Electromagnetic oven

Abstract

The utility model provides an induction cooker. The induction cooker comprises a coil winding, the bottom shell comprises a shell main body, the shell main body defines a containing cavity used for installing the coil winding, the bottom wall of the shell main body comprises a coil panel placement area corresponding to the coil winding, and a plurality of diversion structures are formed in the coil panel placement area; the plurality of diversion structures are distributed at intervals along the circumferential direction of the coil panel placement area, and the diversion structures extend spirally. According to the induction cooker, the diversion structure is arranged on the bottom shell, so that the heat dissipation effect on the coil panel is improved, the influence of heat on the coil panel and other electronic components in the induction cooker is reduced, and the service life of the induction cooker is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to an induction cooker. BACKGROUND

[0002] The induction cooker is a common cooking appliance. Based on the principle of electromagnetic induction, an alternating magnetic field is generated through the coil winding. When the bottom of a pot made of ferromagnetic material is placed on the cooker, the pot cuts the alternating magnetic force lines and generates an alternating current (i.e. eddy current) in the metal part of the pot bottom, so that the pot self-heats to heat food.

[0003] At present, users pay more and more attention to the high-power continuous heating performance of the induction cooker in the scenarios of cooking with the induction cooker and hot pot cooking. In order to meet this demand, the induction cooker coil disc needs to be continuously heated at high power. When continuously heated at high power, the coil disc generates a large amount of heat. If the heat is not dissipated as soon as possible, the internal temperature of the induction cooker will exceed the preset temperature protection point, causing the induction cooker to forcibly reduce the heating power, which affects the user's cooking experience. In addition, long-term high temperature also tests the service life of electronic components, greatly reducing the service life of the induction cooker. CONTENT OF THE INVENTION

[0004] In view of the above problems, the present application provides an induction cooker which improves the heat dissipation effect of the coil disc by providing a flow guide structure on the bottom shell.

[0005] The present application provides an induction cooker, which includes a coil disc and a bottom shell. The bottom shell includes a shell main body which defines a receiving cavity for mounting the coil disc. The bottom wall of the shell main body includes a coil disc placement area corresponding to the coil winding. The coil disc placement area is formed with a plurality of flow guide structures. The plurality of flow guide structures are spaced apart along the circumferential direction of the coil disc placement area. The flow guide structures extend spirally.

[0006] The induction cooker of the present application can improve the heat dissipation effect of the coil disc by providing a flow guide structure in the coil disc placement area of the bottom shell, reduce the influence of heat on the coil winding of the coil disc and other electronic components inside the induction cooker, prolong the service life of the induction cooker, and additionally, can enhance the heat dissipation effect of the coil disc placement area on the bottom wall of the shell main body, reduce the influence of heat on the structure of the bottom shell, thereby reducing the risk of deformation of the bottom shell.

[0007] In some embodiments, along the height direction of the bottom shell, the coil disc placement area protrudes from the inside of the receiving cavity towards the outside of the receiving cavity to form a recessed space. The plurality of flow guide structures are formed on the side wall of the recessed space.

[0008] Since the recessed space is below the coil disc, the inner surface of the recessed space, that is, the inner surface of the circular arc transition section, and the space of the recessed space is relatively large, more airflow can be collected, and the flow guide structure is arranged on the inner wall of the recessed space, which can guide the airflow in the recessed space to spiral upward, enhance the heat dissipation effect of the coil disc, and reduce the risk of deformation of the bottom shell due to heat.

[0009] In some embodiments, the flow guide structure comprises a flow guide groove on the inner surface of the recessed space.

[0010] In this way, the flow guide structure is simple in structure, easy to manufacture, and can guide the airflow flow better.

[0011] In some embodiments, the flow guide structure further comprises a flow guide convex pattern on the outer surface of the recessed space.

[0012] By forming the flow guide convex pattern, the appearance of the bottom shell can be improved.

