Electromagnetic oven

Abstract

The utility model provides an induction cooker which comprises a coil panel and a bottom shell, the bottom shell comprises a shell body, a containing cavity used for installing the coil panel is defined, the bottom wall of the shell body comprises a coil panel placement area corresponding to the coil panel, and in the height direction of the bottom shell, the coil panel placement area protrudes from the interior of the containing cavity to the exterior of the containing cavity to form a concave space; and the inner surface of the concave space forms a cambered surface. According to the induction cooker, the concave space is formed in the coil panel placement area of the bottom shell, so that the space below the coil panel can be enlarged, more airflow is gathered below the coil panel, and the airflow flows through the concave space more smoothly, so that the heat of the coil panel is efficiently taken away, and the influence of the heat of the coil panel and other electronic components in the induction cooker is reduced.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and more particularly to an induction cooker. Background Technology

[0002] Induction cookers are common cooking appliances. Based on the principle of electromagnetic induction, they generate an alternating magnetic field through coil windings. When a pot with a ferromagnetic material is placed on the cooktop, the pot cuts through the alternating magnetic field lines, generating eddy currents in the metal part at the bottom of the pot, causing the pot to heat up and cook the food.

[0003] Currently, users are increasingly concerned about the sustained high-power heating performance of induction cookers when stir-frying or cooking hot pot. To meet this demand, the induction cooker's coil needs to be continuously heated at high power. This high-power continuous heating generates a large amount of heat. If this heat is not dissipated quickly, the internal temperature of the induction cooker will exceed the preset temperature protection point, forcing it to reduce its heating power and affecting the user's cooking experience. Furthermore, prolonged high temperatures also put a strain on the lifespan of electronic components, significantly reducing the induction cooker's lifespan. Utility Model Content

[0004] In view of the above problems, this application provides an induction cooker, which improves the heat dissipation effect of the coil by setting a recessed space on the bottom shell below the induction cooker coil, and the inner surface of the recessed space is arc-shaped.

[0005] This application provides an induction cooker, which includes a coil and a bottom shell. The bottom shell includes a shell body defining a receiving cavity for mounting the coil. The bottom wall of the shell body includes a coil mounting area corresponding to the coil. Along the height direction of the bottom shell, the coil mounting area protrudes from the inside of the receiving cavity toward the outside of the receiving cavity to form a recessed space. The inner surface of the recessed space is formed as an arc surface.

[0006] The induction cooker of this application has a recessed space formed in the coil placement area of ​​the bottom shell, which can increase the space under the coil. The inner surface of the recessed space is arc-shaped, which can reduce wind resistance and guide airflow to converge into the recessed space, so that more airflow converges under the coil, thereby efficiently removing the heat of the coil and reducing the impact of heat on the coil winding and other electronic components inside the induction cooker, thus extending the service life of the induction cooker. In addition, it can also enhance the heat dissipation effect on the coil placement area on the bottom wall, reduce the impact of heat on the bottom shell structure, and thus reduce the risk of bottom shell deformation.

[0007] In some embodiments, the bottom wall of the shell body is further provided with a plurality of mounting platforms, the plurality of mounting platforms being arranged around the recessed space, and the coil being fixed to the mounting platforms.

[0008] By setting up an installation platform, the height of the space below the coil can be further increased, making it easier for airflow to pass through the recessed space and efficiently remove heat from the coil.

[0009] In some embodiments, the inner surface of the coil disk placement area is provided with a plurality of reinforcing ribs.

[0010] By adding reinforcing ribs, the structural strength of the coil mounting area can be enhanced, reducing the risk of thermal deformation of the coil mounting area.

[0011] In some embodiments, the height of the mounting platform is higher than the height of the reinforcing rib, so that the coil disk is spaced apart from the reinforcing rib.

[0012] In this way, while ensuring the structural strength of the coil placement area, a gap can be maintained between the coil and the reinforcing rib to facilitate airflow and remove heat.

[0013] In some embodiments, the plurality of reinforcing ribs include a plurality of first reinforcing ribs extending along a first direction and a plurality of second reinforcing ribs extending along a second direction, wherein the first reinforcing ribs and the second reinforcing ribs are arranged alternately.

