Heating device

Abstract

This application provides a heating device, comprising: a housing, the housing including a cooktop panel; a support, disposed within the housing; a coil assembly, located within the housing, the coil assembly being disposed on the side of the support facing the cooktop panel, the coil assembly including: a first coil portion, the first coil portion including a first coil segment and a second coil segment, the first coil segment and the second coil segment being electrically connected; a second coil portion, the second coil portion surrounding the periphery of the first coil segment, the second coil segment surrounding the periphery of the second coil portion; and a controller, disposed within the housing, the first coil portion and the second coil portion being electrically connected to the controller, the controller being used to control the operation of the first coil portion and the second coil portion. This application rationally sets the structure of the heating device, changing the distribution position of the alternating magnetic field lines, so that the bottom and side walls of the cookware are both heated by alternating magnetic field lines, the bottom and side walls of the cookware can be effectively heated, realizing three-dimensional heating of the cookware at multiple positions and angles, and ensuring the uniformity of heating of the cookware.

Description

Technical Field

[0001] This application relates to the field of heating device technology, and more specifically, to a heating device. Background Technology

[0002] In related technologies, the heating device includes a coil assembly, which is a flat coil formed by a set of windings. When an iron pot is placed on the heating device, the coil assembly can only heat the bottom of the pot and cannot effectively heat the side walls, resulting in a large temperature difference between the bottom and side walls of the pot and uneven heating. This seriously affects the cooking effect and taste of the food. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, this application proposes a heating device.

[0005] In view of the above, this application proposes a heating device, comprising: a housing, the housing including a cooktop panel; a bracket disposed within the housing; a coil assembly located within the housing, the coil assembly being disposed on the side of the bracket facing the cooktop panel, the coil assembly comprising: a first coil portion, the first coil portion including a first coil segment and a second coil segment, the first coil segment and the second coil segment being electrically connected; a second coil portion, the second coil portion surrounding the periphery of the first coil segment, the second coil segment surrounding the periphery of the second coil portion; and a controller disposed within the housing, the first coil portion and the second coil portion being electrically connected to the controller respectively, the controller being used to control the operation of the first coil portion and the second coil portion.

[0006] The heating device provided in this application includes a housing, a bracket, a coil assembly, and a controller.

[0007] Both the support and the coil assembly are located inside the housing, with the coil assembly mounted on the support. The housing includes the cooktop panel, and the coil assembly is located between the cooktop panel and the support. When the cookware is placed on the cooktop panel, the heating device heats the cookware.

[0008] The coil assembly includes a first coil section and a second coil section. The first coil section includes a first coil segment and a second coil segment, which are electrically connected.

[0009] The first coil section and the second coil section are electrically connected to the controller, respectively. For example, the first coil section has a first lead section that is electrically connected to the controller, and the second coil section has a second lead section that is electrically connected to the controller. The controller can control the operation of the first coil section and the second coil section.

[0010] The first coil section and the second coil section are two independent coil sections. The controller can control the operation of the first coil section and the second coil section respectively. The controller can adjust the corresponding operating parameters of the first coil section and the second coil section according to actual usage requirements. The operating parameters include current frequency, etc., which will not be listed here.

[0011] In related technologies, when a planar coil formed by a set of windings is working, the current frequency at different positions of the planar coil is the same. The high-frequency alternating current generates an alternating magnetic field through the planar coil. The magnetic field strength is strongest in the central region of the planar coil and gradually decreases towards the edge. The magnetic field strength at the edge of the planar coil is low, which reduces the induction heating efficiency of the cookware and results in poor coupling effect at the edge of the planar coil.

[0012] In this application, the first coil part includes a first coil segment and a second coil segment. The second coil part surrounds the periphery of the first coil segment, and the second coil segment surrounds the periphery of the second coil part. The first coil segment and the second coil segment are electrically connected. When the first coil part is working, the corresponding operating parameters (e.g., current frequency) of the first coil segment and the second coil segment are the same. The first coil segment is the central part of the coil group, and the second coil segment is the edge part of the coil group. By setting the positions of the first coil segment, the second coil segment, and the second coil part, compared with the planar coil in the related technology, the distribution position of the alternating magnetic field lines is changed. The alternating magnetic field lines are not only concentrated at the bottom of the pot and then cut along the top of the pot, so that the bottom and side walls of the pot are heated by the alternating magnetic field lines. The bottom and side walls of the pot can be effectively heated, realizing three-dimensional heating of the pot in multiple positions and angles. This ensures the uniformity of heating of the pot and is beneficial to improving the cooking effect and taste of the food.

[0013] It is understandable that the first and second coil sections are electrically connected to the controller, therefore, the operating parameters of the first coil section can differ from those of the second coil section. For example, by making the power supply frequency of the first coil section greater than that of the second coil section, that is, by increasing the power supply frequency of the first and second coil sections compared to the second coil section, the magnetic field lines at the edge of the coil group can be made denser, increasing the magnetic field strength, lengthening the magnetic field line path, and increasing the height of the magnetic field lines. This allows the side walls of the cookware to also be heated by magnetic field line cutting, overcoming the problem of poor edge coupling effect of planar coils in related technologies, and achieving the purpose of effectively heating the side walls of the cookware.

[0014] Furthermore, the distance from the first coil segment to the cookware is smaller, resulting in a stronger coupling effect. The distance from the second coil segment to the cookware is larger, resulting in a weaker coupling effect. The distance from the second coil segment to the cookware is greater than the distance from the first coil segment to the cookware, but less than the distance from the first coil segment to the cookware. Compared to the first coil segment, the power supply frequency of the second coil segment is reduced, making the coupling effect of the second coil segment closer to the overall average coupling effect of the first coil segment. This further ensures the evenness and consistency of heating at different locations on the cookware.

[0015] Understandably, the controller can adjust the operating parameters of the first and second coil sections according to the different sizes and types of cookware, so that the bottom and side walls of different cookware can be heated, ensuring the uniformity of the cookware temperature, and effectively improving the adaptability, stability and reliability of the heating device.

[0016] It is understandable that the first coil section and the second coil section are two independent structures. Therefore, the power devices that cooperate with the first coil section and the power devices that cooperate with the second coil section are also relatively independent. This can avoid the problem of high stress on the power devices. While ensuring the performance of the heating device, lower-specification power devices can be selected, which is conducive to reducing the production cost of the heating device.

[0017] In some technical solutions, optionally, the shape of the inner peripheral wall of the second coil portion is the same as the shape of the outer peripheral wall of the first coil segment; and / or the shape of the outer peripheral wall of the second coil portion is the same as the shape of the inner peripheral wall of the second coil segment.

[0018] In this technical solution, the mating structure of the second coil section and the first coil section is defined.

[0019] The shape of the inner peripheral wall of the second coil section is the same as the shape of the outer peripheral wall of the first coil section. This arrangement can reduce the processing difficulty of the first coil section and the second coil section, improve the processing efficiency of the first coil section and the second coil section, and reduce the production cost of the coil assembly.

[0020] The shape of the outer peripheral wall of the second coil section is the same as the shape of the inner peripheral wall of the second coil section. This arrangement can reduce the processing difficulty of the first coil section and the second coil section, improve the processing efficiency of the first coil section and the second coil section, and reduce the production cost of the coil assembly.

[0021] In some technical solutions, optionally, the shape of the inner peripheral wall of the second coil portion is different from the shape of the outer peripheral wall of the first coil segment; and / or the shape of the outer peripheral wall of the second coil portion is different from the shape of the inner peripheral wall of the second coil segment.

[0022] In this technical solution, the mating structure of the second coil section and the first coil section is defined.

[0023] The shape of the inner peripheral wall of the second coil section is different from the shape of the outer peripheral wall of the first coil section. This arrangement can increase the distance between a part of the second coil section and the first coil section, which helps to reduce the mutual coupling interference between the second coil section and the first coil section and improve the reliability of the heating device.

[0024] The shape of the outer peripheral wall of the second coil section is different from the shape of the inner peripheral wall of the second coil segment. This arrangement can increase the distance between a part of the second coil section and the second coil segment, which helps to reduce the mutual coupling interference between the second coil section and the second coil segment and improve the reliability of the heating device.

[0025] In some technical solutions, optionally, the coil group is cross-sectioned along the direction perpendicular to the coil group to the support. In the cross-section, the cross-sectional area of ​​the first coil segment is S1, the cross-sectional area of ​​the second coil segment is S2, and the cross-sectional area of ​​the second coil part is S3. The number of winding layers of the first coil segment and the second coil segment is n1, and the number of winding layers of the second coil part is n2. Wherein, 0.75≤((S1+S2)×n1) / (S3×n2)≤1.25, n1≥1, n2≥1.

[0026] In this technical solution, the mating structure of the first coil section and the second coil section is further defined.

[0027] A cross-section is taken of the coil assembly along a direction perpendicular to the support. The cross-sectional area of ​​the first coil segment is denoted as S1, the cross-sectional area of ​​the second coil segment as S2, and the cross-sectional area of ​​the second coil section as S3. The number of winding layers of both the first and second coil segments is denoted as n1, and the number of winding layers of the second coil section is denoted as n2.