[0013] In some embodiments, the electromagnetic oven further comprises a heat dissipation fan, a region of the shell body except the coil disc placement area is provided with an air inlet hole and an air outlet hole, the recessed space is in communication with the air inlet hole and the air outlet hole respectively, and the heat dissipation fan is used to drive airflow to flow from the air inlet hole to the air outlet hole through the recessed space.

[0014] In this way, a complete heat dissipation flow channel is formed in the bottom shell, thereby dissipating heat for the coil disc and reducing the structural influence of heat on the bottom shell.

[0015] In some embodiments, the bottom shell further comprises a support leg connected with the bottom wall of the shell body, and the support leg is used to support the shell body away from the placement table top.

[0016] The support leg can keep the shell body at a certain distance from the placement table top, facilitate air inlet in the accommodating cavity, and prevent water or other impurities on the placement table top from contacting or entering the shell body.

[0017] In some embodiments, the coil disc placement area further comprises a circular arc transition section and a support section, one end of the circular arc transition section is connected with a portion of the bottom wall outside the coil disc placement area, the other end of the circular arc transition section is connected with the support section, and the circular arc transition section and the support section surround the recessed space.

[0018] Therefore, when the bottom wall of the bottom shell is deformed due to pressure of other components, self-structural stress, or thermal influence, etc., the support section can abut against the placement platform to limit and prevent deformation of the bottom shell, ensure structural stability of the bottom shell, and thus ensure installation accuracy of internal components of the induction cooker. The circular arc transition section can guide airflow to converge below the coil disc, enhance heat dissipation effect of the coil disc, and improve appearance aesthetics of the bottom shell. Compared with the case without the circular arc transition section, the circular arc transition section is easier to manufacture.

[0019] In some embodiments, along the height direction of the bottom shell, the end of the support section away from the shell body is higher than the end of the leg away from the shell body, so that the support section is spaced apart from the placement platform.

[0020] In this way, when the leg is supported on the placement platform, the support section is spaced apart from the placement platform. On the one hand, a certain amount of deformation of the bottom shell is provided, and when the bottom wall of the bottom shell is deformed to a certain extent, the support section abuts against the placement platform, and under the limiting of the placement platform, the support section can prevent the bottom shell from being further deformed, thereby limiting the deformation degree of the bottom shell. Moreover, since the height of the support section is shortened, the support section does not need to be supported on the placement platform at the same time as the leg, which can reduce the requirement for processing accuracy of the support section, reduce the processing difficulty, and also help to save materials and reduce production costs.

[0021] In some embodiments, the height difference between the end of the support section away from the shell body and the end of the leg away from the shell body is 0.5mm-5mm.

[0022] In this way, on the one hand, it is beneficial to avoid that the height difference is too small, for example, less than 0.5mm, and the deformation allowance is too small, causing the bottom end of the support section to exceed the bottom end of the leg, resulting in unstable placement of the induction cooker, and the manufacturing difficulty is great. On the other hand, it is beneficial to avoid that the height difference is too large, for example, greater than 5mm, causing the deformation amount of the bottom shell to be too large, and reducing the installation accuracy of other internal components.

[0023] In some embodiments, the inner surface of the coil disc placement area is provided with a plurality of reinforcing ribs.

[0024] By providing the reinforcing ribs, the reinforcing ribs can enhance the structural strength of the coil disc placement area and reduce the risk of deformation of the coil disc placement area. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0026] Figure 1 Figure 1 is a structural schematic diagram of an electromagnetic oven according to an embodiment of the present application;

[0027] Figure 2 Figure 2 is an exploded view of the electromagnetic oven according to the embodiment of the present application;

[0028] Figure 3 Figure 3 is a sectional view along the A-A section of the electromagnetic oven according to the embodiment of the present application; Figure 1

[0029] Figure 4 Figure 4 is a partial structural schematic diagram of the electromagnetic oven according to the embodiment of the present application;

[0030] Figure 5 Figure 5 is a structural schematic diagram of one corner of the bottom shell according to the embodiment of the present application;

[0031] Figure 6 Figure 6 is a structural schematic diagram of another corner of the bottom shell according to the embodiment of the present application;

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

[0033] Figure 8 Figure 8 is a bottom view of the bottom shell according to the embodiment of the present application.

