Coil panel, heating assembly and cooking appliance

Abstract

The application provides a coil panel, a heating assembly and a cooking appliance. The coil panel comprises a magnetic strip assembly, an upper winding assembly and a lower winding assembly. The magnetic strip assembly comprises a plurality of magnetic strips. Each magnetic strip comprises a main body portion and an extension portion. One end of the extension portion is connected to the main body portion. The other end of the extension portion extends away from the main body portion on a first side. The upper winding assembly is a powered circuit. The upper winding assembly is arranged on the first side of the magnetic strip assembly. The extension portion is located outside the upper winding assembly. The lower winding assembly is a non-powered circuit. The lower winding assembly is arranged on a second side of the magnetic strip assembly. The upper winding assembly generates a first magnetic field in a powered state and the first magnetic field acts on the lower winding assembly. The lower winding assembly generates a second magnetic field after generating a reverse current. The magnetic field directions of the first magnetic field and the second magnetic field are opposite in the circumferential direction of the coil panel. The magnetic field directions of the first magnetic field and the second magnetic field on the magnetic strip are the same. The coil panel can improve the compatibility when different pots are heated.

Description

Technical Field

[0001] This application relates to the field of cooking appliance technology, and more particularly to a coil, heating element, and cooking appliance. Background Technology

[0002] An induction cooker is a common cooking appliance with advantages such as high heating efficiency, fast heating speed, and safe electric heating. The principle of an induction cooker is electromagnetic induction, that is, when a pot is placed in an alternating magnetic field, induced eddy currents are generated, and these eddy currents produce a heating effect, thus heating the pot.

[0003] Normally, when an induction cooker heats a pot, it can only heat the bottom of the pot and cannot heat the sides. In related technologies, concave induction cookers are generally used to heat the pot, so that the bottom and sides of the pot can be heated simultaneously. Specifically, the electromagnetic coil of the induction cooker is made into a concave surface with a certain curvature to fit the curved surface of the pot, so that the electromagnetic coil wraps around the pot wall and heats the pot wall.

[0004] However, the concave induction cooker mentioned above is not compatible with flat-bottomed cookware due to its fixed curvature. When flat-bottomed cookware is placed in the concave induction cooker, the cookware heats up poorly or even fails to heat properly. In addition, the heating effect is relatively poor when the curvature of the cookware does not completely match the curvature of the concave induction cooker itself. Utility Model Content

[0005] Based on this, this application provides a coil, heating element, and cooking appliance that can improve compatibility when heating different cookware.

[0006] In a first aspect, this application provides a coil for heating a cookware, comprising:

[0007] A magnetic strip assembly having a first side and a second side opposite to each other, the cookware being located on the first side of the magnetic strip assembly, and the magnetic strip assembly including a plurality of magnetic strips, each magnetic strip including a main body and an extension, one end of the extension being connected to the main body, and the other end of the extension extending away from the main body on the first side;

[0008] An upper winding assembly, which is an energized circuit, is disposed on the first side of the magnetic strip assembly, and the extension is located on the outer periphery of the upper winding assembly;

[0009] And a lower winding assembly, wherein the lower winding assembly is a non-energized circuit, and the lower winding assembly is disposed on the second side of the magnetic strip assembly;

[0010] When the upper winding assembly is energized, it generates a first magnetic field and acts on the lower winding assembly. After the lower winding assembly generates a reverse current, it generates a second magnetic field. The magnetic fields of the first magnetic field and the second magnetic field are opposite in direction in the circumferential direction of the coil disk, and the magnetic fields of the first magnetic field and the second magnetic field are in the same direction on the magnetic strip.

[0011] The coil provided in this application embodiment is configured with a magnetic strip comprising a main body and an extension connected to the main body. One end of the extension, away from the main body, extends in a direction away from the main body on a first side, i.e., the end of the extension away from the main body extends in the direction of the cookware. In addition, the upper winding assembly is designed as an energized circuit, and the lower winding assembly is designed as a non-energized circuit. When the upper winding assembly is energized, it generates a first magnetic field and acts on the lower winding assembly. The lower winding assembly generates a second magnetic field after generating a reverse current. The magnetic fields of the first and second magnetic fields on the magnetic strip are in the same direction. In this way, whether it is the magnetic field generated by the lower winding assembly or the magnetic field generated by the upper winding assembly, the magnetic field acting on the magnetic strip is in the same direction. That is, the lower winding assembly can enhance the magnetic field on the magnetic strip. The extension of the magnetic strip has the function of guiding the magnetic field. After being guided by the extension of the magnetic strip, the magnetic field is led out to the pot wall of the cookware through the extension of the magnetic strip, thereby enhancing the magnetic field of the pot wall and improving the heating effect of the pot wall. This improves the compatibility when heating different cookware.