[0028] The relationships between S1, S2, S3, n1, and n2 satisfy: 0.75 ≤ ((S1+S2)×n1) / (S3×n2) ≤ 1.25, n1 ≥ 1, n2 ≥ 1. This means that the arrangement areas and volumes of the first coil segment, the second coil segment, and the second coil section are matched. Combined with the corresponding operating parameters of the first and second coil sections, while ensuring the heating effect of the heating device, the stress on the power devices that are respectively matched with the first and second coil sections can be reduced, further lowering the production cost of the heating device.

[0029] In some technical solutions, optionally, along the direction from the first coil segment to the second coil segment, there is a gap between the first coil segment and the second coil portion, and a gap between the second coil portion and the second coil segment.

[0030] In this technical solution, the mating structure of the first coil section and the second coil section is further defined.

[0031] Along the direction from the first coil segment to the second coil segment, there is a gap between the first coil segment and the second coil portion, and a gap between the second coil portion and the second coil segment. That is, there is a gap between the outer peripheral wall of the first coil segment and the inner peripheral wall of the second coil portion, and a gap between the outer peripheral wall of the second coil portion and the inner peripheral wall of the second coil segment.

[0032] This configuration can reduce coupling interference between the first coil section and the second coil section, which helps to enhance the reliability of the heating device and improve its performance.

[0033] In some technical solutions, the heating device may optionally include: a magnetic structure, which is used at least to separate the first coil segment and the second coil portion, and to separate the second coil portion and the second coil segment.

[0034] In this technical solution, the structure of the heating device is further defined so that the heating device also includes a magnetic structure.

[0035] The magnetic structure is used to separate the first coil segment and the second coil part, and to separate the second coil part and the second coil segment. For example, the first part of the magnetic structure is located between the first coil segment and the second coil part, and the second part of the magnetic structure is located between the second coil part and the second coil segment, so as to separate the first coil segment, the second coil segment and the second coil part. This can prevent the first coil part and the second coil part from coupling and interfering with each other, which is beneficial to enhancing the stability and reliability of the heating device and improving the performance and market competitiveness of the heating device.

[0036] In some technical solutions, the magnetic structure may optionally include: a first magnetic strip, which surrounds the outer peripheral wall of the first coil segment and the inner peripheral wall of the second coil portion; and / or a second magnetic strip, which surrounds the outer peripheral wall of the second coil portion and the inner peripheral wall of the second coil segment; and / or a third magnetic strip, which surrounds the outer peripheral wall of the second coil segment.

[0037] In this technical solution, the composition of the magnetic structure is defined.

[0038] The magnetic structure includes at least one of the following or a combination thereof: a first magnetic strip, a second magnetic strip, and a third magnetic strip.

[0039] The first magnetic strip has a ring structure and is wrapped between the outer peripheral wall of the first coil segment and the inner peripheral wall of the second coil section. This ensures that the first magnetic strip is present at different positions of the first coil segment and the second coil section, increasing the contact area between the first coil segment, the second coil section and the first magnetic strip. The first magnetic strip increases the distance between the first coil segment and the second coil section from all directions and positions, which can effectively prevent the first coil segment and the second coil section from coupling and interfering with each other, and is beneficial to enhancing the stability and reliability of the heating device.

[0040] The second magnetic strip has a ring structure and is wrapped between the outer peripheral wall of the second coil section and the inner peripheral wall of the second coil segment. This ensures that the second magnetic strip is present at different positions of the second coil segment and the second coil section, increasing the mating area between the second coil segment, the second coil section and the second magnetic strip. The second magnetic strip increases the distance between the second coil segment and the second coil section from all directions and positions, which can effectively prevent the second coil segment and the second coil section from coupling and interfering with each other, and is conducive to enhancing the stability and reliability of the heating device.

[0041] The third magnetic strip has a ring structure. The third magnetic strip surrounds the outer peripheral wall of the second coil segment, which can effectively prevent external devices from coupling interference to the second coil segment, and helps to enhance the stability and reliability of the heating device.

[0042] In some technical solutions, optionally, the magnetic structure includes: a plurality of first U-shaped magnetic strips, each first U-shaped magnetic strip including a first magnetic part, a second magnetic part and a third magnetic part, the third magnetic part being connected between the first magnetic part and the second magnetic part, the first magnetic part being located between the first coil segment and the second coil segment, the second magnetic part being located between the second coil segment and the second coil segment, the third magnetic part being located on the side of the support away from the coil group, and the plurality of first U-shaped magnetic strips being arranged at circumferential intervals along the first coil segment.

[0043] In this technical solution, the composition of the magnetic structure is further defined.

[0044] The magnetic structure includes a plurality of first U-shaped magnetic strips, which are arranged at circumferential intervals along a first coil segment. Each first U-shaped magnetic strip includes a first magnetic portion, a second magnetic portion, and a third magnetic portion, with the third magnetic portion connected between the first and second magnetic portions.

[0045] A first magnetic part is located between a first coil segment and a second coil segment, and a second magnetic part is located between the second coil segment and the second coil segment. Multiple first magnetic parts of multiple first U-shaped magnetic strips are arranged at circumferential intervals along the first coil segment, and multiple second magnetic parts of multiple first U-shaped magnetic strips are also arranged at circumferential intervals along the first coil segment. The multiple first magnetic parts cooperate to ensure uniform gaps at different positions of the first coil segment and the second coil segment. The multiple second magnetic parts cooperate to ensure uniform gaps at different positions of the second coil segment and the second coil segment, preventing mutual coupling interference between the first coil segment and the second coil segment, and enhancing the stability and reliability of the heating device.

[0046] Furthermore, the third magnetic part is located on the side of the bracket away from the coil assembly, that is, the third magnetic part is located on the back of the bracket. The third magnetic part has the function of enhancing the inductance of the coil assembly and preventing magnetic leakage on the back side, thereby further improving the performance of the heating device.

[0047] In some technical solutions, the magnetic structure may optionally include: a plurality of second U-shaped magnetic strips, each second U-shaped magnetic strip including a fourth magnetic part, a fifth magnetic part and a sixth magnetic part, the sixth magnetic part being connected between the fourth magnetic part and the fifth magnetic part, the fourth magnetic part being located between the second coil part and the second coil segment, the fifth magnetic part being located on the outer peripheral wall of the second coil segment, and the sixth magnetic part being located on the side of the support away from the coil group, the plurality of second U-shaped magnetic strips being arranged at circumferential intervals along the first coil segment.

[0048] In this technical solution, the composition of the magnetic structure is further defined.

[0049] The magnetic structure includes multiple second U-shaped magnetic strips, which are arranged circumferentially along the first coil segment. Each second U-shaped magnetic strip includes a fourth magnetic part, a fifth magnetic part, and a sixth magnetic part, with the sixth magnetic part connecting the fourth and fifth magnetic parts.

[0050] The fourth magnetic part is located between the second coil section and the second coil segment, and the fifth magnetic part is located on the outer peripheral wall of the second coil segment. Multiple fourth magnetic parts of the multiple second U-shaped magnetic strips are arranged at circumferential intervals along the first coil segment, and multiple fifth magnetic parts of the multiple second U-shaped magnetic strips are also arranged at circumferential intervals along the first coil segment. The multiple fourth magnetic parts cooperate to ensure the uniformity of the gap between different positions of the second coil segment and the second coil section. The multiple fifth magnetic parts cooperate to ensure the uniformity of the gap between different positions of external devices and the second coil segment. This effectively prevents coupling interference from external devices to the second coil segment, which helps to enhance the stability and reliability of the heating device.

[0051] Furthermore, the sixth magnetic part is located on the side of the bracket away from the coil assembly, that is, the sixth magnetic part is located on the back of the bracket. The sixth magnetic part has the function of enhancing the inductance of the coil assembly and preventing magnetic leakage on the back side, thereby further improving the performance of the heating device.

[0052] In some technical solutions, optionally, the side of the bracket away from the coil assembly is provided with a plurality of first recesses, each third magnetic part being located in a first recess; and / or the side of the bracket away from the coil assembly is provided with a plurality of second recesses, each sixth magnetic part being located in a second recess.

[0053] In this technical solution, the matching structure of the magnetic structure and the support is defined.

[0054] The support has multiple first recesses on the side opposite to the coil assembly. These first recesses mate with multiple third magnetic parts, specifically, each third magnetic part is located within a first recess. The first recesses serve to accommodate and fix the third magnetic parts, and also to limit their movement, ensuring the proper fit between the magnetic structure and the support. Furthermore, the location of the third magnetic parts within the first recesses reduces the fit between the support and the magnetic structure in the direction from the coil assembly to the support, and also reduces the size of the third magnetic parts protruding from the support. This prevents an increase in the internal space occupied by the third magnetic parts in the direction from the coil assembly to the support, and thus avoids increasing the thickness of the heating device.

