display device outputs a second visual signal representing that the electromagnetic coil is energized, and the second visual signal is different from the first visual signal.

[0024] According to this application, the operating condition display device can also indicate heating operation information of multiple heat sources, making the operating condition display device more integrated.

[0025] Optionally, the operating condition display device includes at least one first indicator light, and the first visual signal is a light signal emitted by the first indicator light.

[0026] According to this application, the operating condition display device indicates the operating condition through indicator lights, thus saving costs.

[0027] Optionally, the operating condition display device includes a plurality of first indicator lights, all of which are arranged at intervals on the same circumference, wherein the control device is configured to illuminate all the first indicator lights in a first illumination mode to form the first visual signal.

[0028] The first lighting method is to sequentially light up all the first indicator lights along the fixed circumferential direction.

[0029] According to this application, the effect of visual signal rotation is created by switching on and illuminating multiple indicator lights arranged on the same circle one by one.

[0030] Optionally, the control device is further configured with

[0031] All the first indicator lights are illuminated in a second illumination mode to output a second visual signal representing that the electromagnetic coil is energized, wherein the second illumination mode is different from the first illumination mode.

[0032] According to this application, the indicator light can also be used to indicate that the electromagnetic heating module has power output, making the operating condition display device more integrated.

[0033] Optionally, the control device is further configured to perform the following tasks simultaneously during at least a portion of the cooking process:

[0034] The electromagnetic coil is not energized; and

[0035] All the first indicator lights are illuminated in a third illumination mode to output a third visual signal representing that the electromagnetic coil is not energized, wherein the third illumination mode is different from the first illumination mode and the second illumination mode.

[0036] According to this application, the indicator light can also be used to indicate that the electromagnetic heating module has no power output, making the operating condition display device more integrated.

[0037] Optionally, the control device is further configured to illuminate all the first indicator lights in a fourth illumination mode to output a fourth visual signal representing a malfunction of the electromagnetic heating module, wherein the fourth illumination mode is different from the first illumination mode.

[0038] According to this application, the indicator light can also be used to indicate a malfunction of the electromagnetic heating module, making the operating condition display device more integrated.

[0039] Optionally, the operating condition display device further includes at least one second indicator light.

[0040] The control device is also configured to perform the following tasks simultaneously during at least a portion of the cooking process:

[0041] Energize the electromagnetic coil; and

[0042] All the second indicator lights are illuminated in a first additional lighting mode to output a second visual signal representing that the electromagnetic coil is energized.

[0043] According to this application, different indicator lights are used to indicate the heating of the electromagnetic heating module and the relative rotation between the alternating magnetic field and the cooking container.

[0044] Optionally, the first additional lighting method is to simultaneously light up all the second indicator lights.

[0045] According to this application, the first additional lighting method is simple to control and has a clear indication effect.

[0046] Optionally, during at least a portion of the time period when the second indicator light is illuminated in the first additional lighting mode, the brightness of the second indicator light corresponds to the power of the electromagnetic heating module. When the power of the electromagnetic heating module is high, the brightness of the second indicator light is greater, and when the power of the electromagnetic heating module is low, the brightness of the second indicator light is smaller.

[0047] According to this application, the brightness of the indicator light is used to simulate the heating power, making the indication signal more intuitive.

[0048] Optionally, during at least a portion of the time period when the second indicator light is illuminated in the first additional lighting manner, the brightness of the second indicator light exhibits a breathing light effect.

[0049] According to this application, the second indicator light can indicate the operating condition through the effect of a breathing light.

[0050] Optionally, when the electromagnetic coil is not energized, the second indicator light will not illuminate.

[0051] According to this application, the method for indicating the operating condition of the electromagnetic heating module with no power output is simple.

[0052] Optionally, the color of the first indicator light is different from the color of the second indicator light; and / or

[0053] The shape of the light signal of the first indicator light is different from the shape of the light signal of the second indicator light.

[0054] According to this application, the light signals of the first indicator light and the second indicator light are clearly different, making it convenient for users to distinguish between the first indicator light and the second indicator light.

[0055] Optionally, the light signal of the first indicator light presents an arrow display effect.

[0056] According to this application, the first indicator light is indicated by an arrow symbol, which is intuitive, visual, and easy for users to understand.

[0057] Optionally, the control device is further configured to illuminate all the second indicator lights in a second additional lighting mode to output a fourth visual signal representing a malfunction of the electromagnetic heating module, wherein the second additional lighting mode is different from the first additional lighting mode.

[0058] According to this application, the second indicator light can also indicate a malfunction in the electromagnetic heating module, making the function of the operating condition display device more integrated.

[0059] Optionally, the operating condition display device includes a plurality of second indicator lights, the number of which is the same as the number of first indicator lights, and all the second indicator lights are arranged alternately with the first indicator lights on the same circumference.

[0060] Furthermore, all the second indicator lights are arranged alternately with the first indicator lights at equal intervals on the same circumference.

[0061] According to this application, the layout of the first indicator light and the second indicator light is aesthetically pleasing and makes full use of space.

[0062] Optionally, the electromagnetic heating module includes N electromagnetic coils, all of which are spaced apart along the circumferential direction of the electromagnetic heating module, and the light signal of the second indicator light presents the display effect of the coils.

[0063] According to this application, the shape of the light signal of the second indicator light is intuitive, vivid, and easy for users to understand.

[0064] Optionally, the control device is further configured to illuminate all the first indicator lights in a fifth illumination mode to output a fifth visual signal representing a malfunction in the relative rotation between the cooking container and the alternating magnetic field, wherein the fifth illumination mode is different from the first illumination mode.

[0065] According to this application, the first indicator light is also used to indicate a malfunction in the relative rotation between the cooking container and the alternating magnetic field, making the function of the operating condition display device more integrated.

[0066] Optionally, the alternating magnetic field has N strong magnetic regions and N weak magnetic regions alternately distributed along the circumferential direction of the electromagnetic heating module, wherein the magnetic field strength of the strong magnetic region is greater than that of the weak magnetic region, and the position of the first visualized signal changes continuously among the N positions on the circumference, where N is a positive integer greater than or equal to 2.

[0067] Furthermore, the N strong magnetic regions are equally spaced along the circumferential direction of the electromagnetic heating module, and the position of the first visual signal continuously changes among the N equally spaced positions on the circumference.

[0068] According to this application, the light signal of the first indicator light vividly represents the non-uniform alternating magnetic field, and the number of heating heat sources is represented by the number of signal positions on the circumference.

[0069] Optionally, the electromagnetic heating module includes N electromagnetic coils, all of which are spaced apart along the circumferential direction of the electromagnetic heating module.

[0070] According to this application, a circumferentially non-uniformly distributed magnetic field is achieved by using coils that are not concentrically arranged.

[0071] Optionally, the operating status display device includes an indicator light, and the outer shell of the electromagnetic heating cooking appliance includes a cover plate for covering the indicator light, so that when the indicator light is not lit, the indicator light is basically invisible from the outer surface of the cooking appliance.

[0072] According to this application, the mask protects the indicator light and improves the aesthetic appearance of the cooking appliance.

[0073] Optionally, the mask has a light-transmitting area corresponding to the position of the indicator light, and when the indicator light is lit, the shape of the light signal of the indicator light is consistent with the shape of the light-transmitting area.

[0074] According to this application, the shape of the light signal of the indicator light can be designed by setting a light-transmitting area, thereby improving the user experience.

[0075] Optionally, the cooking container is generally in the shape of a body of revolution about its central axis; and / or

[0076] The electromagnetic heating cooking appliance is configured such that at least a portion of the electromagnetic heating module is rotatable relative to the cooking container about the central axis of the electromagnetic heating module.