[0012] In one possible implementation, a plurality of magnetic strips are arranged sequentially around the axial direction of the coil disk, such that the lines connecting the plurality of extensions lie on the same circle.

[0013] In one possible implementation, the upper winding assembly includes a first coil with multiple turns arranged around the axial direction of the coil disk, and the number of turns of the first coil is greater than or equal to 10.

[0014] In one possible implementation, the lower winding assembly includes at least one group of coils coaxially wound, each group of coils including one or more turns of a second coil arranged around the axial direction of the coil disc.

[0015] In one possible implementation, the first coil comprises multiple strands of wire;

[0016] And / or, the second coil comprises multiple strands of wire.

[0017] In one possible implementation, the difference between the maximum diameter of the second coil and the maximum diameter of the first coil is less than or equal to 100 mm.

[0018] In one possible implementation, the first coil is made of aluminum or copper;

[0019] And / or, the second coil is made of aluminum or copper.

[0020] In one possible implementation, a tray is further included; the tray is used to fix the magnetic strip assembly; and the tray includes a first winding portion and a second winding portion disposed opposite to each other, the upper winding assembly is wound around the first winding portion, and the lower winding assembly is wound around the second winding portion.

[0021] In a second aspect, this application provides a heating assembly, including a magnetic sensing component and the coil disk provided in the first aspect above, wherein the magnetic sensing component is disposed on the coil disk;

[0022] The magnetic sensing component includes at least three magnetic sensing sheets, which are spaced apart circumferentially along the coil disk.

[0023] Thirdly, this application provides a cooking appliance, including a housing and a heating component provided in the second aspect above, wherein the heating component is housed in the housing.

[0024] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems solved by the coil, heating component, and cooking appliance provided by this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the coil disk provided in an embodiment of this application;

[0027] Figure 2 This is a partial structural schematic diagram of the coil disk provided in an embodiment of this application;

[0028] Figure 3 A top view of the coil disk provided in an embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the cross-sectional structure of the coil disk provided in an embodiment of this application;

[0030] Figure 5This is a schematic diagram of the structure of the coil tray frame and magnetic strip assembly provided in the embodiments of this application;

[0031] Figure 6 This is an exploded view of the coil disk provided in an embodiment of this application;

[0032] Figure 7 This is a schematic diagram of the structure of the magnetic strip assembly, upper winding assembly, and lower winding assembly in the coil disk provided in the embodiments of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100-coil reel;

[0035] 110 - Magnetic strip assembly;

[0036] 1101 - First side;

[0037] 1102 - Second side;

[0038] 111 - Magnetic strip;

[0039] 1111-Main Body;

[0040] 1112 - Extension;

[0041] 120 - Upper winding assembly;

[0042] 1201 - First coil;

[0043] 121 - Inner coil;

[0044] 122 - Outer coil;

[0045] 130 - Lower winding assembly;

[0046] 140-Disc rack;

[0047] 141 - First winding section. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0051] The terms "first," "second," and "third" (if any) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0052] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0053] An induction cooker is a very common and frequently used cooking appliance. Its working principle is electromagnetic induction, that is, when a pot is placed in an alternating magnetic field, induced eddy currents are generated, and the induced eddy currents generate a heating effect to heat the pot.

[0054] However, when an induction cooker is used to cook in a wok, it can only heat the bottom of the wok and cannot heat the sides. This results in the bottom of the wok being hot while the sides are cold. This often causes the food at the bottom of the wok to burn or become mushy. In addition, the food is easily heated unevenly when the sides are cold, which also makes the food taste worse.

[0055] In electromagnetic heating technology, the concave induction cooker is one that can heat the walls of a wok. Its principle involves making an electromagnetic coil with a certain curvature concave surface to fit the curved surface of the wok, thus enveloping the wok wall and heating it. However, because the curvature of this concave induction cooker is fixed, it is difficult to use flat-bottomed cookware. When a flat-bottomed pan is placed in a concave induction cooker, the heating efficiency is very low, or it may not heat properly. Furthermore, even with a wok, if the curvature of the wok does not match the curvature of the concave induction cooker, the heating effect will be greatly reduced. This results in a lower user base for concave induction cookers, and their market share is far smaller than that of flat induction cookers.