[0034] BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 100 - bottom shell;

[0036] 1 - shell body; 11 - accommodating cavity;

[0037] 12 - bottom wall; 121 - coil disc arrangement area; 122 - support section; 123 - recessed space; 124 - flow guide structure; 1241 - flow guide groove; 1242 - flow guide ridge; 125 - circular arc transition section; 126 - step structure;

[0038] 13 - side wall;

[0039] 14 - reinforcing rib; 141 - first reinforcing rib; 142 - second reinforcing rib;

[0040] 15 - air inlet hole; 16 - air outlet hole; 17 - mounting table; 18 - surrounding rib;

[0041] 2 - supporting leg;

[0042] 200 - coil disc; 300 - heat dissipation fan; 400 - top cover; 500 - panel; 600 - electric control device;

[0043] 1000 - electromagnetic oven. DETAILED DESCRIPTION

[0044] ​In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0045] The electromagnetic oven is a common cooking appliance. Based on the principle of electromagnetic induction, an alternating magnetic field is generated by the coil winding. When the bottom of the pot made of ferromagnetic material is placed on the oven surface, the pot cuts the alternating magnetic force line and generates an alternating current (i.e. eddy current) in the metal part of the pot bottom, so that the pot self-heats to heat the food. At present, users pay more and more attention to the high-power continuous heating performance of the electromagnetic oven in the scenes of cooking with the electromagnetic oven and hot pot cooking. In order to meet this demand, the coil disc of the electromagnetic oven needs to be continuously heated at high power. When continuously heated at high power, the coil disc generates a large amount of heat. If the heat is not dissipated as soon as possible, the internal temperature of the electromagnetic oven will exceed the preset temperature protection point, so that the electromagnetic oven is forced to reduce the heating power, affecting the user's cooking experience. In addition, the long-term high temperature also tests the service life of electronic components, greatly reducing the service life of the electromagnetic oven.

[0046] Therefore, the present application provides a bottom shell and an electromagnetic oven. A support section is arranged on the bottom wall of the bottom shell. When the bottom wall is deformed due to factors such as pressure of other components, self-structural stress or thermal influence, the support section can abut against the installation table to limit and prevent deformation of the bottom shell, ensure the structural stability of the bottom shell, and thus ensure the installation accuracy of the internal components of the electromagnetic oven. In addition, the support section cooperates with the supporting leg to continuously and stably support the overall structure of the electromagnetic oven.

[0047] First, in combination with Figures 1-8 The electromagnetic oven 1000 of the present embodiment can include a coil disc 200, a bottom shell 100, an upper shell assembly, a cooling fan 300, an electric control device 600 and the like. The coil disc 200 can include a disc body and a coil winding wound on the coil disc 200. The disc body is used to provide installation support for the coil winding. The coil winding is wound on the disc body. The coil winding can be multiple groups. The multiple groups of coil windings can be distributed along the radial direction and / or the circumferential direction of the disc body. The coil winding generates an alternating magnetic field after being connected to electricity, so that the pot in the magnetic field generates heat, and then heats the food. The electric control device 600 can include a circuit board, a power line bundle and the like, and is used to realize the switching and heating adjustment of the electromagnetic oven 1000. The cooling fan 300 can drive airflow to flow through the containing cavity 11 to dissipate heat for each component in the containing cavity 11.

[0048] The bottom shell 100 can define a receiving cavity 11 for accommodating components such as the coil panel 200, the heat dissipation fan 300, the electric control device 600, etc. The top of the bottom shell 100 has an opening in communication with the receiving cavity 11, and the opening is configured to be provided with an upper shell assembly of the induction cooker 1000. The upper shell assembly can include a top cover 400 and a panel 500. The top cover 400 is connected with the periphery of the opening of the bottom shell 100. The panel 500 can be a ceramic panel or other heat-resistant panel. The panel 500 is fixed to the top cover 400 and serves as a bearing surface for a pot. In consideration of the weight and cost of the induction cooker 1000, the bottom shell 100 can be made of plastic. Of course, the bottom shell 100 can also be made of other materials.