[0077] According to this application, the cooking container has a rotating shape, which is beneficial for the even heating of food. The cooking appliance causes the magnetic field to rotate around the cooking container, which can prevent the food in the cooking container from shaking out, and there is no need to increase the driving power as the amount of food increases, making it more practical to operate.

[0078] Optionally, the operating condition display device is disposed on the lid of the electromagnetic heating cooking appliance, and the first visual signal is emitted from the upper surface of the lid.

[0079] According to this application, the indication information of the operating condition display device is easy to observe. Attached Figure Description

[0080] The following drawings, which are incorporated herein by reference as part of this application, are provided for understanding the application. The drawings illustrate representative embodiments of the application and are used to explain the principles of the application, not to limit it.

[0081] In the attached image:

[0082] Figure 1 This is a side cross-sectional schematic diagram of an electromagnetic heating cooking appliance according to a specific embodiment of this application;

[0083] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0084] Figure 3 for Figure 1 A top view schematic diagram of a first example of an electromagnetic heating module of an electromagnetic heating cooking appliance shown.

[0085] Figure 4 for Figure 3 The diagram shown is a bottom view of the electromagnetic heating module.

[0086] Figure 5 for Figure 1 An exploded view of the electromagnetic heating cooking appliance shown.

[0087] Figure 6 for Figure 3 The diagram shows a three-dimensional representation of the electromagnetic heating module, with the wiring structure shown.

[0088] Figure 7 for Figure 3The diagram shows a further exploded view of the electromagnetic heating module, with some components assembled in the diagram;

[0089] Figure 8 for Figure 3 Another three-dimensional schematic diagram of the electromagnetic heating module shown;

[0090] Figure 9 for Figure 3 The diagram shows a partial structure of the electromagnetic heating module, with the coil disk in a preset initial position.

[0091] Figure 10 for Figure 3 The diagram shows a partial structure of the electromagnetic heating module, in which the coil disk has been rotated by an angle relative to the preset initial position.

[0092] Figure 11 for Figure 1 An exploded perspective view of a portion of the structure of the electromagnetic heating module of a second example of an electromagnetic heating cooking appliance.

[0093] Figure 12 for Figure 1 An exploded perspective view of a portion of the structure of the electromagnetic heating module of the third example of the electromagnetic heating cooking appliance shown.

[0094] Figure 13 for Figure 1 A top view schematic diagram of a specific example of the lid of an electromagnetic heating cooking appliance, wherein the status display device is in operation;

[0095] Figure 14 for Figure 1 A top view schematic diagram of another specific example of the lid of the electromagnetic heating cooking appliance shown, in which the status display device is in operation;

[0096] Figure 15 for Figure 1 The diagram shows a top view of the lid of an electromagnetic heating cooking appliance, in which the status display device is not in operation;

[0097] Figure 16 for Figure 1 A top view schematic diagram of another specific example of the lid of the electromagnetic heating cooking appliance shown, in which the status display device is in operation.

[0098] Explanation of reference numerals in the attached figures:

[0099] 100: Cooking utensils

[0100] 200: Cover

[0101] 210: Operating status display device

[0102] 211: First indicator light

[0103] 212: Second indicator light

[0104] 213: Light Spot

[0105] 220: Human-Computer Interaction Device

[0106] 300: Cooking containers

[0107] 400: Control device

[0108] 401: Third connecting hole

[0109] 500: Base

[0110] 600: Electromagnetic heating module

[0111] 602: Fixture

[0112] 603: Coil

[0113] 604: Bearing

[0114] 605: Temperature sensor

[0115] 606: Electromagnetic coil

[0116] 609: First Gear

[0117] 610: Chassis frame

[0118] 611: Second Gear

[0119] 613: Electric motor

[0120] 614: First main cable

[0121] 615: Second main cable

[0122] 620 / 623 / 624: Line Card

[0123] 621: First Card Slot

[0124] 622: Second card slot

[0125] 625: Motor cable

[0126] 626: Temperature sensor cable

[0127] 631: Spring

[0128] 635: Axial protrusion

[0129] 664: Position Detection Component

[0130] 667: Position detection component cable

[0131] 680: Analog coil texture

[0132] 690: Turntable

[0133] 691: Area 1

[0134] 692: Second Region

[0135] 695: Magnetic field line gathering component

[0136] 700: Claypot Detailed Implementation

[0137] The following description provides numerous specific details to offer a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with this application.

[0138] To fully understand this application, a detailed description will be provided in the following description. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. Obviously, the implementation of the embodiments of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, in addition to these detailed descriptions, this application may have other embodiments.

[0139] The ordinal numbers such as “first” and “second” used in this application are merely identifiers and have no other meaning, such as a specific order. Furthermore, for example, the term “first component” does not imply the existence of a “second component,” and the term “second component” does not imply the existence of a “first component.” The use of words such as “first,” “second,” and “third” does not indicate any order and can be interpreted as names.

[0140] It should be noted that the terms “upper,” “lower,” “front,” “back,” “left,” “right,” “inner,” “outer,” and similar expressions used in this application are for illustrative purposes only and are not intended to be limiting.

[0141] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0142] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.

[0143] This application provides an electromagnetic heating cooking appliance.

[0144] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings.

[0145] like Figures 1 to 4 As shown, in a preferred embodiment, the electromagnetic heating cooking appliance 100 (hereinafter referred to as cooking appliance 100) according to this application includes a lid 200 and a pot body 700. The lid 200 is connected to the pot body 700, and the lid 200 can be flipped upwards to open the pot body 700 and flipped downwards to close the pot body 700. An electromagnetic heating module 600 and a cooking container 300 are disposed within the pot body 700. The electromagnetic heating module 600 generates an alternating magnetic field after being energized. The internal space of the cooking container 300 forms a cooking cavity for holding food, and it includes ferromagnetic materials, which can be heated by the alternating magnetic field. In the illustrated embodiment, the cooking appliance 100 is a rice cooker, but it can also be an electric pressure cooker, an electric slow cooker, an electric hot pot, an electric kettle, or an induction cooker.

[0146] The electromagnetic heating module 600 has a central axis P1, and the magnetic field region (intensity) of the alternating magnetic field generated by the electromagnetic heating module 600 is non-uniformly distributed along the circumferential direction of the electromagnetic heating module. The cooking container 300 has a central axis P2. The cooking container 300 is generally in the shape of a body of revolution about the central axis P2 (e.g., having a circular cross-section). The cooking container 300 is used to be disposed within the magnetically inductive region of the electromagnetic heating module 600, for example, disposed detachably from the electromagnetic heating module within this magnetically inductive region. The central axis P2 of the cooking container coincides with or substantially coincides with the central axis P1 of the electromagnetic heating module.

[0147] The electromagnetic heating module 600 serves as the heating device for the cooking appliance 100. The alternating magnetic field of the electromagnetic heating module 600 is non-uniformly distributed circumferentially within the cooking container 300. Where the magnetic field strength is high, the eddy currents within the container wall of the cooking container 300 are large, resulting in higher temperatures in the nearby cooking cavity. Conversely, where the magnetic field strength is low, the eddy currents within the container wall of the cooking container 300 are small, leading to lower temperatures in the nearby cooking cavity.

[0148] The cooking appliance 100 is configured such that at least a portion of the electromagnetic heating module 600 can rotate relative to the cooking container 300, causing the alternating magnetic field of the electromagnetic heating module 600 to rotate relative to the cooking container 300, thereby ensuring that the cooking container 300 is heated evenly. Furthermore, when the magnetic field rotates, the convection direction in the cooking cavity changes, which is beneficial for the food to tumble thoroughly.