[0014] In this way, the first and second reinforcing ribs work together to improve the structural strength of the bottom shell.

[0015] In some embodiments, the coil disk placement area further includes an arc transition section and a support section, one end of the arc transition section being connected to the portion of the bottom wall located outside the coil disk placement area, and the other end of the arc transition section being connected to the support section, the arc transition section and the support section surrounding the recessed space.

[0016] Thus, when the bottom wall of the induction cooker deforms due to pressure from other components, structural stress, or thermal effects, the support section can abut against the mounting surface, limiting and preventing deformation and ensuring the structural stability of the bottom shell, thereby guaranteeing the installation accuracy of the internal components. Furthermore, the rounded transition section guides airflow to converge below the coil, enhancing heat dissipation and improving the aesthetics of the bottom shell. It is also easier to manufacture compared to systems without a rounded transition section.

[0017] In some embodiments, the bottom shell further includes: a support leg connected to the bottom wall of the shell body, the support leg being used to support the shell body off the placement table.

[0018] The feet allow for a certain distance between the main body of the induction cooker and the mounting surface, facilitating airflow into the cavity and preventing water or other impurities from the mounting surface from contacting or entering the bottom shell. Furthermore, the support section, in conjunction with the feet, provides continuous and stable support for the overall structure of the induction cooker.

[0019] In some embodiments, along the height direction of the bottom shell, the end of the support segment away from the shell body is flush with the end of the support leg away from the shell body.

[0020] In this way, the support section and the legs can work together to support the platform. The support section can support the area near the center of the shell (the coil winding is usually located in the area near the center of the shell), which can prevent the bottom wall of the shell from deforming. The legs can support the periphery of the shell. The support section and the legs work together to achieve stable support for the shell and ensure the structural reliability of the induction cooker.

[0021] In some embodiments, along the height direction of the bottom shell, the end of the support segment away from the shell body is higher than the end of the support leg away from the shell body, so that the support segment is spaced apart from the mounting surface.

[0022] In this way, when the legs are supported on the mounting platform, the support section is spaced apart from the platform. On the one hand, this provides a certain margin for deformation of the base shell. When the bottom wall of the base shell deforms to a certain extent, the support section comes into contact with the mounting platform, and under the constraint of the platform, the support section can prevent further deformation of the base shell, thus limiting the degree of deformation. Moreover, because the height of the support section is shortened, it does not need to be supported on the mounting platform simultaneously with the legs, which reduces the precision requirements for the support section, lowers the processing difficulty, and also helps save materials and reduce production costs.

[0023] In some embodiments, the diameter of the arc transition section is 150mm-220mm.

[0024] In this way, on the one hand, it avoids the support section being difficult to process and having poor strength and easy deformation when the diameter of the arc transition section is too small, such as less than 150mm; on the other hand, it avoids the impact on the size of the bottom shell when the diameter of the arc transition section is too large, such as greater than 220mm. Attached Figure Description

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

[0026] Figure 1 This is a schematic diagram of the structure of an induction cooker according to an embodiment of this application;

[0027] Figure 2 This is an exploded view of an induction cooker according to an embodiment of this application;

[0028] Figure 3 For along Figure 1 Sectional view of section AA;

[0029] Figure 4 This is a partial structural schematic diagram of an induction cooker according to an embodiment of this application;

[0030] Figure 5 This is a structural schematic diagram of the bottom shell at one angle according to an embodiment of this application;

[0031] Figure 6 This is a structural schematic diagram of the bottom shell from another angle according to an embodiment of this application;

[0032] Figure 7 This is a top view of the bottom shell according to an embodiment of this application;

[0033] Figure 8 This is a bottom view of the bottom shell of an embodiment of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100 - Bottom shell;

[0036] 1-Shell body; 11-Receiving cavity;

[0037] 12-Bottom wall; 121-Coil disc placement area; 122-Support section; 123-Recessed space; 124-Flow guiding structure; 1241-Flow guiding groove; 1242-Flow guiding ridge; 125-Circular transition section; 126-Step structure;

[0038] 13-Side panel;