[0049] In combination Figures 3-8 The bottom shell 100 can include a shell body 1, a leg 2, and a support section 122.

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

[0051] The leg 2 is connected with the bottom wall 12 of the shell body 1 and is configured to support the shell body 1 on a placement surface. The placement surface can be a ground, a table top, or any other object surface suitable for placing the induction cooker 1000. The placement surface can be a metal surface or a non-metal surface such as a glass surface, a concrete surface, a wooden structure surface, etc. The material and type of the placement surface are not limited in the present embodiment.

[0052] The leg 2 can be columnar. In this case, the leg 2 can be a plurality of legs 2, which can be distributed at intervals along the periphery of the bottom shell 100. For example, the leg 2 can be four legs 2 and be distributed at four corner regions of the bottom shell 100. Alternatively, the leg 2 can be a strip, which can extend along the periphery of the bottom shell 100. Of course, the leg 2 can also have other shapes, which are not limited in the present embodiment. The leg 2 can be integrally formed with the shell body 1, or the leg 2 and the shell body 1 can be a split structure and be connected by any connection mode such as bolting, clamping, inserting, or gluing.

[0053] The leg 2 can keep the shell body 1 at a certain distance from the placement surface, which facilitates air intake into the receiving cavity 11 and prevents water or other impurities on the placement surface from contacting or entering the bottom shell 100.

[0054] The support section 122 is connected to the bottom wall 12 of the shell body 1, extends towards the placement table, and protrudes from the lower surface of the bottom wall 12. The support section 122 is arranged opposite the coil winding along the height direction of the bottom shell 100, i.e., the support section 122 is located below the coil winding. The wall thickness of the support section 122 is greater than the thickness of the region of the shell body 1 surrounding the support section 122. It should be noted that when the support section 122 is a solid structure, the wall thickness of the support section 122 refers to the thickness of the support section 122 along the height direction of the bottom shell 100. When the inner side of the support section 122 is a hollow structure, the wall thickness of the support section 122 refers to the distance between the outer surface and the inner surface of the support section 122. In this way, the structural strength of the support section 122 can be ensured to be greater than that of the rest of the shell body 1, thereby reducing the risk of deformation of the support section 122 itself, and thus enabling the support section 122 to better maintain the structural stability of the region of the shell body 1 corresponding to the coil winding, and reducing the risk of thermal deformation.

[0055] It can be understood that when the bottom wall 12 of the bottom shell 100 is deformed due to factors such as pressure from other components, structural stress, or thermal effects, the support section 122 can abut against the placement table to limit and prevent deformation of the bottom shell 100, thereby ensuring the structural stability of the bottom shell 100 and the installation accuracy of the internal components of the induction cooker 1000. In addition, the support section 122 cooperates with the supporting leg 2 to continuously and stably support the overall structure of the induction cooker 1000.

[0056] In some embodiments, along the height direction of the bottom 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 flush with the end of the supporting leg 2 away from the shell body 1 (i.e., the bottom end of the supporting leg 2). In this way, the support section 122 and the supporting leg 2 can be jointly supported on the placement table. The support section 122 can support the region of the shell body 1 near the middle (where the coil winding is usually located), thereby preventing deformation of the bottom wall 12 of the shell body 1. The supporting leg 2 can support the circumferential side of the shell body 1. The support section 122 and the supporting leg 2 cooperate with each other to stably support the shell body 1 and ensure the structural reliability of the induction cooker 1000.

[0057] Reference Figure 3 It should be noted that the deformation of the bottom shell 100 can be difficult to completely avoid. If the bottom end of the support section 122 and the bottom end of the supporting leg 2 are arranged to be flush, when the bottom shell 100 deforms, the bottom ends of the support section 122 and the supporting leg 2 can not be on the same plane, and the induction cooker 1000 cannot be stably placed. Therefore, in other embodiments, the support section 122 and the supporting leg 2 can be arranged such that, along the height direction of the bottom 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 supporting leg 2 away from the shell body 1 (i.e., the bottom end of the supporting leg 2).