[0149] Specifically, the electromagnetic heating module 600 includes, for example, a coil disk 603, at least one electromagnetic coil 606, a chassis frame 610, a transmission device, and a drive device. The coil disk 603 is rotatable, specifically rotatable about the central axis P1 of the electromagnetic heating module, which is, for example, the central axis of the coil disk 603. The coil disk 603 is, for example, bowl-shaped, adapted to the bottom shape of the cooking container 300. The electromagnetic coil 606 is disposed on the coil disk 603, for example, on the bottom surface of the coil disk 603, and is thus driven to rotate by the coil disk 603. When energized, the electromagnetic coil 606 generates the aforementioned alternating magnetic field, thereby inducing electromagnetic induction with the cooking container 300, heating the cooking container 300, and subsequently heating the food inside the cooking container 300. The coil disk 603 is disposed on the chassis frame 610 and can rotate on the chassis frame 610. The chassis frame 610 is a component that supports the various functional components within the system. The transmission device is connected to the coil disk 603. The drive unit is mounted on the chassis frame 610 and is connected to the transmission unit, which drives the coil disk 603 to rotate.

[0150] For example, such as Figure 2 and Figure 3 As shown, the electromagnetic coil 606 and the coil disk 603 are not concentrically arranged. "Not concentric" means that the spiral center of the winding of the electromagnetic coil 606 is not collinear with the central axis of the coil disk 603. For example, the electromagnetic heating module 600 includes only one electromagnetic coil 606, and the winding center of the electromagnetic coil 606 is offset from the central axis of the coil disk 603. Alternatively, the electromagnetic heating module 600 includes at least two electromagnetic coils 606, and all electromagnetic coils 606 are spaced apart along the circumferential direction of the electromagnetic heating module 600. For example, the electromagnetic heating module 600 includes N electromagnetic coils 606, and all electromagnetic coils 606 are equally spaced along the circumferential direction of the electromagnetic heating module, where N is a natural number greater than or equal to 2. Preferably, N is less than or equal to 6. In the illustrated embodiment, the electromagnetic heating module 600 includes three electromagnetic coils 606, and all electromagnetic coils 606 are equally spaced (120-degree circumferential angle) along the circumferential direction of the electromagnetic heating module.

[0151] In this paper, all electromagnetic coils 606 are equally spaced along the circumferential direction of the electromagnetic heating module 600. This can be understood as the center point of each electromagnetic coil 606 being on the same circle with a point on axis P1 as the center, and the center points of all electromagnetic coils 606 being equally spaced on this circle. The coil disk 603 and all electromagnetic coils 606 form a rotationally symmetrical structure with axis P1 as the rotational symmetry center and 360 / N degrees as the rotation angle.

[0152] The number of electromagnetic coils 606 is determined according to the required electromagnetic heating power. Multiple electromagnetic coils 606 can be connected in series, for example, they can be made by winding a single enameled wire.

[0153] In embodiments not shown in this application, the multiple electromagnetic coils 606 are divided into different groups. The center points of the electromagnetic coils 606 in the same group are evenly distributed on the same circle centered on a point on axis P1. The center points of the electromagnetic coils 606 in different groups are on different circles centered on a point on axis P1. For example, the multiple electromagnetic coils 606 are divided into 3 groups, and the different circles are divided into small circles, medium circles, and large circles according to their radii, with the small circle having the smallest radius and the large circle having the largest radius. The first group, for example, has 4 electromagnetic coils 606, and its center is on the small circle. The second group, for example, has 6 electromagnetic coils 606, and its center is on the medium circle. The third group, for example, has 8 electromagnetic coils 606, and its center is on the large circle.

[0154] The magnetic field strength is strong where coil 606 is located, and weak between two coils 606. By setting non-concentric coils, the cooking appliance 100 can achieve a multi-point heat source rotation heating effect, thereby realizing a variable heating convection pattern. This enables complex and varied convection and tumbling patterns and effects inside the cooking container 300, resulting in more even heating of food and improving the undesirable phenomenon of rice being either too mushy or too dry in certain areas after cooking.

[0155] Optionally, the electromagnetic heating module 600 also includes a temperature sensor 605 and a mounting bracket 602. The temperature sensor 605 is located in the middle of the base frame 610, and its top passes through the coil 603 to resiliently contact the cooking container 300 of the cooking appliance 100. The mounting bracket 602 is connected to the base frame 610 and is used to limit the position of the temperature sensor 605. The mounting bracket 602 and the base frame 610 can be snapped or threaded together, and neither the mounting bracket 602 nor the temperature sensor 605 can rotate. A through hole is provided in the middle of the coil 603 corresponding to the temperature sensor 605 and the mounting bracket 602.

[0156] The temperature sensor 605 can be an NTC type temperature sensor. A spring 631 is provided below the temperature sensor 605. The lower end of the spring 631 is supported on the base frame 610, and the upper end of the spring 631 pushes the temperature sensor 605, so that the temperature sensor 605 can elastically contact the cooking container 300 to ensure the temperature measurement effect.

[0157] Optionally, the driving device includes a motor 613. The motor 613 can be a stepper motor, used to provide the driving force to rotate the coil disk 603. Through stepper motor rotation control and transmission device, the coil disk 603 can achieve forward and reverse rotation, intermittent rotation, and stepless speed regulation. The driving device may also include a magnetic shield. The magnetic shield covers the motor 613 to isolate electromagnetic interference between the motor 613 and the electromagnetic coil 606. The magnetic shield can be made of materials with magnetic shielding functions such as aluminum or copper.

[0158] Optionally, the transmission device includes a first gear 609 and a second gear 611. The first gear 609 is connected to the coil disk 603, specifically it can be sleeved on the axial protrusion 635 of the coil disk 603. The second gear 611 is connected to the output shaft of the motor 613 and meshes with the first gear 609 for transmission. The first gear 609 and the second gear 611 can be hollowed out, which can reduce the weight of the product. By using a gear pair, it is easy to set up in a very small space, and the driving force of the motor 613 can be transmitted to the coil disk 603 at various preset transmission ratios.

[0159] Preferably, the first gear 609 and the second gear 611 are non-metallic gears. Specifically, they can be made of plastic materials, such as POM, GFPP, PBT, PA66, etc. In this embodiment, POM is preferred. Since the gear pair is close to the coil, setting the gear pair as non-metallic gears can avoid electromagnetic induction with the coil.

[0160] Optionally, the gear ratio between the second gear 611 and the first gear 609 can be any one of 1:1, 1:2, 1:3, or 1:4. Considering the product's space layout, a gear ratio of 1:3 is preferred to facilitate stepper motor speed adjustment and rotation angle. For example, the transmission result allows the coil disk 603 to rotate within a range of 0.1 r / min to 10 r / min. A preferred rotational speed is 1 r / min.

[0161] Optionally, the electromagnetic heating module 600 also includes a bearing 604, which is disposed in the middle of the chassis frame 610 to support the rotation of the coil disk 603. A bearing seat is provided in the middle of the chassis frame 610 for mounting the bearing 604, and an axial protrusion 635 is provided in the middle of the coil disk 603 facing the base 500, which is connected to the bearing 604. By providing the bearing 604 in the middle of the chassis frame 610 to support the rotation of the coil disk 603, the stability of the coil disk 603's rotation is improved, avoiding eccentric rotation and affecting the fit between mechanisms.

[0162] Optionally, bearing 604 can be a non-metallic bearing, specifically made of plastic, ceramic, or other non-metallic materials. Since bearing 604 is close to the coil, setting it as a non-metallic bearing avoids electromagnetic induction between them.