[0055] And / or, the support has multiple second recesses on the side opposite to the coil assembly, and each of the multiple second recesses mates with a multiple sixth magnetic part. Specifically, each sixth magnetic part is located within a second recess. The second recesses serve to accommodate and fix the sixth magnetic parts, and also to limit the movement of the sixth magnetic parts, ensuring the fit dimensions between the magnetic structure and the support. Furthermore, the location of the sixth magnetic parts within the second recesses reduces the fit dimensions between the support and the magnetic structure in the direction from the coil assembly to the support, and also reduces the size of the sixth magnetic parts protruding from the support, thus avoiding increasing the internal space occupancy of the housing in the direction from the coil assembly to the support, and preventing an increase in the thickness of the heating device.

[0056] In some technical solutions, the bracket is optionally provided with a mounting part, a first coil segment is surrounded around the periphery of the mounting part, and a magnetic structure is also used to separate the mounting part and the first coil segment.

[0057] In this technical solution, the structure of the heating device is further defined. The bracket is provided with a mounting part, and the first coil segment surrounds the periphery of the mounting part. The magnetic structure is also used to separate the mounting part and the first coil segment. For example, the third part of the magnetic structure is located between the mounting part and the first coil segment to prevent external devices from coupling interference to the first coil segment, which helps to enhance the stability and reliability of the heating device.

[0058] In some technical solutions, optionally, the magnetic structure includes: a fourth magnetic strip, which surrounds the outer peripheral wall of the mounting portion and the inner peripheral wall of the first coil segment; or multiple third U-shaped magnetic strips, each third U-shaped magnetic strip including a seventh magnetic part, an eighth magnetic part, and a ninth magnetic part, the ninth magnetic part being connected between the seventh and eighth magnetic parts, the seventh magnetic part being located between the mounting portion and the first coil segment, the eighth magnetic part being located between the first coil segment and the second coil segment, and the ninth magnetic part being located on the side of the bracket away from the coil group, with the multiple third U-shaped magnetic strips arranged at intervals along the circumference of the mounting portion.

[0059] In this technical solution, the magnetic structure includes a fourth magnetic strip, which is a ring structure. The fourth magnetic strip surrounds the outer peripheral wall of the mounting part and the inner peripheral wall of the first coil segment, so that the fourth magnetic strip exists at different positions of the first coil segment and the mounting part. This increases the mating area of ​​the first coil segment, the mounting part and the fourth magnetic strip. The fourth magnetic strip increases the distance between the first coil segment and the mounting part from all directions and positions, which can effectively prevent the first coil segment and the mounting part from coupling and interfering with each other, and is conducive to enhancing the stability and reliability of the heating device.

[0060] Alternatively, the magnetic structure includes multiple third U-shaped magnetic strips, arranged circumferentially around the mounting portion. Each third U-shaped magnetic strip includes a seventh, eighth, and ninth magnetic portion, with the ninth magnetic portion connecting the seventh and eighth magnetic portions. The seventh magnetic portion is located between the mounting portion and the first coil segment, and the eighth magnetic portion is located between the first and second coil segments. The multiple seventh magnetic portions of the multiple third U-shaped magnetic strips are arranged circumferentially around the mounting portion, and the multiple eighth magnetic portions are also arranged circumferentially around the mounting portion. The multiple seventh magnetic portions cooperate to ensure uniform gaps at different positions on the first coil segment and the mounting portion. The multiple eighth magnetic portions cooperate to ensure uniform gaps at different positions on the first coil segment and the second coil segment, preventing mutual coupling interference between the mounting portion, the first coil segment, and the second coil segment, thus enhancing the stability and reliability of the heating device. Furthermore, the ninth magnetic portion is located on the side of the support away from the coil assembly, i.e., on the back of the support. This ninth magnetic portion enhances the inductance of the coil assembly and prevents back-side magnetic leakage, further improving the performance of the heating device.

[0061] In some technical solutions, optionally, when the magnetic structure includes a third U-shaped magnetic strip, the side of the bracket away from the coil assembly is provided with a plurality of third recesses, and each ninth magnetic part is located in a third recess.

[0062] In this technical solution, the matching structure of the magnetic structure and the support is defined.

[0063] The support has multiple third recesses on the side opposite to the coil assembly. These third recesses mate with multiple ninth magnetic parts, specifically, each ninth magnetic part is located within a third recess. The third recesses serve to accommodate and fix the ninth magnetic parts, and also to limit their movement, ensuring the proper fit between the magnetic structure and the support. Furthermore, the location of the ninth magnetic parts within the third recesses reduces the fit between the support and the magnetic structure in the direction from the coil assembly to the support, and also reduces the size of the ninth magnetic parts protruding from the support. This prevents an increase in the internal space occupied by the ninth magnetic parts in the direction from the coil assembly to the support, and thus avoids increasing the thickness of the heating device.

[0064] In some technical solutions, the coil assembly can optionally be a flat plate structure.

[0065] In this technical solution, the shape of the coil assembly is defined, making it a flat structure. This application rationally designs the structure of the coil assembly, enabling alternating magnetic field line cutting heating of both the bottom and side walls of the cookware. Both the bottom and side walls of the cookware can be effectively heated. Simultaneously, it does not increase the internal space occupancy of the housing in the direction from the coil assembly to the support, thus avoiding increasing the thickness of the heating device and maximizing the use of existing components to reduce the cost of modifying the heating device.

[0066] In some technical solutions, optionally, the bracket is provided with multiple first winding slots, multiple second winding slots and multiple third winding slots, with the first coil segment disposed in the multiple first winding slots, the second coil portion disposed in the multiple second winding slots, and the second coil segment disposed in the multiple third winding slots.

[0067] In this technical solution, the structure of the bracket is further defined so that the bracket has multiple first winding grooves, multiple second winding grooves, and multiple third winding grooves. Specifically, the bracket has multiple first winding grooves, multiple second winding grooves, and multiple third winding grooves on the side facing the cooktop.

[0068] A first coil segment is disposed in multiple first winding slots, a second coil portion is disposed in multiple second winding slots, and a second coil segment is disposed in multiple third winding slots. The multiple first winding slots serve to accommodate and fix the first coil segment. The multiple second winding slots serve to accommodate and fix the second coil portion. The multiple third winding slots serve to accommodate and fix the second coil segment. The multiple first, second, and third winding slots, working together, define the mating positions of the first and second coil portions, providing structural support to ensure the reliability of the magnetic field distribution.

[0069] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0070] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0071] Figure 1 A partial structural schematic diagram of the bracket and coil assembly according to the first embodiment of this application is shown;

[0072] Figure 2 An exploded view of the bracket and coil assembly of the first embodiment of this application is shown;

[0073] Figure 3 A partial structural schematic diagram of the coil assembly according to the first embodiment of this application is shown;

[0074] Figure 4 A partial structural schematic diagram of the coil assembly according to a second embodiment of this application is shown;

[0075] Figure 5 A partial structural schematic diagram of the coil assembly according to the third embodiment of this application is shown;

[0076] Figure 6 A partial structural schematic diagram of the coil assembly according to the fourth embodiment of this application is shown;

[0077] Figure 7 A partial structural schematic diagram of the coil assembly according to the fifth embodiment of this application is shown;

[0078] Figure 8 A partial structural schematic diagram of the coil assembly according to the sixth embodiment of this application is shown;

[0079] Figure 9 A partial structural schematic diagram of the coil assembly according to the seventh embodiment of this application is shown;

[0080] Figure 10 A partial structural schematic diagram of the coil assembly according to the eighth embodiment of this application is shown;

[0081] Figure 11 A partial structural schematic diagram of the heating device and cookware according to the first embodiment of this application is shown;

[0082] Figure 12 A partial structural schematic diagram of the bracket and coil assembly according to a second embodiment of this application is shown from a first perspective.

[0083] Figure 13 A partial structural schematic diagram of the bracket and coil assembly according to a second embodiment of this application is shown from a second perspective.

[0084] Figure 14 A partial structural schematic diagram of the bracket, coil assembly, and magnetic structure according to the second embodiment of this application is shown;

[0085] Figure 15 A partial structural schematic diagram of the bracket, coil assembly, and magnetic structure according to the third embodiment of this application is shown;

[0086] Figure 16 A partial structural schematic diagram of the bracket, coil assembly, and magnetic structure according to the fourth embodiment of this application is shown;

[0087] Figure 17 A partial structural schematic diagram of a magnetic structure according to an embodiment of this application is shown;

[0088] Figure 18A partial structural schematic diagram of the heating device and cookware according to the second embodiment of this application is shown;

[0089] Figure 19 A partial structural schematic diagram of the bracket, coil assembly, and magnetic structure of the fifth embodiment of this application is shown.