[0058] In this way, when the foot 2 is supported on the placement table, the support section 122 is spaced apart from the placement table. On the one hand, a certain amount of deformation of the bottom shell 100 is provided, and when a certain degree of deformation of the bottom wall 12 of the bottom shell 100 occurs, the support section 122 is in abutting contact with the placement table, and under the limiting of the placement table, the support section 122 can prevent the bottom shell 100 from further deforming, 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 placement table at the same time as the foot 2, which can reduce the requirement for the machining precision of the support section 122, reduce the machining difficulty, and also be beneficial to saving materials and reducing production costs.

[0059] In some embodiments, with reference to Figure 3 , the height difference h between the end of the support section 122 away from the shell body 1 and the end of the foot 2 away 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 foot 2 can be 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4.5mm or 5mm, of course, the present application does not limit this, the height difference between the bottom end of the support section 122 and the bottom end of the foot 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 that the height difference is too small, for example, less than 0.5mm, which causes the reserved deformation allowance to be too small, resulting in the bottom end of the support section 122 exceeding the bottom end of the foot 2, causing the electromagnetic oven 1000 to be placed unstably, and the machining and manufacturing difficulty is large; on the other hand, it is beneficial to avoid that the height difference is too large, for example, greater than 5mm, which causes the deformation amount of the bottom shell 100 to be too large, causing the installation precision of other internal components to be reduced.

[0060] Optionally, the foot 2 is a plurality of, and the support section 122 is located at the central position of the plurality of feet 2,

[0061] In this way, the support section 122 can cooperate with the plurality of feet 2 respectively, ensuring that the area between the support section 122 and each foot 2 is uniformly stressed, which is beneficial to guarantee the structural stability of the bottom shell 100.

[0062] In some embodiments, the support section 122 and the shell body 1 are an integral structure, for example, the support section 122 and the shell body 1 can be integrally injection molded. In this way, the support section 122 can better share the internal stress of the bottom wall 12 of the bottom shell 100, thereby better supporting the bottom shell 100 and preventing the deformation of the bottom shell 100. At the same time, it is beneficial to simplify the manufacturing process of the bottom shell 100 and reduce the production cost.

[0063] In some embodiments, with reference to Figure 4 , Figure 7 and Figure 8The bottom wall 12 of the shell body 1 can comprise a coil disc placement area 121 corresponding to the coil winding, in other words, the coil disc placement area 121 is directly below the coil winding. The coil disc placement area 121 can be circular to match the coil disc 200, and optionally, the diameter of the coil disc placement area 121 can be the same as or slightly larger than the disc body diameter of the coil disc 200.

[0064] Optionally, in combination with Figure 3 The thickness of the coil disc placement area 121 is greater than the thickness of the area of the bottom wall 12 of the shell body 1 outside the coil disc placement area 121. In this way, the strength of the coil disc placement area 121 can be enhanced, which is beneficial to prevent the coil disc placement area 121 that is most susceptible to heat deformation from deforming.

[0065] In some embodiments, referring to Figure 3 、 Figure 4 and Figure 7 , along the height direction of the bottom shell 100, the coil disc placement area 121 comprises a support section 122 protruding from the inside of the containing cavity 11 towards the outside of the containing cavity 11, and a recessed space 123 inside the support section 122. In other words, the support section 122 in this embodiment is formed by the two side surfaces of the coil disc placement area 121 simultaneously protruding outwards, so that the coil disc placement area 121 is a protruding structure outside the containing cavity 11, and a groove structure (i.e. the recessed space 123) inside the containing cavity 11, which is beneficial to reduce the weight of the bottom shell 100, and can increase the space below the coil disc 200, guide the airflow to converge below the coil disc 200, and enhance the heat dissipation effect of the coil disc 200 and the coil disc placement area 121 on the bottom wall 12, thereby reducing the heat impact on the bottom shell 100 and reducing the risk of deformation of the bottom shell 100.