[0163] Optionally, such as Figure 1 , Figure 2 and Figure 5As shown, the electromagnetic heating module 600 also includes a control device 400. The control device 400 is connected to the chassis frame 610 and electrically connected to the electromagnetic coil 606 and the motor 613 via cables. A third connection hole 401 is provided on one side of the control device 400, allowing it to be connected to the chassis frame 610 via screws. By connecting the control device 400 to the chassis frame 610, the control device 400 and the chassis frame 610 can be assembled together, becoming a component of the electromagnetic heating module 600, thus improving the system integration of the electromagnetic heating module 600. The control device 400 can also be a control device for the cooking appliance 100, controlling not only the electromagnetic coil 606 and the motor 613, but also other electronically controlled components of the cooking appliance 100.

[0164] like Figure 5 and Figure 6 As shown, the main functional module wiring structure of the electromagnetic heating module 600 includes a first main cable 614 and a second main cable 615. The first main cable 614 is connected at both ends to one end of the enameled wire forming the electromagnetic coil 606 and the control device 400, respectively. Because the first main cable 614 needs to rotate with the coil disc 603, it has a U-shaped bend, providing allowance for deformation, and will not become entangled when rotating with the coil disc 603. The second main cable 615 is connected at both ends to the other end of the enameled wire forming the electromagnetic coil 606 and the control device 400, respectively.

[0165] The main functional module wiring structure of the electromagnetic heating module 600 also includes a motor cable 625 and a temperature sensor cable 626. One end of the motor cable 625 is connected to the motor 613, and the other end is connected to the control device 400. One end of the temperature sensor cable 626 is connected to the temperature sensor 605, and the other end is connected to the control device 400.

[0166] The bottom of the chassis frame 610 is provided with a first slot 621 and a second slot 622. The first slot 621 is used to limit the first main cable 614, and the second slot 622 is used to limit the second main cable 615. A cable clip 620 is also provided at the bottom of the chassis frame 610 to limit the first main cable 614 and the second main cable 615. Multiple cable clips 624 are provided on the side of the chassis frame 610 to limit the motor cable 625 and the temperature sensor cable 626. A cable clip 623 is also provided at the bottom of the chassis frame 610 to limit the motor cable 625.

[0167] like Figure 7 and Figure 8As shown, the electromagnetic heating module 600 also includes a position detection component 664 for detecting the rotational position of the coil disk 603, which is also the rotational position of the electromagnetic coil 606. For example, the position detection component 664 is mounted on the chassis frame 610 and electrically connected to the control device 400 via a position detection component cable 667. The coil disk 603 is equipped with a triggering device. During the rotation of the coil disk 603, its triggering device can trigger the position detection component 664, thereby allowing the control device 400 to determine the rotational position of the coil disk 603. For example, the position detection component 664 includes an optocoupler sensor, and the triggering device can be activated by blocking the light emitted by the optocoupler sensor. Figure 9 and Figure 10 This shows the position of the coil disk 603 before and after rotation. The control device 400 can use the rotation position of the coil disk 603 when the trigger device triggers the position detection component 664 as a reference position, and combine it with the output angle of the stepper motor 613 to determine the rotation angle of the coil disk 603.

[0168] exist Figure 11 In the illustrated embodiment, the electromagnetic heating module 600 uses an electromagnetic coil 606 coaxial with itself to generate an alternating magnetic field. Simultaneously, a non-uniformly distributed magnetic medium along the circumference makes this alternating magnetic field non-uniform; the magnetic field strength is high in the medium with high permeability and low in the medium with low permeability. The electromagnetic heating module 600 is configured to allow the magnetic medium to rotate, thereby achieving rotation of the magnetic field relative to the cooking container 300.

[0169] For example, the electromagnetic coil 606 and the coil disk 603 are concentrically arranged on the coil disk 603, and the winding center of the electromagnetic coil 606 and the central axis of the coil disk 603 are both the central axis P1 of the electromagnetic heating module. The electromagnetic heating module 600 also includes a turntable 690. The turntable 690 is coaxial with the coil disk 603. The turntable 690 is located between the coil disk 603 and the cooking container 300. The turntable 690 is alternately divided into N first regions 691 and N second regions 692 along the circumferential direction. Among them, the first region 691 is made of a different material than the body of the turntable 690, while the second region 692 is entirely made of the material of the body of the turntable 690, so that the magnetic field strength of the alternating magnetic field generated by the coil 606 at the first region 691 is different from the magnetic field strength at the second region 692, thereby forming a non-uniformly distributed alternating magnetic field along the circumferential direction of the electromagnetic heating module 600. For example, a magnetic field line converging element 695 is provided at the first region 691. The material of the magnetic field line converging element 695 is, for example, a metal with a permeability greater than or equal to 100 B / H. The material of the body of the turntable 690 is, for example, a non-magnetic material or a metal with a permeability less than or equal to 10 B / H. Since the permeability of the second material is greater than that of the first material, the magnetic field lines of the alternating magnetic field are focused (converged) at the magnetic field line converging element 695, making the magnetic field strength at the first region 691 greater than that at the second region 692. A strong magnetic region is formed at the first region 691, and a weak magnetic region is formed at the second region 692.

[0170] exist Figure 11 In the embodiment shown, the cooking appliance 100 is configured, for example, such that the turntable 690 can rotate about axis P1, while the cooking container 300 can rotate without the turntable 603 rotating, thereby rotating the magnetic field while the cooking container 300 does not rotate.

[0171] exist Figure 12In the illustrated embodiment, the electromagnetic heating module 600 uses an electromagnetic coil 606 coaxial with itself to generate an alternating magnetic field. Simultaneously, a magnetic disk with circumferentially arranged magnetic perforations makes this alternating magnetic field non-uniform, with a high magnetic field strength at the perforations and a low magnetic field strength at the non-magnetic areas. The electromagnetic heating module 600 is configured to rotate the magnetic disk, thereby rotating the magnetic field relative to the cooking container 300. For example, the turntable 690 is made of a first material, such as a metal with a permeability less than or equal to 10 B / H. Therefore, the turntable 690 forms a magnetic disk that almost prevents magnetic field lines from passing through. The first region 691 is constructed as a through-hole with a certain area, allowing magnetic field lines to pass through, i.e., a magnetic perforation hole. Thus, the alternating magnetic field in the first region 691 has more magnetic field lines than in the second region 692, making the magnetic field strength in the first region 691 greater than that in the second region 692. The first region 691 forms a strong magnetic region, and the second region 692 forms a weak magnetic region. Cooking utensil 100 is configured, for example, such that turntable 690 can rotate about axis P1, while cooking container 300 can keep turntable 603 from rotating.

[0172] Of course, the electromagnetic heating cooking appliance 100 can also be configured such that the cooking container 300 can rotate relative to the electromagnetic heating module 600 around the central axis P2 of the cooking container, thereby realizing the rotation of the cooking container 300 relative to the magnetic field.

[0173] In summary, the electromagnetic heating module 600 is constructed such that the alternating magnetic field has N strong magnetic regions and N weak magnetic regions alternately distributed along the circumferential direction of the electromagnetic heating module 600, wherein the magnetic field strength of the strong magnetic regions is greater than that of the weak magnetic regions. In the illustrated embodiment, the portion of the electromagnetic heating module 600 corresponding to the location of the electromagnetic coil 606 is the strong magnetic region, and the portion corresponding to the gap between two electromagnetic coils 606 is the weak magnetic region. Preferably, the N strong magnetic regions and the N weak magnetic regions are equally spaced along the circumferential direction of the electromagnetic heating module 600. The electromagnetic heating cooking appliance 100 is constructed such that, when the cooking container 300 is at least above the electromagnetic heating module 600, at least a portion of the electromagnetic heating module 600 and one of the cooking container 300 are rotatable relative to the other. Considering the limited length of the cable, the range of the relative rotation angle is, for example, 360 / N degrees (±180 / N degrees), thereby ensuring that no part of the cooking container 300 is missed during heating, and that the cooking container 300 is heated comprehensively and evenly. In the illustrated implementation, N = 3.