[0090] in, Figures 1 to 19 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0091] 10 Heating device, 100 Housing, 110 Cooktop panel, 200 Bracket, 210 First recess, 220 Second recess, 230 Third recess, 240 First winding groove, 250 Second winding groove, 260 Third winding groove, 270 Mounting part, 272 Outer peripheral wall of mounting part, 300 Coil assembly, 310 Unwound area, 400 First coil part, 410 First coil segment, 412 Inner peripheral wall of first coil segment, 414 Outer peripheral wall of first coil segment, 420 Second coil segment, 422 Inner peripheral wall of second coil segment, 424 Outer peripheral wall of second coil segment, 430 Winding, 5 00 Second coil section, 510 Inner peripheral wall of the second coil section, 520 Outer peripheral wall of the second coil section, 600 Controller, 700 Magnetic structure, 710 First magnetic strip, 720 Second magnetic strip, 730 Third magnetic strip, 740 First U-shaped magnetic strip, 742 First magnetic section, 744 Second magnetic section, 746 Third magnetic section, 750 Second U-shaped magnetic strip, 752 Fourth magnetic section, 754 Fifth magnetic section, 756 Sixth magnetic section, 760 Third U-shaped magnetic strip, 762 Seventh magnetic section, 764 Eighth magnetic section, 766 Ninth magnetic section, 770 Fourth magnetic strip, 80 Cookware. Detailed Implementation

[0092] To better understand the above-mentioned objectives, features, and advantages of this application, the application 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.

[0093] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0094] The following reference Figures 1 to 19 The heating device 10 of some embodiments of this application is described.

[0095] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6, Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 16 , Figure 18 and Figure 19 As shown, a heating device 10 according to some embodiments of this application includes a housing 100, a bracket 200, a coil assembly 300, and a controller 600.

[0096] The housing 100 includes a cooktop panel 110.

[0097] The bracket 200 is located inside the housing 100.

[0098] The coil assembly 300 is located inside the housing 100.

[0099] The coil assembly 300 is located on the side of the bracket 200 facing the cooktop panel 110.

[0100] The coil assembly 300 includes a first coil section 400 and a second coil section 500.

[0101] The first coil section 400 includes a first coil segment 410 and a second coil segment 420.

[0102] The first coil segment 410 and the second coil segment 420 are electrically connected.

[0103] The second coil section 500 surrounds the periphery of the first coil section 410.

[0104] The second coil segment 420 is wrapped around the periphery of the second coil section 500.

[0105] The controller 600 is located in the housing 100.

[0106] The first coil section 400 and the second coil section 500 are electrically connected to the controller 600, which controls the operation of the first coil section 400 and the second coil section 500.

[0107] The heating device 10 provided in this application includes a housing 100, a bracket 200, a coil assembly 300, and a controller 600.

[0108] Both the support 200 and the coil assembly 300 are located inside the housing 100. The coil assembly 300 is mounted on the support 200. The housing 100 includes a cooktop panel 110, and the coil assembly 300 is located between the cooktop panel 110 and the support 200. The cookware 80 is placed on the cooktop panel 110, and the heating device 10 can heat the cookware 80 when it is in operation.

[0109] The coil assembly 300 includes a first coil section 400 and a second coil section 500. The first coil section 400 includes a first coil segment 410 and a second coil segment 420, which are electrically connected.

[0110] The first coil section 400 and the second coil section 500 are electrically connected to the controller 600. For example, the first coil section 400 has a first lead section that is electrically connected to the controller 600, and the second coil section 500 has a second lead section that is electrically connected to the controller 600. The controller 600 can control the operation of the first coil section 400 and the second coil section 500.

[0111] The first coil section 400 and the second coil section 500 are two independent coil sections. The controller 600 can control the operation of the first coil section 400 and the second coil section 500 respectively. The controller 600 can adjust the corresponding operating parameters of the first coil section 400 and the second coil section 500 according to actual usage requirements. The operating parameters include current frequency, etc., which will not be listed here.

[0112] In related technologies, when a planar coil formed by a set of windings is working, the current frequency at different positions of the planar coil is the same. The high-frequency alternating current generates an alternating magnetic field through the planar coil. The magnetic field strength is strongest in the central region of the planar coil and gradually decreases towards the edge. The magnetic field strength at the edge of the planar coil is low, which reduces the induction heating efficiency of the cookware. The coupling effect at the edge of the planar coil is poor, making it impossible to achieve three-dimensional heating of the cookware.

[0113] In this application, the first coil portion 400 includes a first coil segment 410 and a second coil segment 420. The second coil portion 500 surrounds the periphery of the first coil segment 410, and the second coil segment 420 surrounds the periphery of the second coil portion 500. The first coil segment 410 and the second coil segment 420 are electrically connected. When the first coil portion 400 is operating, the corresponding operating parameters (e.g., current frequency) of the first coil segment 410 and the second coil segment 420 are the same. The first coil segment 410 is the central portion of the coil group 300, and the second coil segment 420 is the edge portion of the coil group 300. By setting the positions of the first coil segment 410, the second coil segment 420, and the second coil section 500, compared to the planar coil in related technologies, the distribution position of the alternating magnetic field lines is changed. The alternating magnetic field lines are not only concentrated at the bottom of the pot 80, but also cut along the top of the pot 80, so that the bottom and side walls of the pot 80 are heated by alternating magnetic field lines. The bottom and side walls of the pot 80 can be effectively heated, realizing three-dimensional heating of the pot 80 in multiple positions and angles. This ensures the uniformity of heating of the pot 80, which is beneficial to improving the cooking effect and taste of the food.

[0114] It is understood that since the first coil section 400 and the second coil section 500 are electrically connected to the controller 600, the operating parameters corresponding to the first coil section 400 can be different from those corresponding to the second coil section 500. For example, the power supply frequency of the first coil section 400 can be made greater than that of the second coil section 500. That is, the power supply frequency of the first coil segment 410 and the second coil segment 420 can be increased compared to that of the second coil section 500. The second coil segment 420 is the edge part of the coil group 300. Increasing the power supply frequency of the second coil segment 420 can make the magnetic field lines at the second coil segment 420 denser, increase the magnetic field strength at the second coil segment 420, lengthen the magnetic field line path, and increase the height of the magnetic field lines. This allows the side wall of the cookware 80 to also be heated by magnetic field line cutting, thereby overcoming the problem of poor edge coupling effect of the planar coil in related technologies and achieving the purpose of effectively heating the side wall of the cookware 80.

[0115] Furthermore, the distance from the first coil segment 410 to the cookware 80 is relatively small, resulting in a strong coupling effect. The distance from the second coil segment 420 to the cookware 80 is relatively large, resulting in a weak coupling effect. The distance from the second coil segment 500 to the cookware 80 is greater than the distance from the first coil segment 410 to the cookware 80, but less than the distance from the second coil segment 420 to the cookware 80. Compared to the first coil segment 400, the power supply frequency of the second coil segment 500 is reduced, making the coupling effect of the second coil segment 500 closer to the overall average coupling effect of the first coil segment 400. This further ensures the evenness and consistency of heating at different locations on the cookware 80.

[0116] Understandably, the controller 600 can adjust the operating parameters of the first coil section 400 and the second coil section 500 according to the different sizes and types of cookware 80, so that the bottom and side walls of different cookware 80 can be heated, ensuring the temperature uniformity of the cookware 80, and effectively improving the adaptability, stability and reliability of the heating device 10.

[0117] It is understandable that the first coil section 400 and the second coil section 500 are two independent structures. Therefore, the power devices that cooperate with the first coil section 400 and the power devices that cooperate with the second coil section 500 are also relatively independent. In this way, the problem of high stress on the power devices can be avoided. While ensuring the performance of the heating device 10, lower-specification power devices can be selected, which is conducive to reducing the production cost of the heating device 10.

[0118] For example, the first coil segment 410 and the second coil segment 420 of the first coil section 400 are connected in series.

[0119] For example, there is one first coil section 400 and one second coil section 500.

[0120] For example, the number of second coil segments 420 is at least one, and the number of second coil portions 500 is at least one. When the number of second coil segments 420 is multiple, the multiple second coil segments 420 and the first coil segment 410 are connected in series. When the number of second coil portions 500 is multiple, the multiple second coil portions 500 are connected in series.

[0121] Taking two second coil sections 500 and one first coil section 400 as an example, one second coil section 500 is located between the first coil section 410 and the second coil section 420, and the other second coil section 500 surrounds the periphery of the second coil section 420.

[0122] Taking two examples of the number of the second coil section 500 and the second coil segment 420, the first coil segment 410, the second coil section 500, the second coil segment 420, and the second coil section 500 and the second coil segment 420 are arranged sequentially from the inside of the coil group 300 to the outside of the coil group 300.

[0123] The first coil segment 410 and the second coil segment 420 are connected by winding 430.

[0124] In some embodiments, the inner peripheral wall 510 of the second coil portion may have the same shape as the outer peripheral wall 414 of the first coil segment.

[0125] And / or the shape of the outer peripheral wall 520 of the second coil section is the same as the shape of the inner peripheral wall 422 of the second coil section.

[0126] In this embodiment, the mating structure of the second coil portion 500 and the first coil portion 400 is defined.

[0127] like Figure 2 As shown, the shape of the inner peripheral wall 510 of the second coil section is the same as the shape of the outer peripheral wall 414 of the first coil section. This arrangement can reduce the processing difficulty of the first coil section 400 and the second coil section 500, which is conducive to improving the processing efficiency of the first coil section 400 and the second coil section 500, and is conducive to reducing the production cost of the coil assembly 300.

[0128] like Figure 2 As shown, the shape of the outer peripheral wall 520 of the second coil section is the same as the shape of the inner peripheral wall 422 of the second coil section. This arrangement can reduce the processing difficulty of the first coil section 400 and the second coil section 500, which is conducive to improving the processing efficiency of the first coil section 400 and the second coil section 500, and conducive to reducing the production cost of the coil assembly 300.