[0039] 14-Strengthening rib; 141-First reinforcing rib; 142-Second reinforcing rib;

[0040] 15-Air inlet; 16-Air outlet; 17-Mounting platform; 18-Rack reinforcement;

[0041] 2-Feet;

[0042] 200 - Coil; 300 - Cooling fan; 400 - Top cover; 500 - Panel; 600 - Electrical control device;

[0043] 1000-Induction Cooker. Detailed Implementation

[0044] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0045] Induction cookers are common cooking appliances. Based on the principle of electromagnetic induction, they generate an alternating magnetic field through a coil winding. When a ferromagnetic pot is placed on the cooktop, the pot cuts through the alternating magnetic lines of force, generating an alternating current (eddy current) in the metal part of the pot's bottom, causing the pot to heat up and thus heating the food. Currently, users are increasingly concerned about the high-power, continuous heating performance of induction cookers for stir-frying, hot pot cooking, and other scenarios. To meet this demand, the coil of the induction cooker needs to be continuously heated at high power. This high-power continuous heating generates a large amount of heat. If this heat is not dissipated quickly, the internal temperature of the induction cooker will exceed the preset temperature protection point, forcing the cooker to reduce its heating power and affecting the user's cooking experience. Furthermore, prolonged high temperatures also put a strain on the lifespan of electronic components, significantly reducing the lifespan of the induction cooker.

[0046] In view of this, this application provides a bottom shell and an induction cooker. A support section is provided on the bottom wall of the bottom shell. When the bottom wall deforms due to factors such as pressure from other components, structural stress, or thermal effects, the support section can abut against the mounting surface, limiting and preventing deformation of the bottom shell, ensuring the structural stability of the bottom shell, and thus guaranteeing the installation accuracy of the internal components of the induction cooker. In addition, the support section, together with the support legs, can achieve continuous and stable support for the overall structure of the induction cooker.

[0047] First, combined Figures 1-8 The induction cooker 1000 of this embodiment may include components such as a coil 200, a bottom shell 100, an upper shell assembly, a cooling fan 300, and an electronic control device 600. The coil 200 may include a plate body and coil windings wound around the plate body. The plate body provides mounting support for the coil windings. Multiple coil windings may be wound around the plate body and may be distributed radially and / or circumferentially along the plate body. When energized, the coil windings generate an alternating magnetic field, causing the cookware within the magnetic field to heat up, thereby heating the food. The electronic control device 600 may include a circuit board, power harness, etc., and is used to switch the induction cooker 1000 on and off and adjust the heating. The cooling fan 300 drives airflow through the receiving cavity 11 to dissipate heat from the various components within the receiving cavity 11.

[0048] The bottom shell 100 defines a receiving cavity 11, which is used to support components such as the coil 200, the cooling fan 300, and the electronic control device 600. The top of the bottom shell 100 has an opening communicating with the receiving cavity 11. The opening is used to house the upper shell assembly of the induction cooker 1000. The upper shell assembly may include a top cover 400 and a panel 500. The top cover 400 is connected to the periphery of the opening of the bottom shell 100. The panel 500 may be a ceramic panel or other heat-resistant panel. The panel 500 is fixed to the top cover 400 and serves as a support surface for cookware. Considering the weight and cost of the induction cooker 1000, the bottom shell 100 may be made of plastic. Of course, the bottom shell 100 may also be made of other materials.

[0049] Combination Figures 3-8 The bottom shell 100 may include the shell body 1, the legs 2 and the support section 122.

[0050] The shell body 1 may include a bottom wall 12 and a side wall 13 surrounding the bottom wall 12, with the bottom end of the side wall 13 connected to the bottom wall 12, such that the bottom shell 100 and the side wall 13 together define a receiving cavity 11 with an opening at the top.

[0051] The support leg 2 is connected to the bottom wall 12 of the shell body 1. The support leg 2 is used to support the shell body 1 away from the placement table. The placement table can be the ground, tabletop or any other object surface suitable for placing the induction cooker 1000. The placement table can be a metal surface or a non-metal surface such as a glass surface, concrete surface, wooden structure surface, etc. This embodiment does not limit the material and type of the placement table.