[0066] Since the coil disc placement area 121 is usually the part most susceptible to heat deformation, by making at least part of the structure of the coil disc placement area 121 protrude outwards to form the support section 122, the support section 122 can be located directly below the coil disc 200, and even if the coil winding heats the stainless steel table top when the electromagnetic induction cooker 1000 is placed on the iron table top such as the stainless steel table top, the support section 122 can prevent the coil disc placement area 121 that is most susceptible to heat deformation from deforming.

[0067] Optionally, the edge of the coil disc placement area 121 protrudes towards the inside of the containing cavity 11 relative to the area of the bottom wall 12 outside the coil disc placement area 121, to form a stepped structure 126 at the junction of the coil disc placement area 121 and the area of the bottom wall 12 outside the coil disc placement area 121, so that compared to the edge of the coil disc placement area 121 being a planar structure relative to the area of the bottom wall 12 outside the coil disc placement area 121, the anti-deformation ability of the coil disc placement area 121 can be enhanced.

[0068] In some embodiments, combined with Figure 3 and Figure 7 The 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 In addition to the aforementioned support section 122, 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 located outside the coil disk mounting area 121 via 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 located 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, on the one hand, can 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 is easier to manufacture compared to not having the arc transition section 125.

[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 at least includes a first reinforcing rib 141 and a second reinforcing rib 142. The first reinforcing rib 141 is in a plurality, and the first reinforcing rib 141 extends along a first direction. The second reinforcing rib 142 is in a plurality, and the second reinforcing rib 142 extends along a second direction. The first reinforcing rib 141 and the second reinforcing rib 142 are arranged in a staggered manner. In this way, the first reinforcing rib 141 and the second reinforcing rib 142 cooperate with each other to improve the structural strength of the bottom shell 100.

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

[0074] In some embodiments, referring to Figure 7 , the bottom wall 12 of the shell body 1 is further provided with a plurality of mounting platforms 17. The plurality of mounting platforms 17 are arranged around the coil disc placement area 121 and adjacent to the outer periphery of the coil disc placement area 121, in other words, the plurality of mounting platforms 17 are arranged around the recessed space 123. The height of the mounting platform 17 is higher than the height of the reinforcing rib 14. The coil disc 200 can be supported and fixed on the mounting platform 17. In this way, the height of the space below the coil disc 200 can be further increased, and the airflow can flow more smoothly through the recessed space 123 to dissipate heat for the coil disc 200 and the coil disc placement area 121, thereby reducing the risk of deformation of the bottom shell 100.

[0075] Optionally, the mounting platform 17 can be provided with a threaded hole extending in the vertical direction, and the disc body of the coil disc 200 can be provided with a threaded matching hole. The mounting platform 17 and the disc body of the coil disc 200 are connected by a fastener passing through the threaded hole and the threaded matching hole. In this way, the mounting method of the coil disc 200 is relatively simple.

[0076] In some embodiments, the cross-sectional shape of the support section 122 is circular, and the cross-section is perpendicular to the height direction of the bottom shell 100. In this way, the structure of the support section 122 is relatively simple, which is convenient for processing and manufacturing.

[0077] In some embodiments, the diameter of the support section 122 gradually decreases in the height direction of the bottom shell 100 and away from the coil winding. In this way, it is beneficial for the airflow inside the recessed space 123 to flow, and at the same time, the structure of the support section 122 is relatively simple, which is convenient for processing and manufacturing.

[0078] In some embodiments, referring to Figure 7 and Figure 8The coil disc placement area 121 can be formed with a plurality of flow guide structures 124, for example, the flow guide structures 124 can be flow guide protrusions, flow guide grooves 1241 or the like. The plurality of flow guide structures 124 are distributed along the circumference of the coil disc placement area 121. By arranging the flow guide structures 124, the wind below the coil disc 200 can be guided to spiral upward, enhancing the heat dissipation effect of the coil disc 200 and the coil disc placement area 121 of the bottom shell 100, reducing the heat impact on the bottom shell 100, thereby reducing the risk of deformation of the bottom shell 100 due to heat.

