Cooking appliance

Abstract

The application provides a cooking utensil, comprising a shell, a heating container arranged in the shell, and a coil disc arranged in the shell and located outside the heating container, wherein a coil is wound on the coil disc, and the coil generates a magnetic field to heat the heating container when energized, and the distance between the coil disc and the heating container can be changed to adjust the heating power of the cooking utensil. The cooking utensil provided by the application can change the distance between the coil disc and the heating container, so that the intensity of the induction magnetic field of the heating container can be changed, the coupling between the coil disc and the heating container is adjusted, and the heating power of the cooking utensil can be changed during cooking. Therefore, the temperature can be smoothly changed by changing the heating power during cooking, the temperature fluctuation range during cooking is reduced, and the cooking effect of food is improved.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more specifically, to a cooking appliance. Background Technology

[0002] Currently, in electromagnetic heating cooking appliances, the food inside the inner pot is heated by the magnetic field between the coil and the inner pot. However, in these technologies, the position of the coil relative to the inner pot is fixed, and the heating power can only be controlled by turning the coil on and off. This results in large temperature fluctuations of the food inside the inner pot during cooking, which is not conducive to improving the cooking effect. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] Therefore, the present invention provides a cooking utensil.

[0005] In view of this, the present invention proposes a cooking utensil, including a housing; a heating container disposed in the housing; and a coil disposed inside the housing, the coil being located outside the heating container, a coil being wound on the coil, the coil on the coil generating a magnetic field when energized to heat the heating container, wherein the distance between the coil and the heating container can be varied to adjust the heating power of the cooking utensil.

[0006] The cooking appliance provided by this invention includes a shell, a heating container, and a coil. Both the heating container and the coil are housed within the shell. A coil is wound around the coil. When the coil is energized, it generates a magnetic field. The heating container heats up under the influence of this magnetic field, thus cooking the food inside. The distance between the coil and the heating container can be varied, thereby changing the intensity of the induced magnetic field in the heating container. This allows for adjustment of the coupling between the coil and the heating container, enabling variations in the heating power of the appliance during cooking. This variation in heating power allows for a smoother temperature transition during cooking, reducing temperature fluctuations and improving the cooking effect.

[0007] It should be noted that the movement of the coil and / or heating container can be manually controlled by the user or driven by a drive component.

[0008] The cooking appliance provided by the present invention may also have the following additional technical features:

[0009] In some embodiments, optionally, the coil can move relative to the heating container to change the distance between the coil and the heating container; and / or the heating container can move relative to the coil to change the distance between the coil and the heating container.

[0010] In this embodiment, during the adjustment of the distance between the coil and the heating container, the coil may move relative to the heating container to reduce driving energy consumption; the heating container may move relative to the coil; or both the coil and the heating container may move to adjust the distance between them.

[0011] In some embodiments, the coil is optionally located at the bottom of the heating container and / or at the side of the heating container.

[0012] In this embodiment, the coil can be set at the bottom of the heating container to reduce the space occupied in the height direction of the cooking appliance; the coil can also be set on the side of the heating container to increase the area surrounding the heating container and improve the uniformity of heating of the food inside the heating container.

[0013] In some embodiments, optionally, when the coil is located on the side of the heating container: the coil has a closed annular structure around the perimeter of the heating container, or an annular structure with an opening; and / or in a cross section perpendicular to the height direction of the cooking appliance, the position corresponding to the maximum area of ​​the heating container is located within the area surrounded by the coil; and / or when the coil is located at the bottom of the heating container, the projection of the heating container along the height direction of the cooking appliance covers the coil; and / or the coil located on the side of the heating container and the coil located at the bottom of the heating container are an integral structure or a separate structure.

[0014] In this embodiment, when the coil is located on the side of the heating container, the coil can be a closed annular structure to improve heating efficiency; or the coil can be constructed as an annular structure with an opening around its circumference, allowing different areas within the heating container to achieve different heating temperatures. This improves the fluidity of the food within the heating container during the boiling stage, thereby enhancing the uniformity of heating. When the coil is located at the bottom of the heating container, the heating container covers the bottom of the coil along the height of the cooking appliance, thus improving the utilization rate of the magnetic field generated by the coil. Optionally, if the amount of food corresponding to the location with the largest cross-sectional area of ​​the heating container is relatively large, and the coil surrounds the periphery of the heating container, the coil covering the location with the largest cross-sectional area ensures that the food at the location with the largest cross-sectional area receives sufficient heat, improving the uniformity of heating and thus enhancing the cooking effect. Optionally, the coil coil surrounding the side of the heating container and the coil coil located at the bottom of the heating container can be an integral structure to improve assembly efficiency; or the coil coil surrounding the side of the heating container and the coil coil located at the bottom of the heating container can be separate structures to facilitate driving the coil coil surrounding the side of the heating container and the coil coil located at the bottom of the heating container separately, thereby achieving adjustment of different heating powers and increasing the adjustable range of heating power.

[0015] In some embodiments, optionally, the heating container can be raised or lowered along the height direction of the cooking appliance to bring the heating container closer to or away from the coil; and / or the coil can be raised or lowered along the height direction of the cooking appliance to bring at least a portion of the coil closer to or away from the coil.

[0016] In this embodiment, when the heating container moves up or down along the height of the cooking appliance, it can move away from or closer to the coil, changing the distance between the coil and the heating container. This alters the magnetic field coupling of the heating container, thereby adjusting the heating power. Similarly, when the coil moves up or down along the height of the cooking appliance, it can move away from or closer to the heating container, changing the distance between them and altering the magnetic field coupling of the heating container. This configuration fully utilizes the vertical space of the cooking appliance, reducing the horizontal space occupied, thus saving horizontal space in the kitchen.

[0017] In some embodiments, the cooking appliance may optionally include: a support base disposed on the housing, and a heating container disposed on the support base.

[0018] In this embodiment, the support base can support the heating container to ensure the reliability of the heating container within the shell.

[0019] Optionally, the coil is located on the side of the support away from the heating container; or the coil is located inside the support; or the bottom of the support has an opening, and the coil is configured to move up and down between the outside and inside of the support.

[0020] In some embodiments, optionally, the coil is located on the side of the support away from the heating container; wherein the coil is located at the bottom of the support, and in a projection perpendicular to the height direction of the cooking appliance, the coil at least partially overlaps with the bottom of the support; and / or the coil is located on the side of the support.

[0021] In this embodiment, the coil is located at the bottom of the support base and at least partially overlaps with the bottom of the support base to reduce the space occupied by the cooking appliance in the horizontal direction. Optionally, the coil can also be located on the side of the support base to reduce the space occupied by the cooking appliance in the vertical direction.

[0022] In some embodiments, the cooking appliance may optionally include: a drive assembly for driving the coil to move closer to or away from the heating container; and / or for driving at least one of the heating container and the support to move closer to or away from the coil.

[0023] In this embodiment, the drive component moves at least one of the coil, support base, and heating container to achieve automated adjustment of heating power. The heating container is supported by the support base; therefore, the drive component can adjust the distance between the heating container and the coil by moving the support base to move the heating container. Alternatively, the drive component can directly drive the heating container to reduce the power required for movement and save energy in the cooking appliance.

[0024] In some embodiments, the drive assembly may optionally include: a drive portion; a motion portion connected to the drive portion, the motion portion being connected to a coil disk, the drive portion driving the motion portion to move such that at least a portion of the coil disk can move away from or near the heating container, and / or the motion portion being connected to at least one of the heating container and the support base, the drive portion driving the motion portion to move such that the heating container moves away from or near the coil disk.

[0025] In this embodiment, the driving component includes a driving part and a moving part. The driving part drives the moving part to move. The moving part is connected to the coil disk and thus drives the coil disk to move relative to the heating container, causing the magnetic field generated by the coil on the coil disk to move relative to the heating container, thereby changing the intensity of the induced magnetic field of the heating container. During the cooking process of the cooking appliance, the coupling between the coil disk and the heating container is adjusted, thereby enabling the heating power of the cooking appliance to change during the cooking process; and / or the moving part is connected to at least one of the heating container and the support base and thus drives the heating container to move relative to the coil disk, thereby changing the intensity of the induced magnetic field of the heating container. During the cooking process of the cooking appliance, the coupling between the coil disk and the heating container is adjusted, thereby enabling the heating power of the cooking appliance to change during the cooking process.

[0026] In some embodiments, the moving part is optionally provided with a first mating part, and at least one of the coil, heating container and support base is connected to the first mating part through a second mating part; wherein the driving part is capable of driving the moving part to rotate, and the first mating part rotates relative to the second mating part, so as to raise and lower the coil and / or the heating container.

[0027] In this embodiment, the moving part is provided with a first mating part. At least one of the coil, heating container and support base is connected to the first mating part through a second mating part. When the driving part drives the moving part to rotate, the first mating part rotates with the moving part. Since the first mating part and the second mating part are connected, the coil and / or heating container can be raised and lowered under the cooperation of the first mating part and the second mating part, so that the distance between the coil and the heating container changes. During the cooking process of the cooking appliance, the coupling between the coil and the heating container can be adjusted, thereby adjusting the heating power of the cooking appliance.