[0174] The relative rotation between the cooking container 300 and the magnetic field can occur when the electromagnetic coil 606 is energized. That is, the magnetic field of the electromagnetic heating module 600 rotates while simultaneously heating the cooking container 300, ensuring uniform heating and reducing the horizontal temperature difference between different parts of the cooking container 300 on the same horizontal plane. Alternatively, the relative rotation between the cooking container 300 and the magnetic field can occur alternately with the energization of the electromagnetic coil 606; that is, rotation without heating and heating without rotation, thereby reducing the vertical temperature difference on the same vertical plane at each circumferential position. This operation achieves uniform heating in one revolution. Alternatively, the heating sequence and the rotation sequence can be controlled independently. In this application, regardless of whether rotation and heating occur simultaneously, uniform heating is achieved by changing the heating position through rotation. The control device 400 can control the drive device and the electromagnetic coil 606 to work together in various combinations to achieve the desired cooking effect. In this application, preferably, all electromagnetic coils 606 are energized whenever heating is required.

[0175] The cooking process of the cooking appliance 100 includes, for example, a water absorption process, a boiling process, a maintaining-boil process, a simmering process, and a heat preservation process. In the water absorption process, the ingredients fully absorb water in warm water (for example, the temperature at the bottom of the cooking cavity is maintained at 30-70°C, also known as the water absorption temperature) to improve texture. Typically, the water absorption process lasts for a preset duration (e.g., 1-90 minutes). The average heating power of the water absorption process does not exceed, for example, 1000W. To save cooking time, a short period of full-power heating can be performed first, followed by stopping the heating. The cooking appliance 100 also supports cold water soaking and / or hot water cooking. When soaking in cold water, the electromagnetic heating module 600 does not operate during the water absorption process. When cooking with hot water, the water initially added to the cooking cavity is hot water, and the water absorption process can be omitted or the electromagnetic heating module 600 can be deactivated during the water absorption process.

[0176] In the boiling stage, the cooking appliance 100 heats the food to near-boiling temperature using high heat (e.g., the temperature at the top of the cooking chamber is 70-90°C, also known as the boiling temperature), and then maintains boiling in the sustaining stage to ensure the food is basically cooked. The average heating power of the boiling stage is, for example, 400-2000W, and full power heating is possible. In some cases, such as in high-altitude environments, where the temperature rise in the cooking chamber is limited, the sustaining stage can be initiated after the boiling stage has lasted for a preset boiling time (not exceeding 40 minutes).

[0177] The boiling process can continue for a preset boiling time (e.g., 4-40 minutes), or proceed to the next process when the heating temperature of the cooking cavity reaches a preset boiling temperature (e.g., 100-130°C). The average heating power of the boiling process is, for example, 200-1000W.

[0178] The braising process dries out any remaining free moisture, further cooking the ingredients. This process can continue for a preset braising time (e.g., 2-20 minutes) and maintain the food temperature within a certain range, such as 100-130°C at the bottom of the cooking cavity, also known as the braising temperature. Alternatively, the braising process can proceed to the next step when the cooking cavity reaches the preset braising temperature (e.g., 120-140°C at the bottom of the cooking cavity). The average heating power of the braising process is, for example, 100-1000W.

[0179] Finally, a low heat is used to keep the food warm during the heat-keeping process, ensuring the user can enjoy hot food. This heat-keeping process typically maintains the food temperature at a set temperature (e.g., 40-80°C at the bottom of the cooking cavity). This process usually lasts for a relatively long time (e.g., at least 30 minutes) and is ended manually. The average heating power of the rice-cooking process is, for example, 100-1000W.

[0180] The cooking process of cooking porridge or soup using cooking appliance 100 includes, for example, a water absorption process, a boiling process, a boiling maintenance process, and a heat preservation process. Compared to the cooking process of cooking rice, when cooking porridge or soup, the boiling maintenance process usually lasts for a preset boiling time (e.g., 8-60 minutes), and the heating temperature of the cooking cavity is controlled during this period to prevent overflow.

[0181] In each process, the electromagnetic heating module 600 (specifically, the electromagnetic coil 606), which serves as the heating device, can operate in a power-adjustable mode. In each power-adjustment cycle, the electromagnetic coil 606 is energized for a preset energizing time and de-energized for a preset de-energizing time; the sum of the preset energizing and de-energizing times constitutes the duration of one power-adjustment cycle. Due to different cooking objectives or effects, the average power of each process may differ; for example, the preset energizing time may vary between different processes. Also, because the cooking cavity may have temperature requirements in each process, the power of the electromagnetic heating module 600 may not be constant (the preset energizing time may differ between different power-adjustment cycles within the same process), and it may not be constantly in operation (in this text, the electromagnetic heating module 600 during a power-adjustment cycle is considered to be in operation).

[0182] Typically, the electromagnetic coil 606 is not visible in the finished product, for example, it is obscured by the coil plate 603. This prevents users from perceiving the multi-point heat source rotation heating characteristic of the cooking appliance 100, and from understanding the working status of the electromagnetic heating module 600. Therefore, as Figure 13 As shown, the cooking appliance 100 also includes a status display device 210 for indicating the operating status of the electromagnetic heating module 600. The status display device 210 is electrically connected to the control device 400 to operate under the control of the control device 400. The status display device 210 may be disposed on the cover 200, and its display signal may be emitted, for example, from the upper surface of the cover 200.

[0183] For example, the control device 400 is configured to simultaneously perform the following two operations during at least a portion of the cooking process: Operation 1, causing the cooking container 300 to rotate relative to at least a portion of the electromagnetic heating module 600 about a central axis (P1 or P2), so that the alternating magnetic field of the electromagnetic coil 606 and the cooking container 300 rotate relative to each other; Operation 2, causing the status display device 210 to output at least a first visual signal representing the relative rotation between the alternating magnetic field and the cooking container 300. Thus, the status display device 210 can indicate the relative rotation between the alternating magnetic field and the cooking container 300, for example, indicating that the electromagnetic heating module 600 is rotating. In this application, "visual signal" refers to a signal that can be visually perceived.

[0184] For a more intuitive understanding, preferably, the position of the first visual signal changes continuously along a fixed circumferential direction on the circumference (i.e., on the circle), presenting the effect of the first visual signal moving along the circumference, corresponding to the relative rotation between the alternating magnetic field and the cooking container 300. This fixed circumferential direction can correspond to the direction of relative rotation between the alternating magnetic field and the cooking container 300. For example, when the electromagnetic heating module 600 rotates clockwise, the position of the first visual signal moves clockwise on the circumference; when the electromagnetic heating module 600 rotates counterclockwise, the position of the first visual signal moves counterclockwise on the circumference. It is understood that "fixed circumferential direction" does not mean there is only one circumferential direction, but rather that one circumferential direction is maintained during the same relative rotation. Furthermore, corresponding to the aforementioned alternating N strong magnetic regions and N weak magnetic regions of the alternating magnetic field, the position of the first visual signal changes continuously between N positions on the circumference along the fixed circumferential direction, for example, cyclically changing between N positions on the circumference along the fixed circumferential direction.