[0079] In some embodiments, with reference to Figure 7 and Figure 8 The plurality of flow guide structures 124 are formed on the side wall of the recessed space 123. Since the recessed space 123 is below the coil disc 200, the space of the recessed space 123 is large and can collect more air flow. The flow guide structures 124 are arranged on the side wall of the recessed space 123, so that the flow guide structures 124 can extend spirally along the height direction of the bottom shell 100, guiding the air flow in the recessed space 123 to spiral upward, thereby efficiently taking away the heat of the coil disc 200, reducing the impact of the heat on the coil disc 200 and other electronic components inside the induction cooker 1000, prolonging the service life of the induction cooker 1000. In addition, the heat dissipation effect of the coil disc placement area 121 on the bottom wall of the shell main body 1 can be enhanced, and the impact of heat on the structure of the bottom shell 100 can be reduced, thereby reducing the risk of deformation of the bottom shell 100.

[0080] In some embodiments, with reference to Figure 7 The flow guide structure 124 includes a flow guide groove 1241 on the inner surface of the recessed space 123, that is, the flow guide structure 124 can be formed by outwardly recessing the inner surface of the recessed space 123. In this way, the flow guide structure 124 is simple in structure and easy to manufacture, and can better guide the flow of air.

[0081] In some embodiments, with reference to Figure 8 The flow guide structure 124 further includes a flow guide protrusion 1242 on the outer surface of the recessed space 123, for example, the cavity wall of the recessed space 123 can be outwardly protruded as a whole to form the flow guide groove 1241 on the inner surface and the flow guide protrusion 1242 on the outer surface. By forming the flow guide protrusion 1242, the appearance of the bottom shell 100 can be improved.

[0082] In some embodiments, the area of the shell body 1 other than the coil disc placement area 121 is provided with an air inlet hole 15 and an air outlet hole 16, the recessed space 123 communicates with the air inlet hole 15 and the air outlet hole 16 respectively, and the heat dissipation fan 300 is used to drive the airflow to flow from the air inlet hole 15 to the air outlet hole 16 via the recessed space 123. For example, the air inlet hole 15 can be arranged on the bottom wall 12 of the shell body 1 and located at the circumferential side of the coil disc placement area 121, and the air outlet hole 16 is arranged on the side wall 13 of the shell body 1; or the air outlet hole 16 can be arranged on the bottom wall 12 of the shell body 1 and located at the circumferential side of the coil disc placement area 121, and the air inlet hole 15 is arranged on the side wall 13 of the shell body 1. The arrangement position of the heat dissipation fan 300 in the accommodating cavity 11 is not specifically limited. In this way, a complete heat dissipation flow channel is formed inside the bottom shell 100, so as to dissipate heat for the coil disc 200 and reduce the structural influence of heat on the bottom shell 100.

[0083] In some embodiments, referring to Figure 7 , a surrounding rib 18 is arranged around the coil disc placement area 121, the surrounding rib 18 extends along the circumference of the coil disc placement area 121 to form an arc-shaped segment, by arranging the surrounding rib 18, it can be ensured that the airflow discharged from the heat dissipation fan 300 must pass through the coil disc placement area 121 before diffusing to the surrounding, so as to ensure the heat dissipation effect on the coil disc 200 and the coil disc placement area 121.

[0084] In some embodiments, the bottom shell 100 can further include a heat-resistant layer, the heat-resistant layer is arranged at the bottom end of the support segment 122, the heat-resistant layer is made of a material which is flame-retardant and not easy to deform, in this way, it can prevent the bottom end of the support segment 122 from being melted when being in contact with the high-temperature tabletop, so as to ensure the structural stability of the support segment 122 itself.

[0085] Optionally, the heat-resistant layer and the support segment 122 can be an integral structure, so as to ensure the connection stability of the heat-resistant layer and the support segment 122.

[0086] Alternatively, the heat-resistant layer and the support segment 122 can be a split structure and are connected through any connection mode such as bolt connection, clamping connection, plug-in connection, adhesive connection and the like. In this way, it can be convenient to maintain and replace the heat-resistant layer.