[0056] In view of the above problems, this application provides a coil, a heating assembly, and a cooking appliance. The coil includes a magnetic strip assembly, an upper winding assembly, and a lower winding assembly. The magnetic strip assembly includes multiple magnetic strips, each including a main body and an extension. One end of the extension is connected to the main body, and the other end extends away from the main body from a first side. The upper winding assembly is an energized circuit, disposed on the first side of the magnetic strip assembly, with the extension located on the outer periphery of the upper winding assembly. The lower winding assembly is a non-energized circuit, disposed on the second side of the magnetic strip assembly. When energized, the upper winding assembly generates a first magnetic field that acts on the lower winding assembly. The lower winding assembly generates a second magnetic field after generating a reverse current. The first and second magnetic fields have opposite directions in the circumferential direction of the coil, but the first and second magnetic fields have the same direction on the magnetic strips. The coil of this application can improve compatibility when heating different cookware.

[0057] The specific implementation of the coil, heating assembly, and cooking device provided in this application will be described in detail below with reference to the accompanying drawings.

[0058] The cooking appliance provided in this application embodiment may include a housing and a heating component, with the heating component housed in the housing.

[0059] The housing may include a bottom shell and a front panel, which are connected to form a whole, thereby defining a receiving cavity within the housing. The heating element can be housed within the receiving cavity. Furthermore, the cooking appliance may include components such as a fan assembly to dissipate heat from the heating element. The housing can integrate the heating element and the fan assembly together. The cookware can contact the front panel, allowing the cookware to be placed on the cooking appliance for heating. The heating element converts electrical energy into heat energy, thereby heating the cookware and the food inside. Thus, the heating element can serve as a heat source for the cooking appliance to heat the cookware.

[0060] It should be understood that the cooking appliance provided in the embodiments of this application can be an induction cooker or an induction stove, and the embodiments of this application do not limit it.

[0061] Based on the above embodiments, this application also provides a heating assembly, which may include a coil disk and a magnetic sensing assembly. The magnetic sensing assembly may be disposed on the coil disk and may include at least three magnetic sensing sheets, which may be arranged at intervals along the circumference of the coil disk.

[0062] The number of magnetic sensing sheets can be three or more. On the one hand, this can reduce the planar size of a single magnetic sensing sheet, thereby effectively reducing the aspect ratio of the magnetic sensing sheet and thus effectively improving the rigidity of the magnetic sensing sheet. On the other hand, it can increase the working area of ​​the magnetic sensing assembly, thereby improving the working efficiency of the magnetic sensing assembly.

[0063] By setting up a coil to generate an alternating magnetic field when energized, and setting up a magnetic sensing component to induce eddy currents in the alternating magnetic field to generate heat, the cookware can be heated by infrared radiation through the magnetic sensing component, thereby expanding the application range of cooking utensils.

[0064] In this embodiment, the coil is used to generate an alternating magnetic field when energized, so that the magnetic sensing component senses the alternating magnetic field. When the magnetic sensing component is placed in the alternating magnetic field, the magnetic lines of force pass through the magnetic sensing component, generating a large number of eddy currents on the magnetic sensing component, which in turn causes the magnetic sensing component to heat up on its own. The heat radiation from the magnetic sensing component then heats the cookware, thereby heating the food inside the cookware.

[0065] Alternatively, when the coil is energized, it can generate an alternating magnetic field. Both the magnetic sensing component and the cookware can sense the alternating magnetic field. When the magnetic sensing component and the cookware are placed in the alternating magnetic field, the magnetic lines of force pass through the magnetic sensing component and the cookware, generating a large number of eddy currents on the magnetic sensing component and the cookware. This causes the magnetic sensing component and the cookware to heat up on their own, and the heat from the magnetic sensing component can be conducted to the cookware, thus heating the food inside the cookware together.

[0066] In other words, when the cookware is non-magnetic, the alternating magnetic field generated when the coil is energized can act on the magnetic sensing component, thereby heating the non-magnetic cookware. This is the infrared heating scheme of the heating element. When the cookware is magnetic, the alternating magnetic field generated when the coil is energized can act on the magnetic sensing component, thereby heating the magnetic cookware. At the same time, the alternating magnetic field generated when the coil is energized can also directly act on the magnetic cookware, causing it to generate heat on its own. This is a scheme combining electromagnetic heating and infrared heating, which can improve the working efficiency of the heating element.