[0052] The support leg 2 can be columnar, and there can be multiple support legs 2. These multiple support legs 2 can be distributed at intervals along the circumference of the bottom shell 100. For example, there can be four support legs 2, distributed in the four corner areas of the bottom shell 100. Alternatively, the support leg 2 can be rib-shaped, and in this case, the support leg 2 can extend along the circumference of the bottom shell 100. Of course, the support leg 2 can also be other shapes, and this embodiment does not limit this. The support leg 2 can be integrally formed with the shell body 1, or the support leg 2 and the shell body 1 can also be separate structures and connected by any connection method such as bolt connection, snap-fit, plug-in connection, or adhesive connection.

[0053] The support legs 2 can maintain a certain distance between the shell body 1 and the mounting platform, which facilitates air intake into the cavity 11 and also prevents water or other impurities on the mounting platform from contacting or entering the shell body 1.

[0054] The support section 122 is connected to the bottom wall 12 of the shell body 1. The support section 122 extends toward the mounting platform and protrudes from the lower surface of the bottom wall 12. The support section 122 and the coil winding are arranged opposite to each other along the height direction of the bottom shell 100, that is, the support section 122 is located below the coil winding.

[0055] Understandably, when the bottom wall 12 of the bottom shell 100 deforms due to factors such as pressure from other components, structural stress, or thermal effects, the support section 122 can abut against the mounting surface, limiting and preventing the deformation of the bottom shell 100, ensuring the structural stability of the bottom shell 100, and thus guaranteeing the installation accuracy of the internal components of the induction cooker 1000. Furthermore, the support section 122, in conjunction with the support legs 2, can provide continuous and stable support for the overall structure of the induction cooker 1000.

[0056] Optionally, the wall thickness of the support segment 122 is greater than the thickness of the area surrounding the support segment 122 in the shell body 1. It should be noted that when the support segment 122 is a solid structure, its wall thickness refers to the thickness along the height of the bottom shell 100. When the inner side of the support segment 122 is hollow, its wall thickness refers to the distance between the outer and inner surfaces of the support segment 122. This ensures that the structural strength of the support segment 122 is greater than that of the rest of the shell body 1, reducing the risk of deformation of the support segment 122 itself. This allows the support segment 122 to better maintain the structural stability of the area on the shell body 1 corresponding to the coil winding, reducing the risk of thermal deformation.

[0057] In some embodiments, along the height direction of the bottom shell 100, the end of the support segment 122 away from the shell body 1 (i.e., the bottom end of the support segment 122) and the end of the support leg 2 away from the shell body 1 (i.e., the bottom end of the support leg 2) are flush. In this way, the support segment 122 and the support leg 2 can jointly support the mounting surface. The support segment 122 can support the area near the middle of the shell body 1 (the coil winding is usually located in the area near the middle of the shell body 1), which can prevent the bottom wall 12 of the shell body 1 from deforming. The support leg 2 can support the periphery of the shell body 1. The support segment 122 and the support leg 2 cooperate with each other to achieve stable support for the shell body 1 and ensure the structural reliability of the induction cooker 1000.

[0058] refer to Figure 3 Considering that deformation of the base shell 100 may be difficult to completely avoid, if the bottom ends of the support section 122 and the support leg 2 are made flush, when the base shell 100 deforms, the bottom ends of the support section 122 and the support leg 2 may not be on the same plane, making it impossible to stably place the induction cooker 1000. Therefore, in some other embodiments, the support section 122 and the support leg 2 can be configured such that, along the height direction of the base shell 100, the end of the support section 122 away from the shell body 1 (i.e., the bottom end of the support section 122) is higher than the end of the support leg 2 away from the shell body 1 (i.e., the bottom end of the support leg 2).

[0059] Thus, when the support leg 2 is supported on the mounting platform, the support section 122 is spaced apart from the mounting platform. On the one hand, this provides a certain margin for deformation of the bottom shell 100. When the bottom wall 12 of the bottom shell 100 deforms to a certain extent, the support section 122 comes into contact with the mounting platform. Under the constraint of the mounting platform, the support section 122 can prevent the bottom shell 100 from deforming further, thereby limiting the degree of deformation of the bottom shell 100. Moreover, since the height of the support section 122 is shortened, the support section 122 does not need to be supported on the mounting platform simultaneously with the support leg 2. This reduces the requirements for the machining accuracy of the support section 122, reduces the machining difficulty, and also helps to save materials and reduce production costs.