[0028] In some embodiments, optionally, when the heating container is connected to the first mating part through the second mating part, the bottom of the support base is provided with an opening, and the second mating part and the first mating part are connected through the opening.

[0029] In this embodiment, when the heating container is connected to the first mating part through the second mating part, the second mating part is connected to the first mating part through the opening at the bottom of the support base, thereby realizing the transmission of power.

[0030] Optionally, the first mating part is located on the outside of the support base, and a part of the second mating part is inserted into the opening so that a part of the second mating part contacts the heating container and the other part contacts the first mating part to realize the transmission of power. Alternatively, the second mating part is located inside the support base, and a part of the first mating part extends into the support base through the opening to contact the second mating part to realize the transmission of power.

[0031] In some embodiments, optionally, a portion of the second mating part extends into the support base through the opening and is supported on the bottom of the heating container, while another portion of the second mating part is located on the outside of the support base and contacts the first mating part.

[0032] In this embodiment, a portion of the second mating part extends into the support base through the opening to support the bottom of the heating container. Another portion of the second mating part is located on the outside of the support base and contacts the first mating part for transmission, enabling the heating container to rise and fall relative to the coil. This arrangement reduces the space occupied inside the support base, thereby reducing the material usage of the support base and lowering manufacturing costs.

[0033] In some embodiments, optionally, one of the first mating portion and the second mating portion includes a first concave-convex structure, and the other of the first mating portion and the second mating portion mates with the first concave-convex structure to cause the coil and / or heating container to move up and down between the first position and the second position.

[0034] In this embodiment, one of the first mating part and the second mating part includes a first concave-convex structure. During the rotation of the moving part, the other of the first mating part and the second mating part engages with the first concave-convex structure, causing the coil and / or heating container to rise and fall between the first position and the second position.

[0035] In some embodiments, optionally, the other of the first mating portion and the second mating portion includes a second convex-concave structure, the first convex-concave structure cooperating with the second convex-concave structure to move the coil and / or heating container between the first position and the second position.

[0036] In this embodiment, the other of the first mating part and the second mating part includes a second concave-convex structure. Through the cooperation of the first concave-convex structure and the second concave-convex structure, the movement of the coil or heating container can be made smoother.

[0037] In some embodiments, optionally, the first concave-convex structure includes a plurality of first protrusions, the plurality of first protrusions being distributed along the rotation direction of the moving part, a first concave portion being provided between adjacent first protrusions, and the plurality of first protrusions and the plurality of first concave portions being sequentially connected or spaced apart along the rotation direction of the moving part; and / or the second concave-convex structure includes a plurality of second protrusions, the plurality of second protrusions being distributed along the rotation direction of the moving part, a second concave portion being provided between adjacent second protrusions, and the plurality of second protrusions and the plurality of second concave portions being sequentially connected or spaced apart along the rotation direction of the moving part.

[0038] In this embodiment, the first concave-convex structure includes multiple first protrusions and first concave portions, and the second concave-convex structure includes multiple second protrusions and second concave portions. The first protrusions and first concave portions are sequentially connected along the rotation direction of the moving part, thereby making the movement of the coil more stable during the rotation of the moving part. This also allows the coil or heating container to continuously rise and fall with the continuous rotation of the moving part, resulting in a continuous change in the induced magnetic field of the heating container. This increases the adjustable range of heating power during the cooking process. Alternatively, the first protrusions and first concave portions can be spaced apart along the rotation direction, so that the rising and falling of the coil or heating container is not continuous, achieving intermittent rising and falling of the coil. Correspondingly, the second protrusions and second concave portions can also be sequentially connected or intermittently arranged.

[0039] In some embodiments, the driving part may optionally include a drive motor, the moving part may include a first gear, and a first engaging part may be disposed on one side of the first gear, wherein the driving part is disposed in the middle of the first gear to drive the first gear to rotate, or the moving part may also include a second gear, the second gear being connected to the drive motor, and the first gear meshing with the second gear.

[0040] In this embodiment, the driving unit includes a drive motor, and the moving unit includes a first gear. The drive motor is connected to the middle of the first gear, allowing the drive motor to directly drive the first gear to rotate, thus reducing the number of transmission components. Alternatively, the moving unit also includes a second gear, with the drive motor connected to the second gear. The first gear meshes with the second gear, and the drive motor drives the first gear to rotate through the second gear. In this way, the drive motor can be placed around the first gear, reducing the overall height of the cooking appliance. The cooking appliance proposed in this application achieves the lifting and lowering of the coil or heating container through the rotation of the drive motor and gear structure, making the lifting and lowering of the coil or heating container more stable and reliable. At the same time, converting rotation into lifting motion also reduces the space occupied by the drive components in the height direction.

[0041] In some embodiments, the cooking appliance may optionally include: a rolling element disposed on at least one of the first mating portion and the second mating portion, the first mating portion and the second mating portion being in contact through the rolling element; and / or at least one elastic element in a compressed state for pushing the coil or heating container to fit against the moving portion.

[0042] In this embodiment, the cooking appliance further includes a rolling element. The first mating part and the second mating part contact each other through the rolling element, converting the sliding friction between the first mating part and the second mating part into rolling friction, thereby reducing the frictional resistance between the first mating part and the second mating part. Optionally, the elastic element pushes the coil or heating container, causing the coil or heating container to fit against the moving part, thereby ensuring the reliability of the contact between the coil or heating container and the moving part, and ensuring the reliability of the coil's movement.

[0043] In some embodiments, optionally, the drive unit includes a hydraulic pump, the moving unit includes a hydraulic cylinder, the hydraulic cylinder is provided with a first support rod, the coil disc or heating container is provided on the first support rod, and the hydraulic pump drives the first support rod to rise and fall to drive the coil disc or heating container to rise and fall; and / or the drive unit includes a pneumatic pump, the moving unit includes a sealed cavity, a second support rod is provided on one side of the sealed cavity, the coil disc or heating container is provided on the second support rod, and the pneumatic pump drives the second support rod to rise and fall to drive the coil disc or heating container to rise and fall; and / or the drive unit includes a first magnetic element, the moving unit includes a second magnetic element, at least one of the first magnetic element and the second magnetic element is an electromagnet, the second magnetic element is connected to the coil disc or heating container, and when the electromagnet is energized, the first magnetic element and the second magnetic element attract or repel each other, causing the second magnetic element to move to push the coil disc or heating container to rise and fall.

[0044] In this embodiment, the driving unit can also directly drive the moving unit to rise and fall, thereby raising or lowering the coil or heating container. For example, the driving unit includes a hydraulic pump, and the moving unit includes a hydraulic cylinder. The hydraulic cylinder is equipped with a first support rod. When the hydraulic pump operates, it drives the hydraulic cylinder to extend or retract, thereby causing the first support rod to raise or lower the coil or heating container. This makes the distance between the coil and the heating container adjustable, and thus the heating power adjustable. Alternatively, the driving unit includes a pneumatic pump and a sealed cavity. The pneumatic pump drives the sealed cavity to expand or shrink, thereby causing the second support rod to raise or lower the coil. Or, the driving unit includes a first magnetic element, and the moving unit includes a second magnetic element. At least one of the first and second magnetic elements is an electromagnet. When the electromagnet is energized, the first and second magnetic elements attract or repel each other, thereby causing the second magnetic element to move. That is, the second magnetic element drives the coil or heating container to rise or fall, thereby adjusting the distance between the coil and the heating container, and thus adjusting the heating power.

[0045] In some embodiments, the drive assembly may optionally include a magnetic shielding structure, which is at least partially located between the drive unit and the coil disk, for isolating at least a portion of the drive unit from the magnetic field of the coil disk.

[0046] In this embodiment, since the drive unit includes a metal component, a magnetic shielding structure is provided between the drive unit and the coil disk to prevent the drive unit from being heated by the magnetic field, thereby ensuring the normal movement of the drive unit.

[0047] In some embodiments, the magnetic shielding structure may optionally include a magnetic shielding cover that surrounds at least a portion of the drive portion circumferentially; or the magnetic shielding structure may include a magnetic shielding ring; or the magnetic shielding structure may include a magnetic shielding wire; or the magnetic shielding structure may be provided with a magnetic shielding coating; and / or the magnetic shielding structure may be mounted on the drive portion.

[0048] In this embodiment, when the magnetic shielding structure includes a magnetic shielding cover, the magnetic shielding cover can fully surround or partially surround the driving part in the circumferential direction; of course, the magnetic shielding structure can also be a magnetic shielding ring, a magnetic shielding wire, or a magnetic shielding coating. Optionally, the magnetic shielding structure is installed on the driving part, so that the magnetic shielding structure and the driving part are integrated, improving assembly efficiency.

[0049] In some embodiments, optionally, a coil is wound on the support base, which, when energized, can generate a magnetic field to heat the heating container.

[0050] In this embodiment, a coil is wound on the support base, and the coil on the support base surrounds the heating container. When the coil on the support base is energized, the heating container can be heated. That is, both the coil on the coil disk and the coil on the support base can heat the heating container. Optionally, the coil on the coil disk and the coil on the support base can heat the heating container simultaneously, or the coil on the coil disk and the coil on the support base can heat the heating container separately.