[0067] This allows the heating element to overcome the limitations of cookware materials, enabling cooking with both magnetic and non-magnetic cookware, thus expanding the application range of the heating element. Furthermore, compared to related technologies that combine electromagnetic and electroceramic heating, the control method of the heating element in this embodiment is simpler. Whether using infrared heating alone or a combination of electromagnetic and infrared heating, the same control scheme can be used, eliminating the need to select a specific control scheme based on the cookware material, thereby reducing the cost of cooking appliances.

[0068] The coil is used to heat the cookware, see reference. Figures 1 to 6 As shown in the embodiments of this application, the coil 100 may include: a magnetic strip assembly 110, an upper winding assembly 120, and a lower winding assembly 130, wherein the magnetic strip assembly 110 has opposing first sides 1101 and second sides 1102 (see...). Figure 6 As shown, the cookware can be located on the first side 1101 of the magnetic strip assembly 110. Furthermore, in this embodiment, the magnetic strip assembly 110 can include a plurality of magnetic strips 111, each of which can include a main body 1111 and an extension 1112. One end of the extension 1112 can be connected to the main body 1111, and the other end of the extension 1112 can extend from the first side 1101 in a direction away from the main body 1111. That is,

[0069] In this embodiment, the upper winding assembly 120 can be an energized circuit, and the upper winding assembly 120 can be disposed on the first side 1101 of the magnetic strip 111 assembly 110, with the extension 1112 located on the outer periphery of the upper winding assembly 120. The lower winding assembly 130 can be a non-energized circuit, and the lower winding assembly 130 can be disposed on the second side 1102 of the magnetic strip 111 assembly 110.

[0070] When the upper winding assembly 120 is energized, it can generate a first magnetic field and act on the lower winding assembly 130. After the lower winding assembly 130 generates a reverse current, it will generate a second magnetic field. The magnetic fields of the first magnetic field and the second magnetic field in the circumferential direction of the coil disk 100 are opposite in direction, while the magnetic fields of the first magnetic field and the second magnetic field on the magnetic strip 111 are in the same direction.

[0071] By configuring the magnetic strip 111 to include a main body 1111 and an extension 1112 connected to the main body 1111, with one end of the extension 1112 away from the main body 1111 extending away from the main body 1111 on a first side 1101, i.e., the end of the extension 1112 away from the main body 1111 extending towards the cookware, and by designing the upper winding assembly 120 as an energized circuit and the lower winding assembly 130 as a non-energized circuit, such as... Figure 7As shown, the upper winding assembly 120 generates a first magnetic field B1 when energized, which acts on the lower winding assembly 130. The lower winding assembly 130 then generates a second magnetic field B2 after producing a reverse current I2. The first and second magnetic fields have the same direction on the magnetic strip 111. Thus, regardless of whether the magnetic field generated by the lower winding assembly 130 or the upper winding assembly 120 is the same, the direction of the magnetic field acting on the magnetic strip 111 (i.e.,...) Figure 7 The third magnetic field (B3) is the same, that is, the lower winding assembly 130 can enhance the magnetic field on the magnetic strip 111, and the extension 1112 of the magnetic strip 111 has the function of guiding the magnetic field. After being guided by the extension 1112 of the magnetic strip 111, the magnetic field is led out to the pot wall of the cookware through the extension 1112 of the magnetic strip 111, which can enhance the penetrating magnetic field at the pot wall position, thereby enhancing the magnetic field of the pot wall and improving the heating effect of the pot wall. Thus, while improving the cooking experience, it can also improve the compatibility performance when heating different cookware.

[0072] Specifically, such as Figure 7 As shown, in some embodiments, the upper winding assembly 120 is energized during operation, thereby generating a first magnetic field B1, with a counterclockwise current flow. At this time, the magnetic field acts on the lower winding assembly 130. Since the lower winding assembly 130 self-closes, a reverse current (i.e., ...) is generated. Figure 7 The reverse current (I2) will generate a clockwise second magnetic field B2. Whether it is the clockwise magnetic field generated by the lower winding assembly 130 or the counterclockwise magnetic field generated by the upper winding assembly 120, the magnetic field acting on the magnetic strip 111 is in the same direction (i.e., Figure 7 In B3), the lower winding assembly 130 can enhance the magnetic field on the magnetic strip 111, and the magnetic strip 111 has the function of guiding the magnetic field. After being guided by the magnetic strip, the magnetic field is drawn out to the pot wall at the extension 1112 of the magnetic strip 111, thereby enhancing the magnetic field of the pot wall and improving the heating effect of the pot wall.