[0060] In some embodiments, reference Figure 3 The height difference h between the end of the support section 122 furthest from the shell body 1 and the end of the support leg 2 furthest from the shell body 1 is 0.5mm-5mm. For example, the height difference h between the bottom end of the support section 122 and the bottom end of the support leg 2 can be 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4.5mm, or 5mm. Of course, this application does not limit this, and the height difference between the bottom end of the support section 122 and the bottom end of the support leg 2 can be flexibly selected within the above range according to actual needs. In this way, on the one hand, it is beneficial to avoid the reserved deformation margin being too small when the height difference is too small, such as less than 0.5mm, which would cause the bottom end of the support section 122 to exceed the bottom end of the support leg 2, resulting in the induction cooker 1000 being placed unstable and difficult to process and manufacture; on the other hand, it is beneficial to avoid the deformation of the bottom shell 100 being too large when the height difference is too large, such as greater than 5mm, which would reduce the installation accuracy of other internal components.

[0061] Optionally, there are multiple legs 2, and the support segment 122 is located at the center of the multiple legs 2.

[0062] In this way, the support section 122 can cooperate with multiple legs 2 to ensure that the area between the support section 122 and each leg 2 is subjected to uniform force, which is beneficial to ensuring the structural stability of the bottom shell 100.

[0063] In some embodiments, the support segment 122 and the shell body 1 are integrally formed; for example, the support segment 122 and the shell body 1 can be integrally injection molded. In this way, the support segment 122 can better distribute the internal stress of the bottom wall 12 of the bottom shell 100, thereby better supporting the bottom shell 100 and preventing deformation of the bottom shell 100. At the same time, it helps to simplify the manufacturing process of the bottom shell 100 and reduce production costs.

[0064] In some embodiments, reference Figure 4 , Figure 7 and Figure 8The bottom wall 12 of the shell body 1 may include a coil disk placement area 121, which corresponds to the coil disk 200. In other words, the coil disk placement area 121 is located directly below the coil winding. The coil disk placement area 121 may be circular and match the coil disk 200. Optionally, the diameter of the coil disk placement area 121 may be the same as or slightly larger than the diameter of the coil disk 200.

[0065] Optionally, combined Figure 3 The thickness of the coil mounting area 121 is greater than the thickness of the area of ​​the bottom wall 12 of the shell body 1 located outside the coil mounting area 121. This enhances the strength of the coil mounting area 121 and helps prevent deformation of the coil mounting area 121, which is most susceptible to heat deformation.

[0066] In some embodiments, reference Figure 3 , Figure 4 and Figure 7 Along the height direction of the bottom shell 100, the coil mounting area 121 includes a support section 122 protruding from the inside of the receiving cavity 11 toward the outside of the receiving cavity 11, and a recessed space 123 located inside the support section 122. In other words, in this embodiment, the support section 122 is formed by the simultaneous outward protrusion of both sides of the coil mounting area 121, such that the formed support section 122 surrounds the inner recessed space 123. Since the coil mounting area 121 is usually the part most susceptible to heat deformation, by making at least a part of the structure of the coil mounting area 121 protrude to form the support section 122, the support section 122 can be located directly below the coil 200. When the user places the induction cooker 1000 on an iron tabletop such as a stainless steel tabletop, even if the coil winding heats the stainless steel tabletop, the support section 122 can prevent the coil mounting area 121, which is most susceptible to heat deformation, from deforming.

[0067] Furthermore, the coil mounting area 121 is a raised structure on the outside of the receiving cavity 11, while it is a recessed structure (i.e., recessed space 123) inside the receiving cavity 11. This design helps to reduce the weight of the bottom shell 100 and increases the space below the coil 200, guiding airflow to converge into the recessed space 123. This allows more airflow to converge below the coil 200 and flows more smoothly through the recessed space, effectively removing heat from the coil and reducing the impact of heat on the coil and other electronic components inside the induction cooker, thus extending the lifespan of the induction cooker. In addition, it improves the heat dissipation effect of the coil mounting area 121 on the bottom wall 12, thereby reducing the heat impact on the bottom shell 100 and lowering the risk of deformation of the bottom shell 100.