[0129] For example, when the shape of the inner peripheral wall 510 of the second coil portion is the same as the shape of the outer peripheral wall 414 of the first coil segment, the shape of the inner peripheral wall 510 of the second coil portion includes a circle, a rectangle, an ellipse, a racetrack shape, a polygon, or a star shape, etc., which will not be listed here.

[0130] For example, when the shape of the outer peripheral wall 520 of the second coil portion is the same as the shape of the inner peripheral wall 422 of the second coil segment, the shape of the outer peripheral wall 520 of the second coil portion includes a circle, a rectangle, an ellipse, a racetrack shape, a polygon, or a star shape, etc., which will not be listed here.

[0131] In some embodiments, the shape of the inner peripheral wall 510 of the second coil portion may be different from the shape of the outer peripheral wall 414 of the first coil segment.

[0132] And / or the shape of the outer peripheral wall 520 of the second coil portion is different from the shape of the inner peripheral wall 422 of the second coil segment.

[0133] In this embodiment, the mating structure of the second coil portion 500 and the first coil portion 400 is defined.

[0134] like Figure 9 As shown, the shape of the inner peripheral wall 510 of the second coil section is different from the shape of the outer peripheral wall 414 of the first coil section. This arrangement can increase the distance between a part of the second coil section 500 and the first coil section 410, which is beneficial to reduce the mutual coupling interference between the second coil section 500 and the first coil section 410 and improve the reliability of the heating device 10.

[0135] like Figure 9 As shown, and / or the shape of the outer peripheral wall 520 of the second coil portion is different from the shape of the inner peripheral wall 422 of the second coil segment. This arrangement can increase the distance between a part of the second coil portion 500 and the second coil segment 420, which is beneficial to reduce the mutual coupling interference between the second coil portion 500 and the second coil segment 420 and improve the reliability of the heating device 10.

[0136] For example, the shape of the inner peripheral wall 510 of the second coil portion is different from the shape of the outer peripheral wall 414 of the first coil segment. For example, when the outer peripheral wall 414 of the first coil segment is circular, the shape of the inner peripheral wall 510 of the second coil portion is polygonal. For example, when the outer peripheral wall 414 of the first coil segment is rectangular, the shape of the inner peripheral wall 510 of the second coil portion is circular.

[0137] For example, the shape of the outer peripheral wall 520 of the second coil portion is different from the shape of the inner peripheral wall 422 of the second coil segment. For example, the outer peripheral wall 520 of the second coil portion is polygonal, and the inner peripheral wall 422 of the second coil segment is circular. For example, the outer peripheral wall 520 of the second coil portion is circular, and the inner peripheral wall 422 of the second coil segment is rectangular.

[0138] For example, the shape of the inner peripheral wall 510 of the second coil portion may be the same as or different from the shape of the outer peripheral wall 520 of the second coil portion.

[0139] For example, the shape of the inner peripheral wall 422 of the second coil segment may be the same as or different from the shape of the outer peripheral wall 424 of the second coil segment.

[0140] like Figure 9 and Figure 10 As shown, because the shape of the inner peripheral wall 510 of the second coil section is different from the shape of the outer peripheral wall 414 of the first coil section, and / or the shape of the outer peripheral wall 520 of the second coil section is different from the shape of the inner peripheral wall 422 of the second coil section, the coil assembly 300 has a non-wound region 310.

[0141] In some embodiments, optionally, such as Figure 12 As shown, a cross section is made of the coil assembly 300 along the direction perpendicular to the coil assembly 300 to the support 200.

[0142] In the cross-section, the cross-sectional area of ​​the first coil segment 410 is S1, the cross-sectional area of ​​the second coil segment 420 is S2, and the cross-sectional area of ​​the second coil section 500 is S3.

[0143] The number of winding layers in the first coil segment 410 and the second coil segment 420 is n1, and the number of winding layers in the second coil section 500 is n2.

[0144] Wherein, 0.75≤((S1+S2)×n1) / (S3×n2)≤1.25, n1≥1, n2≥1.

[0145] In this embodiment, the mating structure of the first coil portion 400 and the second coil portion 500 is further defined.

[0146] A cross-section is taken of the coil assembly 300 along a direction perpendicular to the direction from the coil assembly 300 to the support 200. In the cross-section, the cross-sectional area of ​​the first coil segment 410 is denoted as S1, the cross-sectional area of ​​the second coil segment 420 is denoted as S2, and the cross-sectional area of ​​the second coil section 500 is denoted as S3. The number of winding layers of both the first coil segment 410 and the second coil segment 420 is denoted as n1, and the number of winding layers of the second coil section 500 is denoted as n2.

[0147] The relationships between S1, S2, S3, n1, and n2 satisfy: 0.75 ≤ ((S1+S2)×n1) / (S3×n2) ≤ 1.25, n1 ≥ 1, n2 ≥ 1. That is, the arrangement areas and volumes of the first coil segment 410, the second coil segment 420, and the second coil section 500 are matched. Combined with the corresponding operating parameters of the first coil section 400 and the second coil section 500, while ensuring the heating effect of the heating device 10, the stress on the power devices that are respectively matched with the first coil section 400 and the second coil section 500 can be reduced, further reducing the production cost of the heating device 10.

[0148] For example, 0.9≤((S1+S2)×n1) / (S3×n2)≤1.1.

[0149] For example, ((S1+S2)×n1) / (S3×n2)=0.95, ((S1+S2)×n1) / (S3×n2)=1 and ((S1+S2)×n1) / (S3×n2)=1.05, etc., which will not be listed here one by one.

[0150] For example, the number of winding layers of the first coil segment 410 and the second coil portion 500 are equal, and the number of winding layers of the second coil segment 420 and the second coil portion 500 are equal.

[0151] For example, the number of winding layers of the first coil segment 410 and the second coil portion 500 are not equal, and the number of winding layers of the second coil segment 420 and the second coil portion 500 are not equal.

[0152] In some embodiments, optionally, a gap is provided between the first coil segment 410 and the second coil portion 500 along the direction from the first coil segment 410 to the second coil segment 420, and a gap is provided between the second coil portion 500 and the second coil segment 420.

[0153] In this embodiment, the mating structure of the first coil portion 400 and the second coil portion 500 is further defined.

[0154] Along the direction from the first coil segment 410 to the second coil segment 420, there is a gap between the first coil segment 410 and the second coil portion 500, and a gap between the second coil portion 500 and the second coil segment 420. That is, there is a gap between the outer peripheral wall 414 of the first coil segment and the inner peripheral wall 510 of the second coil portion, and a gap between the outer peripheral wall 520 of the second coil portion and the inner peripheral wall 422 of the second coil segment.

[0155] This configuration can reduce the coupling interference between the first coil section 400 and the second coil section 500, which helps to enhance the reliability of the heating device 10 and improve its performance.

[0156] In some embodiments, optionally, such as Figure 14 , Figure 15 , Figure 16 , Figure 17 and Figure 19 As shown, the heating device 10 also includes a magnetic structure 700.

[0157] The magnetic structure 700 is used at least to separate the first coil segment 410 and the second coil portion 500, and to separate the second coil portion 500 and the second coil segment 420.

[0158] In this embodiment, the structure of the heating device 10 is further defined such that the heating device 10 also includes a magnetic structure 700.

[0159] The magnetic structure 700 is used at least to separate the first coil segment 410 and the second coil portion 500, and to separate the second coil portion 500 and the second coil segment 420. For example, the first part of the magnetic structure 700 is located between the first coil segment 410 and the second coil portion 500, and the second part of the magnetic structure 700 is located between the second coil portion 500 and the second coil segment 420, so as to separate the first coil segment 410, the second coil segment 420 and the second coil portion 500. This can prevent the first coil portion 400 and the second coil portion 500 from coupling and interfering with each other, which is beneficial to enhancing the stability and reliability of the heating device 10 and improving the performance and market competitiveness of the heating device 10.

[0160] In some embodiments, optionally, such as Figure 14 , Figure 15 and Figure 19 As shown, the magnetic structure 700 includes a first magnetic strip 710, which surrounds the outer peripheral wall 414 of the first coil segment and the inner peripheral wall 510 of the second coil portion.

[0161] And / or, such as Figure 14 , Figure 15 and Figure 19 As shown, the magnetic structure 700 includes a second magnetic strip 720, which surrounds the outer peripheral wall 520 of the second coil portion and the inner peripheral wall 422 of the second coil segment.

[0162] And / or, such as Figure 15 As shown, the magnetic structure 700 includes a third magnetic strip 730, which surrounds the outer peripheral wall 424 of the second coil segment.

[0163] In this embodiment, the composition of the magnetic structure 700 is defined.

[0164] The magnetic structure 700 includes at least one of the following or a combination thereof: a first magnetic strip 710, a second magnetic strip 720 and a third magnetic strip 730.