[0051] In some embodiments, the coil can optionally oscillate relative to the heating container; and / or the coil can move in a height direction perpendicular to the cooking appliance; and / or the heating container can oscillate relative to the heating appliance; and / or the heating container can move relative to the coil in a height direction perpendicular to the cooking appliance.

[0052] In this embodiment, the distance between the coil and the heating container can be adjusted by one of them swinging relative to the other, or by one of them translating relative to the other in a direction perpendicular to the height direction, as long as the distance between the coil and the heating container can be adjusted.

[0053] In some embodiments, the distance between the coil and the heating container can be gradually varied to allow the heating power of the cooking appliance to be gradually adjusted.

[0054] In this embodiment, the distance between the coil and the heating container gradually changes, thus enabling the heating power of the cooking appliance to change gradually. In other words, the heating power of the cooking appliance can be infinitely adjusted, increasing the power adjustment range of the heating container. Consequently, during the cooking process, the heating power of the cooking appliance is smoothly adjusted, reducing temperature fluctuations and improving the cooking effect of the food.

[0055] In some embodiments, the cooking appliance may optionally include a magnetic field regulator disposed within the housing, wherein the magnetic field regulator is movable relative to the coil, or the coil is movable relative to the magnetic field regulator, so as to change the magnetic field of the coil of the coil; or the distance between the magnetic field regulator and the coil remains constant.

[0056] In this embodiment, the magnetic field regulating component is disposed within the housing, and the magnetic field regulating component can move relative to the coil, or the coil can move relative to the magnetic field regulating component. This causes a spatial positional change between the magnetic field regulating component and the coil, thereby affecting the magnetic field generated by the coil. This results in changes in the direction and density of the magnetic field lines generated by the coil, leading to changes in the magnetic flux on the heating container, and consequently, changes in the intensity of electromagnetic induction acting on the heating container. This achieves adjustment of the heating power of the cooking appliance. Furthermore, during the movement of at least one of the magnetic field regulating component and the coil, the position of the magnetic field regulating component or the coil changes gradually, allowing for a gradual change in the intensity of electromagnetic induction acting on the heating container. This achieves stepless adjustment of the heating power of the cooking appliance. During cooking, changes in heating power enable a smooth temperature transition, reducing temperature fluctuations and improving the cooking effect. With the distance between the magnetic field regulating component and the coil remaining constant, the magnetic field regulating component allows for adjustment of the magnetic field distribution of the coil, thereby achieving different heating powers in different areas.

[0057] In some embodiments, optionally, the magnetic field adjuster can move with the coil disk while the distance between the magnetic field adjuster and the coil disk remains constant and the coil disk moves.

[0058] In this embodiment, when the distance between the magnetic field adjusting component and the coil disk remains constant and the coil disk can move, the distance between the magnetic field adjusting component and the coil disk remains constant when the magnetic field adjusting component can move with the coil disk. However, the setting of the magnetic field adjusting component can realize the adjustment of the magnetic field distribution of the coil disk, thereby realizing different heating power in different areas.

[0059] In this embodiment, the magnetic field regulating component can be a magnetically conductive component. When the magnetically conductive component is placed within a magnetic field, it interacts with the magnetic field, thereby changing the direction of the magnetic field lines and adjusting the magnetic field of the coil, thus regulating the coupling of the heating container. Alternatively, the magnetic field regulating component can be a non-magnetically conductive metal component. This non-magnetically conductive metal component can adjust the magnetic field of the coil, and it cannot be heated by the magnetic field, thereby reducing heat generation within the casing.

[0060] In some embodiments, the coil may optionally include multiple sub-coil coils, which are joined together to form a disc-shaped coil coil, and at least one sub-coil coil is movable relative to the heating container to adjust the heating power of the cooking appliance.

[0061] In this embodiment, the coil includes multiple sub-coil coils, which are assembled into a disc-shaped coil. At least one sub-coil coil is movable relative to the heating container, allowing the distance between the at least one sub-coil coil and the heating container to be adjusted, thereby regulating the heating power of the cooking appliance. Furthermore, the ability of at least one sub-coil coil to move relative to the heating container increases the variety of coil coil configurations, thus expanding the adjustable range of heating power. Simultaneously, different sub-coil coils correspond to different areas of the heating container, enabling the adjustment of heating power in different areas of the heating container as different sub-coil coils move, thereby promoting the tumbling of food within the heating container and improving heating uniformity.

[0062] In some embodiments, the cooking appliance may optionally include any one of an induction cooker, a rice cooker, or an electric pressure cooker.

[0063] In this embodiment, the cooking appliance can be any one of an induction cooker, a rice cooker, or an electric pressure cooker.

[0064] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0065] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0066] Figure 1 One of the structural schematic diagrams of a cooking appliance according to an embodiment of the present invention is shown;

[0067] Figure 2 A second schematic diagram of the structure of a cooking appliance according to an embodiment of the present invention is shown;

[0068] Figure 3 The third schematic diagram shows the structure of a cooking appliance according to an embodiment of the present invention;

[0069] Figure 4 The fourth schematic diagram shows the structure of a cooking appliance according to an embodiment of the present invention;

[0070] Figure 5 Fifth schematic diagram of the structure of a cooking appliance according to an embodiment of the present invention is shown;

[0071] Figure 6 One of the structural schematic diagrams of the drive assembly and coil disk according to an embodiment of the present invention is shown;

[0072] Figure 7 A second schematic diagram of the drive assembly and coil disk according to an embodiment of the present invention is shown;

[0073] Figure 8 The third schematic diagram shows the structure of the drive assembly and coil disk according to an embodiment of the present invention;

[0074] Figure 9 A schematic diagram of the structure of a cooking appliance according to an embodiment of the present invention is shown in Figure 6.

[0075] Figure 10 The seventh schematic diagram shows the structure of a cooking appliance according to an embodiment of the present invention;

[0076] Figure 11 The eighth schematic diagram shows the structure of a cooking appliance according to an embodiment of the present invention.

[0077] in, Figures 1 to 11 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0078] 1. Housing; 2. Heating container; 3. Coil disc; 30. Second mating part; 300. Second concave-convex structure; 3002. Second protrusion; 3004. Second concave part; 4. Drive assembly; 40. Drive part; 400. Drive motor; 402. Hydraulic pump; 404. Pneumatic pump; 406. First magnetic component; 41. Moving part; 410. First gear; 412. Second gear; 414. Hydraulic cylinder; 4140. First support rod; 416. Sealing cavity; 4160. Second support rod; 418. Second magnetic component; 42. First mating part; 420. First concave-convex structure; 4200. First protrusion; 4202. First concave part; 44. Groove; 46. Magnetic shielding structure; 460. Magnetic shielding cover; 48. Gear cover; 5. Rolling component; 6. Elastic component; 7. Support base; 70. Enclosure; 72. Opening; 8. Magnetic field adjusting component; 9. Bracket. Detailed Implementation

[0079] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0080] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0081] The following reference Figures 1 to 11 A cooking appliance is described according to some embodiments of the present invention.

[0082] like Figure 1 , Figure 2 and Figure 3 As shown, according to an embodiment of the present invention, a cooking appliance is provided, including a housing 1; a heating container 2 disposed in the housing 1; and a coil 3 disposed inside the housing 1, the coil 3 being located outside the heating container 2, a coil being wound on the coil 3, the coil on the coil 3 generating a magnetic field when energized to heat the heating container 2, wherein the distance between the coil 3 and the heating container 2 can be varied to adjust the heating power of the cooking appliance.

[0083] The cooking appliance provided by this invention includes a housing 1, a heating container 2, and a coil 3. Both the heating container 2 and the coil 3 are disposed on the housing 1. A coil is wound on the coil 3. When the coil on the coil 3 is energized, it generates a magnetic field. The heating container 2 heats up under the influence of this magnetic field, thus cooking the food inside. The distance between the coil 3 and the heating container 2 can be varied, thereby changing the intensity of the induced magnetic field in the heating container 2. This allows for adjustment of the coupling between the coil 3 and the heating container 2, enabling variations in the heating power of the cooking appliance during cooking. This variation in heating power allows for a smooth temperature transition during cooking, reducing temperature fluctuations and improving the cooking effect.

[0084] It is understood that the change in distance between the coil 3 and the heating container 2 includes: at least a portion of the coil 3 being able to move away from or closer to the heating container 2, and / or the heating container 2 being able to move away from or closer to the coil 3, thereby increasing or decreasing the distance between the heating container 2 and the coil 3.

[0085] In addition, the distance between the coil 3 and the heating container 2 gradually changes, which allows the heating power of the cooking appliance to gradually change. That is, the heating power of the cooking appliance can be infinitely adjusted, increasing the power adjustment range of the heating container 2. As a result, during the cooking process, the heating power of the cooking appliance can be smoothly adjusted, reducing temperature fluctuations and improving the cooking effect of the food.

[0086] Optionally, the heating container 2 includes a magnetic pot or a pot body with a magnetic layer.