[0185] In the multi-point heat source rotation heating technical solution of this application, the electromagnetic coil 606 is the core component for implementing heating. Preferably, the operating status display device 210 also indicates the operating status of the electromagnetic coil 606. For example, the control device 400 is also configured to simultaneously perform the following operations three and four during at least a portion of the cooking process: Operation three, energizing the electromagnetic coil 606 (or enabling the electromagnetic heating module 600 to operate in a power-adjustable heating mode); Operation four, causing the operating status display device 210 to output a second visual signal representing that the electromagnetic coil 606 is energized. The second visual signal is different from the first visual signal.

[0186] For example, the operating condition display device 210 includes at least one first indicator light 211, and the first visual signal is a light signal emitted by the first indicator light 211. For example, the operating condition display device 210 includes N first indicator lights 211. For example, the operating condition display device 210 includes multiple first indicator lights 211, all of which are arranged at intervals on the same circumference. All first indicator lights 211 are illuminated in a first illumination mode to form the first visual signal. The first illumination mode is to sequentially illuminate all first indicator lights 211 along a fixed circumferential direction, for example, to cyclically illuminate all first indicator lights 211 along a fixed circumferential direction.

[0187] The first indicator light 211 is linked to the relative rotation between the alternating magnetic field and the cooking container 300, thus allowing for further information about the relative rotation. For example, the control device 400 is also configured to illuminate all the first indicator lights 211 in a fifth illumination mode, where the light signal (fifth visual signal) of the first indicator lights 211 indicates a malfunction in the relative rotation between the cooking container 300 and the alternating magnetic field. This fifth illumination mode differs from the first illumination mode. For example, the fifth illumination mode could be illuminating all the first indicator lights 211 or flashing them. As another example, when all the first indicator lights 211 are off, it indicates that no relative rotation has occurred between the cooking container 300 and the alternating magnetic field.

[0188] Alternatively, the operating condition display device 210 may include only a first indicator light 211, which can perform circular motion under the control of the control device 400. For example, the first indicator light 211 is connected to the output shaft of a motor. When the motor is working, the output shaft of the motor rotates, causing the first indicator light 211 to perform circular motion. The first indicator light 211 can also emit a first visual signal while it is lit and performing circular motion.

[0189] Preferably, such as Figure 13 As shown, the operating status display device 210 also includes at least one second indicator light 212 for indicating the operating status of the electromagnetic coil 606. The control device 400 is further configured to simultaneously perform operation three and operation four during at least a portion of the cooking process in the following manner: operation three, energizing the electromagnetic coil 606 (or operating the electromagnetic heating module 600 in a power-adjustable heating mode); operation four, illuminating all the second indicator lights 212 in a first additional illumination mode to output a light signal (second visual signal) representing the energization of the electromagnetic coil. The first additional illumination mode is, for example, simultaneously illuminating all the second indicator lights 212.

[0190] Furthermore, preferably, during at least a portion of the time the second indicator light 212 is illuminated in the first additional lighting mode, that is, during at least a portion of the time the electromagnetic coil 606 is energized for heating, the brightness of the second indicator light 212 corresponds to the heating power of the electromagnetic heating module 600 (i.e., the heating power of the electromagnetic coil 606). When the heating power of the electromagnetic heating module 600 is high, the brightness of the second indicator light 212 is greater; when the heating power of the electromagnetic heating module 600 is low, the brightness of the second indicator light 212 is smaller. Thus, the user can understand the heating level based on the brightness of the second indicator light 212. This display mode can be applied, for example, in the boiling and maintaining boiling processes.

[0191] Alternatively, during at least a portion of the time when the second indicator light 212 is illuminated in the first additional lighting mode, the brightness of the second indicator light 21 exhibits a breathing light effect, that is, periodically alternating between bright and dim. In this case, the brightness of the second indicator light 212 is independent of the heating power; regardless of the heating power, the brightness of the second indicator light 212 repeatedly dims and brightens according to a fixed cycle. This signal can be linked to the cooking progress. For example, during the rice-cooking and heat-keeping processes, when the electromagnetic heating module 600 is in the adjustable heating mode, the second indicator light 212 exhibits a breathing light effect.

[0192] When the electromagnetic coil 606 is not energized, or when the electromagnetic heating module 600 has no adjustable power output, the second indicator light 212 will not light up.

[0193] Optionally, the control device 400 is further configured to illuminate all the second indicator lights 212 in a second additional lighting mode to output a light signal (fourth visual signal) indicating a malfunction of the electromagnetic heating module 606, wherein the second additional lighting mode differs from the first additional lighting mode. The second additional lighting mode is used to indicate that the electromagnetic heating module 606 is unable to output power. The second additional lighting mode may be, for example, all the second indicator lights 212 flashing rapidly (the flashing frequency is significantly higher than the brightness change frequency of the breathing light), or all the second indicator lights 212 illuminating sequentially.

[0194] For aesthetic purposes and to make full use of space, the operating status display device 210 may include multiple second indicator lights 212. The number of second indicator lights 212 is the same as the number of first indicator lights 211. All the second indicator lights 212 and all the first indicator lights 211 are arranged alternately on the same circumference, for example, alternately arranged at equal intervals on the same circumference. For example, the number of second indicator lights 212 is N, so that the number of second indicator lights 212 is consistent with the number of strong magnetic areas, for example, the number of electromagnetic coils 606, which can more intuitively reflect the structure of the electromagnetic heating module 600.

[0195] To clearly distinguish the first indicator light 211 and the second indicator light 212, the light signals of the first indicator light 211 and the second indicator light 212 have distinctly different visual perceptions. For example, the color of the first indicator light 211 is different from the color of the second indicator light 212. Alternatively, the shape of the light signal of the first indicator light 211 is different from the shape of the light signal of the second indicator light 212. For example, as... Figure 13 As shown, the light signal of the first indicator light 211 presents an arrow-like display effect, that is, it has an arrow-shaped outline, which helps to clearly indicate the direction of rotation. The light signal of the second indicator light 212 presents a coil-like display effect, that is, it has a coil-shaped outline, which more vividly represents the electromagnetic coil 606. Of course, the light signal of the second indicator light 212 can also present other images (such as flames) to indicate heating.

[0196] exist Figure 13 In the illustrated embodiment, the first indicator light 211 and the second indicator light 212 display the rotation condition and the heating condition respectively, so that the user receives comprehensive and clear instruction information.

[0197] exist Figure 14 In the embodiment shown, the operating condition display device 210 only includes the first indicator light 211, so both the rotation operating condition and the heating operating condition need to be displayed through the first indicator light 211.

[0198] For example, the control device 400 is further configured to simultaneously perform operation three and operation four during at least a portion of the cooking process in the following manner: operation three, energizing the electromagnetic coil 606 (or operating the electromagnetic heating module 600 in a power-adjustable heating mode); operation four, illuminating all the first indicator lights 211 in a second illumination mode to output a light signal (second visual signal) representing that the electromagnetic coil 606 is energized, wherein the second illumination mode differs from the first illumination mode. The second illumination mode, for example, is to illuminate all the first indicator lights 211 simultaneously. When rotation and heating occur simultaneously, the first visual signal and the second visual signal can be displayed alternately, or the first visual signal can be displayed preferentially.

[0199] Alternatively, for example, the control device 400 may also be configured to simultaneously perform the following operations seven and eight during at least a portion of the cooking process: Operation seven, de-energizing the electromagnetic coil 606 (or de-energizing the electromagnetic heating module 600); Operation eight, illuminating all the first indicator lights 211 in a third illumination mode to output a light signal (third visual signal) representing that the electromagnetic coil 606 is not energized, wherein the third illumination mode differs from the first and second illumination modes. The third illumination mode may, for example, be extinguishing all the first indicator lights 211, or illuminating all the first indicator lights 211 simultaneously, but with a different light color than the second illumination mode. For example, each first indicator light 211 may be a light assembly composed of lights of different colors, with different colors indicating different information.