[0165] The first magnetic strip 710 has a ring structure and surrounds the outer peripheral wall 414 of the first coil segment and the inner peripheral wall 510 of the second coil portion. This ensures that the first magnetic strip 710 is present at different positions of the first coil segment 410 and the second coil portion 500, thereby increasing the mating area of ​​the first coil segment 410, the second coil portion 500 and the first magnetic strip 710. The first magnetic strip 710 increases the distance between the first coil segment 410 and the second coil portion 500 from all directions and positions, which can effectively prevent the first coil segment 410 and the second coil portion 500 from coupling and interfering with each other, and is beneficial to enhancing the stability and reliability of the heating device 10.

[0166] The second magnetic strip 720 has a ring structure. The second magnetic strip 720 surrounds the outer peripheral wall 520 of the second coil portion and the inner peripheral wall 422 of the second coil segment, so that the second magnetic strip 720 exists at different positions of the second coil segment 420 and the second coil portion 500. This increases the mating area of ​​the second coil segment 420, the second coil portion 500 and the second magnetic strip 720. The second magnetic strip 720 increases the distance between the second coil segment 420 and the second coil portion 500 from all directions and positions, which can effectively prevent the second coil segment 420 and the second coil portion 500 from coupling and interfering with each other, and is conducive to enhancing the stability and reliability of the heating device 10.

[0167] The third magnetic strip 730 has a ring structure. The third magnetic strip 730 surrounds the outer peripheral wall 424 of the second coil segment, which can effectively prevent external devices from coupling interference to the second coil segment 420, and is conducive to enhancing the stability and reliability of the heating device 10.

[0168] In some embodiments, optionally, such as Figure 16 and Figure 17 As shown, the magnetic structure 700 includes a plurality of first U-shaped magnetic strips 740.

[0169] The first U-shaped magnetic strip 740 includes a first magnetic part 742, a second magnetic part 744, and a third magnetic part 746.

[0170] The third magnetic part 746 is connected between the first magnetic part 742 and the second magnetic part 744.

[0171] The first magnetic part 742 is located between the first coil section 410 and the second coil section 500.

[0172] The second magnetic part 744 is located between the second coil part 500 and the second coil segment 420.

[0173] The third magnetic part 746 is located on the side of the bracket 200 away from the coil group 300.

[0174] Multiple first U-shaped magnetic strips 740 are arranged at circumferential intervals along the first coil segment 410.

[0175] In this embodiment, the composition of the magnetic structure 700 is further defined.

[0176] The magnetic structure 700 includes a plurality of first U-shaped magnetic strips 740, which are arranged at circumferential intervals along the first coil segment 410. Each first U-shaped magnetic strip 740 includes a first magnetic part 742, a second magnetic part 744, and a third magnetic part 746, with the third magnetic part 746 connected between the first magnetic part 742 and the second magnetic part 744.

[0177] A first magnetic part 742 is located between a first coil segment 410 and a second coil segment 500, and a second magnetic part 744 is located between a second coil segment 500 and a second coil segment 420. Multiple first magnetic parts 742 of multiple first U-shaped magnetic strips 740 are arranged at circumferential intervals along the first coil segment 410, and multiple second magnetic parts 744 of multiple first U-shaped magnetic strips 740 are also arranged at circumferential intervals along the first coil segment 410. The multiple first magnetic parts 742 cooperate to ensure uniform gaps at different positions of the first coil segment 410 and the second coil segment 500. The multiple second magnetic parts 744 cooperate to ensure uniform gaps at different positions of the second coil segment 420 and the second coil segment 500, preventing mutual coupling interference between the first coil segment 400 and the second coil segment 500, and enhancing the stability and reliability of the heating device 10.

[0178] Furthermore, the third magnetic part 746 is located on the side of the bracket 200 away from the coil assembly 300, that is, the third magnetic part 746 is located on the back of the bracket 200. The third magnetic part 746 has the function of enhancing the inductance of the coil assembly 300 and preventing magnetic leakage on the back side, thereby further improving the performance of the heating device 10.

[0179] In some embodiments, optionally, such as Figure 16 , Figure 17 and Figure 18 As shown, the magnetic structure 700 includes a plurality of second U-shaped magnetic strips 750.

[0180] The second U-shaped magnetic strip 750 includes a fourth magnetic part 752, a fifth magnetic part 754, and a sixth magnetic part 756.

[0181] The sixth magnetic part 756 is connected between the fourth magnetic part 752 and the fifth magnetic part 754.

[0182] The fourth magnetic part 752 is located between the second coil part 500 and the second coil segment 420.

[0183] The fifth magnetic part 754 is located at the outer peripheral wall 424 of the second coil segment.

[0184] The sixth magnetic part 756 is located on the side of the bracket 200 away from the coil group 300.

[0185] Multiple second U-shaped magnetic strips 750 are arranged at circumferential intervals along the first coil segment 410.

[0186] In this embodiment, the composition of the magnetic structure 700 is further defined.

[0187] The magnetic structure 700 includes a plurality of second U-shaped magnetic strips 750, which are arranged at circumferential intervals along the first coil segment 410. Each second U-shaped magnetic strip 750 includes a fourth magnetic part 752, a fifth magnetic part 754, and a sixth magnetic part 756, with the sixth magnetic part 756 connected between the fourth magnetic part 752 and the fifth magnetic part 754.

[0188] A fourth magnetic part 752 is located between the second coil part 500 and the second coil segment 420, and a fifth magnetic part 754 is located at the outer peripheral wall 424 of the second coil segment. Multiple fourth magnetic parts 752 of the multiple second U-shaped magnetic strips 750 are arranged at circumferential intervals along the first coil segment 410, and multiple fifth magnetic parts 754 of the multiple second U-shaped magnetic strips 750 are also arranged at circumferential intervals along the first coil segment 410. The multiple fourth magnetic parts 752 cooperate to ensure the uniformity of the gap between the second coil segment 420 and the second coil part 500 at different positions. The multiple fifth magnetic parts 754 cooperate to ensure the uniformity of the gap between external devices and the second coil segment 420 at different positions. This effectively prevents coupling interference from external devices to the second coil segment 420, which helps to enhance the stability and reliability of the heating device 10.

[0189] Furthermore, the sixth magnetic part 756 is located on the side of the bracket 200 away from the coil assembly 300, that is, the sixth magnetic part 756 is located on the back of the bracket 200. The sixth magnetic part 756 has the function of enhancing the inductance of the coil assembly 300 and preventing magnetic leakage on the back side, thereby further improving the performance of the heating device 10.

[0190] In some embodiments, optionally, such as Figure 16 and Figure 18 As shown, the bracket 200 has a plurality of first recesses 210 on the side away from the coil group 300, and each third magnetic part 746 is located in a first recess 210; and / or the bracket 200 has a plurality of second recesses 220 on the side away from the coil group 300, and each sixth magnetic part 756 is located in a second recess 220.

[0191] In this embodiment, the mating structure of the magnetic structure 700 and the support 200 is defined.

[0192] The bracket 200 has multiple first recesses 210 on the side opposite to the coil assembly 300. Each of the first recesses 210 mates with a plurality of third magnetic parts 746. Specifically, each third magnetic part 746 is located within a first recess 210. The first recesses 210 serve to accommodate and fix the third magnetic parts 746, and also to limit the movement of the third magnetic parts 746, ensuring the proper fit between the magnetic structure 700 and the bracket 200. Furthermore, the location of the third magnetic parts 746 within the first recesses 210 reduces the fit between the bracket 200 and the magnetic structure 700 in the direction from the coil assembly 300 to the bracket 200, and also reduces the size of the third magnetic parts 746 protruding from the bracket 200. This prevents an increase in the internal space occupied by the third magnetic parts 746 in the direction from the coil assembly 300 to the bracket 200, and also prevents an increase in the thickness of the heating device 10.

[0193] And / or, the support 200 has a plurality of second recesses 220 on the side opposite to the coil assembly 300. Each of the second recesses 220 mates with a plurality of sixth magnetic parts 756. Specifically, each sixth magnetic part 756 is located within a second recess 220. The second recesses 220 serve to accommodate and fix the sixth magnetic parts 756, and also to limit the movement of the sixth magnetic parts 756, ensuring the proper fit between the magnetic structure 700 and the support 200. Furthermore, the location of the sixth magnetic parts 756 within the second recesses 220 reduces the fit between the support 200 and the magnetic structure 700 in the direction from the coil assembly 300 to the support 200, and also reduces the size of the sixth magnetic parts 756 protruding from the support 200. This prevents an increase in the internal space occupied by the sixth magnetic part 756 in the direction from the coil assembly 300 to the support 200, and also prevents an increase in the thickness of the heating device 10.

[0194] In some embodiments, optionally, such as Figure 12 , Figure 16 , Figure 18 and Figure 19 As shown, the bracket 200 is provided with a mounting part 270.

[0195] The first coil segment 410 surrounds the periphery of the mounting portion 270.

[0196] The magnetic structure 700 is also used to separate the mounting section 270 and the first coil segment 410.

[0197] In this embodiment, the structure of the heating device 10 is further defined. The bracket 200 is provided with a mounting portion 270, and the first coil segment 410 surrounds the periphery of the mounting portion 270. The magnetic structure 700 is also used to separate the mounting portion 270 and the first coil segment 410. For example, a third part of the magnetic structure 700 is located between the mounting portion 270 and the first coil segment 410 to prevent external devices from coupling interference to the first coil segment 410, which helps to enhance the stability and reliability of the heating device 10 in use.