[0087] It is understandable that different heating powers are required for each cooking stage. By adjusting the distance between the coil 3 and the heating container 2, the temperature can be smoothly transitioned between each cooking stage during continuous heating, thereby improving the cooking effect of the ingredients.

[0088] Optionally, the coil 3 and the heating container 2 can be stopped at any position within their range of motion, thereby achieving stepless adjustment of the heating power.

[0089] The cooking appliance provided by the present invention may also have the following additional technical features:

[0090] In some embodiments, the coil 3 may be movable relative to the heating container 2 to change the distance between the coil 3 and the heating container 2; and / or the heating container 2 may be movable relative to the coil 3 to change the distance between the coil 3 and the heating container 2.

[0091] In this embodiment, during the adjustment of the distance between the coil disk 3 and the heating container 2, the coil disk 3 may move relative to the heating container 2 to reduce driving energy consumption; the heating container 2 may move relative to the coil disk 3 to adjust the distance; or both the coil disk 3 and the heating container 2 may move to adjust the distance between them.

[0092] In some embodiments, the coil 3 is optionally located at the bottom of the heating container 2 and / or the coil 3 is located on the side of the heating container 2.

[0093] In this embodiment, the coil 3 can be set at the bottom of the heating container 2 to reduce the space occupied in the height direction of the cooking utensil; the coil 3 can also be set on the side of the heating container 2 to increase the area surrounding the heating container 2 and improve the uniformity of heating of the food inside the heating container 2.

[0094] In some embodiments, optionally, when the coil 3 is located on the side of the heating container 2: the coil 3 has a closed annular structure around the periphery of the heating container 2, or has an annular structure with an opening; and / or in a cross section perpendicular to the height direction of the cooking appliance, the position corresponding to the maximum area of ​​the heating container 2 is located within the area surrounded by the coil 3; and / or when the coil 3 is located at the bottom of the heating container 2, the projection of the heating container 2 along the height direction of the cooking appliance covers the coil 3; and / or the coil 3 located on the side of the heating container 2 and the coil 3 located at the bottom of the heating container 2 are an integral structure or a separate structure.

[0095] In this embodiment, when the coil 3 is disposed on the side of the heating container 2, the coil 3 can be a closed annular structure around its circumference to improve heating efficiency; or the coil 3 can be constructed as an annular structure with an opening around its circumference, so that different areas within the heating container 2 can form different heating temperatures, thereby improving the fluidity of the food within the heating container 2 during the boiling stage and enhancing the uniformity of heating. When the coil 3 is located at the bottom of the heating container 2, the heating container 2 covers the bottom of the coil 3 along the height direction of the cooking appliance, thereby improving the utilization rate of the magnetic field generated by the coil 3. Optionally, if the amount of food corresponding to the position with the largest cross-sectional area of ​​the heating container 2 is relatively large, and the coil 3 surrounds the periphery of the heating container 2, the coil 3 envelops the position with the largest cross-sectional area of ​​the heating container 2, ensuring that the food at the position with the largest cross-sectional area of ​​the heating container 2 receives sufficient heat, improving the uniformity of heating and thus enhancing the cooking effect. Optionally, the coil 3 surrounding the side of the heating container 2 and the coil 3 located at the bottom of the heating container 2 can be an integral structure to improve assembly efficiency; or the coil 3 surrounding the side of the heating container 2 and the coil 3 located at the bottom of the heating container 2 can be separate structures to facilitate driving the coil 3 surrounding the side of the heating container 2 and the coil 3 located at the bottom of the heating container 2 separately, thereby achieving adjustment of different heating powers and increasing the adjustable range of heating power.

[0096] In some embodiments, the heating container 2 may be raised or lowered along the height of the cooking appliance to bring the heating container 2 closer to or away from the coil 3; and / or the coil 3 may be raised or lowered along the height of the cooking appliance to bring at least a portion of the coil 3 closer to or away from the coil 3.

[0097] In this embodiment, when the heating container 2 moves up or down along the height of the cooking appliance, it can move away from or closer to the coil 3, changing the distance between the coil 3 and the heating container 2. This alters the magnetic field coupling of the heating container 2, thereby adjusting the heating power. Similarly, when the coil 3 moves up or down along the height of the cooking appliance, it can move away from or closer to the heating container 2, changing the distance between them. This alters the magnetic field coupling of the heating container 2, thereby adjusting the heating power. This arrangement fully utilizes the vertical space of the cooking appliance, reducing the horizontal space occupied, thus saving horizontal space in the kitchen.

[0098] Optionally, when the coil 3 surrounds the side of the heating container 2, at least a portion of the side wall of the coil 3 is inclined relative to the height direction, or at least a portion of the side wall of the heating container 2 is inclined relative to the height direction of the cooking appliance, so that the coil 3 and the heating container 2 have a displacement difference in the horizontal direction when they move.

[0099] Optionally, when both the heating container 2 and the coil 3 can be raised and lowered, the different raising and lowering displacements of the heating container 2 and the coil 3 will cause a change in the distance between the heating container 2 and the coil 3, thereby achieving the adjustment of the heating power.

[0100] like Figure 2 , Figure 3 , Figure 5 , Figure 10 and Figure 11 As shown, in some embodiments, the cooking appliance may optionally include: a support base 7 disposed on the housing 1, and a heating container 2 disposed on the support base 7.

[0101] In this embodiment, the support base 7 can support the heating container 2 to ensure the reliability of the heating container 2 within the housing 1.

[0102] Optionally, the coil 3 is located on the side of the support 7 away from the heating container 2; or the coil 3 is located inside the support 7; or the bottom of the support 7 is provided with an opening, and the coil 3 is configured to move up and down between the outside and inside of the support 7.

[0103] In some embodiments, the coil 3 is optionally located on the side of the support 7 away from the heating container 2; wherein the coil 3 is located at the bottom of the support 7, and in a projection along a direction perpendicular to the height of the cooking appliance, the coil 3 at least partially overlaps with the bottom of the support 7; and / or the coil 3 is located on the side of the support 7.

[0104] In this embodiment, the coil 3 is located at the bottom of the support base 7 and at least partially overlaps with the bottom of the support base 7 to reduce the space occupied by the cooking appliance in the horizontal direction. Optionally, the coil 3 can also be arranged on the side of the support base 7 to reduce the space occupied by the cooking appliance in the vertical direction.

[0105] like Figure 4 As shown, optionally, when the coil 3 is located at the bottom of the support base 7, the bottom of the support base 7 is provided with a surrounding plate 70, and the coil 3 is located within the space enclosed by the surrounding plate 70 and can be raised and lowered along the height direction of the cooking appliance. Optionally, the surrounding plate 70 is provided with a first limiting part, and the coil 3 is provided with a second limiting part. The first limiting part and the second limiting part cooperate to limit the coil 3 to prevent it from rotating, and allow the coil 3 to be raised and lowered. Of course, the surrounding plate 70 may not be provided at the bottom of the support base 7, and the coil 3 can also be limited by the housing 1.

[0106] like Figure 2 , Figure 3 , Figure 10 and Figure 11As shown, in some embodiments, the cooking appliance may optionally include: a drive assembly 4 for driving the coil 3 to move so that the coil 3 approaches or moves away from the heating container 2; and / or for driving at least one of the heating container 2 and the support 7 to move so that the heating container 2 approaches or moves away from the coil 3.

[0107] In this embodiment, the drive assembly 4 drives at least one of the coil 3, the support base 7, and the heating container 2 to move, thereby achieving automatic adjustment of the heating power. Since the heating container 2 is supported by the support base 7, the drive assembly 4 can drive the support base 7 to move, thus adjusting the distance between the heating container 2 and the coil 3. Alternatively, the drive assembly 4 can directly drive the heating container 2 to reduce the power required for driving and save energy in the cooking appliance.

[0108] Optionally, the movement of the coil 3 and the heating container 2 can be achieved by the same drive component 4 or by different drive components 4.

[0109] like Figure 2 As shown, in some embodiments, optionally, the drive assembly 4 includes: a drive part 40; a motion part 41 connected to the drive part 40, the motion part 41 being connected to the coil disk 3, the drive part 40 driving the motion part 41 to move so that at least a portion of the coil disk 3 can move away from or near the heating container 2, and / or the motion part 41 being connected to at least one of the heating container 2 and the support base 7, the drive part 40 driving the motion part 41 to move so that the heating container 2 moves away from or near the coil disk 3.

[0110] In this embodiment, the driving component 4 includes a driving part 40 and a moving part 41. The driving part 40 drives the moving part 41 to move. The moving part 41 is connected to the coil 3 and thus drives the coil 3 to move relative to the heating container 2, so that the magnetic field generated by the coil on the coil 3 moves relative to the heating container 2, thereby changing the intensity of the induced magnetic field of the heating container 2. During the cooking process of the cooking appliance, the coupling between the coil 3 and the heating container 2 is adjusted, thereby changing the heating power of the cooking appliance during the cooking process; and / or the moving part 41 is connected to at least one of the heating container 2 and the support base 7 and thus drives the heating container 2 to move relative to the coil 3, thereby changing the intensity of the induced magnetic field of the heating container 2. During the cooking process of the cooking appliance, the coupling between the coil 3 and the heating container 2 is adjusted, thereby changing the heating power of the cooking appliance during the cooking process.