[0200] Alternatively, for example, the control device 400 may also be configured to illuminate all the first indicator lights 211 in a fourth illumination mode to output a light signal (fourth visual signal) representing a malfunction of the electromagnetic heating module 600, wherein the fourth illumination mode is different from the first, second, and third illumination modes. The fourth illumination mode may be, for example, to make all the first indicator lights 211 flash in a combination of long and short flashes, or to be illuminated in a different color.

[0201] Compared to Figure 13 Example, Figure 14 Examples of this can save on hardware costs.

[0202] The outer casing of the cooking appliance 100 (e.g., the cover of the lid 200) includes a cover plate for obscuring the indicator light of the status display device 210, such that when the indicator light is not illuminated, it is substantially invisible from the outer surface of the cooking appliance 100 (e.g., ...). Figure 15 (As shown). This allows for a cleaner outer surface of the cooking appliance 100. The cover can also be understood as the outer shell of the cooking appliance 100. To ensure the indicator light is visible when turned on, the cover has a light-transmitting area corresponding to the indicator light's position. When the indicator light is illuminated, the light signal from the indicator light is emitted from the light-transmitting area, and the shape of the light signal matches the shape of the light-transmitting area. (As shown) Figure 13 and Figure 14 The arrows and coils in the diagram represent the shapes of the light-transmitting areas. These light-transmitting areas are, for example, transparent or semi-transparent sections of a mask, while other parts of the mask are opaque. Indicator lights illuminate these light-transmitting areas, allowing the user to see the indicator signal. The mask may be constructed of, for example, coated glass or a plastic lampshade.

[0203] It is understandable that all indicator lights on the operating status display device 210 operate under the control of the control device 400. It is also understandable that there are multiple ways to illuminate the indicator lights; as long as the indicated information content and the illumination method differ, the expected function can be achieved. This application does not impose strict requirements on the correspondence between the illumination method (i.e., lighting effect) of the indicator lights and their indicated content.

[0204] like Figure 13 and Figure 14 As shown, the cooking appliance 100 includes a human-computer interaction device 220, which enables human-computer interaction between the user and the cooking appliance 100. The human-computer interaction device 220 is, for example, located on the lid 200. The human-computer interaction device 220 may include various buttons, indicator lights, displays, etc. In this application, the information displayed by the status display device 210 is part of the human-computer interaction content, and the status display device 210 can be understood as part of the human-computer interaction device 220.

[0205] exist Figure 16 In the illustrated embodiment, the working condition display device 210 includes a display screen. For example, the working condition display device 210 shares the display screen with the human-computer interaction device 220 of the cooking appliance 100. Alternatively, based on the display screen included in the human-computer interaction device 220, the cooking appliance 100 does not need additional hardware; the function of the working condition display device 210 can be achieved simply by designing the display screen's image. In such an embodiment, the first visual signal is a light spot 213 that continuously changes position along a fixed circumferential direction on the circumference of the display screen. The shape of the light spot can be a basic geometric shape such as a circle, square, triangle, or polygon, or it can be a star, arrow, spiral, animal, flower, or a more complex shape; this application does not limit this. For example, due to the dense arrangement of its liquid crystal dot matrix, the display screen presents a more continuous circular motion effect of the light signal.

[0206] Understandably, any lighting effects of the aforementioned indicator lights 211 and 212 can be displayed on the screen. Furthermore, the screen can also display text information, thus providing a richer indication of the operating status of the electromagnetic heating module 600.

[0207] The status display device 210 only functions as an indicator after the cooking appliance 100 is powered on. To allow users to understand the multi-point heat source heating characteristics of the cooking appliance 100 earlier and more intuitively, the electromagnetic heating module 600 is equipped with a visualization mechanism to indicate the location of the multi-point heat source of the electromagnetic heating module 600, i.e., the location of the N strong magnetic areas. A visualization mechanism means that it is visually perceptible and can be intuitively perceived by the user. For example, the visualization mechanism allows the user to perceive the location of the N strong magnetic areas when handling the cooking container 300.

[0208] For example, such as Figure 7 As shown, in the technical solution employing N electromagnetic coils 606 that are not concentric with the coil disk 603, the visualization mechanism can be that at least the portion of the coil disk 603 corresponding to the coils 606 is transparent, allowing the user to directly see the coils 606. Alternatively, the visualization mechanism can be that the visual effect of the portion of the coil disk 603 corresponding to the coils 606 differs from other portions, for example, by having a unique color, shape, or pattern. For instance, the upper surface of the portion of the coil disk 603 corresponding to the coils 606 may have simulated coil texture 680, which is clearly visible from the top of the coil disk 603, visually indicating the position of the coils 606 to the user. Alternatively, the visualization mechanism can be that the portion of the coil disk 603 corresponding to the coils 606 is detachable, allowing the coils 606 to be exposed. In this case, the detachable structure (e.g., clips, grippers) of the portion of the coil disk 603 corresponding to the coils 606 has a distinct visual effect (a visual effect different from the surrounding area), which can alert the user.

[0209] Or, in Figure 11 and Figure 12 In the embodiment shown, the turntable 690 itself has a non-homogeneous material or structure, which makes the first region 691 and the second region 692 have significantly different appearances. The first region 691 indicates the strong magnetic area, which eliminates the need for additional design to form a visualization mechanism.

[0210] Of course, visualization mechanisms can also be other structural or design features that indicate the location of strong magnetic areas. Furthermore, multiple visualization mechanisms can be used simultaneously.

[0211] The processes and steps described in all the preferred embodiments above are merely examples. Unless adverse effects occur, various processing operations can be performed in a different order than those described above. The order of steps in the above process can also be added, combined, or deleted according to actual needs.

[0212] In understanding the scope of this application, the term "comprising" and its derivatives, as used herein, are intended to be open-ended terms that specify the presence of a described feature, element, component, group, whole, and / or step, but do not exclude the presence of other undescribed features, elements, components, groups, wholes, and / or steps. This concept also applies to words with similar meanings, such as the terms "comprising," "having," and their derivatives.

[0213] The term "attached" or "joined" as used herein includes: a construction in which one element is directly fixed to another element by fixing it directly to another element; a construction in which one element is indirectly fixed to another element by fixing it to an intermediate member, which in turn is fixed to another element; and a construction in which one element is integral with another element, that is, one element is substantially part of another element. This definition also applies to words with similar meanings, such as "connect," "joint," "couple," "install," "adhere," "fix," and their derivatives. Finally, degree terms such as "substantially," "approximately," and "approximately" as used herein indicate the amount of deviation from which modifications to the terminology do not significantly alter the final result.

[0214] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0215] This application has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the described embodiments. Furthermore, those skilled in the art will understand that this application is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this application, all of which fall within the scope of protection claimed in this application.

Claims

1. An electromagnetic heating cooking appliance, characterized in that, include: Control device; An electromagnetic heating module is electrically connected to the control device. The electromagnetic heating module includes at least one electromagnetic coil. The electromagnetic coil is used to generate an alternating magnetic field after being energized under the control of the control device. The electromagnetic heating module is configured such that the magnetic field region of the alternating magnetic field is non-uniformly distributed in the circumferential direction of the electromagnetic heating module. A cooking container for holding food ingredients, the cooking container comprising a ferromagnetic material, the cooking container being disposed within the magnetically inductive area of ​​the electromagnetic heating module, and the central axis of the cooking container being substantially coincident with the central axis of the electromagnetic heating module; and The operating status display device is electrically connected to the control device. The control device is configured to perform the following tasks simultaneously during at least a portion of the cooking process: The cooking container and at least a portion of the electromagnetic heating module are rotated relative to each other about the central axis, so that the alternating magnetic field and the cooking container rotate relative to each other. and The operating condition display device shall output at least a first visual signal representing the relative rotation.