[0087] The embodiments or implementations in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0088] It should be noted that the use of "one embodiment," "an embodiment," "certain embodiments," "some embodiments," "exemplary embodiment," "one specific embodiment," "certain specific embodiments," and the like, herein, does not necessarily refer to the same embodiment, although they can. Furthermore, the description herein of one specific embodiment, or a certain number of specific embodiments, does not necessarily indicate that other specific embodiments are not included within the scope of the application.

[0089] In general, terminology can be understood at least in part from usage in context. For example, the term "one or more" as used herein, depending at least in part upon context, can be used to describe any feature, structure, or characteristic in a singular sense or can be used to describe combinations of features, structures or characteristics in a plural sense. Similarly, terms, such as "a" and "the", as used herein, can be understood to convey a singular usage or to convey a plural usage, depending at least in part upon context.

[0090] It will be readily understood that the terms "on", "above", and "on top of", when used in the present disclosure, shall not be construed as each being limited to "directly on", but rather, can include "on", "above", or "on top of", with intervening features or layers, unless otherwise specifically stated. Furthermore, the terms "above" and "on top of", when used in the present disclosure, shall not be construed as each being limited to "above" or "on top of", with no intervening features or layers, but rather, can include "above" or "on top of", with no intervening features or layers (i.e., directly on), unless otherwise specifically stated.

[0091] Finally, it should be noted that the above-described embodiments are merely intended to illustrate the technical solutions of the present application, but not to limit the same; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications to the technical solutions recorded in the above embodiments, or make equivalent replacements to some or all of the technical features thereof; and such modifications or replacements do not cause the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electromagnetic oven, characterized by, The electromagnetic induction cooker comprises: a coil panel; a bottom shell, which comprises a shell body defining a receiving cavity for mounting the coil panel, a bottom wall of the shell body comprising a coil panel placement area corresponding to the coil panel, the coil panel placement area being formed with a plurality of flow guide structures, the flow guide structures being spaced apart along the circumferential direction of the coil panel placement area and extending helically.

2. The electromagnetic stove according to claim 1, characterized in that, In the height direction of the bottom shell, the coil panel placement area protrudes from the inside of the receiving cavity towards the outside of the receiving cavity to form a recessed space, the flow guide structures being formed on the side wall of the recessed space.

3. The electromagnetic stove according to claim 2, characterized in that, The flow guide structures comprise flow guide grooves on the inner surface of the recessed space.

4. The electromagnetic stove according to claim 3, characterized in that, The flow guide structures further comprise flow guide ridges on the outer surface of the recessed space.

5. The electromagnetic stove according to any one of claims 2-4, characterized in that, The electromagnetic induction cooker further comprises a heat dissipation fan, the area of the shell body other than the coil panel placement area being provided with an air inlet and an air outlet, the recessed space being in communication with the air inlet and the air outlet respectively, the heat dissipation fan being configured to drive air flow from the air inlet to the air outlet via the recessed space.

6. The electromagnetic stove according to any one of claims 2-4, characterized in that, The bottom shell further comprises a supporting leg connected to the bottom wall of the shell body, the supporting leg being configured to support the shell body away from a placement table top.

7. The electromagnetic stove according to claim 6, characterized in that, The coil panel placement area further comprises a circular arc transition section and a supporting section, one end of the circular arc transition section being connected to the part of the bottom wall other than the coil panel placement area, the other end of the circular arc transition section being connected to the supporting section, the circular arc transition section and the supporting section enclosing the recessed space.

8. The electromagnetic stove according to claim 7, characterized in that, In the height direction of the bottom shell, the end of the supporting section away from the shell body is higher than the end of the supporting leg away from the shell body, so that the supporting section is spaced apart from the placement table top.

9. The electromagnetic stove according to claim 8, characterized in that, The height difference between the end of the supporting section away from the shell body and the end of the supporting leg away from the shell body is 0.5-5 mm.

10. The electromagnetic stove according to any one of claims 1-4, characterized in that, The inner surface of the coil panel placement area is provided with a plurality of reinforcing ribs.

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