[0073] In addition, the second magnetic field B2 generated by the lower winding assembly 130 is opposite in direction to the first magnetic field B1 generated by the upper winding assembly 120, which can reduce the electromagnetic interference of the upper winding assembly 120 to the motherboard in the cooking appliance, thereby improving electromagnetic compatibility.

[0074] In the embodiments of this application, such as Figure 1 and Figure 5 As shown, multiple magnetic strips 111 can be arranged sequentially around the axis of the coil disk 100 so that the connecting lines between multiple extensions 1112 can be located on the same circle.

[0075] In some embodiments, the bottom of the cookware can be located on the side of the upper winding assembly 120 opposite to the main body 1111, and the extension 1112 is used to abut against the pot wall of the cookware. In this way, guided by the extension 1112, the magnetic field is drawn out to the pot wall of the cookware through the extension 1112, thereby enhancing the magnetic field of the pot wall and improving the heating effect of the pot wall.

[0076] In the embodiments of this application, see Figure 6 As shown, the upper winding assembly 120 may include a first coil 1201 with multiple turns arranged around the axis of the coil disk 100, and the number of turns of the first coil 1201 may be greater than or equal to 10. For example, the number of turns of the first coil 1201 may be 10, 11, 12, 13, 14 or 15 turns, etc., and the embodiments of this application are not limited to this, nor are they limited to the above examples.

[0077] In this embodiment, the lower winding assembly 130 can be a self-closing winding, and the lower winding assembly 130 may include at least one coil group coaxially wound, each coil group may include one or more turns of a second coil arranged around the axis of the coil disk 100. This embodiment, by adding a self-closing winding below the magnetic strip 111, can enhance the heat output of the pot wall.

[0078] Specifically, in the embodiments of this application, the lower winding assembly 130 may include one coil group, two coil groups, three coil groups, four coil groups, five coil groups, or more coil groups, etc., and the embodiments of this application do not limit this. In each coil group, the number of turns of the second coil may be 1 turn, 2 turns, 3 turns, 4 turns, 5 turns, 6 turns, or more, and the embodiments of this application do not limit this.

[0079] In this embodiment of the application, the first coil 1201 may include multiple strands of wire, and similarly, the second coil may include multiple strands of wire.

[0080] In this embodiment, the difference between the maximum diameter of the second coil and the maximum diameter of the first coil 1201 can be less than or equal to 100 mm. If the difference between the maximum diameter of the second coil and the maximum diameter of the first coil 1201 is too large, the effect on improving the position of the pot wall will be poor.

[0081] For example, the difference between the maximum diameter of the second coil and the maximum diameter of the first coil 1201 can be 100mm, 95mm, 90mm, 85mm, 80mm, 75mm, 70mm, 65mm or 60mm, etc. The embodiments of this application do not limit this, nor are they limited to the above examples.

[0082] It should be noted that the numerical values ​​and ranges involved in this application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors, which can be considered negligible by those skilled in the art.

[0083] In this embodiment, the first coil 1201 can be made of aluminum or copper, and similarly, the second coil can be made of aluminum or copper. This reduces the skin effect and improves energy efficiency.

[0084] In the embodiments of this application, reference continues to be made to Figure 6 As shown, the coil disk 100 may also include a disk frame 140, wherein the disk frame 140 is used to fix the magnetic strip 111 assembly 110. Specifically, the disk frame 140 may include a first winding portion (not shown in the figure) and a second winding portion 141 arranged opposite to each other, wherein the upper winding assembly 120 may be wound on the first winding portion, and the lower winding assembly 130 may be wound on the second winding portion 141.

[0085] In this embodiment, the upper winding assembly 120 can be wound around the side of the tray 140 facing the cookware, and the upper winding assembly 120 can include an inner coil 121 and an outer coil 122 with the same winding direction (see...). Figure 4 As shown), the outer coil 122 and the magnetic sensing component can be arranged along the radial direction of the coil disk 100, and the outer coil 122 can be arranged around the outer periphery of the magnetic sensing component, while the inner coil 121 and the magnetic sensing component can be arranged along the axial direction of the coil disk 100.