[0111] It should be noted that the connection between the moving part 41 and the coil disk 3 includes contact transmission between the two or connection through a connecting structure; the connection between the moving part 41 and the heating container 2 includes contact transmission between the two or connection through a connecting structure.

[0112] like Figure 2 and Figure 4 As shown, in some embodiments, optionally, the moving part 41 is provided with a first mating part 42, and at least one of the coil 3, the heating container 2 and the support 7 is connected to the first mating part 42 through a second mating part 30; wherein, the driving part 40 can drive the moving part 41 to rotate, and the first mating part 42 rotates relative to the second mating part 30, so as to raise and lower the coil 3 and / or the heating container 2.

[0113] In this embodiment, the moving part 41 is provided with a first mating part 42. At least one of the coil 3, the heating container 2, and the support base 7 is connected to the first mating part 42 through a second mating part 30. When the driving part 40 drives the moving part 41 to rotate, the first mating part 42 rotates with the moving part 41. Since the first mating part 42 and the second mating part 30 are connected, the coil 3 and / or the heating container 2 are raised and lowered through the cooperation of the first mating part 42 and the second mating part 30, so that the distance between the coil 3 and the heating container 2 changes. During the cooking process of the cooking appliance, the coupling between the coil 3 and the heating container 2 is adjusted, thereby adjusting the heating power of the cooking appliance.

[0114] Optionally, the lifting of the coil 3 or the heating container 2 can be a linear movement along the vertical direction, or a swaying lifting, a spiral lifting, or a lifting at a certain angle to the vertical direction.

[0115] Optionally, the vertical direction is the direction of the rotation axis of the moving part 41.

[0116] Optionally, at least one of the first mating part 42 and the second mating part 30 includes a sloped structure or a concave-convex structure.

[0117] In some embodiments, optionally, one of the first mating part 42 and the second mating part 30 includes an inclined surface structure, which is inclined relative to the axis of rotation of the moving part 41, and the other of the first mating part 42 and the second mating part 30 includes a slider structure, which can slide along the inclined surface structure as the moving part 41 rotates, thereby driving the coil disk 3 to rise and fall.

[0118] like Figure 11 As shown, in some embodiments, optionally, when the heating container 2 is connected to the first mating part 42 through the second mating part 30, the bottom of the support base 7 is provided with an opening 72, and the second mating part 30 and the first mating part 42 are connected through the opening 72.

[0119] In this embodiment, when the heating container 2 is connected to the first mating part 42 through the second mating part 30, the second mating part 30 is connected to the first mating part 42 through the opening 72 at the bottom of the support base 7, thereby realizing the transmission of power.

[0120] Optionally, the first mating part 42 is located outside the support base 7, and a part of the second mating part 30 passes through the opening 72, so that a part of the second mating part 30 contacts the heating container 2 and the other part contacts the first mating part 42 to realize the transmission of power. Alternatively, the second mating part 30 can be located inside the support base 7, and a part of the first mating part 42 extends into the support base 7 through the opening 72 to contact the second mating part 30 to realize the transmission of power.

[0121] like Figure 11 As shown, in some embodiments, optionally, a portion of the second mating part 30 extends into the support base 7 through the opening 72 and is supported on the bottom of the heating container 2, while another portion of the second mating part 30 is located on the outside of the support base 7 and contacts the first mating part 42.

[0122] In this embodiment, a portion of the second mating part 30 extends into the support base 7 through the opening 72 to support the bottom of the heating container 2. The other portion of the second mating part 30 is located on the outside of the support base 7 and contacts the first mating part 42 for transmission, enabling the heating container 2 to rise and fall relative to the coil 3. This arrangement reduces the space occupied inside the support base 7, thereby reducing the material usage of the support base 7 and lowering manufacturing costs.

[0123] like Figure 4 As shown, in some embodiments, optionally, one of the first mating part 42 and the second mating part 30 includes a first concave-convex structure 420, and the other of the first mating part 42 and the second mating part 30 mates with the first concave-convex structure 420 to cause the coil 3 and / or the heating container 2 to move up and down between the first position and the second position.

[0124] In this embodiment, one of the first mating part 42 and the second mating part 30 includes a first concave-convex structure 420. During the rotation of the moving part 41, the other of the first mating part 42 and the second mating part 30 engages with the first concave-convex structure 420, causing the coil 3 and / or the heating container 2 to rise and fall between the first position and the second position.

[0125] In some embodiments, the distance between the first position and the second position may be greater than 0 mm and less than or equal to 100 mm.

[0126] In this embodiment, the lifting range of the coil 3 is set to be greater than 0 mm and less than or equal to 100 mm, which can reduce the impact of the lifting of the coil 3 on the overall height of the cooking appliance, and also ensure the adjustable range of heating power.

[0127] In practical applications, the distance between the first position and the second position is any value among 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, and 100mm, or any value between any two values.

[0128] Optionally, the drive assembly 4 is used to drive the coil disk 3 to reciprocate between the first position and the second position, or to drive the coil disk 3 to move to any position between the first position and the second position.

[0129] like Figure 4 As shown, in some embodiments, optionally, the other of the first mating part 42 and the second mating part 30 includes a second convex-concave structure 300, which mates with the first convex-concave structure 420 to cause the coil 3 and / or the heating container 2 to move up and down between the first position and the second position.

[0130] In this embodiment, the other of the first mating part 42 and the second mating part 30 includes a second concave-convex structure 300. Through the cooperation of the first concave-convex structure 420 and the second concave-convex structure 300, the movement of the coil 3 or the heating container 2 can be made more stable.

[0131] like Figure 9 As shown, in some embodiments, optionally, the first concave-convex structure 420 includes a plurality of first protrusions 4200, the plurality of first protrusions 4200 being distributed along the rotation direction of the moving part 41, and a first recess 4202 being provided between adjacent first protrusions 4200, the plurality of first protrusions 4200 and the plurality of first recesses 4202 being sequentially connected or spaced apart along the rotation direction of the moving part 41; and / or the second concave-convex structure 300 includes a plurality of second protrusions 3002, the plurality of second protrusions 3002 being distributed along the rotation direction of the moving part 41, and a second recess 3004 being provided between adjacent second protrusions 3002, the plurality of second protrusions 3002 and the plurality of second recesses 3004 being sequentially connected or spaced apart along the rotation direction of the moving part 41.

[0132] In this embodiment, the first concave-convex structure 420 includes multiple first protrusions 4200 and first concave portions 4202, and the second concave-convex structure 300 includes multiple second protrusions 3002 and second concave portions 3004. The first protrusions 4200 and first concave portions 4202 are sequentially connected along the rotation direction of the moving part 41, thereby making the movement of the coil 3 smoother during the rotation of the moving part 41, and also enabling the coil 3 or heating container 2 to continuously rise and fall with the continuous rotation of the moving part 41, thereby causing the induced magnetic field of the heating container 2 to continuously change, increasing the adjustable range of heating power during the cooking process of the cooking appliance. Alternatively, the first protrusions 4200 and first concave portions 4202 are spaced apart along the rotation direction, so that the rising and falling of the coil 3 or heating container 2 is not continuous, realizing intermittent rising and falling of the coil 3. Correspondingly, the second protrusions 3002 and second concave portions 3004 can also be sequentially connected or intermittently arranged.

[0133] Optionally, in the first position, the first protrusion 4200 is located on top of the second protrusion 3002; in the second position, the first protrusion 4200 is located at the bottom of the second recess 3004.

[0134] like Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, optionally, the driving part 40 includes a driving motor 400, the moving part 41 includes a first gear 410, and a first engaging part 42 is disposed on one side of the first gear 410. The driving part 40 is disposed in the middle of the first gear 410 to drive the first gear 410 to rotate. Alternatively, the moving part 41 may also include a second gear 412, which is connected to the driving motor 400, and the first gear 410 meshes with the second gear 412.

[0135] In this embodiment, the drive unit 40 includes a drive motor 400, and the motion unit 41 includes a first gear 410. The drive motor 400 is connected to the middle of the first gear 410, so that the drive motor 400 directly drives the first gear 410 to rotate, reducing the number of transmission components. Alternatively, the motion unit 41 also includes a second gear 412. The drive motor 400 is connected to the second gear 412, and the first gear 410 meshes with the second gear 412. The drive motor 400 drives the first gear 410 to rotate through the second gear 412. In this way, the drive motor 400 can be placed around the first gear 410, reducing the overall height of the cooking appliance. The cooking appliance proposed in this application realizes the lifting and lowering of the coil 3 or heating container 2 through the rotation of the drive motor 400 and the gear structure, making the lifting and lowering of the coil 3 or heating container 2 more stable and reliable. At the same time, converting rotation into lifting motion can also reduce the space occupied by the drive component 4 in the height direction.

[0136] like Figure 2and Figure 5 As shown, in some embodiments, the cooking appliance may optionally include: a rolling element 5 disposed in at least one of the first mating portion 42 and the second mating portion 30, the first mating portion 42 and the second mating portion 30 being in contact through the rolling element 5; and / or at least one elastic element 6, the elastic element 6 being in a compressed state for pushing the coil 3 or the heating container 2 to fit against the moving portion 41.