[0068] In some embodiments, combined with Figure 3 and Figure 7The inner surface of the recessed space 123 is formed as an arc surface. For example, the inner surface of the recessed space 123 is a sphere. This can reduce the wind resistance of the inner surface of the recessed space 123 and facilitate the smoother flow of air through the recessed space 123 to dissipate heat for the coil disk 200 and the coil disk mounting area 121.

[0069] In some embodiments, reference Figure 6 The coil disk mounting area 121 also includes an arc transition section 125. The support section 122 is connected to the portion of the bottom wall 12 outside the coil disk mounting area 121 through the arc transition section 125. In other words, the connection between the side wall of the support section 122 and the portion of the bottom wall 12 outside the coil disk mounting area 121 forms the arc transition section 125. Understandably, the arc transition section 125 constitutes part of the cavity wall of the recessed space 123, and the support section 122 constitutes another part of the cavity wall of the recessed space 123. That is, the arc transition section 125 and the support section 122 together surround the recessed space 123. This arrangement can, on the one hand, increase the space below the coil disk 200, and the arc transition section 125 can guide airflow to converge below the coil disk 200, enhancing the heat dissipation effect on the coil disk 200; on the other hand, it can improve the aesthetic appearance of the bottom shell 100, and it is easier to manufacture than if the arc transition section 125 is not provided.

[0070] In some embodiments, reference Figure 6 The diameter d of the arc transition section 125 is 150mm-220mm. For example, the diameter d of the arc transition section 125 can be 150mm, 160mm, 170mm, 180mm, 190mm, 200mm, 210mm, or 220mm. Of course, this application does not impose any restrictions on this, and the diameter of the arc transition section 125 can be reasonably selected within the above range as needed. In this way, on the one hand, it avoids the support section 122 being difficult to process and having poor strength and easy deformation when the diameter of the arc transition section 125 is too small, such as less than 150mm; on the other hand, it avoids the impact on the dimensions of the bottom shell 100 when the diameter of the arc transition section 125 is too large, such as greater than 220mm.

[0071] In some embodiments, reference Figure 7 The inner surface of the coil mounting area 121 is provided with multiple reinforcing ribs 14. The reinforcing ribs 14 can enhance the structural strength of the coil mounting area 121 and reduce the risk of deformation of the coil mounting area 121.

[0072] In some embodiments, reference Figure 7The plurality of reinforcing ribs 14 includes at least a first reinforcing rib 141 and a second reinforcing rib 142. There are several first reinforcing ribs 141 extending along a first direction, and several second reinforcing ribs 142 extending along a second direction. The first reinforcing ribs 141 and the second reinforcing ribs 142 are arranged alternately. Thus, the first reinforcing ribs 141 and the second reinforcing ribs 142 cooperate with each other, thereby improving the structural strength of the bottom shell 100.

[0073] Optionally, the first direction can be the width direction of the bottom shell 100 (i.e., Figure 7 The first direction can be the X direction (or the first direction can be inclined relative to the width direction of the bottom shell 100); the second direction can be the length direction of the bottom shell 100 (i.e., the X direction in the middle of the shell). Figure 7 (in the Y direction), or, the second direction is inclined relative to the length direction of the bottom shell 100.

[0074] In some embodiments, reference Figure 7 The bottom wall 12 of the shell body 1 is also provided with multiple mounting platforms 17. The multiple mounting platforms 17 are arranged around the coil disk placement area 121 and adjacent to the outer periphery of the coil disk placement area 121. In other words, the multiple mounting platforms 17 are arranged around the recessed space 123. The coil disk 200 can be supported and fixed on the mounting platform 17. In this way, the height of the space below the coil disk 200 can be further increased, and the airflow can pass through the recessed space 123 more smoothly to dissipate heat for the coil disk 200 and the coil disk placement area 121, and reduce the risk of deformation of the bottom shell 100.