[0198] In some embodiments, optionally, such as Figure 19 As shown, the magnetic structure 700 includes a fourth magnetic strip 770, which surrounds the outer peripheral wall 272 of the mounting portion and the inner peripheral wall 412 of the first coil segment.

[0199] In this embodiment, the magnetic structure 700 includes a fourth magnetic strip 770, which is a ring structure. The fourth magnetic strip 770 surrounds the outer peripheral wall 272 of the mounting portion and the inner peripheral wall 412 of the first coil segment, so that the fourth magnetic strip 770 exists at different positions of the first coil segment 410 and the mounting portion 270. This increases the mating area of ​​the first coil segment 410, the mounting portion 270 and the fourth magnetic strip 770. The fourth magnetic strip 770 increases the distance between the first coil segment 410 and the mounting portion 270 from all directions and positions, which can effectively prevent the first coil segment 410 and the mounting portion 270 from coupling and interfering with each other, and is beneficial to enhancing the stability and reliability of the heating device 10.

[0200] In some embodiments, optionally, such as Figure 16 , Figure 17 and Figure 18 As shown, the magnetic structure 700 includes a plurality of third U-shaped magnetic strips 760, and the third U-shaped magnetic strips 760 include a seventh magnetic part 762, an eighth magnetic part 764 and a ninth magnetic part 766.

[0201] The ninth magnetic part 766 is connected between the seventh magnetic part 762 and the eighth magnetic part 764.

[0202] The seventh magnetic part 762 is located between the mounting part 270 and the first coil segment 410.

[0203] The eighth magnetic section 764 is located between the first coil section 410 and the second coil section 500.

[0204] The ninth magnetic part 766 is located on the side of the bracket 200 away from the coil group 300.

[0205] Multiple third U-shaped magnetic strips 760 are arranged at circumferential intervals along the mounting portion 270.

[0206] In this embodiment, the magnetic structure 700 includes a plurality of third U-shaped magnetic strips 760, which are arranged at intervals along the circumference of the mounting portion 270. Each third U-shaped magnetic strip 760 includes a seventh magnetic portion 762, an eighth magnetic portion 764, and a ninth magnetic portion 766, with the ninth magnetic portion 766 connecting the seventh magnetic portion 762 and the eighth magnetic portion 764. The seventh magnetic portion 762 is located between the mounting portion 270 and the first coil segment 410, and the eighth magnetic portion 764 is located between the first coil segment 410 and the second coil portion 500. The plurality of seventh magnetic portions 762 of the plurality of third U-shaped magnetic strips 760 are arranged at intervals along the circumference of the mounting portion 270, and the plurality of eighth magnetic portions 764 of the plurality of third U-shaped magnetic strips 760 are also arranged at intervals along the circumference of the mounting portion 270. The plurality of seventh magnetic portions 762 cooperate to ensure uniform gaps at different positions of the first coil segment 410 and the mounting portion 270. Multiple eighth magnetic parts 764 cooperate to ensure the uniformity of gaps at different positions of the first coil segment 410 and the second coil segment 500, preventing mutual coupling interference between the mounting part 270, the first coil segment 400, and the second coil segment 500, thereby enhancing the stability and reliability of the heating device 10. Furthermore, a ninth magnetic part 766 is located on the side of the bracket 200 away from the coil assembly 300, that is, on the back of the bracket 200. The ninth magnetic part 766 enhances the inductance of the coil assembly 300 and prevents magnetic leakage from the back side, further improving the performance of the heating device 10.

[0207] In some embodiments, optionally, such as Figure 18 As shown, when the magnetic structure 700 includes the third U-shaped magnetic strip 760, the bracket 200 is provided with a plurality of third recesses 230 on the side away from the coil group 300, and each ninth magnetic part 766 is located in a third recess 230.

[0208] In this embodiment, the mating structure of the magnetic structure 700 and the support 200 is defined.

[0209] The bracket 200 has multiple third recesses 230 on the side opposite to the coil assembly 300. Each of the third recesses 230 mates with a plurality of ninth magnetic parts 766. Specifically, each ninth magnetic part 766 is located within a third recess 230. The third recesses 230 serve to accommodate and fix the ninth magnetic parts 766, and also to limit the movement of the ninth magnetic parts 766, ensuring the proper fit between the magnetic structure 700 and the bracket 200. Furthermore, the location of the ninth magnetic parts 766 within the third recesses 230 reduces the fit between the bracket 200 and the magnetic structure 700 in the direction from the coil assembly 300 to the bracket 200, and also reduces the size of the ninth magnetic parts 766 protruding from the bracket 200. This prevents an increase in the internal space occupied by the ninth magnetic parts 766 in the direction from the coil assembly 300 to the bracket 200, and also prevents an increase in the thickness of the heating device 10.

[0210] In some embodiments, the coil assembly 300 may optionally be a flat plate structure.

[0211] In this embodiment, the shape of the coil assembly 300 is defined, making the coil assembly 300 a flat plate structure. This application rationally designs the structure of the coil assembly 300, enabling alternating magnetic field line cutting heating of both the bottom and sidewalls of the cookware 80. Both the bottom and sidewalls of the cookware 80 can be effectively heated. Simultaneously, it does not increase the internal space occupancy of the housing 100 in the direction from the coil assembly 300 to the support 200, thus avoiding increasing the thickness of the heating device 10 and maximizing the use of existing components of the heating device 10, thereby reducing the modification cost of the heating device 10.

[0212] In some embodiments, optionally, such as Figure 18 As shown, the bracket 200 is provided with a plurality of first winding slots 240, a plurality of second winding slots 250 and a plurality of third winding slots 260. The first coil segment 410 is provided in the plurality of first winding slots 240, the second coil section 500 is provided in the plurality of second winding slots 250 and the second coil segment 420 is provided in the plurality of third winding slots 260.

[0213] In this embodiment, the structure of the bracket 200 is further defined such that the bracket 200 is provided with a plurality of first winding grooves 240, a plurality of second winding grooves 250 and a plurality of third winding grooves 260. Specifically, the bracket 200 is provided with a plurality of first winding grooves 240, a plurality of second winding grooves 250 and a plurality of third winding grooves 260 on the side facing the cooktop panel 110.

[0214] A first coil segment 410 is disposed in multiple first winding slots 240, a second coil portion 500 is disposed in multiple second winding slots 250, and a second coil segment 420 is disposed in multiple third winding slots 260. The multiple first winding slots 240 serve to accommodate and fix the first coil segment 410. The multiple second winding slots 250 serve to accommodate and fix the second coil portion 500. The multiple third winding slots 260 serve to accommodate and fix the second coil segment 420. The multiple first winding slots 240, multiple second winding slots 250, and multiple third winding slots 260 cooperate to define the mating positions of the first coil portion 400 and the second coil portion 500, providing structural support to ensure the reliability of the magnetic field distribution.

[0215] In this application, the first coil portion 400 and the second coil portion 500 are located on the same bracket 200.

[0216] In some other embodiments, the first coil portion 400 and the second coil portion 500 are located on different supports 200.

[0217] For example, the present application has a reasonable structure for heating device 10, which can heat the cookware 80 located on the stove panel 110 in three dimensions.

[0218] The heating device 10 includes a bracket 200, which is an insulating frame, such as a plastic frame or a mica frame.

[0219] The support 200 has multiple winding areas, with at least two winding areas. The multiple winding areas include at least a main winding area and an auxiliary winding area. A first coil part 400 is located in the main winding area, and a second coil part 500 is located in the auxiliary winding area. The main winding area includes multiple first winding slots 240 and multiple third winding slots 260, and the auxiliary winding area includes multiple second winding slots 250.

[0220] The coil assembly 300 includes a first coil portion 400 and a second coil portion 500. The first coil portion 400 includes a first coil segment 410 and a second coil segment 420. The second coil portion 500 surrounds the periphery of the first coil segment 410, and the second coil segment 420 surrounds the periphery of the second coil portion 500.

[0221] The shape of the outer peripheral wall 414 of the first coil segment includes: circle, rectangle, ellipse, racetrack shape, polygon and star shape, etc., which will not be listed here.

[0222] The shape of the inner peripheral wall 510 of the second coil section includes: circle, rectangle, ellipse, racetrack shape, polygon and star shape, etc., which will not be listed here.

[0223] The shape of the outer peripheral wall 520 of the second coil section includes: circle, rectangle, ellipse, racetrack shape, polygon and star shape, etc., which will not be listed here.

[0224] The shape of the inner peripheral wall 422 of the second coil segment includes: circle, rectangle, ellipse, racetrack shape, polygon and star shape, etc., which will not be listed here.

[0225] The shape of the outer peripheral wall 424 of the second coil segment includes: circle, rectangle, ellipse, racetrack shape, polygon and star shape, etc., which will not be listed here.

[0226] The first coil segment 410 and the second coil portion 500 are separated by a magnetic structure 700, and the second coil portion 500 and the second coil segment 420 are separated by a magnetic structure 700.