[0137] In this embodiment, the cooking appliance further includes a rolling element 5. The first mating part 42 and the second mating part 30 contact each other through the rolling element 5, so that the sliding friction between the first mating part 42 and the second mating part 30 is converted into rolling friction, thereby reducing the frictional resistance between the first mating part 42 and the second mating part 30. Optionally, the elastic element 6 pushes the coil 3 or the heating container 2, so that the coil 3 or the heating container 2 fits against the moving part 41, thereby ensuring the reliability of the contact between the coil 3 or the heating container 2 and the moving part 41, and ensuring the reliability of the movement of the coil 3.

[0138] like Figure 9 As shown, in some embodiments, optionally, one of the first mating part 42 and the second mating part 30 is provided with a groove 44, a portion of the rolling element 5 is embedded in the groove 44 and can roll in the groove 44, and another portion protrudes from the groove 44 and contacts the other of the first mating part 42 and the second mating part 30.

[0139] In this embodiment, one of the first mating part 42 and the second mating part 30 is provided with a groove 44, a part of the rolling element 5 is disposed in the groove 44, and another part of the rolling element 5 protrudes out of the groove 44 and contacts the other of the first mating part 42 and the second mating part 30, thereby improving the connection strength between the rolling element 5 and the first mating part 42 or the second mating part 30 and preventing the rolling element 5 from falling off.

[0140] In some embodiments, the rolling element 5 may optionally include any one of a metal element, a silicone element, or a rubber element.

[0141] In this embodiment, the rolling element 5 can be a metal part to increase its strength, reduce its wear, and extend the lifespan of the cooking appliance. The rolling element 5 can also be a silicone or rubber part, which has wear resistance and can further increase its lifespan.

[0142] In some embodiments, optionally, the drive unit 40 includes a hydraulic pump 402, and the motion unit 41 includes a hydraulic cylinder 414. The hydraulic cylinder 414 is provided with a first support rod 4140, and the coil 3 or heating container 2 is disposed on the first support rod 4140. The hydraulic pump 402 drives the first support rod 4140 to rise and fall, thereby driving the coil 3 or heating container 2 to rise and fall; and / or the drive unit 40 includes a pneumatic pump 404, and the motion unit 41 includes a sealed cavity 416. A second support rod 4160 is provided on one side of the sealed cavity 416, and the coil 3 or heating container 2 is disposed on the second support rod 4160. 60. The pneumatic pump 404 drives the second support rod 4160 to rise and fall, thereby driving the coil 3 or the heating container 2 to rise and fall; and / or the driving part 40 includes a first magnetic element 406, and the moving part 41 includes a second magnetic element 418. At least one of the first magnetic element 406 and the second magnetic element 418 is an electromagnet. The second magnetic element 418 is connected to the coil 3 or the heating container 2. When the electromagnet is energized, the first magnetic element 406 and the second magnetic element 418 attract or repel each other, causing the second magnetic element 418 to move to push the coil 3 or the heating container 2 to rise and fall.

[0143] In this embodiment, the drive unit 40 can also directly drive the motion unit 41 to rise and fall, thereby raising or lowering the coil 3 or the heating container 2, for example, Figure 6 As shown, the drive unit 40 includes a hydraulic pump 402, and the motion unit 41 includes a hydraulic cylinder 414. The hydraulic cylinder 414 is provided with a first support rod 4140. When the hydraulic pump 402 operates, it drives the hydraulic cylinder 414 to extend and retract, thereby causing the first support rod 4140 to drive the coil 3 or the heating container 2 to rise and fall, making the distance between the coil 3 and the heating container 2 adjustable, and thus making the heating power adjustable. Or as... Figure 7 As shown, the drive unit 40 includes a pneumatic pump 404 and a sealed cavity 416. The pneumatic pump 404 drives the sealed cavity 416 to expand or contract, thereby causing the second support rod 4160 to drive the coil 3 to rise and fall; or as... Figure 8 As shown, the driving unit 40 includes a first magnetic element 406, and the moving unit 41 includes a second magnetic element 418. At least one of the first magnetic element 406 and the second magnetic element 418 is an electromagnet. When the electromagnet is energized, the first magnetic element 406 and the second magnetic element 418 attract or repel each other, thereby causing the second magnetic element 418 to move. That is, the second magnetic element 418 drives the coil disk 3 or the heating container 2 to rise and fall, thereby adjusting the distance between the coil disk 3 and the heating container 2, and thus adjusting the heating power.

[0144] like Figure 4 and Figure 5 As shown, in some embodiments, the drive assembly 4 may optionally include a magnetic shielding structure 46, which is at least partially located between the drive unit 40 and the coil disk 3, for isolating at least a portion of the drive unit 40 from the magnetic field of the coil disk 3.

[0145] In this embodiment, since the drive unit 40 includes a metal part, in order to prevent the drive unit 40 from being heated by the magnetic field, a magnetic shielding structure 46 is provided between the drive unit 40 and the coil disk 3 to ensure the normal movement of the drive unit 40.

[0146] In some embodiments, the magnetic shielding structure 46 may optionally include a magnetic shielding cover 460, which surrounds at least a portion of the drive portion 40 circumferentially; or the magnetic shielding structure 46 may include a magnetic shielding ring; or the magnetic shielding structure 46 may include a magnetic shielding wire; or the magnetic shielding structure 46 may be provided with a magnetic shielding coating; and / or the magnetic shielding structure 46 may be mounted on the drive portion 40.

[0147] In this embodiment, such as Figure 4 As shown, when the magnetic shielding structure 46 includes a magnetic shielding cover 460, the magnetic shielding cover 460 can fully surround the drive portion 40 in the circumferential direction, or partially surround the drive portion 40; of course, the magnetic shielding structure 46 can also be a magnetic shielding ring, a magnetic shielding wire, or a magnetic shielding coating. Optionally, the magnetic shielding structure 46 is installed on the drive portion 40, so that the magnetic shielding structure 46 and the drive portion 40 are integrated, improving assembly efficiency.

[0148] Optionally, the magnetic shield 460 is in the form of a plate.

[0149] Optionally, the magnetic shielding ring or magnetic shielding wire wraps around at least a portion of the drive portion 40 in the circumferential direction (e.g., the circumferential direction of the shaft of the drive portion 40). That is, the magnetic shielding ring and magnetic shielding wire can be circumferentially closed or have an opening in the circumferential direction.

[0150] In some embodiments, optionally, a coil is wound on the support 7, which can generate a magnetic field to heat the heating container 2 when the coil on the support 7 is energized.

[0151] In this embodiment, a coil is wound on the support base 7, and the coil on the support base 7 surrounds the heating container 2. When the coil on the support base 7 is energized, the heating container 2 can be heated. That is, both the coil on the coil disk 3 and the coil on the support base 7 can heat the heating container 2. Optionally, the coil on the coil disk 3 and the coil on the support base 7 can heat the heating container 2 simultaneously, or the coil on the coil disk 3 and the coil on the support base 7 can heat the heating container 2 separately.

[0152] In some embodiments, the coil 3 may optionally be oscillating relative to the heating container 2; and / or the coil 3 may be moving in a direction perpendicular to the height of the cooking appliance; and / or the heating container 2 may be oscillating relative to the heating container 2; and / or the heating container 2 may be moving relative to the coil 3 in a direction perpendicular to the height of the cooking appliance.

[0153] In this embodiment, the distance between the coil 3 and the heating container 2 can be adjusted by one of them swinging relative to the other, or by one of them translating relative to the other in a direction perpendicular to the height direction, as long as the distance between the coil 3 and the heating container 2 can be adjusted.

[0154] Optionally, the coil 3 can oscillate relative to the heating container 2, for example, oscillating about an axis perpendicular to the height direction or twisting about a fulcrum. The heating container 2 oscillates relative to the heating container 2, for example, oscillating about an axis perpendicular to the height direction or twisting about a fulcrum.

[0155] In some embodiments, the distance between the coil 3 and the heating container 2 can be gradually varied so that the heating power of the cooking appliance can be gradually adjusted.

[0156] In this embodiment, the distance between the coil 3 and the heating container 2 gradually changes, thus enabling the heating power of the cooking appliance to gradually change. In other words, the heating power of the cooking appliance can be infinitely adjusted, increasing the power adjustment range of the heating container 2. Consequently, during the cooking process, the heating power of the cooking appliance is smoothly adjusted, reducing temperature fluctuations and improving the cooking effect of the ingredients.

[0157] like Figure 10 As shown, in some embodiments, the cooking appliance may optionally include a magnetic field adjuster 8 disposed within the housing 1, wherein the magnetic field adjuster 8 is movable relative to the coil 3, or the coil 3 is movable relative to the magnetic field adjuster 8, so as to change the magnetic field of the coil of the coil 3; or the distance between the magnetic field adjuster 8 and the coil 3 remains constant.