[0075] Optionally, the height of the mounting platform 17 can be higher than the height of the reinforcing rib 14. In this way, while ensuring the structural strength of the coil disk placement area 121, a gap can be maintained between the coil disk 200 and the reinforcing rib 14 to facilitate airflow and remove heat.

[0076] Optionally, the mounting platform 17 may be provided with a threaded hole extending vertically, and the coil disc 200 may be provided with a threaded mating hole. The mounting platform 17 and the coil disc 200 are connected by fasteners passing through the threaded hole and the threaded mating hole, thus making the installation of the coil disc 200 relatively simple.

[0077] In some embodiments, the cross-sectional shape of the support segment 122 is circular, and the cross-section is perpendicular to the height direction of the bottom shell 100. Thus, the structure of the support segment 122 is relatively simple and easy to process and manufacture.

[0078] In some embodiments, the diameter of the support section 122 gradually decreases along the height direction of the bottom shell 100 and away from the coil winding. This facilitates airflow inside the recessed space 123, while the structure of the support section 122 is relatively simple and easy to manufacture.

[0079] Optionally, the edge of the coil mounting area 121 protrudes towards the interior of the receiving cavity 11 relative to the bottom wall 12 region outside the coil mounting area 121, so as to form a stepped structure 126 at the connection between the coil mounting area 121 and the bottom wall 12 region outside the coil mounting area 121. In this way, compared with the edge of the coil mounting area 121 being a planar structure relative to the bottom wall 12 region outside the coil mounting area 121, it is beneficial to enhance the deformation resistance of the coil mounting area 121.

[0080] In some embodiments, reference Figure 7 and Figure 8 The coil disk mounting area 121 can have multiple airflow guiding structures 124, such as airflow guiding ribs, airflow guiding grooves 1241, etc. These multiple airflow guiding structures 124 are distributed circumferentially along the coil disk mounting area 121 and extend spirally along the height direction of the bottom shell 100. By providing the airflow guiding structures 124, the airflow below the coil disk 200 can be guided upwards in a spiral motion, enhancing the heat dissipation effect on the coil disk 200 and the coil disk mounting area 121 of the bottom shell 100, reducing the heat impact on the bottom shell 100, and thus reducing the risk of thermal deformation of the bottom shell 100.

[0081] In some embodiments, reference Figure 7 and Figure 8 Multiple airflow guiding structures 124 are formed on the sidewall of the recessed space 123. Since the recessed space 123 is located below the coil disk 200, the inner surface of the recessed space 123 is the inner surface of the arc transition section 125. The recessed space 123 has a large space and can gather more airflow. The airflow guiding structures 124 are set on the sidewall of the recessed space 123, which can guide the airflow in the recessed space 123 to spiral upward, enhance the heat dissipation effect on the coil disk 200, and reduce the risk of the bottom shell 100 being deformed by heat.

[0082] In some embodiments, reference Figure 7 The flow guiding structure 124 includes a flow guiding groove 1241 located on the inner surface of the recessed space 123, that is, the flow guiding structure 124 can be formed by the outward recess of the inner surface of the recessed space 123. In this way, the flow guiding structure 124 has a relatively simple construction, is easy to manufacture, and can guide the airflow well.

[0083] In some embodiments, reference Figure 8 The flow guiding structure 124 also includes flow guiding ridges 1242 located on the outer surface of the recessed space 123. For example, the cavity wall of the recessed space 123 can bulge outward as a whole to form a flow guiding groove 1241 on the inner surface and a flow guiding ridge 1242 on the outer surface. By forming the flow guiding ridges 1242, the appearance of the bottom shell 100 can be improved.

[0084] In some embodiments, the area of ​​the housing body 1 other than the coil placement area 121 is provided with an air inlet 15 and an air outlet 16. A recessed space 123 communicates with both the air inlet 15 and the air outlet 16. A cooling fan 300 drives airflow from the air inlet 15 through the recessed space 123 to the air outlet 16. For example, the air inlet 15 can be located on the bottom wall 12 of the housing body 1, around the coil placement area 121, while the air outlet 16 is located on the side wall 13 of the housing body 1; or, the air outlet 16 can be located on the bottom wall 12 of the housing body 1, around the coil placement area 121, while the air inlet 15 is located on the side wall 13 of the housing body 1. The location of the cooling fan 300 within the receiving cavity 11 is not specifically limited. Thus, a complete heat dissipation channel is formed inside the bottom shell 100, thereby dissipating heat from the coil 200 and reducing the impact of heat on the structure of the bottom shell 100.