2. The electromagnetic heating cooking appliance according to claim 1, characterized in that, The electromagnetic heating cooking appliance is constructed such that the position of the first visual signal changes continuously along a fixed circumferential direction on the circumference, corresponding to the relative rotation.

3. The electromagnetic heating cooking appliance according to claim 2, characterized in that, The fixed circumferential direction corresponds to the direction of the relative rotation; and / or The electromagnetic heating cooking appliance is configured such that the position of the first visual signal cyclically changes between several fixed positions on the circumference along a fixed circumferential direction, corresponding to the relative rotation.

4. The electromagnetic heating cooking appliance according to claim 2, characterized in that, The operating condition display device includes a display screen, and the first visual signal is a light spot whose position changes continuously along the fixed circumferential direction on the circumference of the display screen.

5. The electromagnetic heating cooking appliance according to claim 2, characterized in that, The control device is also configured to perform the following tasks simultaneously during at least a portion of the cooking process: Energize the electromagnetic coil; and The operating condition display device outputs a second visual signal representing that the electromagnetic coil is energized, and the second visual signal is different from the first visual signal.

6. The electromagnetic heating cooking appliance according to claim 5, characterized in that, The operating condition display device includes at least one first indicator light, and the first visual signal is the light signal emitted by the first indicator light.

7. The electromagnetic heating cooking appliance according to claim 6, characterized in that, The operating condition display device includes a plurality of first indicator lights, all of which are arranged at intervals on the same circumference. The control device is configured to illuminate all the first indicator lights in a first illumination mode to form the first visual signal. The first lighting method is to sequentially light up all the first indicator lights along the fixed circumferential direction.

8. The electromagnetic heating cooking appliance according to claim 7, characterized in that, The control device is further configured to illuminate all the first indicator lights in a second illumination mode to output the second visual signal, wherein the second illumination mode is different from the first illumination mode.

9. The electromagnetic heating cooking appliance according to claim 8, characterized in that, The control device is also configured to perform the following tasks simultaneously during at least a portion of the cooking process: The electromagnetic coil is not energized; and All the first indicator lights are illuminated in a third illumination mode to output a third visual signal representing that the electromagnetic coil is not energized, wherein the third illumination mode is different from the first illumination mode and the second illumination mode.

10. The electromagnetic heating cooking appliance according to claim 7, characterized in that, The control device is further configured to illuminate all the first indicator lights in a fourth illumination mode to output a fourth visual signal representing a malfunction of the electromagnetic heating module, wherein the fourth illumination mode is different from the first illumination mode.

11. The electromagnetic heating cooking appliance according to claim 7, characterized in that, The operating condition display device also includes at least one second indicator light. The control device is also configured to perform the following tasks simultaneously during at least a portion of the cooking process: Energize the electromagnetic coil; and All the second indicator lights are illuminated in a first additional lighting mode to output the second visual signal.

12. The electromagnetic heating cooking appliance according to claim 11, characterized in that, The first additional lighting method is to simultaneously light up all the second indicator lights.

13. The electromagnetic heating cooking appliance according to claim 11, characterized in that, During at least a portion of the time period when the second indicator light is illuminated in the first additional lighting mode, the brightness of the second indicator light corresponds to the power of the electromagnetic heating module. When the power of the electromagnetic heating module is high, the brightness of the second indicator light is greater, and when the power of the electromagnetic heating module is low, the brightness of the second indicator light is smaller.

14. The electromagnetic heating cooking appliance according to claim 11, characterized in that, During at least a portion of the time period when the second indicator light is illuminated in the first additional lighting manner, the brightness of the second indicator light exhibits a breathing light effect.

15. The electromagnetic heating cooking appliance according to claim 11, characterized in that, When the electromagnetic coil is not energized, the second indicator light will not illuminate.

16. The electromagnetic heating cooking appliance according to claim 11, characterized in that, The first indicator light has a different color than the second indicator light; and / or The shape of the light signal of the first indicator light is different from the shape of the light signal of the second indicator light.

17. The electromagnetic heating cooking appliance according to claim 11, characterized in that, The light signal of the first indicator light presents an arrow display effect.

18. The electromagnetic heating cooking appliance according to claim 11, characterized in that, The control device is further configured to illuminate all the second indicator lights in a second additional lighting mode to output a fourth visual signal representing a malfunction of the electromagnetic heating module, wherein the second additional lighting mode is different from the first additional lighting mode.

19. The electromagnetic heating cooking appliance according to claim 11, characterized in that, The operating condition display device includes a plurality of second indicator lights, the number of which is the same as the number of first indicator lights, and all the second indicator lights are arranged alternately with the first indicator lights on the same circumference.

20. The electromagnetic heating cooking appliance according to claim 19, characterized in that, All the second indicator lights are arranged alternately with the first indicator lights at equal intervals on the same circumference.

21. The electromagnetic heating cooking appliance according to claim 11, characterized in that, The electromagnetic heating module includes N electromagnetic coils, all of which are spaced apart along the circumferential direction of the electromagnetic heating module. The light signal of the second indicator light presents the display effect of the coils.

22. The electromagnetic heating cooking appliance according to claim 7, characterized in that, The control device is further configured to illuminate all the first indicator lights in a fifth illumination mode to output a fifth visual signal representing a malfunction in the relative rotation between the cooking container and the alternating magnetic field, wherein the fifth illumination mode is different from the first illumination mode.

23. The electromagnetic heating cooking appliance according to claim 2, characterized in that, The alternating magnetic field has N strong magnetic regions and N weak magnetic regions that are alternately distributed along the circumferential direction of the electromagnetic heating module. The magnetic field strength of the strong magnetic region is greater than that of the weak magnetic region. The position of the first visualized signal changes continuously among the N positions on the circumference, where N is a positive integer greater than or equal to 2.

24. The electromagnetic heating cooking appliance according to claim 23, characterized in that, The N strong magnetic regions are equally spaced along the circumferential direction of the electromagnetic heating module, and the position of the first visualized signal continuously changes among the N equally spaced positions on the circumference.

25. The electromagnetic heating cooking appliance according to claim 1, characterized in that, The operating status display device includes an indicator light, and the outer shell of the electromagnetic heating cooking appliance includes a cover plate. The cover plate is used to cover the indicator light so that when the indicator light is not lit, the indicator light is basically invisible from the outer surface of the cooking appliance.

26. The electromagnetic heating cooking appliance according to claim 25, characterized in that, The mask has a light-transmitting area corresponding to the position of the indicator light. When the indicator light is lit, the shape of the light signal of the indicator light is consistent with the shape of the light-transmitting area.

27. The electromagnetic heating cooking appliance according to claim 1, characterized in that, The cooking container is generally shaped as a body of revolution about its central axis; and / or The electromagnetic heating cooking appliance is configured such that at least a portion of the electromagnetic heating module is rotatable relative to the cooking container about the central axis of the electromagnetic heating module.

28. The electromagnetic heating cooking appliance according to any one of claims 1 to 27, characterized in that, The operating condition display device is installed on the lid of the electromagnetic heating cooking appliance, and the first visual signal is emitted from the upper surface of the lid.

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