[0158] In this embodiment, the magnetic field regulating component 8 is disposed within the housing 1, and the magnetic field regulating component 8 can move relative to the coil 3, or the coil 3 can move relative to the magnetic field regulating component 8. This causes a spatial positional change between the magnetic field regulating component 8 and the coil 3, thereby affecting the magnetic field generated by the coil. This results in changes in the direction and density of the magnetic field lines, leading to changes in the magnetic flux on the heating container 2, and consequently, changes in the intensity of electromagnetic induction acting on the heating container 2. This achieves adjustment of the heating power of the cooking appliance. Furthermore, during the movement of at least one of the magnetic field regulating component 8 and the coil 3, the position of either the magnetic field regulating component 8 or the coil 3 changes gradually, allowing for a gradual change in the intensity of electromagnetic induction acting on the heating container 2. This achieves stepless adjustment of the heating power of the cooking appliance. During cooking, the change in heating power enables a smooth temperature transition, reducing temperature fluctuations and improving the cooking effect. With the distance between the magnetic field regulating component 8 and the coil 3 remaining constant, the magnetic field regulating component 8 allows for adjustment of the magnetic field distribution of the coil 3, thereby achieving different heating powers in different areas.

[0159] Optionally, when the magnetic field regulating member 8 can move relative to the coil disk 3, the magnetic field regulating member 8 can move with the heating container 2, or the driving component 4 can drive the magnetic field regulating member 8 to move through a separate connection structure, or the magnetic field regulating member 8 can move with the moving part 41 of the driving component 4; when the coil disk 3 moves relative to the magnetic field regulating member 8, the magnetic field regulating member 8 can move or remain stationary.

[0160] In some embodiments, optionally, when the distance between the magnetic field adjuster 8 and the coil disk 3 remains constant and the coil disk 3 moves, the magnetic field adjuster 8 can move with the coil disk 3.

[0161] In this embodiment, when the distance between the magnetic field adjusting member 8 and the coil disk 3 remains constant and the coil disk 3 can move, the distance between the magnetic field adjusting member 8 and the coil disk 3 remains constant when the magnetic field adjusting member 8 can move with the coil disk 3. However, the setting of the magnetic field adjusting member 8 can realize the adjustment of the magnetic field distribution of the coil disk 3, thereby realizing different heating power in different areas.

[0162] Optionally, the cooking appliance also includes: a support 9, a magnetic field adjustment element 8 and a coil 3, all of which are mounted on the support 9, so that the magnetic field adjustment element 8 can move together with the coil 3, or the distance between the heating container 2 and the coil 3 and the magnetic field adjustment element 8 can change when the heating container 2 moves.

[0163] Optionally, the magnetic field regulating element 8 includes a magnetically conductive element or a non-magnetically conductive metal element.

[0164] In this embodiment, the magnetic field regulating component 8 can be a magnetically conductive component. When the magnetically conductive component is placed within a magnetic field, it interacts with the magnetic field, thereby changing the direction of the magnetic field lines and adjusting the magnetic field of the coil disk 3, thus adjusting the coupling of the heating container 2. Alternatively, the magnetic field regulating component 8 can be a non-magnetically conductive metal component. A non-magnetically conductive metal component can adjust the magnetic field of the coil disk 3, and it cannot be heated by the magnetic field, thereby reducing heat generation within the housing 1.

[0165] In some embodiments, the coil 3 may optionally include multiple sub-coil coils, which are spliced ​​together to form a disc-shaped coil 3, and at least one sub-coil coil can move relative to the heating container 2 to adjust the heating power of the cooking appliance.

[0166] In this embodiment, the coil 3 includes multiple sub-coil coils, which are assembled into a disc-shaped coil 3. At least one sub-coil coil is movable relative to the heating container 2, allowing the distance between the at least one sub-coil coil and the heating container 2 to be adjusted, thereby regulating the heating power of the cooking appliance. Furthermore, the ability of at least one sub-coil coil to move relative to the heating container 2 increases the variety of combinations of the coil 3, thus expanding the adjustable range of heating power. Simultaneously, different sub-coil coils correspond to different areas of the heating container 2, enabling the adjustment of heating power in different areas of the heating container 2 as different sub-coil coils move, thereby promoting the tumbling of food within the heating container 2 and improving the uniformity of heating.

[0167] In some embodiments, the cooking appliance may optionally include any one of an induction cooker, a rice cooker, or an electric pressure cooker.

[0168] In this embodiment, the cooking appliance can be any one of an induction cooker, a rice cooker, or an electric pressure cooker.

[0169] Optionally, the cooking appliance also includes a control device connected to the drive unit 40 for controlling the drive unit 40 to drive the coil 3 and / or the heating container 2 to move, so as to adjust the heating power of the cooking appliance during the cooking process, thereby increasing the selectable range of heating power during the cooking process and enabling a smooth temperature transition between different cooking stages of the cooking appliance.

[0170] In some embodiments, the cooking appliance may optionally include: a first detection component disposed on the gear cover 48 or on the housing 1; and a second detection component disposed on the moving part 41, wherein the first detection component determines the position of the coil 3 based on the second detection component.

[0171] In this embodiment, to prevent abnormal lifting of the coil disk 3 or the heating container 2, it is necessary to detect, limit, and provide feedback on the vertical movement of the coil disk 3 or the heating container 2. Therefore, a first detection component is provided on the gear cover 48 or the housing 1, and a second detection component is provided on the moving part 41. During the process of the moving part 41 driving the coil disk 3 or the heating container 2 to move, the second detection component on the moving part 41 and the first detection component change position, thereby causing the detection parameters of the first detection component to change. The position of the coil disk 3 is determined according to the detection parameters, thereby realizing the detection of the position of the coil disk 3 and ensuring the normal operation of the mechanism.

[0172] In some embodiments, the first detection component may optionally include at least one of the following: a micro switch, a reed switch, and a grating; the second detection component may include a magnet.

[0173] In this embodiment, the first detection component can be a position detection structure such as a micro switch, a reed switch, and a grating, and the second detection component includes a magnet. During the rotation of the moving part 41, the magnet rotates with the moving part 41, thereby changing the magnetic field of the magnet at the location of the first detection component, so as to realize the position detection during the movement of the coil disk 3.

[0174] Optionally, a magnet is mounted on the first gear 410, and its circumferential position changes as the first gear 410 rotates; a reed switch is mounted on the gear cover 48, and its position remains fixed; when the first gear 410 rotates and drives the magnet to approach or move away from the reed switch, it causes the signal inside the reed switch to change on and off, and feeds back to the control board; by adjusting the relative position of the reed switch and the magnet, the position of the coil disk 3 is controlled.

[0175] According to one embodiment of this application, the drive motor 400 is a power mechanism that provides horizontal rotational power to the entire lifting system. A small gear (e.g., the second gear 412) is fixed to the drive motor 400 and rotates with it, meshing with a large gear (e.g., the first gear 410) to drive the large gear. The large gear rotates horizontally; to convert this horizontal rotation into vertical motion, a radially varying uneven structure (e.g., the first mating part 42) is designed in the middle of the large gear. The lifting plate (e.g., the coil plate 3) is designed with an uneven structure (e.g., the second mating part 30) that meshes with the large gear. When the large gear rotates, its uneven structure contacts the uneven structure on the lifting plate, achieving... The lifting plate reciprocates vertically; optionally, the concave-convex structure may not be a continuous contact fit, where any one part has a continuous or discontinuous concave-convex structure, and another part intermittently engages with it to achieve lifting. A metal coil is wound on the lifting plate to generate a changing magnetic field, thereby achieving electromagnetic heating of the inner pot of the metal utensil (e.g., heating container 2). Considering the lifespan of electronic components such as circuit boards and the product's lifespan, as well as the heating efficiency of the lifting plate, the movement distance of the lifting plate is preferably 0mm-100mm. Optionally, a rolling groove (e.g., groove 44) is designed between the lifting plate and the large gear to reduce friction between the moving part 41 and the coil plate 3 and to ensure reliable contact. Rollers (e.g., rolling element 5) are installed between the components to replace surface contact with point-line contact. The rollers can be made of metal or silicone, and their number is unlimited. The rollers can be located on either the moving part 41 or the coil plate 3, or both. Coils are wound on the lifting plate and the large coil plate (e.g., support base 7). When energized, they generate a magnetic field to heat the inner pot. The two can be heated independently or simultaneously. Optionally, the large coil plate may not be wound with coils, and only the lifting plate is wound to heat the inner pot. Optionally, a compression spring (e.g., elastic element 6) is installed between the large coil plate and the lifting plate to ensure reliable contact between the lifting plate and the large gear, thereby ensuring motion stability. In this system, the large gear has a large volume. The weight prevents it from moving in mid-air, and it is mounted on the gear cover 48. The two can be supported locally by line contact or other means. Optionally, the gear cover 48 is a non-essential component, and the large gear can also be directly fixed to other parts (such as the large coil 3, the rice cooker base, etc.). Since the drive motor 400 is made of metal, it is easily heated by electromagnetic in a magnetic field. Therefore, a magnetic shield 460 is designed on its outer ring to prevent the motor from overheating and affecting its performance. This solution uses gear-driven rotation to achieve lifting. The drive component 4 can also use hydraulic, pneumatic, electromagnet, or other drive methods to drive the lifting plate to lift and lower, thereby changing the distance between it and the inner pot. The drive components 4 can also be used in combination, and there can be several of them.