[0085] In some embodiments, reference Figure 7 The coil disk placement area 121 is surrounded by a surrounding rib 18. The surrounding rib 18 extends circumferentially along the coil disk placement area 121 to form an arc segment. By setting the surrounding rib 18, it can be ensured that the airflow discharged from the cooling fan 300 must pass through the coil disk placement area 121 before spreading to the surrounding area, thereby ensuring the heat dissipation effect on the coil disk 200 and the coil disk placement area 121.

[0086] In some embodiments, the bottom shell 100 may further include a heat-resistant layer disposed at the bottom end of the support section 122. The heat-resistant layer is made of a flame-retardant and non-deformable material, so as to prevent the bottom end of the support section 122 from melting when it comes into contact with a high-temperature tabletop, thereby ensuring the structural stability of the support section 122 itself.

[0087] Optionally, the heat-resistant layer and the support section 122 can be an integral structure to ensure the connection stability of the heat-resistant layer and the support section 122.

[0088] Alternatively, the heat-resistant layer and the support section 122 can be separate structures, connected by any method such as bolting, snap-fitting, plugging, or adhesive bonding. This facilitates the maintenance and replacement of the heat-resistant layer.

[0089] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0090] It should be noted that the embodiments referred to in the specification, such as "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments," may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0091] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0092] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An electromagnetic cooker comprising a coil pan and a bottom case, characterized in that, The bottom shell comprises a shell body defining a receiving cavity for mounting the coil plate, a bottom wall of the shell body comprising a coil plate placement area corresponding to the coil plate, the coil plate placement area protruding from inside the receiving cavity towards outside of the receiving cavity in the height direction of the bottom shell to form a recessed space, an inner surface of the recessed space being formed as a curved surface.

2. The electromagnetic stove according to claim 1, characterized in that, The bottom wall of the shell body is further provided with a plurality of mounting platforms, the plurality of mounting platforms being arranged around the recessed space, and the coil plate being fixed to the mounting platforms.

3. The electromagnetic stove according to claim 2, characterized in that, The coil plate placement area is provided with a plurality of reinforcing ribs, at least part of the reinforcing ribs passing through the inner surface of the recessed space.

4. The electromagnetic stove according to claim 3, characterized in that, The height of the mounting platforms is higher than the height of the reinforcing ribs, so that the coil plate is spaced apart from the reinforcing ribs.

5. The electromagnetic stove according to claim 3, characterized in that, The plurality of reinforcing ribs comprises a plurality of first reinforcing ribs extending in a first direction and a plurality of second reinforcing ribs extending in a second direction. The first reinforcing ribs and the second reinforcing ribs are arranged alternately.

6. The electromagnetic stove according to any one of claims 1-5, characterized in that, The coil plate placement area comprises a circular arc transition section and a support section, one end of the circular arc transition section being connected to a portion of the bottom wall outside the coil plate placement area, the other end of the circular arc transition section being connected to the support section, and the circular arc transition section and the support section surrounding the recessed space.

7. The electromagnetic stove according to claim 6, characterized in that, The bottom shell further comprises a support leg connected to the bottom wall of the shell body, the support leg being used to support the shell body away from the mounting platform surface.

8. The electromagnetic stove according to claim 7, characterized in that, In the height direction of the bottom shell, one end of the support section away from the shell body is flush with one end of the support leg away from the shell body.

9. The electromagnetic stove according to claim 7, characterized in that, In the height direction of the bottom shell, one end of the support section away from the shell body is higher than one end of the support leg away from the shell body, so that the support section is spaced apart from the mounting platform surface.

10. The electromagnetic stove according to claim 6, characterized in that, The diameter of the circular arc transition section is 150 mm-220 mm.

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