[0086] Additionally, it is understood that in the embodiments of this application, the inner coil 121 may be disposed on the side of the magnetic sensing component facing the coil plate 100, and the plurality of magnetic strips 111 may be disposed on the side of the plate holder 140 away from the cookware.

[0087] In this way, the tray 140 can be used to support the inner coil 121, the outer coil 122, and the magnetic strip 111. When the inner coil 121 and the outer coil 122 are energized, they can both generate alternating current, thereby generating an alternating magnetic field. The magnetic sensing component is located on one axial side of the inner coil 121, and the inner coil 121 can generate an alternating magnetic field at the bottom of the magnetic sensing component. The magnetic sensing component is located on the radial inner side of the outer coil 122, and the outer coil 122 can generate an alternating magnetic field on the outer periphery of the magnetic sensing component. The magnetic fields of the inner coil 121 and the outer coil 122 act together on the magnetic sensing component, which can make the heat generation of the magnetic sensing component more uniform, thereby improving the working efficiency of the magnetic sensing component.

[0088] The magnetic strip 111 can optimize the magnetic field of the heating element, thereby enhancing the strength of the alternating magnetic field and improving the heating efficiency of the heating element. In addition, the magnetic strip 111 can shield the magnetic field to prevent the heating element from interfering with other magnetic appliances, thereby improving the electromagnetic compatibility of the cooking appliance.

[0089] In this embodiment, the heating component may further include a heat insulation component, which may be disposed on the coil 100. The heat insulation component may have a heat insulation groove, and the magnetic sensing component may be disposed on the heat insulation groove.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A coil for heating cookware, characterized in that, include: A magnetic strip assembly having a first side and a second side opposite to each other, the cookware being located on the first side of the magnetic strip assembly, and the magnetic strip assembly including a plurality of magnetic strips, each magnetic strip including a main body and an extension, one end of the extension being connected to the main body, and the other end of the extension extending away from the main body on the first side; An upper winding assembly, which is an energized circuit, is disposed on the first side of the magnetic strip assembly, and the extension is located on the outer periphery of the upper winding assembly; And a lower winding assembly, wherein the lower winding assembly is a non-energized circuit, and the lower winding assembly is disposed on the second side of the magnetic strip assembly; When the upper winding assembly is energized, it generates a first magnetic field and acts on the lower winding assembly. After the lower winding assembly generates a reverse current, it generates a second magnetic field. The magnetic fields of the first magnetic field and the second magnetic field are opposite in direction in the circumferential direction of the coil disk, and the magnetic fields of the first magnetic field and the second magnetic field are in the same direction on the magnetic strip.

2. The coil disk according to claim 1, characterized in that, The plurality of magnetic strips are arranged sequentially around the axis of the coil disk so that the lines connecting the plurality of extensions lie on the same circle.

3. The coil disk according to claim 1, characterized in that, The upper winding assembly includes multiple turns of a first coil arranged around the axis of the coil disk, and the number of turns of the first coil is greater than or equal to 10.

4. The coil disk according to claim 3, characterized in that, The lower winding assembly includes at least one coil group coaxially wound, each coil group including one or more turns of a second coil arranged around the axial direction of the coil disc.

5. The coil disk according to claim 4, characterized in that, The first coil comprises multiple strands of wire; And / or, the second coil comprises multiple strands of wire.

6. The coil disk according to claim 4, characterized in that, The difference between the maximum diameter of the second coil and the maximum diameter of the first coil is less than or equal to 100 mm.

7. The coil disk according to claim 4, characterized in that, The first coil is made of aluminum or copper; And / or, the second coil is made of aluminum or copper.

8. The coil disk according to any one of claims 1 to 7, characterized in that, It also includes a tray frame; the tray frame is used to fix the magnetic strip assembly; and the tray frame includes a first winding portion and a second winding portion arranged opposite to each other, the upper winding assembly is wound around the first winding portion, and the lower winding assembly is wound around the second winding portion.

9. A heating assembly, characterized in that, It includes a magnetic sensing component and a coil disk as described in any one of claims 1-8, wherein the magnetic sensing component is disposed on the coil disk; The magnetic sensing component includes at least three magnetic sensing sheets, which are spaced apart circumferentially along the coil disk.

10. A cooking utensil, characterized in that, It includes a housing and the heating assembly as described in claim 9, wherein the heating assembly is housed within the housing.

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