[0227] A portion of the magnetic structure 700 is located on the side of the support 200 away from the coil assembly 300.

[0228] This application provides a reasonable structure for the heating device 10, which solves the problem of poor coupling of the outermost winding of the heating device in related technologies. At the same time, it can solve the problem of high stress on the circuit board components. For example, the circuit board components include power devices, which allows the heating device 10 to use lower-specification power devices, thereby reducing the production cost of the heating device 10.

[0229] The first coil section 400 and the second coil section 500 are electrically connected to the controller 600, which can realize multi-segment control. The alternating magnetic field lines can quickly cut the bottom of the curved pot 80, so that the bottom of the curved pot is heated by the alternating magnetic field lines, and both the bottom and the pot wall are heated, thus showing a three-dimensional heating effect and ensuring the uniformity of heating.

[0230] For example, the first coil portion 400 can be either loosely wound or tightly wound.

[0231] For example, the second coil portion 500 can be either loosely wound or tightly wound.

[0232] The first coil section 400 can have one or more winding layers.

[0233] The second coil section 500 can have one or more winding layers.

[0234] like Figure 2 As shown, the first coil segment 410 and the second coil segment 420 are connected in series via a winding 430. The second coil section 500 is located between the first coil segment 410 and the second coil segment 420.

[0235] Figure 11 and Figure 18 The arrows in the diagram indicate the direction of the magnetic field lines. Figure 11 It is understood that when the heating device 10 of this application is working, the alternating magnetic field lines will not be concentrated on the bottom of the pot 80, but will cut along the pot 80 directly above, so that the bottom and side walls of the pot 80 have magnetic field line cutting effect, so that heating can occur on the bottom and side walls of the pot 80, heating is uniform, and a three-dimensional heating effect can be achieved.

[0236] A cross-section is taken of the coil group 300 along a direction perpendicular to the direction from the coil group 300 to the support 200. In the cross-section, the cross-sectional area of ​​the first coil segment 410 is S1, the cross-sectional area of ​​the second coil segment 420 is S2, and the cross-sectional area of ​​the second coil section 500 is S3. The number of winding layers of the first coil segment 410 and the second coil segment 420 is n1, and the number of winding layers of the second coil section 500 is n2. Among these conditions, 0.75≤((S1+S2)×n1) / (S3×n2)≤1.25, n1≥1, and n2≥1. The optimal effect is achieved when the relationship between S1, S2, S3, n1, and n2 satisfies 0.9≤((S1+S2)×n1) / (S3×n2)≤1.11.

[0237] like Figure 14 As shown, a first magnetic stripe 710 is disposed between the first coil segment 410 and the second coil portion 500, and a second magnetic stripe 720 is disposed between the second coil portion 500 and the second coil segment 420. This arrangement prevents the first coil portion 400 and the second coil portion 500 from coupling and interfering with each other, thereby increasing system reliability.

[0238] The magnetic structure 700 includes multiple first U-shaped magnetic strips 740, multiple second U-shaped magnetic strips 750, and multiple third U-shaped magnetic strips 760. The third magnetic portion 746 of the first U-shaped magnetic strip 740 is located on the side of the support 200 away from the coil assembly 300; the sixth magnetic portion 756 of the second U-shaped magnetic strip 750 is located on the side of the support 200 away from the coil assembly 300; and the ninth magnetic portion 766 of the third U-shaped magnetic strip 760 is located on the side of the support 200 away from the coil assembly 300. The third magnetic portion 746, the sixth magnetic portion 756, and the ninth magnetic portion 766 enhance the inductance of the coil assembly 300 and prevent magnetic leakage from the back side.

[0239] For example, the first coil section 400 is the main winding section, and the second coil section 500 is the auxiliary winding section.

[0240] In this application, the term "multiple" refers to two or more unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" 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 application based on the specific circumstances.

[0241] 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 this application. 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. The above descriptions are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A heating device, characterized in that, include: A housing, the housing including a cooktop panel; The bracket is disposed within the housing; A coil assembly, located within the housing, is disposed on the side of the bracket facing the cooktop panel. The coil assembly includes: A first coil section, the first coil section including a first coil segment and a second coil segment, the first coil segment and the second coil segment being electrically connected; The second coil portion surrounds the periphery of the first coil segment, and the second coil segment surrounds the periphery of the second coil portion; A controller is located in the housing, and the first coil section and the second coil section are electrically connected to the controller respectively. The controller is used to control the operation of the first coil section and the second coil section.

2. The heating device according to claim 1, characterized in that, The shape of the inner peripheral wall of the second coil section is the same as the shape of the outer peripheral wall of the first coil section; and / or The shape of the outer peripheral wall of the second coil portion is the same as the shape of the inner peripheral wall of the second coil segment.

3. The heating device according to claim 1, characterized in that, The shape of the inner peripheral wall of the second coil portion is different from the shape of the outer peripheral wall of the first coil segment; and / or The shape of the outer peripheral wall of the second coil portion is different from the shape of the inner peripheral wall of the second coil segment.

4. The heating device according to any one of claims 1 to 3, characterized in that, A cross-section is taken of the coil group along a direction perpendicular to the direction from the coil group to the bracket. In the cross-section, the cross-sectional area of ​​the first coil segment is S1, the cross-sectional area of ​​the second coil segment is S2, and the cross-sectional area of ​​the second coil portion is S3. The number of winding layers in both the first coil segment and the second coil segment is n1, and the number of winding layers in the second coil segment is n2. Wherein, 0.75≤((S1+S2)×n1) / (S3×n2)≤1.25, n1≥1, n2≥1.

5. The heating device according to any one of claims 1 to 3, characterized in that, Along the direction from the first coil segment to the second coil segment, there is a gap between the first coil segment and the second coil portion, and a gap between the second coil portion and the second coil segment.

6. The heating device according to any one of claims 1 to 3, characterized in that, Also includes: A magnetic structure, the magnetic structure being at least used to separate the first coil segment and the second coil portion, and to separate the second coil portion and the second coil segment.

7. The heating device according to claim 6, characterized in that, The magnetic structure includes: A first magnetic strip, the first magnetic strip being wound between the outer peripheral wall of the first coil segment and the inner peripheral wall of the second coil portion; and / or A second magnetic strip, the second magnetic strip being wound between the outer peripheral wall of the second coil portion and the inner peripheral wall of the second coil segment; and / or A third magnetic strip surrounds the outer peripheral wall of the second coil segment.

8. The heating device according to claim 6, characterized in that, The magnetic structure includes: Multiple first U-shaped magnetic strips, each first U-shaped magnetic strip including a first magnetic part, a second magnetic part and a third magnetic part, the third magnetic part being connected between the first magnetic part and the second magnetic part, the first magnetic part being located between the first coil segment and the second coil segment, the second magnetic part being located between the second coil segment and the second coil segment, and the third magnetic part being located on the side of the bracket away from the coil group, the multiple first U-shaped magnetic strips being arranged at circumferential intervals along the first coil segment.

9. The heating device according to claim 8, characterized in that, The magnetic structure further includes: Multiple second U-shaped magnetic strips, each second U-shaped magnetic strip including a fourth magnetic part, a fifth magnetic part and a sixth magnetic part, the sixth magnetic part being connected between the fourth magnetic part and the fifth magnetic part, the fourth magnetic part being located between the second coil part and the second coil segment, the fifth magnetic part being located at the outer peripheral wall of the second coil segment, and the sixth magnetic part being located on the side of the bracket away from the coil group, the multiple second U-shaped magnetic strips being arranged at circumferential intervals along the first coil segment.

10. The heating device according to claim 9, characterized in that, The bracket has multiple first recesses on the side opposite to the coil assembly, and each of the third magnetic parts is located within one of the first recesses; and / or The bracket has a plurality of second recesses on the side opposite to the coil group, and each of the sixth magnetic parts is located in one of the second recesses.

11. The heating device according to claim 6, characterized in that, The bracket is provided with a mounting part, the first coil segment surrounds the periphery of the mounting part, and the magnetic structure is also used to separate the mounting part and the first coil segment.

12. The heating device according to claim 11, characterized in that, The magnetic structure includes: A fourth magnetic strip, which surrounds the outer peripheral wall of the mounting portion and the inner peripheral wall of the first coil segment; or Multiple third U-shaped magnetic strips, each comprising a seventh magnetic part, an eighth magnetic part, and a ninth magnetic part, wherein the ninth magnetic part is connected between the seventh and eighth magnetic parts, the seventh magnetic part is located between the mounting part and the first coil segment, the eighth magnetic part is located between the first coil segment and the second coil part, and the ninth magnetic part is located on the side of the bracket away from the coil group. The multiple third U-shaped magnetic strips are arranged at circumferential intervals along the mounting part.

13. The heating device according to claim 12, characterized in that, When the magnetic structure includes the third U-shaped magnetic strip, the bracket has a plurality of third recesses on the side away from the coil group, and each of the ninth magnetic parts is located in one of the third recesses.

14. The heating device according to any one of claims 1 to 3, characterized in that, The coil assembly has a flat plate structure.

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