[0176] Optionally, the drive motor 400 is a metal component. To prevent it from overheating due to the changing magnetic field of the coil, a magnetic shield 460 is provided around its perimeter. The magnetic shield 460 can be a sheet-like fully enclosed or semi-enclosed structure, or a linear magnetic shielding ring / wire, or other components with a magnetic shielding coating.

[0177] Optionally, the magnetic shield 460 can be a separate component, or the drive motor 400 can have its own magnetic shield 460.

[0178] This application proposes a movable coil for current electromagnetic heating products. By moving the movable coil "away" and "closer", the range of induced magnetic field changes in the inner liner of the heating appliance (e.g., heating container 2) is made larger, which facilitates the adjustment of the electrical control performance.

[0179] In this invention, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installed," "connected," "linked," and "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "linked" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0180] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which 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.

[0181] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A cooking utensil, characterized in that, include: case; A heating container is disposed within the shell; A coil is disposed inside the housing, located outside the heating container. A coil is wound on the coil, and when energized, the coil generates a magnetic field that heats the heating container. The distance between the coil and the heating container can be varied to adjust the heating power of the cooking appliance.

2. The cooking utensil according to claim 1, characterized in that, The coil can move relative to the heating container to change the distance between the coil and the heating container; and / or The heating container can move relative to the coil to change the distance between the coil and the heating container.

3. The cooking utensil according to claim 2, characterized in that, The coil is located at the bottom of the heating container and / or the coil is located on the side of the heating container.

4. The cooking utensil according to claim 3, characterized in that, When the coil is located on the side of the heating container: the coil has a closed annular structure around the perimeter of the heating container, or an annular structure with an opening; and / or in a cross-section perpendicular to the height of the cooking appliance, the position corresponding to the maximum area of ​​the heating container is located within the area enclosed by the coil; and / or With the coil located at the bottom of the heating container, the projection of the heating container along the height direction of the cooking appliance covers the coil; and / or The coil located on the side of the heating container and the coil located at the bottom of the heating container are either an integral structure or separate structures.

5. The cooking utensil according to claim 2, characterized in that, The heating container is movable along the height of the cooking appliance to bring it closer to or away from the coil; and / or The coil can be raised and lowered along the height of the cooking appliance so that at least a portion of the coil is closer to or further away from the coil.

6. The cooking utensil according to claim 5, characterized in that, Also includes: A support base is provided on the housing, and the heating container is provided on the support base.

7. The cooking utensil according to claim 6, characterized in that, The coil is located on the side of the support base away from the heating container; Wherein, the coil is located at the bottom of the support base, and in the projection along the direction perpendicular to the height of the cooking appliance, the coil at least partially overlaps with the bottom of the support base; and / or the coil is located on the side of the support base.

8. The cooking utensil according to claim 7, characterized in that, Also includes: A drive assembly for driving the coil disk to move so that the coil disk moves closer to or away from the heating container; And / or for driving at least one of the heating container and the support to move so that the heating container moves closer to or away from the coil.

9. The cooking utensil according to claim 8, characterized in that, The driving component includes: Drive unit; A moving part is connected to the driving part and the moving part is connected to the coil disk. The driving part drives the moving part to move so that at least a portion of the coil disk can move away from or near the heating container. And / or the moving part is connected to at least one of the heating container and the support base, and the driving part drives the moving part to move so that the heating container moves away from or near the coil disk.

10. The cooking utensil according to claim 9, characterized in that, The moving part is provided with a first mating part, and at least one of the coil, the heating container and the support base is connected to the first mating part through a second mating part; The driving part is capable of driving the moving part to rotate, and the first mating part rotates relative to the second mating part to raise and lower the coil and / or the heating container.

11. The cooking utensil according to claim 10, characterized in that, When the heating container is connected to the first mating part through the second mating part, the bottom of the support base is provided with an opening, and the second mating part and the first mating part are connected through the opening.

12. The cooking utensil according to claim 11, characterized in that, A portion of the second mating part extends into the support base through the opening and is supported on the bottom of the heating container, while another portion of the second mating part is located on the outside of the support base and contacts the first mating part.

13. The cooking utensil according to claim 10, characterized in that, One of the first mating portion and the second mating portion includes a first concave-convex structure, and the other of the first mating portion and the second mating portion mates with the first concave-convex structure to cause the coil and / or the heating container to move up and down between a first position and a second position.

14. The cooking utensil according to claim 13, characterized in that, The other of the first mating part and the second mating part includes a second concave-convex structure, which mates with the second concave-convex structure to move the coil and / or the heating container between a first position and a second position.

15. The cooking utensil according to claim 14, characterized in that, The first concave-convex structure includes a plurality of first protrusions, which are distributed along the rotation direction of the moving part. A first concave portion is provided between adjacent first protrusions. The plurality of first protrusions and the plurality of first concave portions are sequentially connected or spaced apart along the rotation direction of the moving part; and / or The second concave-convex structure includes a plurality of second protrusions, which are distributed along the rotation direction of the moving part. A second concave portion is provided between adjacent second protrusions. The plurality of second protrusions and the plurality of second concave portions are sequentially connected or spaced apart along the rotation direction of the moving part.

16. The cooking utensil according to claim 10, characterized in that, The driving unit includes a drive motor, and the moving part includes a first gear, with the first mating part disposed on one side of the first gear. The driving part is located in the middle of the first gear to drive the first gear to rotate, or the moving part further includes a second gear, which is connected to the driving motor, and the first gear meshes with the second gear.

17. The cooking utensil according to claim 10, characterized in that, Also includes: A rolling element is disposed in at least one of the first mating portion and the second mating portion, and the first mating portion and the second mating portion are in contact through the rolling element; and / or At least one elastic element, which is in a compressed state, is used to push the coil or heating container to fit against the moving part.

18. The cooking utensil according to claim 9, characterized in that, The driving unit includes a hydraulic pump, the moving unit includes a hydraulic cylinder, the hydraulic cylinder is provided with a first support rod, the coil or the heating container is disposed on the first support rod, and the hydraulic pump drives the first support rod to rise and fall to drive the coil or the heating container to rise and fall; and / or The driving unit includes a pneumatic pump, the moving unit includes a sealed cavity, a second support rod is provided on one side of the sealed cavity, the coil or the heating container is disposed on the second support rod, and the pneumatic pump drives the second support rod to rise and fall to move the coil or the heating container to rise and fall; and / or The driving part includes a first magnetic element, and the moving part includes a second magnetic element. At least one of the first magnetic element and the second magnetic element is an electromagnet. The second magnetic element is connected to the coil or the heating container. When the electromagnet is energized, the first magnetic element and the second magnetic element attract or repel each other, causing the second magnetic element to move to push the coil or the heating container up and down.

19. The cooking utensil according to claim 9, characterized in that, The drive assembly further includes a magnetic shielding structure, which is at least partially located between the drive unit and the coil disk, for isolating at least a portion of the drive unit from the magnetic field of the coil disk.

20. The cooking utensil according to claim 19, characterized in that, The magnetic shielding structure includes a magnetic shielding cover that surrounds at least a portion of the driving portion circumferentially; or the magnetic shielding structure includes a magnetic shielding ring; or the magnetic shielding structure includes a magnetic shielding wire; or the magnetic shielding structure is provided with a magnetic shielding coating; and / or The magnetic shielding structure is installed on the drive unit.

21. The cooking utensil according to claim 6, characterized in that, A coil is wound on the support base. When the coil on the support base is energized, it can generate a magnetic field to heat the heating container.

22. The cooking utensil according to any one of claims 1 to 21, characterized in that, The coil can oscillate relative to the heating container; and / or The coil is capable of moving in a direction perpendicular to the height of the cooking appliance; and / or The heating container is capable of oscillating relative to the heating container; and / or The heating container is movable relative to the coil in a direction perpendicular to the height of the cooking appliance.

23. The cooking utensil according to any one of claims 1 to 21, characterized in that, The distance between the coil and the heating container can be gradually changed so that the heating power of the cooking appliance can be gradually adjusted.

24. The cooking utensil according to any one of claims 1 to 21, characterized in that, Also includes: A magnetic field regulating component is disposed within the housing. The magnetic field adjusting member can move relative to the coil disk, or the coil disk can move relative to the magnetic field adjusting member, so as to change the magnetic field of the coil of the coil disk; or the distance between the magnetic field adjusting member and the coil disk remains unchanged.

25. The cooking utensil according to claim 24, characterized in that, When the distance between the magnetic field adjuster and the coil disk remains constant, and the coil disk moves, the magnetic field adjuster can move with the coil disk.

26. The cooking utensil according to any one of claims 1 to 21, characterized in that, The coil includes multiple sub-coil coils, which are assembled into a disc-shaped coil. At least one of the sub-coil coils is movable relative to the heating container to adjust the heating power of the cooking appliance.

27. The cooking utensil according to any one of claims 1 to 21, characterized in that, The cooking appliance includes any one of an induction cooker, a rice cooker, or an electric pressure cooker.

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